History of Hydraulic Jacks

[ad_1]

Hydraulic jacks are widely used all across the globe. They have a lot of relevance in the present era, as they have made an incredible contribution in making our life much more comfortable than it was before. These jacks have outweighed conventional screw jacks that were in use at some point of time. They consist of two cylinders joined together. It works on the principle of Pascal’s law which suggests that when there is an increase in pressure at any point in a container of fluid, there is an equal increase in pressure at every other point in the container.

History

The origin of hydraulic jacks can be dated several years ago when Richard Dudgeon, the owner and inventor of hydraulic jacks, started a machine shop. In the year 1851, he was granted a patent for his hydraulic jack. In the year 1855, he literally amazed onlookers in New York when he drove from his abode to his place of work in a steam carriage. It produced a very weird noise that disturbed the horses and so its usage was limited to a single street. Richard made a claim that his invention had the power to carry near about 10 people on a single barrel of anthracite coal at a speed of 14 m.p.h. Dudgeon deserves a special credit for his innumerable inventions including the roller boiler tube expanders, filter press jacks, pulling jacks, heavy plate hydraulic hole punches and various kinds of lifting jacks.

Common Types

Floor Jacks: These jacks are primarily used to lift heavy equipments from the surface of the floor. It is more often used to change the tyres of vehicles. Floor jack is known by different names such as garage jack and car jack. Nowadays, you can find more powerful jacks in the market that use hydraulic power for maximum lift.

Hydraulic Bottle Jacks: Hydraulic bottle are versatile since they can be placed in tight spots and provides good leverage. They have a longer handle as compared to rest of the hydraulic jacks and push up against a lever that gives a lift to the main lift arm. With their use, it is possible to give a greater lift per stroke. They are extensively used in the construction of buildings and repairing the foundation of houses. It has also been found to be very useful in search and rescue operations.

Long Ram Jacks: In simple terms, it is a hydraulic jack with a long size ram. Its lever handle is quite easy to use. It is primarily used for performing various types of repairing work.

Shop Press jacks: They are of great use in press jobs where there arises a need to generate tremendous pressure with minimum effort.

Another popular form of jack that enjoys high demand in the market is the Porta Power Jack.

[ad_2]

Source by Jeff Muchnik

The KWP2000 Protocol in Automotive Diagnostic Applications

[ad_1]

The KWP2000 protocol has become a de facto standard in automotive diagnostic applications. It is standardized as ISO 14230-3. KWP2000 describes the implementation of various diagnostic services you can accethrough the protocol. You can run KWP2000 on several transport layers such as K-line (serial) or CAN.

Transport Protocol

As KWP2000 uses messages of variable byte lengths, a transport protocol is necessary on layers with only a well defined (short) message length, such as CAN. The transport protocol splits a long KWP2000 message into pieces that can be transferred over the network and reassembles those pieces to recover the original message.

KWP2000 runs on CAN on various transport protocols such as ISO TP (ISO 15765-2), TP 1.6, TP 2. 0 (Volkswagen), and SAE J1939-21. For KWP2000, the Automotive Diagnostic Command Set supports only the ISO TP (standardized in ISO 15765-2) and manufacturer-specific VW TP 2.0 transport protocols.

Diagnostic Services

The diagnostic services available in KWP2000 are grouped in functional units and identified by a one-byte code (ServiceId). The standard does not define all codes; for some codes, the standard refers to other SAE or ISO standards, and some are reserved for manufacturer-specific extensions. The Automotive Diagnostic Command Set supports the following services:

• Diagnostic Management

• Data Transmission

• Stored Data Transmission (Diagnostic Trouble Codes)

• Input/Output Control

• Remote Activation of Routine

Upload/Download and Extended services are not part of the Automotive Diagnostic Command Set.

Diagnostic Service Format

Diagnostic services have a common message format. Each service defines a Request Message, Positive Response Message, and Negative Response Message. The Request Message has the ServiceId as first byte, plus additional service-defined parameters. The Positive Response Message has an echo of the ServiceId with bit 6 set as first byte, plus the service-defined response parameters.

The Negative Response Message is usually a three-byte message: it has the Negative Response ServiceId as first byte, an echo of the original ServiceId as second byte, and a ResponseCode as third byte. The only exception to this format is the negative response to an EscapeCode service; here, the third byte is an echo of the user-defined service code, and the fourth byte is the ResponseCode. The KWP2000 standard partly defines the ResponseCodes, but there is room left for manufacturer-specific extensions. For some of the ResponseCodes, KWP2000 defines an error handling procedure. Because both positive and negative responses have an echo of the requested service, you can always assign the responses to their corresponding request.

Connect/Disconnect

KWP2000 expects a diagnostic session to be started with StartDiagnosticSession and terminated with StopDiagnosticSession. However, StartDiagnosticSession has a DiagnosticMode parameter that determines the diagnostic session type. Depending on this type, the ECU may or may not support other diagnostic services, or operate in a restricted mode where not all ECU functions are available. The DiagnosticMode parameter values are manufacturer specific and not defined in the standard. For a diagnostic session to remain active, it must execute the TesterPresent service periodically if no other service is executed. If the TesterPresent service is missing for a certain period of time, the diagnostic session is terminated, and the ECU returns to normal operation mode.

GetSeed/Unlock

A GetSeed/Unlock mechanism may protect some diagnostic services. However, the applicable services are left to the manufacturer and not defined by the standard.You can execute the GetSeed/Unlock mechanism through the SecurityAccess service. This defines several levels of security, but the manufacturer assigns these levels to certain services.

Read/Write Memory

Use the Read/WriteMemoryByAddress services to upload/download data to certain memory addresses on an ECU. The address is a three-byte quantity in KWP2000 and a five-byte quantity (four-byte address and one-byte extension) in the calibration protocols. The Upload/Download functional unit services are highly manufacturer specific and not well defined in the standard, so they are not a good way to provide a general upload/download mechanism.

