alpg88
Flashlight Enthusiast
- Joined
- Apr 19, 2005
- Messages
- 5,357
weight goes both ways, if it help traction, it hurts braking
Very true! More weight = more forward momentum that needs to be overcome when trying to stop.weight goes both ways, if it help traction, it hurts braking
weight goes both ways, if it help traction, it hurts braking
An old timer (retired electrical engineer used to work at Sandia Labs) believed that narrower tires would get grip through the snowfall to the road surface better than wide, floating tires.
Not 100% true, but certainly not to be taken lightly. Stopping distances will massively increase in slippery conditions. But a 4x4 can have an advantage. If it is along the lines of a proper 4x4 with a transfer case or lockable centre diff, rather than a Haldex style unit.four wheel drive will get you going and doesnt help you stop.
to be honest without any googling I can only name two factory cars that have actual locking diffs - where you can lock both front, back and front-to-back as well -, the Mercedes G class, and the Jeep Rubicon edition. Most 4x4 or 4WD or AWD cars I've seen can lock the rear ( if even that ).Not sure about UK, but in usa very few suvs have such locking diffs
Not 100% true, but certainly not to be taken lightly. Stopping distances will massively increase in slippery conditions. But a 4x4 can have an advantage. If it is along the lines of a proper 4x4 with a transfer case or lockable centre diff, rather than a Haldex style unit.
Using 4wd will essentially lock the front and rear axles together. Under braking this means you get 50:50 brake bias. I.e. both axles will get the same braking force.
For normal road use, cars will generally have a front brake bias (maybe 70:30), because on a normal grippy surface you get a massive weight transfer to the front of the vehicle. So you need more braking effort on the front axle. Likewise the rear will lift, meaning you need less braking effort else the rears will lock up sooner (or induce ABS).
In the snow/ice a front biased brake setup means you ABS will kick in way too early reducing your overall braking effort. Using the transfer box to induce 50:50 brake bias will make the brakes much more effective. The same vehicle may be able to stop a car length or two sooner if used in 4wd.
Traction control has completely different function than diffs.
The traction control system (TCS) detects if a loss of traction occurs among the car's wheels. Upon identifying a wheel that is losing its grip on the road, the system automatically applies the brakes to that individual one or cut down the car's engine power to the slipping wheel.
The differential is a system that allows the drive wheels to turn at different speeds, which is required when the car is negotiating a turn. In a turn, the outside wheel must travel farther, which means it must travel faster than the inside wheels.
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As i mentioned before in other threads, i'm a part owner of a repair/body shop, for over a decade, so i'm pretty confident i know how cars and its component function, i may not be able to solve every electrical problems in modern cars, we got people for that, but fundamental functions, i got down. so thanks for your input, it's been very entertaining. looking forward for your next stand up.
LOL, another pile of rubbish, you need to funny up a bit, you are getting lame.
LOL you actually think i take you seriously enough to have a debate? keep talking your nonsense.