In this day of Grand Prix cars on a double ... The first note is short:
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Did you know you should never, ever put the handbrake when the outside temperature exceeds 26 degrees? The pressure thus created on the brake cable may burst the 4 tires. The most bizarre is that in ALL cases reported, the 4 tires burst at the SAME time! Creating a chain reaction that causes ..
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overflowing with driving tips no mention of problems with the parking brake if it's hot. (In fact, it mentions only that the handbrake may freeze at very low temperature ...)
The University of Calgary seems to relate this story is often associated with recreational vehicles. But no matter what kind of vehicle, the question is whether the phenomenon is a) already happened and b) plausible.
To address this point, several questions arise:
- What is the pressure recommended by the manufacturer of your vehicle?
- What is the maximum pressure recommended by the manufacturer of the tires?
- What is the maximum load carried by the tire?
is assumed that the brake pressure is applied equally on all 4 tires and the vehicle mass is uniformly applied on these tires. In this case, should the pressures suggested by manufacturers have been complied with, I have serious reservations about the alleged phenomenon.
- First, even the brakes are pushing a bike on the wheel, no tires. The use of the brake (manual or not) is unrelated to the tires. The brakes do not even touch!
- would have the 4 tires have exactly the same pressure. I do not remember ever having been able inflate my tires with the same pressure (not even 1 or 2 kPa difference between the tires)
- sites Bridgestone and Michelin not mention anything about the high temperatures. In fact, they do suggest is occurring with risks of low temperatures or pressures insufisantes!
- Having been in the Sahara, where the concept of temperature "cool" means less than 40 ° C, I do not remember ever having seen the tires explode.
For all these reasons, I therefore consider this story as false.
Now the second story of the day:
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Good to know
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If you do not know, it can avoid serious problems
Did you know ... ?
I wonder how many people are aware of?
A woman is injured and his car is a total loss.
It was raining that day, but not so excessive. His car began to make "hydroplaning" and began to literally fly through the air. It fortunately does not suffer any serious injuries but was in shock after the event!
As she explained to police how things had gone, it explained what every driver should absolutely know: NEVER USE THE CRUISE CONTROL "WHEN THE PAVEMENT IS WET!
The lady judge thought prudent by putting his "cruise control" because it allowed him to maintain a constant speed in the rain.
But the policeman explained that when the "cruise control" is activated when the vehicle due to hydroplaning, tires, losing contact with the ground, accelerate rapidly as during takeoff of an airplane. She replied that that was what happened when the accident occurred.
The officer found that his car into the air, had accelerated from 10 to 15 miles per hour speed indicated.
He added that this information should be written on the mirror: DO NOT PROGRAM THE "CRUISE CONTROL" WHEN THE PAVEMENT IS WET OR ICY, and this, with warning for air bags.
We tell our young drivers to use the "cruise control" and to drive carefully ... Unfortunately, they do not know they should use it only on dry pavement. Let us help them, protect them ...
The only other person involved in the accident was someone who had a similar accident (causing total loss of the vehicle) but had suffered serious injuries.
please. send this information to as many people as possible. If only one of them takes advantage, as it will be worth it.
You may have saved a life!
------------------- ----------------- END OF MESSAGE This message travels since 2002 and has a little truth and a lot of misinformation.
First, this story is a variant of one that told us that a caravan driver had put his trailer on the "cruise control" before leaving his seat to go to cooking eggs in her kitchen back. It would have invoked that nothing in the owner's manual was no suggestion that he would never leave the flying eye! (Obviously, this story is totally false.)
To decode this story, it is essential to understand how it works.
The cruise control. Until about 1950, it was relatively common to find cars with cruise control manual. So instead of having to keep feet long on the accelerator. Simply turn a knob to desired level of acceleration before removing your foot off the pedal.
With the increase in road traffic, cruise control manual has become dangerous. Not only will your car sped on descents and slowed dangerously amount but does not disengage braking function speed control. If, moreover, you had to shift gears and forget to disengage the cruise control manual, you could damage your engine.
were invented, so a mechanism for connecting the vacuum pump throttle the tachometer. Going up a hill or facing the wind, the mechanism will pull the lever on the accelerator, giving the "juice" needed to maintain speed and, conversely, push the lever, thus limiting the power of the engine in a raid.
Currently, the addition of information will only nuanced variations of speed and be more sensitive to driver.
It only remained to add security automatically disabling the cruise control when the brake is used. As safe was also added to the car manual clutch.
is a blind American engineer Ralph Teetor, who in 1945 invented the modern cruise control after having a stressful car journey with his lawyer, a real chatterbox, which accelerated or decelerated according to the rhythm of conversation .
Chrysler was the first to use the invention in its high-end models in 1958, followed shortly by Cadillac in 1960.
A car can accelerate it alone? No. By cons, if in a compressive side of the engine alone is not enough to slow the car, she could keep the speed limit before the regulator is disabled.
observation: "The police found that his car into the air, had accelerated from 10 to 15 miles per hour speed indicated. Is therefore impossible
What prevents the jerk? This is the secret of the email we examine.
First, a very smooth asphalt and wide tires are a bad combination. The hydroplaning is much easier than on a road very uneven (or even gravel!) And thin tires with a low surface area. It's the same difference between a heel and a flat heel. A stiletto heel can penetrate the water film, while a flat heel will not drain the water and slip covered. The patterns on the tire are so critical because the vehicle's weight alone is not enough to pierce the water surface.
If the patterns used on your tires are not sufficient to provide channels evacuation of excess water on the road, then hydroplaning watching you. Then you have the sensation of speed just because you can not slow down or stop. The feeling of "flying in the air" is what it is: an impression, not reality.
The culprit here is not the cruise control, but poor maintenance.
- If you are those who keep your tires until the patterns are cleared, there is nothing to do for you.
- Improper wheel alignment can also cause premature wear of some tires causing increased risk of accidents.
- tired dampers can also promote hydroplaning if they keep the wheel in the air after hitting a variation on the asphalt and allowed water to accumulate between tire and road.
What is the relationship between cruise control and hydroplaning? Not much other than report the pilot's ability to intervene before an unexpected road. But note this:
- Once the cruise control activated, after the foot has left the accelerator, one feels less variations of the state road.
- In general, people deal with the unexpected deactivate the cruise control by pressing the brakes. On an area prone to hydroplaning, it would cause the risk of locking the brakes and abort your chance to take control of your car. ABS brakes are in this case the solution.
- If the driver removes his foot from the accelerator, trying to deactivate the cruise control, he would run the risk of putting his foot on the wrong pedal and accelerating. Note also that the electronic accelerators deprive any sensitivity on the foot pedal. The
- cruise control does not know the road. He does not know if you're in a curve to the left or if you're still straight. If you do not have front-wheel drive, the car has no way of knowing if your front wheels have lost traction in a curve. Brakes will not be a solution.
- The cruise down your level of attention. Your reaction time is much reduced, regardless of road conditions.
We therefore conclude that this story is false, except as regards the recommendation to always pay attention to the road, even if you drive an 18 wheeled convertible diesel and pull back and you get espresso transfusion. Currently, no system can replace your attention.