Measurements

Use the ReadDataByLocal/CommonIdentifier services to access ECU data in a way similar to a DAQ list. A Local/CommonIdentifier describes a list of ECU quantities that are then transferred from the ECU to the tester. The transfer can be either single value or periodic, with a slow, medium, or fast transfer rate. The transfer rates are manufacturer specific; you can use the SetDataRates service to set them, but this setting is manufacturer specific. The Automotive Diagnostic Command Set supports single-point measurements.

Diagnostic Trouble Codes

A major diagnostic feature is the readout of Diagnostic Trouble Codes (DTCs). KWP2000 defines several services that access DTCs based on their group or status.

Input/Output Control

KWP2000 defines services to modify internal or external ECU signals. One example is redirecting ECU sensor inputs to stimulated signals. The control parameters of these commands are manufacturer specific and not defined in the standard.

Remote Activation of a Routine

These services are similar to the ActionService and DiagService functions of CCP. You can invoke an ECU internal routine identified by a Local/CommonIdentifier or a memory address. Contrary to the CCP case, execution of this routine can be asynchronous; that is, there are separate Start, Stop, and RequestResult services. The control parameters of these commands are manufacturer specific and not defined in the standard.

External References

For more information about the KWP2000 Standard, refer to the ISO 14230-3 standard.

[ad_2]

Source by Amos Huang

Mobile Phone GPS Tracking – Anonymous Way Of Spying

[ad_1]

Cellular phones have become a basic commodity and as such almost everyone have a single unit at hand. Just by having a cellular phone, the compatible software, and a vehicle that has a built-in GPS (Global Positioning System) device, one may have anonymous cellular phone GPS tracking. By installing such a device on a certain sports utility car (SUV) or any type of vehicle, and upon getting the software to work on the cell phone, a person can secretly track the whereabouts of that certain SUV. The nature of Anonymous cellular phone GPS tracking is a concealed operation, however it is helpful for persons who want to trace the status of their vehicles. This will lessen crime offenders form hijacking cars. Parking lots are safer with this device on cars. Crimes will easily be solved such as kidnappings and car napping are concerned.

There are infinite chances for better law enforcement with regards to Anonymous mobile phone GPS tracking. Normally, it is easy to identify the vehicle used by an offender. There are data base that law enforcement use to make them out. However, to know the location and to try to seize that particular vehicle is much harder than in concept. But by attaching a small magnetic box to the criminal?s vehicle that would allow the GPS signal to be sent to the mobile phone, the police is able to track the vehicle by means of anonymous mobile phone GPS tracking. With the aid of technology through the GPS system and the satellite network, pinning down a criminal becomes effortless. This implies a lower crime rate though out the world. All the hideouts of suspected drug lords or people under investigation can be tracked easily. The good thing about it is that this can go both ways. The suspect can be found to be innocent after all. Or if not it will incriminate the offender further as charged.

It is typical for parents to want to track the whereabouts of their children without having them knowing about it. This may not be in good taste, but somehow necessary in some cases. This is where anonymous cell phone GPS tracking becomes most valuable and applicable as a conspirator. Merely placing a GPS RECEIVE somewhere secretly in the automobile and install the applicable software on your cell phone. This will continuously send you important updates upon the location of the automobile via anonymous

cell phone GPS tracking.

[ad_2]

Source by Abhishek Agarwal

After a Car Accident or Whiplash Injury: Symptoms of Mild Traumatic Brain Injury (MTBI)

[ad_1]

We have all had this happen, or know someone this has happened to. Suddenly, someone crashes into the back end of your car and you feel your head extend back over the headrest and then rebound forwards, almost hitting the steering wheel with your forehead. When the police arrive and start asking questions about what had happened, you try to piece together what happened but you’re not quite sure of the sequence of events. Your memory just isn’t that clear. Within the first few days, in addition to significant neck and headache pain, you notice your memory seems fuzzy, and you easily lose your train of thought.

Although whiplash injuries are quite common, research is only beginning to describe the diverse symptoms that can develop when the neck has been traumatized. Because whiplash symptoms are often subtle and non-specific, it’s quite normal for patients not to complain about them. In fact, we almost always have to describe the symptoms and ask if any of these symptoms sound familiar to the patient.

As pointed out above, patients with Mild Traumatic Brain Injury (MTBI) don’t mention any of the previously described symptoms and in fact, may be embarrassed to discuss these symptoms with their Las Vegas chiropractor when they first present after a car crash. This is because the symptoms are vague and hard to describe and, many feel the symptoms are caused by simply being tired or perhaps upset about the accident. When directly asked if any of these symptoms exist, the patient is often surprised there is an actual reason for feeling this way.

The cause of MTBI is due to the brain actually bouncing or rebounding off the inner walls of the bony skull during the whiplash process, when the head is forced back and forth after the impact. During that process, the brain which is suspended inside our skull, is forced forwards and literally ricochets off the skull and damages some of the nerve cells most commonly associated with either the brain stem (the part connected to the spinal cord), the frontal lobe (the part behind the forehead) and/or the temporal lobe (the part of the brain located on the side of the head). Depending on the direction and degree of force generated by the collision (front end, side impact or rear end collision), the area of the brain that may be damaged varies because it could be the area closest to initial impact or, the area on the opposite side, due to the rebound effect. Depending on which part of the brain is injured, the physical findings may include problems with walking, balance, coordination, strength, as well as difficulties with communicating, processing information, memory, and altered psychological functions.

The good news is that most of these whiplash injuries will recover within 3-12 months but unfortunately, not all do and in these cases, the term, post-concussive syndrome is sometimes used.

We realize you have a choice in medical providers for spine injuries. If you, a friend or family member requires care for whiplash, we sincerely appreciate the trust and confidence shown by choosing our expertise and look forward in serving you and your family presently and,anytime in the future.

