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RWDboy Forums Junkie Location: South Australia Registered: July 2002	Re: whats a LSD? Mon, 08 March 2004 04:55 Okay - here's a quickie, I checked this in race car vehicle dynamics and it would seem that a open diff is a torque-splitting device. Some quotes from race car vehicle dynamics "The open differential cleverly allows the sum of the outside and inside wheel rotational velocities to equal a constant while allowing one wheel to speed up and the other to slow down. Of course, another result of the differential mechanism is that torque is split equally between the two sides and if one wheel loses traction the total drive force available will be just twice the force available from the tire with the least grip" "In a real open differential there is stick-slip (Coulomb friction) in all the gear meshes and bearings and a small amount of hydraulic damping (proprotional to velocity or velocity squared) due to oil churning. This is shown in figure 20.3 which shows a small step in (delta)Torque with increase in (delta)RPM. The result of the friction is to slightly lock the two output shafts together. This gives a small offset to the theoritically even torque split. The wheel that gets the more torque is always the slower wheel". I could scan in figure 20.3 but I'll just explain, (delta)Torque is the difference in output torque between the two shafts, and (delta)RPM is the difference between the rotational velocity of the two output shafts. (delta)Torque is shown to be zero at all times (theoritically). So there you have it, open differential is a torque-splitting device. [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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