andyharding
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| posted on 16/6/07 at 06:27 PM |
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Here's one for you - LSD question
Take an example of a car fitted with viscous LSD i.e. a Locost using Sierra diff.
Under hard breaking the rear wheels are close to but have not locked.
Right wheel hits a damp patch of road causing a reduction in grip on that wheel and so it starts to lock.
Does the LSD work in reverse as a kind of crude ABS and and stop the wheel locking by taking "power" from the still turning wheel?
[Edited on 16/6/07 by andyharding]
Are you a Mac user or a retard?
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ed_crouch
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| posted on 16/6/07 at 06:32 PM |
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If youre slowing down faster than the engine would on overrun (i.e. the engine is still torqueing the drivetrain in the normal way), then itll work in
exactly the same way.
If youre not slowing down faster than the engine would on overrun, then things get a little tricky, and it'll probably depend on the design of
the LSD unit.
Ed.
I-iii-iii-iii-ts ME!
Hurrah.
www.wings-and-wheels.net
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mark chandler
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| posted on 16/6/07 at 07:06 PM |
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Sierra diff is viscous based so will not care about direction, so yes, if you hit a slippery patch on one side when braking that wheel should not lock
up, but will spin slower than the one with grip.
Regards Mark
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smart51
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| posted on 16/6/07 at 07:09 PM |
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If you lock one of the back wheels, there will be a difference in speed between the two rear wheels and the LSD will try to limit the slip. That is,
it will try to speed up the locked wheel and slow down the turning wheel by coupling them together through the diff.
either the locked wheel will start to turn or the other wheel will start to lock, perhaps both.
I recently changed my front calipers, discs and pads. It lead to rear end lock up. You can lock up a rear wheel with an LSD. Because the car
pulled, I think that only 1 wheel locked up. Perhaps the LSD did nothing after all, or perhaps the speed was so slow that nothing much happened. I
didn't try locking the rears at 70 MPH in case I didn't like what happened.
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