[ad_2]

Source by Michael Reiss

Hunting Non-Exportable African Lions – The New Norm?

[ad_1]

I think that most serious hunters have entertained the idea of hunting the African lion. The lion is a challenging and dangerous animal to hunt and is possibly the most iconic game animal on Earth. Hunting him will test the hunter’s skills and mental fortitude. Due to recent changes in import regulations which have an effect on hunt prices, a lion hunt is more affordable than ever.

Due to current US law, the vast majority of lion hunting opportunities for Americans are hunts where it is impossible to import the skin and skull back to the United States. That does not mean that hunters should not hunt lions. Hunt prices are at a place where they have become as affordable as a plains game hunt for someone wanting to hunt a non-exportable lion. And the experience of the hunt is the same.

There is an internal debate hunters inevitably go through when considering to hunt an animal they cannot legally import back into the United States. Mounted animals and skulls act as a reminder of the hunt and bring honor to the creature so worthy of pursuit. However, laws are laws and some animals cannot be imported despite the fact that there are sustainable enough populations that necessitate hunting.

Ultimately, the hunt is about the experience. On a non-exportable lion hunt, the hunter can still memorialize the hunt through pictures. Nothing is different about the actual hunt. My encouragement to hunters is simple: go and hunt lion. Live the dream you’ve been dreaming. The experience of a lion hunt is like no other, and the opportunity to even hunt African lions is never guaranteed in the future. Although it seems paradoxical, hunting lions is something that will help sustain the populations for generations to come.

When hunters travel to pursue lions, they are actively contributing to their conservation. When hunters spend money on a lion hunt, whether it is a free range hunt or not, it gives lions value. Without value, lion populations reduce or disappear. Africa’s human population is exploding and there is a finite amount of space on the continent. Lions have huge home ranges and require a lot of space. There is a fragile coexistence at best in places where lions live near humans. Lions are dangerous to humans and destructive to wildlife and domestic stock. It is difficult for Westerners to understand the constant danger one lives in when living in the presence of lions. Having travelled to over 20 African countries and spent a lot of time with locals, it is not uncommon to meet people who have been maimed by lions or have had family members or friends maimed or killed by lions.

However, in Africa, if it pays it stays. Hunting dollars from lion hunts make lions worth something to those who live in close proximity to them. In places where hunting is not allowed and there is no market for photographic safaris either, lion populations are low or nonexistent.

It is unfortunate that our own USFWS has become so political in its decision making rather than using scientific data to drive their decisions. Recently, however, USFWS has finally recognized what African countries and hunters have always known. In an October 20, 2016 announcement, Director of US Fish and Wildlife Service Dan Ashe stated that, “sport hunting of wild and wild-managed lions does contribute to the long-term conservation of the species in South Africa.” He also stated that, “lions are not in trouble because of responsible sport hunting.” However, USFWS has still made laws that make importation of lions very difficult, and in many cases, impossible.

Law Changes on Importation of Sport Hunted African Lions

On December 23, 2015, USFWS announced it would restrict trophy hunted African lion imports through a permit system administered under the US Endangered Species Act. The law went into effect on January 22, 2016. Before this date, lions would be imported without an import permit as long as they had the proper CITES export permit from the host country.

The USWFS ruling did a couple of things. First, they split African lions into two scientific subspecies. They categorized Panthera leo melanochaita as East and South Africa lions and designated them as threatened. They designated Central and West African lions as the same subspecies of Asiatic lions, Panthera leo leo, and put them on the endangered list. This part of the ruling pretty much ends importation of sport hunted lions from Central and Western African countries. However, it did not completely shut down trophy hunted imports from East and South Africa, and because their designation is considered “threatened,” they applied rule 4(d) from the Endangered Species Act. This states that import permits for lions will only be given when it can be proven that “the importation of sport hunted P.l. melanochaita trophies will ensure hunting contributes to the survival of the species in the wild.” While USFWS gave examples of some of the things they would look for in permit applications, it was and currently remains ambiguous as to how they will decide which permit applications pass muster.

On October 2016, USFWS ruled that it would not allow imports of lions from South Africa that were not free range (captive reared.) They left the door open to the rest of the East and South African subspecies to possibly be imported, but ultimately they will decide whether or not to grant importation permits on an individual basis.

Rifles for Hunting Non-Exportable Lions

While it is possible to kill a lion with a lesser rifle, hunting laws across Africa generally prohibit using a caliber smaller than a.375 H & H. This is a good thing. It is better to have more than enough power for dangerous game. A.375 is sufficient for the job at hand and anything larger is a bonus. Shots are usually between 30-60 yards, so you can use your judgment on whether or not to use a scope. Ideally, a scope of 1×4 power is best because it allows you to find the lion in the scope quickly in the event of a charge. Open sights are adequate (and quite possibly preferred) but only if you are proficient with them. Use quality expanding bullets (softs) and not solids.

Some outfits allow you to rent a rifle if you do not own a dangerous game caliber rifle. Because shots are usually close, this is not as poor of an option as it seems. It is nice to use a rifle you are familiar with, but it comes down to affordability in the end, and some hunters hate traveling with a firearm.

Bow Hunting Non-Exportable Lions

Lion hunting is conducive to bow hunting because they are usually shot at close range. With the proper equipment, the killing power of a well-placed arrow is irrefutable. However, in the event of a charge, you may as well throw sticks at the lion because (1) you won’t be able to draw in time and (2) even if you could, an arrow does not have any reliable stopping power.

If you are a die-hard bow hunter, it is definitely doable. Any set up that you would use for elk will be sufficient. That being said, use of a 2 blade single bevel broadhead is a good idea to insure penetration through the shoulder bone if the shot is not perfect. Again, it’s better to have more penetration power. Broadside or quartering away shots are what you want, but this is not always easy because if the lion knows your there he will likely be facing you. If you take a head on shot, beware of the mane because it is easy to shoot too low. You do not want to wound a lion. The danger factor is multiplied ten-fold if you do not put a good killing shot on him and he makes his way to the thick stuff.

