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From: jim beam on 10 Aug 2010 11:50
why do people change their pinion angles when they upgrade their axles?
for universal joints to do their job, output angle has to be the same
as input angle otherwise you get angular velocity fluctuations in the
drive train, and subsequently high failure rates. yet i don't think
i've ever seen an upgraded off-road that /doesn't/ have mis-matched
angles. is there a reason?


--
nomina rutrum rutrum
From: N8N on 13 Aug 2010 16:25
On Aug 10, 11:50 am, jim beam <m...(a)privacy.net> wrote:
> why do people change their pinion angles when they upgrade their axles?
>   for universal joints to do their job, output angle has to be the same
> as input angle otherwise you get angular velocity fluctuations in the
> drive train, and subsequently high failure rates.  yet i don't think
> i've ever seen an upgraded off-road that /doesn't/ have mis-matched
> angles.  is there a reason?
>
> --
> nomina rutrum rutrum

I think a lot of those custom driveshafts use CV joints at the xfer
case end, so in that case you'd want the U-joint angle at the axle to
be close to zero.

nate
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