To add to what was said:
The reason why you need BTM is that the Torsen differential has a ratio where it will send up to 4.5 times the torque to one side, and the remainder to the other.
The catch is that if one side has zero traction, you get zero transfer of torque to the other side.
It's my understanding that the stock M998 Torsen differential is 4.5:1, where if you have 100 units of torque on one side, the other gets up to 450 units.
If you have zero traction on one side, BTM will utilize the brakes to "fool" the torsen differential into thinking there's resistance from something, therefore it will spin the other side.
Of course, you eat up your brakes doing it.
On a side note- the reason why your daughter's unit is shuttling vehicles back and forth is because those vehicles belong to that unit. It's part of their TO&E. If it's assigned to them - they are responsible for it.
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by It's a Dry Heat:
How far before you need lockup do you btm?
Does both axels lock or just one of them?
How fast does it engage and disengage?
I know I've been around the forum for almost a year with my H2 and only heard parts of these answers. You guys are quiet down here. Thank you for your time answering.
The reason I'm asking is my daughter a Marine is not tought the trick. maybe military humvees don't have it. There trucks are in the 1994-96 models, They look it too. When they went to Irac there trucks went over on ship, my datghter with the trucks. Then brought the same trucks back. Thats while other marines are moving there trucks back and forth. Thanks again! <HR></BLOCKQUOTE>