Equipment for Hunting Lions

On a lion hunt you will be doing a lot of walking and it will likely be hot after the early morning. Make sure your boots are broken in and your clothes fit well enough that they do not get in the way when raising your rifle.

Binoculars are important. Whatever you use for plains game will work fine, but ideally 8 power binoculars are a better choice than 10 power. You will be glassing small clumps of brush for a bedded lion and not trying to estimate the horns of a duiker 300 yards away, so the wider field of view is more important than magnification.

Hunting Methods for Non-Exportable Lions

Lions are generally tracked or baited. If you choose to hunt non-exportable lions, South Africa is the most likely destination due to abundance of lions and the affordable price of the hunts. Most lion hunts in South Africa take place in the northern part of the country in the Kalahari Desert. It is beautiful country and the terrain is conducive to tracking, which is what makes this type of hunt so exciting. The ground is sand covered and holds a lion track very well.

If tracking is the hunting method you will cover miles and miles in a bakkie (truck) through the sand trying to find a track fresh enough to follow. You may also hike to find a track, depending on what your PH thinks is best. When a track is found, the PH and tracker will determine if it is a male or female track. (In some places, female lions can be hunted as well as males.) Next, depending on the layout of the roads in the area you are hunting, your PH may try to box the lion in. This means he will attempt to circle around in the direction the lion is headed and see if he crossed a two track road. Then he may repeat this until he has an idea of where the lion is. This gives you a better chance of catching up to the lion before it gets dark.

Depending on the moisture and density of the sand, you may or may not even see an actual pad mark and toes in the lion tracks. The tracker is mainly looking for the stride of the cat. Felines have a distinctive stride that sets them apart from the ungulates and other predators in the area. If there is a little moisture in the sand, you may see a pad, but rest assured that your tracker knows exactly what he is looking at regardless. Not only will the tracker use the size of the cat’s stride to determine the sex, he will also be looking for clues to help him age the track. This depends on the condition of the sand as well as the wind and sun. It also includes a plethora of other factors trackers use that I am simply not qualified to write about because I am not an African tracker. They are masters of their craft who have learned from past generations and honed their skills through a lifetime. Part of the magic of the hunt is watching the tracker do his work. While tracking in the Kalahari is not as challenging as the rocky and hard ground of the Zambezi Valley, it is still incredible to watch. You will understand the challenge better when you see your tracker spot a lion track from the back of a moving truck amongst an uncountable number of other divots in the sand left by the other game in the area.

When you begin to follow the track, your tracker will be in the lead followed by your PH and then yourself. Although it is tempting to want to have your head down looking at the tracks, it’s important to be alert and looking ahead for the cat. This is your job. The excitement of tracking lies in the fact that you never know where the lion is. He could be miles ahead… or he could be hunkered behind the next bush watching and waiting.

Many lions have no fear of humans and view them as either food or a nuisance rather than a threat. This makes the hunt very different than hunting most other game. While your lion may scamper off as soon as he sees your hunting party approaching, he may simply stand his ground. If he runs off, you keep tracking until the next confrontation. With each confrontation, the lion has less and less patience for your intrusion. If he stands his ground, the confrontation will be unnerving. They are incredible big, especially when viewed face to face on the ground. I can assure you that the confrontation will be like none other you’ve experienced hunting and the memory will last a lifetime.

It is not uncommon for a lion to charge the party, even unwounded. You must be ready in that situation and always be aware of where people are in your hunting party because your rifle bullet is just as deadly as the lion. If possible, the proper way to deal with a charge is to take a knee. This puts you on the same level as the oncoming lion and makes it less likely you will shoot behind him. I have not had such an experience, but have gotten this advice from several dangerous game PHs.

African Lion Hunting Summary

Lion hunting is dangerous. There is no way around this. As Robert Ruark wrote: “You get the lion, or the lion gets you.” A male may weigh 450 pounds. His favorite food is Cape buffalo which can weigh 1500 pounds and he has no problem killing one. While maulings are not common because Professional Hunters are usually very good, the propensity for danger is there and it is very real. It is not called dangerous game for nothing. It is the potential for danger that makes the hunt something very unique and special for those who have not experienced it. A Zimbabwean PH once told me that you hunt dangerous game with different pieces of yourself. He told me you hunt elephants with your legs, leopards with your brain, and buffalo with your guts. Lions, he said, you hunt with your heart.

True conservationists hope that the opportunity to hunt African lions does not end, regardless of importation law status. However, it is possible that in the not so distant future many hunters will wish they would have booked a lion hunt, exportable or not, because the opportunity is not guaranteed.

[ad_2]

Source by John Martins

Beware of Buying a Used Freelander Viscous Coupling Unit (VCU)

[ad_1]

Some of the most expensive parts to replace on a Land Rover Freelander are in the drive train – the IRD unit (transfer box), rear differential and gearbox. So why would you risk damaging any, or all of these parts? If your viscous coupling unit (VCU) has past its useable life then instead of paying out for a replacement viscous coupling unit (VCU) you could be spending thousands on ALSO replacing the IRD unit (transfer box), the rear differential and possibly even the gearbox.

The viscous coupling unit of a Land Rover Freelander is a sealed unit positioned in the centre of the prop shaft. Inside the unit is a viscous fluid. Over time this fluid gets thick – much as your engine oil would – and eventually causes the prop shaft to rotate at a slower speed than is required. You can tell when you have reached this point as your Freelander will feel as though it is holding back on you, especially when turning on full lock – but don’t wait this long, by then you may have already done expensive damage!

The problem with the viscous coupling unit (VCU) is that it is a sealed unit, so you cannot check the condition of the viscous fluid inside it. There are a number of tests that people say will test if your fluid has had it, but none of these are really reliable.

The viscous coupling unit (VCU) has a life span of about 70,000 miles – after this time you are dicing with, not death, but very large bills!

