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RWDboy Forums Junkie Location: South Australia Registered: July 2002	Re: whats a LSD? Mon, 08 March 2004 06:36 Okay - maybe I should delve a little further... Torque is a force - right? So let's say a wheel is being forced to spin - lets also say that the wheel has little interaction with the surface of the road - this means that the force of friction against the tire/wheel is minimal, such that if you apply torque to that wheel it will spin up faster than that of a wheel which has a frictive (?) force working *against* it. Like I said, a wheel spinning doesn't mean that it has *more* force applied to it, it just means there is less force applied to counter the torque that the output shaft of a diff applies to a wheel. I'm pretty sure, in regards to the 'torque' split between the wheels, that the ONLY way to change the *torque* that one output shaft receives would be to gear it at a different ratio to that of the other output shaft...a normal open differential's 'spider' gears apply the same gearing ratio to each side, hence the 50/50 torque split. Because an open diff will only split torque evenly, then if one wheel is getting a bit of torque and is spinning up like all hell, then the other wheel is getting that same amount of torque (ie bugger all) and it's going nowhere. Corollory : A locked diff does not split torque evenly! Surprised? Yeah I was too. But imagine this, a car is turning around a corner, with a locked diff, one wheel will tend to 'lock/skip' a bit in order to travel the smaller turning arc... Think about that -> that wheel is not applying force to the road of the same magnitude that the other wheel is, the other wheel is pushing the car forward, whereas the locking/skipping wheel is barely moving and is just being tugged along by the car's momentum - this diff is clearly NOT evenly splitting torque as the other wheel is getting torque to speed up! Quote from Race Car Vehicle Dynamics in regards to locked diffs "The torque split to the two wheels is determined by a variety of tire-related factors such as radius of turn (of whole vehicle), revs/mile (circumference of tires), load, and lateral force/friction circle effects. Tire traction characteristics are nonlinear (similar to the lateral force characteristics discussed in Chapter 2) and it is very difficult to determine the torque split at any given operating condition." I hope I'm explaining this well enough...further more, I hope that I am right... [Report message to a moderator]

	Subject	Poster	Date
	whats a LSD?	crayz legz	Sat, 06 March 2004 07:40
	Re: whats a LSD?	Intensevil	Sat, 06 March 2004 07:56
	Re: whats a LSD?	crayz legz	Sat, 06 March 2004 07:57
	Re: whats a LSD?	Cool1	Sat, 06 March 2004 09:38
	Re: whats a LSD?	mrshin	Sat, 06 March 2004 10:20
	Re: whats a LSD?	crayz legz	Sat, 06 March 2004 11:08
	Re: whats a LSD?	crayz legz	Sat, 06 March 2004 11:15
	Re: whats a LSD?	HYP04A	Sat, 06 March 2004 11:23
	Re: whats a LSD?	Fattony	Sun, 07 March 2004 17:27
	Re: whats a LSD?	HYP04A	Sun, 07 March 2004 21:07
	Re: whats a LSD?	RWDboy	Sun, 07 March 2004 21:21
	Re: whats a LSD?	Norbie	Sun, 07 March 2004 23:20
	Re: whats a LSD?	RWDboy	Mon, 08 March 2004 04:22
	Re: whats a LSD?	RWDboy	Mon, 08 March 2004 04:55
	Re: whats a LSD?	oldcorollas	Mon, 08 March 2004 07:48
	Re: whats a LSD?	justcallmefrank	Mon, 08 March 2004 05:58
	Re: whats a LSD?	RWDboy	Mon, 08 March 2004 06:36
	Re: whats a LSD?	Hot Celica	Mon, 08 March 2004 06:44
	Re: whats a LSD?	RWDboy	Mon, 08 March 2004 06:50
	Re: whats a LSD?	Hot Celica	Mon, 08 March 2004 07:02
	Re: whats a LSD?	ed_ma61	Mon, 08 March 2004 09:26
	Re: whats a LSD?	GOT_M.I.L.F.	Mon, 08 March 2004 12:18
	Re: whats a LSD?	THE WITZL	Mon, 08 March 2004 12:27
	Re: whats a LSD?	RWDboy	Mon, 08 March 2004 12:45
	Re: whats a LSD?	Norbie	Mon, 08 March 2004 13:30
	Re: whats a LSD?	T APLUS 22	Mon, 08 March 2004 14:38
	Re: whats a LSD?	RWDboy	Mon, 08 March 2004 13:48
	Re: whats a LSD?	Norbie	Mon, 08 March 2004 13:52
	Re: whats a LSD?	RWDboy	Mon, 08 March 2004 14:20
	Re: whats a LSD?	T APLUS 22	Mon, 08 March 2004 14:33
	Re: whats a LSD?	Zhyr	Mon, 08 March 2004 22:02
	Re: whats a LSD?	HYP04A	Mon, 08 March 2004 22:24
	Re: whats a LSD?	ae95	Mon, 08 March 2004 17:29
	Re: whats a LSD?	RWDboy	Tue, 09 March 2004 01:40
	Re: whats a LSD?	Seadog	Tue, 09 March 2004 04:35
	Re: whats a LSD?	Seadog	Tue, 09 March 2004 04:56

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