One tire spin in burnout?
11-30-2003, 07:27 PM
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One tire spin in burnout? Why am I only spinning one tire while doing a powerbrake burnout. This is on street tires. WTF? My only real mods are LS6 cam/springs and a TCI 3500 converter. Is my posi crapped out?
11-30-2003, 11:18 PM
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Originally Posted by OctaneZ28
First thing you'll wanna do is check the diff fluid.
Low fluid can also cause this condition.
Low fluid can also cause this condition.
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12-01-2003, 03:20 PM
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Stock Torsen only splits torque 2:1. Once the first tire
lets loose, its torque falls way back. Sliding friction /
wheel torque can often be less than 1/2 of static
friction and if this is true for the tire*pavement situation
then there is not enough split torque onto the stuck
side, to break it loose. The Torsen is not a "limited slip"
differential (but many others are not true limited slip
either). Limited slip enforces a maximum wheel-wheel
speed difference. Many "posi" types are just friction
between the two sides and simply pass a fixed torque
(spring load and plate friction) to the other side. The
Torsen is a proportional torque split. Better when the
spinning wheel still has a lot of friction torque from the
pavement, worse than posi when it doesn't. With one
wheel in the air you get nothing out of the Torsen.
It was worthless on ice last week...
If only T-2Rs
were cheaper.
lets loose, its torque falls way back. Sliding friction /
wheel torque can often be less than 1/2 of static
friction and if this is true for the tire*pavement situation
then there is not enough split torque onto the stuck
side, to break it loose. The Torsen is not a "limited slip"
differential (but many others are not true limited slip
either). Limited slip enforces a maximum wheel-wheel
speed difference. Many "posi" types are just friction
between the two sides and simply pass a fixed torque
(spring load and plate friction) to the other side. The
Torsen is a proportional torque split. Better when the
spinning wheel still has a lot of friction torque from the
pavement, worse than posi when it doesn't. With one
wheel in the air you get nothing out of the Torsen.
It was worthless on ice last week...
If only T-2Rs were cheaper.
12-02-2003, 11:27 PM
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I'm thinking that maybe I did something wrong. When I do a powerbrake burnout I stop then do the burn. I'm thinking maybe that I need to be slightly rolling forward before I hit the brake and burnout. What do you all think?
12-03-2003, 10:47 PM
#13
Originally Posted by jimmyblue
It was worthless on ice last week... If only T-2Rs
were cheaper.
If only T-2Rs were cheaper.
A little trick for you.
Next time you are stuck with one wheel on ice, in the air or whatever, gently pull the e-brake. It will preload the spinning wheel and then transfer 2.3 times that torque to the stopped wheel....and "poof" you're moving again!
It works great!
12-04-2003, 10:15 AM
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Originally Posted by trackbird
A little trick for you.
Next time you are stuck with one wheel on ice, in the air or whatever, gently pull the e-brake. It will preload the spinning wheel and then transfer 2.3 times that torque to the stopped wheel....and "poof" you're moving again!
It works great!
Next time you are stuck with one wheel on ice, in the air or whatever, gently pull the e-brake. It will preload the spinning wheel and then transfer 2.3 times that torque to the stopped wheel....and "poof" you're moving again!
It works great!
Actually, that was the only way I made it up the hill.
Smelled bad, but better than sliding backward....
As far as the burnout, it's probably a matter of rolling
the pedal into it more gently. Jerk on the axle will unload
the passenger's side more than a slower application of
torque and you may be able to keep the tires within the
torque split limit, into wheelspin on both.