So why should you not buy a used viscous coupling unit (VCU)? Well, simply because you have no idea as to the condition of the viscous fluid inside it, because generally you have no idea of the mileage it has done. So how will you know when to change it? How will you protect yourself from those big bills? You can’t!

If you have been unfortunate enough to suffer from a damaged IRD unit (transfer box) or rear differential was your mileage over 70,000 miles? Had your viscous coupling unit (VCU) been replaced previously? If your mileage was over 70,000 miles and you never replaced your viscous coupling unit (VCU) then this will generally have been the cause of your empty wallet! And if you still don’t replace your viscous coupling unit (VCU) and fit a new IRD unit (transfer box) or rear differential, then it is almost certain the same thing will soon happen again!

The key is to always buy a new or reconditioned viscous coupling unit (VCU) which has had the viscous fluid replaced. This way you know you have another 70,000 miles of carefree motoring without having to worry about damaging your expensive drive train.

So, whatever you do, DO NOT buy a used viscous coupling unit (VCU) for your Land Rover Freelander just to save a few pounds – it may turn out to be the most expensive saving you’ve ever made!

[ad_2]

Source by Sue L Maddock

My Air Bag Did Not Deploy – What Went Wrong?

[ad_1]

One of the most common phone calls we receive is from consumers wondering why their air bag did not deploy during a crash. This article describes how air bag deployment thresholds are established, the kinds of crashes during which air bags should deploy, and crashes where they may not deploy. It also provides information on several different defects that may be responsible for the air bag failing to deploy when it should deploy.

Air Bag Deployment Thresholds

Conventional air bags are generally designed to deploy in certain frontal crashes above the thresholds selected by the manufacturer. Unfortunately, the consumer often cannot determine the thresholds for their car, as they vary widely between manufacturers, and even vary among different models from the same manufacturer. However, there are some general guidelines that are helpful for consumers.

Although there were some variations, most frontal air bags from the 1990s were designed to deploy in crashes above a threshold level of 14 mph into a solid concrete barrier. At the same time, most air bag systems were also designed to never deploy in crashes below 8 mph into a solid concrete barrier. Between these two speeds, the air bags may or may not deploy, depending on the specifics of the accident and vehicle.

However, please note that these speeds are based on crash tests into a solid concrete barrier. Therefore, if your car has struck something that moved or deformed (like another car, utility pole or guardrail), these thresholds could be considerably higher. For example, a 14 mph barrier test may be equivalent to a frontal crash at 28 mph into a parked car. Also, these thresholds for air bag deployment have generally increased since the 1990s, with some now reaching 18 miles per hour, recognizing that air bags can cause more injuries than they prevent in minor accidents.

If your crash severity exceeds the car company’s thresholds, and yet your air bags did not deploy, you may well have a defect in your vehicle’s air bag system.

Crashes Where the Air Bag Should Deploy

Your air bags should deploy in every crash where they will help prevent your injuries. This means that your air bag should deploy in those crashes where you would otherwise suffer injuries of the type that the air bag is designed to prevent: head, neck, and chest injuries. For example, your frontal air bag should deploy in an accident where your head would otherwise be injured from hitting your steering wheel.

Although frontal air bags are generally not designed to deploy in side impacts or rollovers, in some cases they should deploy in those kinds of crashes. That is because some side impacts or rollovers also cause front-to-back deceleration that causes you to move forward inside your vehicle. One example would be if you were driving at highway speed and were hit on the side of your car: in addition to crushing in the side of the car, your car would also slow down its forward motion rapidly, which could be enough to deploy your frontal air bags. Similarly, frontal air bags should generally not deploy in rear impacts; however, if you are hit from behind and pushed into a car in front of you, that second impact to your car’s front end may justify deployment of your air bags.

For side impact air bags, they should generally deploy on the side of the car experiencing the side impact. Similarly, rollover “curtain” air bags should deploy when the vehicle experiences a rollover, to help prevent head and neck injuries and to reduce the risk of being ejected through an open or shattered window.

Examples of crashes where air bag deployment would be expected include moderate to severe crashes involving your front bumper or the front corners of your vehicle, frontal impacts to a utility or telephone pole, and under-ride impacts where the front of your car goes under the side or back of a truck.

Crashes Where the Air Bag Should Not Deploy

Your air bags should not deploy in those accidents where they will not prevent your injuries. After all, air bags can deploy at speeds of more than 200 mph, and you should not be exposed to those kinds of forces if it won’t help you. Thus, your frontal air bags should not deploy in side impacts, rear impacts and rollovers where there is no significant deceleration from front to back.

Other examples of crashes where your air bags should not generally deploy include:

o Minor frontal crashes

o Most impacts to the undercarriage of the vehicle, such as when crossing a railroad

o Impacts with animals such as deer or dogs

o Impacts with street curbs or parking blocks

o Driving on rough roads, including those with large potholes, gravel or bumps

Of course, your air bags should never deploy when your vehicle is not in an accident. Although this seems obvious, there are actually many cases where this has occurred, often due to poor design of the air bag system software, or due to electrical issues with the air bag system.

Why Your Air Bag Did Not Deploy

There are several reasons why your air bag may not have deployed during a crash. The first reason is that perhaps your crash is not the type of accident where air bag deployment would be helpful. For frontal air bags, this includes many, but not all, side impacts, rear impacts and rollovers. This category also includes minor accidents in which the driver and front passenger (if there was one) did not suffer any significant injuries requiring medical treatment.

The second reason is that there could be a defect that prevented the crash sensors from detecting the crash properly. Our investigation and analysis of air bag systems in hundreds and hundreds of crashes has revealed numerous causes that fall within this category. In some cases, the air bag deployment threshold is simply not set appropriately, often due to inadequate testing. In other cases, a flaw in the software of the air bag control module has caused it to ignore the data from one of the crash sensors. In still other cases, there are simply too few sensors to properly detect real-world crashes; this often results from overly zealous cost-reduction efforts by car companies that are trying to improve their finances. In a few cases, quality control efforts have failed to prevent defective sensors or air bag control modules from reaching the public.

