Re: TOY: Rumors of Marlin's Axles

[Thom Singer <ntsqd@xxxxxxxxxxxx>]

thebeebs@jps.net wrote:
> 
> High-pinion electric locker used in the rear is as strong as a Turbo/V6 diff
> in the rear? Merely because of one larger bearing? I'm not sure I buy that.
> Seems to me like the teeth being used in the weaker direction would be the major
> limiting factor on strength, but that's just a guess. I'm curious what others
> more knowledgeable than me think.

Hi pinion front designs used in rear axles are driving on the coast side of the teeth. I read somewhere once, and I'm not sure of the exact validity of it but,
when using a high pinion in the rear strength should be regarded as ~15% less than when used in the front. Seems like a reasonable rule of thumb.

> > From: Williams, Lance [mailto:lwilliams@cov.com]
snipped....
> >  He told me that he did chip several
> > teeth off of the ring gear (not a snapped pinion) and he thought it was
> > due to axle wrap which he said he had major problems with.  (doesn't
> > make sense to me, but I was not going to argue with his assesment of the
> > problem - his truck, not mine) 

This is easily possible, I can show anyone two sets of R&P's from exactly this damage. Didn't learn the first time, had to do it again. :(
The problem comes from wheel hop loading and unloading the R&P. I'm surprised he hasn't had driveshaft failures too. The dynamic stresses can be really high in
a very short time frame. Presto !! Instant gear chunks.
If you're going to abuse gears this way you need to look into the alloy (9310 ?) used in Drag Racing gears, it's a softer alloy/heat treat combo so lifespan is
less, but those will take the hammering better.

-- 
TS
Chico, CA

I'm as confused as a baby in a topless bar.