Thursday, July 2, 2020

How the limited slip LOCKING 4 x 4 differential works - and why they fail - Amazing - Clutch Packs INSIDE the differentials!

computer animation vid

So this extra "torque" to engage the slip differential then "cracks" the internal gears.

Very wild.
it's more complex that a conventional limited slip differential for sure.
  The locking action of the differential doesn't kick in at an exact speed. It begins to lock whenever there is a difference in speed between the left and right axles of about 150 rpms. However, the locking feature is mechanically disabled at speeds above 25 mph for safety purposes. (cornering at speeds above 25 mph with locked rear end could cause severe "fish tailing" and loss of vehicle control).
  At some point, both axle seals began leaking, ran low on lube, and tore itself up. I can't blame that, on the differential, or, Eaton.
 At a predetermined RPM a speed sensitive flyweight system and pawl engage or disengage a clutch pack very similar to a "limited slip" differential. It has clutch packs folks.
 I have intentionally locked my g 80, one tire on ice one on pavement. It locked both Axle shafts. It works nothing like a limited slip. A LSD will slip in the same situation. I tried it with my car.
 The G80 acts both as a limited slip as well as a locker.
 the clutches are there to gradually lock the other side avoiding abrupt locking and/or damage. Remember all the other 100% locking differentials make you stop before you active the lock whether electric or air.
 Open Differential 4 x 4 versus Limited Slip Locking 2WD in mud-snow vid
  I've owned 2 vehicles that had them and they both broke. The teeth wore off the shaft and it made a chattering chirping noise.
 Eaton G80 limited slip LOCKING differential promo vid
 When the G80 activates it sounds painful for the axles
  Some have just failed with minor damage, I've had 3 that exploded, breaking the carrier in half. They're weak, and GM knows it.
https://www.eaton.com/us/en-us/catalog/differentials/mlocker.html
Eaton's MLocker mechanical locking differential provides drivers best-in-class traction without the need for push-buttons, shift knobs or other intervention method. Utilizing a flyweight mechanism and self-energizing clutch system, the Eaton MLocker engages in low traction situations when a wheel speed difference of 100 RPM or greater (left-to-right) is detected.

Automatic locking takes place within a fraction of a second, providing the driver with increased safety and confidence when traveling on wet or icy roads, gravel, mud and dirt. The mechanical locker is also compatible with existing anti-lock brake and vehicle stability systems, which simplifies platform integration for global OEMs.

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