There is no drive/torque sent to the rear wheels unless the fronts are slipping. In theory if the fronts were slipping 100%, the rears would have 100% of the torque. There is no torque split per se. If the fronts were slipping 50%, then 50% of the torque would go to the rear wheels. If it was 20% slip at the fornt wheels, then 20% would go to the rear wheels. Its a mechanical system. There is no electronic wizardry "distributing" torque.
Based on the gear ratios, the fronts can only slip 0.12% (yes that's right, less than 1%) before the viscous coupler starts to lock.
this kind of goes with a thread i post a long while ago about my 4wd not working. on the icy roads in the winter here in oregon my front tires spin insanely and i don't believe my rear tires are getting any power to them... Any ideas on how I can check this to see if the rear are getting torque?
There is no drive/torque sent to the rear wheels unless the fronts are slipping. In theory if the fronts were slipping 100%, the rears would have 100% of the torque. There is no torque split per se. If the fronts were slipping 50%, then 50% of the torque would go to the rear wheels. If it was 20% slip at the fornt wheels, then 20% would go to the rear wheels. Its a mechanical system. There is no electronic wizardry "distributing" torque.
Based on the gear ratios, the fronts can only slip 0.12% (yes that's right, less than 1%) before the viscous coupler starts to lock.
It's not 'if the fronts are slipping' it's 'if there is a difference in speed between the front and rear sections of the driveshaft'. So sitting the front wheels on a free roller and the rear wheels on non moving concrete is going to do what...
I'm gonna start bashing my head against the desk soon.
Two options, either disable RT4WD or run it on a 4WD dyno.
I totally agree with you. He needs to disable the drive to the rear wheels, plain and simple, or run it on an AWD dyno. The lever on the transmission will do that for him. Make sure the lever is moved full travel to the 2WD setting, and tighten down the locking nut. Done deal.
If you jack the car up on 4 jack stands, start the car and put it into gear, you should see the rear wheels turning. If they don't something's up. It could be a simple as the 2WD/4WD lever (do a search) being in the 2WD setting. Make sure the car is totally stable on the jack stands on a flat surface before starting the engine.
If you jack the car up on 4 jack stands, start the car and put it into gear, you should see the rear wheels turning. If they don't something's up. It could be a simple as the 2WD/4WD lever (do a search) being in the 2WD setting. Make sure the car is totally stable on the jack stands on a flat surface before starting the engine.
I totally agree with you. He needs to disable the drive to the rear wheels, plain and simple, or run it on an AWD dyno. The lever on the transmission will do that for him. Make sure the lever is moved full travel to the 2WD setting, and tighten down the locking nut. Done deal.
If you jack the car up on 4 jack stands, start the car and put it into gear, you should see the rear wheels turning. If they don't something's up. It could be a simple as the 2WD/4WD lever (do a search) being in the 2WD setting. Make sure the car is totally stable on the jack stands on a flat surface before starting the engine.
I'm gonna do this, but I'll just put the car on jacks and leave it halfway up my sloped driveway...because I like to live on the edge
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this kind of goes with a thread i post a long while ago about my 4wd not working. on the icy roads in the winter here in oregon my front tires spin insanely and i don't believe my rear tires are getting any power to them... Any ideas on how I can check this to see if the rear are getting torque?
It's not 'if the fronts are slipping' it's 'if there is a difference in speed between the front and rear sections of the driveshaft'. So sitting the front wheels on a free roller and the rear wheels on non moving concrete is going to do what...
I'm gonna start bashing my head against the desk soon.
Two options, either disable RT4WD or run it on a 4WD dyno.
/thread
If you jack the car up on 4 jack stands, start the car and put it into gear, you should see the rear wheels turning. If they don't something's up. It could be a simple as the 2WD/4WD lever (do a search) being in the 2WD setting. Make sure the car is totally stable on the jack stands on a flat surface before starting the engine.
i'll give that a shot sometime..