Nissan Titan Forum - View Single Post - Detroit Locker, ARB air locker, Easton e-locker

Sammy Sandbag · 11-05-2004, 08:47 PM

I think you are classifying many differentials that are actually automatic lockers as LSDs, which they all aren't. Often a automatic locker will contain a spiral spring labeled as a clutch pack, but it isn't the same as a clutch pack in a LSD. A traditional auto locker would use two sets of interlocking grooved discs that lock up. An LSD, as it's name implies, allows for slip between the two axles, they are not "locked". Torque is transfered between the two, or biased, which works well for on road purposes were the traction differences between the wheels isn't that great. An auto locker allows zero slippage, because as the name implies, the axles are locked together except that one may rotate faster than the ring gear for turning. If you have been off-roading for many many years, surely you have heard of a Detroit Locker, probably the best known name in differential traction aids. They are famous because of their automatic locker. User selectable lockers (ARB, Detroit Eletrac, Ox) are basically selectable spools, where there is no speed differential between the two axles whenever it is engaged.

http://www.bc4x4.com/faqs/yj.cfm?cat=7&faqid=156
http://www.pps.net.au/4wdencounter/a...difflocks.html
http://www.4wheeloffroad.com/techart...43/index4.html
http://www.tractech.com/Products.htm

11-05-2004, 08:47 PM	#21 (permalink)
Sammy Sandbag Super Moderator iTrader: (5) Join Date: Apr 2004 Location: Iraq Posts: 6,020 Thanks: 0 Thanked 3 Times in 3 Posts	I think you are classifying many differentials that are actually automatic lockers as LSDs, which they all aren't. Often a automatic locker will contain a spiral spring labeled as a clutch pack, but it isn't the same as a clutch pack in a LSD. A traditional auto locker would use two sets of interlocking grooved discs that lock up. An LSD, as it's name implies, allows for slip between the two axles, they are not "locked". Torque is transfered between the two, or biased, which works well for on road purposes were the traction differences between the wheels isn't that great. An auto locker allows zero slippage, because as the name implies, the axles are locked together except that one may rotate faster than the ring gear for turning. If you have been off-roading for many many years, surely you have heard of a Detroit Locker, probably the best known name in differential traction aids. They are famous because of their automatic locker. User selectable lockers (ARB, Detroit Eletrac, Ox) are basically selectable spools, where there is no speed differential between the two axles whenever it is engaged. http://www.bc4x4.com/faqs/yj.cfm?cat=7&faqid=156 http://www.pps.net.au/4wdencounter/a...difflocks.html http://www.4wheeloffroad.com/techart...43/index4.html http://www.tractech.com/Products.htm Last edited by sammy sandbag; 11-05-2004 at 08:59 PM.