The third reason is that there could be a defect that prevented the deployment signal from reaching the air bag modules and deploying them. Here, the problem usually lies with the electrical components and wiring between the crash sensors, control module and the air bag modules. The most frequent defect in this category that we see is when the driver air bag fails to deploy, but the passenger air bag does deploy. In many cases, this is due to a defective clockspring located in the steering column. Millions of defective clocksprings have been recalled, generally due to poor quality control at either the supplier’s production plant or the car company’s assembly plant.

Another defect in this category is when the wiring is routed through vulnerable areas, resulting in wires that get cut early during a crash sequence. Although the sensor then detects the crash, the cut wires prevent the signal from reaching the air bag modules.

The fourth reason is that there could be a defect that prevented the actual air bag modules from deploying correctly. In a few cases, the crash sensors and air bag control modules have commanded deployment of the air bags, but the air bags failed to respond. This is almost always due to defects within the air bag modules themselves, usually due to poor quality control.

[ad_2]

Source by Taras Rudnitsky

Various Types of Security Systems, Products and Gadgets

[ad_1]

It is human tendency to ignore unpleasant circumstances until they happen! Security takes low priority among other things, when it should be treated as the most important and the foremost thing. No matter how secure your country, state or neighborhood maybe, security should precede all other facilities. Whether you are looking at a residential, commercial or office area, the prime feature to look out for are its security systems. After all, you invest your hard-earned money to make your place as per your choice. So you should invest some more to prevent it from unprecedented acts.

The early ages of mankind saw traditional methods of patrolling and bow-arrow. With the advent of new technology security has taken a new, more sophisticated form. You get various security gadgets to prevent unauthorized access to personal property. Some of the high-end security products are:-

* Burglar Alarm System – Burglar alarm systems are designed to detect unauthorized access in a confined area. These consist of an array of sensors, a control panel and alerting system, and interconnections. The sensors are capable of detecting unauthorized access by various methods like monitoring door and window contacts, by passive infrared motion detectors, ultrasound, vibration, electric or magnetic fields, or microwaves. These alarm systems can be used for various purposes like fire protection, intrusion protection and many more.

* Vehicle Security Systems – Vehicle security systems are designed specifically for the security of your vehicle. These typically include GPS trackers, rear view cameras, car alarms that raise a high volume sound if any unauthorized access is attempted.

* CCTV Camera – Closed circuit television cameras are used to transmit a signal to a specific place on a limited set of monitors. These are typically used for surveillance activities in public places, industries, offices and highly secured zones.

* Digital Safe Lockers – These are the upgraded forms of traditional lock and key lockers. These gadgets are more reliable as they work on keypad number entry combination locks.

* Door Locks

* Electronic Key Tags – A famous form of Electronic key tags is RFID tags. Most of the asset tracking, logistic industry and payment systems use RFID to make their operations smoother.

* Electronic Security Systems

* Fire Alarm System – Fire alarm systems are designed to detect fire caused accidentally. These devices raise an alarm the moment fire breaks out. These have heat detectors, smoke detectors, flame detectors and carbon monoxide detectors.

* Glass Break Detector – A glass break detector is a sensor used in electronic burglar alarms that detects if glass is shattered or broken. These sensors are commonly used near glass doors or glass store-front windows to detect if an intruder broke the glass and entered. Glass break detectors use a microphone which monitors any exceeding noise or vibration coming from the glass. A detector circuitry detects a certain set threshold and raises an alarm.

* GPS Tracking System – A GPS tracking system uses Global Positioning System to find the precise location of living/non living entity.

* Home Security Systems – Most home security systems consist of door and window sensors, motion sensors and a central keypad controller. These systems take care of your home even while you are away from home.

* IP Camera – Internet Protocol Cameras are installed for surveillance purposes. These devices can send and receive data via a computer network. They are broadly classified into Centralized and Decentralized IP cameras.

* Metal Detectors – These are commonly used to detect the presence of hidden metal. Metal detectors work on the principle of magnetic field. It consists of an oscillator producing an alternating current that passes through a coil producing an alternating magnetic field. If a piece of electrically conductive metal is close to the coil, eddy currents will be induced in the metal, and this produces an alternating magnetic field of its own. If another coil is used to measure the magnetic field the change in the magnetic field due to the metallic object can be detected.

* Motion Sensor Detector – Motion detectors are used to monitor movements. IT raises an alarm the moment it captures a moving object.

* Security Camera

* Smoke Detector – It is used as an indicator of fire. It detects smoke in commercial, residential and industrial areas. These devices use optical detection and physical process for sensitive smoke detection.

* Surveillance Systems – These are a collection of security devices that are collectively used for surveillance purposes.

* Video Door Phone

The above is a small list of security products available in the market to give you protection against unforeseen circumstances. Find the best manufacturers, suppliers and dealers in your city. Invest wisely and stay protected!

[ad_2]

Source by Shreshth Jha

How to Install a Manual Boost Controller Without Blowing Up Your Engine

[ad_1]

Prior to installing any manual boost controller, it is important to have already added a high flowing exhaust and an aftermarket air intake/ air filter. This will ensure the car is able to breath, and will allow the turbo to spool easier.

It is imperative to have installed an aftermarket boost gauge. Most stock boost gauges are not accurate, even at stock boost levels, and lose further accuracy once stock boost is increased. Without an aftermarket boost gauge you risk damage to the engine from overboosting.

How It Works:

The wastegate actuator determines your stock boost levels. The boost controller interrupts the pressure line that runs into the wastegate actuator, allowing you to increase boost over stock levels.

