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Running Different diff Ratios
Posted: Tue Jul 12, 2005 9:53 am
by suzi_shawn
What happens when running different ratios what other problems does it cause and so on
thanks
Posted: Tue Jul 12, 2005 12:27 pm
by 83 lux
wheels turn at different speeds binding up the t-case and snapping it into 100000000000000000000 pieces
you can get away with 11% difference i think
but yer not really something you should do
Ruff did run 4.11 in the front and a 4.3 in the rear but i really dont know how that turned out
Scotty
Posted: Tue Jul 12, 2005 1:51 pm
by Busiboy
Not very pretty results,
Wind up etc, Hard to change out of 4x4 and the whole exploding transfer case thing.
If you try it hook up a video camera underneath focused on the transfer, would be funny to watch.
I doubt running anything but matching ratios is really a good idea.
Posted: Tue Jul 12, 2005 2:00 pm
by Shadow
this would be very bad,
imagine navigating a side slope and your front wheels are woundup so bad they break traction and send you over/sliding etc.
when your wheel spinning it wont be a problem, its when you are crawling in precarious positoons that will be a major problem. Also driving on bitumen for even short periods will cause significant windup and could lead to breakages very easily. (although according to some people driving on bitumen in 4wd is not a risk!!!!!!!!!!!)
why cant you get the same ratio diff?, different model diff housings front and back? or just to lazy/cheap
Posted: Tue Jul 12, 2005 2:49 pm
by sierrajim
There was a thread on this in the zook section a couple of weeks ago from memory. I think CJ posted it.
Posted: Tue Jul 12, 2005 6:33 pm
by RUFF
83 lux wrote:wheels turn at different speeds binding up the t-case and snapping it into 100000000000000000000 pieces
you can get away with 11% difference i think
but yer not really something you should do
Ruff did run 4.11 in the front and a 4.3 in the rear but i really dont know how that turned out
Scotty
I wouldnt do it with a hilux Transfer unless it was to finish a competition. Mine worked fine because i run a Rover Transfer that has a centre diff so unless the centre diff is locked it causes no problem at all.
Posted: Tue Jul 12, 2005 10:08 pm
by bigpat
Friend drove his Bronco on beaches, with 4.11 front, & 3.5 rear. Fried clutch, and f%$ked t-case was the result......
Posted: Tue Jul 12, 2005 11:27 pm
by Roktruk
Yup, simple answer - don't do it. Even running different tyres front/rear can cause wind up, and unless there's some wheelspin, breakage occurs. Ages back this was aksed, and I calculated the differnce in wheel speed with the exact ratios mentioned. Not pretty