Step 1:

Find your wastegate actuator which is usually attached to the turbo, unless you are using an external wastegate. The wastegate actuator will have a vacuum line port that runs to a boost source. The boost source is usually either the turbo’s compressor housing, the intercooler pipes, or the intake manifold. This vacuum line is where the manual boost controller will be installed. If there is a T fitting in the vacuum line between the boost source and the wastegate actuator, it will have a separate vacuum line that runs to the boost control solenoid. If you have the T fitting, remove the line that runs to the solenoid, but leave the solenoid plugged in.

The barb on the boost controller that connects to the wastegate actuator will have a small hole drilled into it. It is important to leave this hole open, and never switch the wastegate barb and the boost barb.

Boost controllers typically come with approximately 3 feet of vacuum line that you can cut into 2 pieces of desired lengths. The first piece will connect from the boost barb on the controller to your boost source. The second piece will connect from the wastegate barb on the controller to the wastegate vacuum port. Tip: if you have difficulty sliding the vacuum lines onto the barbs, use a little bit of oil to lube the barbs. Block off any open boost sources with vacuum caps and use cable ties to secure all vacuum line connections. We recommend using Premium Fuel with all turbo cars, especially once you have increased your stock boost.

Step 2:

Now that the boost controller is installed, it’s time to test the car. We recommend leaving the adjustment knob exactly where it was when you received and installed your MBC when you begin testing. Turning the adjustment knob clockwise increases boost, turning the adjustment knob counterclockwise decreases boost. This step is very important to keep an eye on your boost gauge to make sure you do not overboost and cause any damage to your motor.

Drive your car in an isolated area where you will be able to stop and go several times without interfering with traffic. Slowly press the gas and watch your boost gauge climb. If the boost gauge does not hit your target, increase the boost. If the boost begins to exceed your target, decrease the boost. Repeat the steps as necessary. It typically takes between 5 to 10 adjustments to get the boost exactly on your target. We recommend starting by adjusting the boost knob in 1/2 turn increments, and as you get close to your target you may need to make smaller adjustments. Never adjust more than 1/2 a turn at a time.

Each car has a maximum safe boost level, depending on upgrades to the vehicle and the characteristics of the fuel system, specifically how much fuel your pump and injectors can provide. It is important to research and know what the maximum boost level your specific car can safely run.

This guide serves as a basic starting point for manual boost controller installation. If you have an external wastegate or twin turbo vehicle, the installation technique may vary slightly.

[ad_2]

Source by Matt Adler

Ozone Generator Buying Guide

[ad_1]

If you’re a homeowner and your home has recently suffered water damage, smoke damage, mold infestation, or the dreaded “smell of death” from an expired rodent in a crawl space, then you’ve probably read that an ozone generator might just be the answer to your problems. However, with so many different types of ozone machines on the market, how is one to decipher between fact, fiction, and pure unadulterated BS? I have a few tips that will help you avoid getting ripped off and help you make a wise ozone generator buying decision.

The first thing you have to realize is that the ozone generator industry as a whole is not regulated by any government agency. More than half of the so called ozone generator manufacturers are nothing but Internet opportunists trying to cash in on a high priced, somewhat in demand product. These unscrupulous vendors make their overpriced ozone machines in their own garages, set-up a website that makes all kinds of outrageous claims as to the output capabilities of their ozone machines, then advertise their website in the Search Engines. A sure fire way to weed out a few of these vendors is to do a Google search of their business address then use the “street view” feature by dragging and dropping the “little man icon” onto the street right in front of their business address. If you see a residential home, you might want to steer clear of that vendor. Why? It’s easy to shut down your operations when you’re doing business from home. When you invest in a business location, it shows you’re in it for the long haul and it’s harder to walk away from a “brink and mortar” location than it is from a home run business. Why should you care that the vendor is in business for the long haul? Because ozone generators are prone to fail due to the very corrosive nature of ozone and the damaging effects it has on the metal components within switches, timers, relays, etc. Same goes for eBay vendors who buy a lot of ozone machines without also investing in replacement parts. When their supply runs out, they’re out of the ozone business, and you’re left with an expensive door stop when your machine fails in due time.

Once you find an ozone machine that tickles your fancy and you’re ready to invest your hard earned money, the next question one must ask themselves is “How do I know if this machine really puts out as much ozone as the vendor claims? Ozone generator manufacturers don’t have to validate the ozone machines they sell to ensure they are producing the amount of ozone being claimed. I’ve seen some vendors claim 16,000 to 20,000 milligrams per hour yet when we tested those machines in our shop with our ozone meter, they produced 3000-5000 mg/h. That’s quite a big difference between what is actually being produced and what is being claimed. How then can you make sure the ozone generator you purchase is actually producing the amount of ozone being advertised? Simple! Ask the vendor the following questions in an e-mail (future fodder for a 100% money back should you test the machine and find the information provided was incorrect)

QUESTION #1. How Many Volts is the Power Supply! An ozone generator creates ozone by creating an electrical spark that splits oxygen in the air. In order to accomplish this feat, you have to create a high voltage electrical spark. A simple rule I’ve observed in the lab and well recognized in the ozone industry is that a 3000 volt transformer can produce around 3000 mg/h of ozone per hour when attached to a high voltage ozone element or six or more MICA plates at 40% humidity or less. Each Mica plate can produce a maximum of about 400 milligrams of ozone per hour IF it is properly installed due to the weak electrical spark it is capable of generating from the wire mesh. If you own a MICA plate ozone generator, view the plate in the dark. It won’t light up very bright, very dimly as a matter of fact. The types of ozone plates that turn bright purple in the dark are called “High Voltage Ozone Elements” and they can produce around 3000-4000 mgh per plate when fed with a 3000-4000 volt power transformer. These types of plates glow purple, almost like UV lamp, in the dark. They create a very strong electrical spark that is much more efficient at producing ozone vs the old fashioned MICA plates. As a matter of fact a 4000 volt transformer and ozone element only uses about 35 watts of electricity, now that’s efficient! Therefore, Tip #1 is to ask the vendor to e-mail you in writing the exact voltage, amps, and watts used by their power transformers and how many and which type of ozone plates their machines use. If a vendor claims for instance their machine produces 16 to 20 thousand milligrams of ozone per hour but their machine only uses one 5000 volt transformer, then you’ll things just don’t add up.

QUESTION #2. What type of ozone element does the ozone machine use? Believe it or not, some vendors will try and convince you that the ozone elements in their machines are “permanent” and will last forever. Folks, there’s no such thing as a permanent ozone plate! If used in 90-100% humidity, even the expensive high voltage ozone plates will only last 20-40 hours. Ozone generators are not made to be used in 90% plus humidity! In humid areas, you must run the air conditioning or a dehumidifier in order to perform a shock treatment. Tip #2 therefore is to think twice before buying an ozone generator from a vendor who doesn’t offer replacement ozone plates or makes a machine that utilizes “MICA” plates.

Once you have those answers in writing, save the e-mail in case you need to use it to obtain a refund in the future. When you receive your ozone generator, have a local electrician friend of the family (or hire someone) to open your ozone generator and give it the once over and test the strength (in volts) of the power transformer. If you discover the stated voltage doesn’t match the advertised voltage, ask for a refund. After all, what you’re buying when you buy an ozone generator are high voltage power transformers, not a slick sales pitch! The honest vendors will clearly state their machines specifications on their websites and via e-mail if asked. They’ll also provide you with a picture of the inside of their units and disclose the amount of plates, type used, etc. You should be weary of vendors who hold this information close to the vest or refuse to go on the record with this information.

Now you know what questions to ask an ozone machine vendor before making a purchase. I want to close out this “Ozone Generator Buying Guide” by giving you a few tips on how to save money on your purchase:

Tip #1. Ask the vendor if they sell any used units or any “bare bones” ozone generators. Many ozone generator vendors will have spare parts on hand from returned or fixed units they can sell “on the down low” for a mere pittance of the retail price. Others might be able to sell you a “bare bones ozone generator” without any of the bells and whistles you can easily use to make your own ozone generator, especially if you’re the “do-it-yourself” type. You might also want to check eBay to see if anyone is selling high voltage power transformers in the 3000-12,000 volt range or high voltage ozone elements that can be easily attached to the power transformer. Some ozone vendors want $1000 or more for their ozone generators, however, the fact of the matter is that ozone machines are pretty basic electronic components and they shouldn’t cost as much as a used car, especially if you buy the main components and “Do It Yourself.”

Tip #2. Don’t buy an ozone generator with too many “bells and whistles”. Ozone as I’ve already mentioned is very corrosive over time to all metals except stainless steel. Unfortunately, all electronic switches, relays, etc needs to use regular metal in order to be conduce electricity. What we have therefore is a dilemma. The solution? Don’t buy an ozone generator with all the bells and whistles! This would include an internal timer, ozone output dial (to turn the ozone up and down), etc. Just realize that if you do buy an ozone generator with these parts that eventually the ozone is going to destroy those parts and all it takes to shut down an ozone generator is to have one of the electrical components fail. If you want a timer, buy an external timer for $5 at Lowe’s. If you want to be able to turn the ozone output up and down, buy a “repeat cycle timer” that can turn your ozone generator on for a few seconds ever x amount of minutes, and repeat that cycle indefinitely. Both of those items can be connected via an extension cord in another room to your ozone generator. Less is more when it comes to longevity in shock treatment ozone generators.

Tip #3. Don’t over do it when performing shock treatments! There is a reason the trained professionals that administer ozone shock treatments command thousands of dollars to perform shock treatments; they know what they’re doing and how to safely and effectively perform a shock treatment without leaving your home smelling like ozone for weeks after the shock treatment! Besides being an ozone generator manufacturer, I also run a restoration business that employs ozone in some of our work. For mold remediation, ozone only plays a small role in riding the house of toxic mold for instance. Sheet rock has to be taken down and replaced, super high CFM air cleaners make sure the mold, when disturbed, isn’t re-distributed throughout the structure. Wet wood has to be dried. Leaky pipes have to be fixed, etc etc. Yes, shock levels of ozone will kill the mold, but that’s just a small part of mold remediation, regardless of what some ozone vendors might advertise to help hawk their units.

The main mistake I see homeowners make when doing a shock treatment is not properly removing or covering all petroleum based products such as carpet foam, sofa cushions, etc. We use Kevlar to cover carpets and foam filled sofas, mattresses, etc. Kevlar is ozone resistant and will keep the foam from interacting with the ozone. Ozone will oxidize foam and rubber and cause a chemical-ozone smell that can linger for weeks. So tip #3 is to not over do it with an ozone shock treatment! One or two hour shock treatments in furniture filled homes is advisable. You might have to perform several such shock treatments, but it’s better to be safe than sorry when shocking a furniture filled home. Some vendors tell their clients to just turn the ozone generator on and let it run for a few days. I strongly advise against that practice.

Tip #4. When you are ready to buy, call the vendor and order over the phone. Odds are at some point in time your ozone generator is going to need service. I don’t know about you but I hate buying something on-line, having it break down, then not being able to speak with a live person for support without having to wait on hold for 30 minutes or worse yet, not being able to speak to a live person at all then not having my e-mails answered! You can nip this type of situation in the bud by first calling. If you can’t easily get through and get a well informed live person to answer the phone to place your order, then consider buying elsewhere. This bit of advice goes for making any large ticket item purchase on the Internet.

If you want to save money and make a wise investment, ask the right questions before you buy your ozone generator and also consider incorporating some of my tip suggestions as well. The more you shop around, the more time you spend doing some Internet research, and most importantly, the more time you spend e-mailing and talk directly with the vendor, the more likely you are to make a wise investment and end up with a great ozone machine that lasts you a lifetime.

[ad_2]

Source by Mickey Alcantara