Topic: Front Detroit or Spool?

[neale_rs]

Quite a variety of opinions on this.  I going to bet on my 33" tires to help keep it pretty reliable without putting in a front D44.  If it doesn't turn out then it's plan B.

Thanks for all the ideas.

[Jeffy]

Quite a variety of opinions on this.  I going to bet on my 33" tires to help keep it pretty reliable without putting in a front D44.  If it doesn't turn out then it's plan B.

Thanks for all the ideas.

It really depend on how you drive it.  If you don't need much wheel speed (mud/sand/etc...), then you can probably just go with the stock axle.  More stress is put on the rear then the front since the weight is all behind the front axle which is why D30's hold up well.

[FourbangerYJ]

  More stress is put on the rear then the front since the weight is all behind the front axle which is why D30's hold up well.

I am thinking of saving up to do 35 spline rears with a ARB. I am paranoid about snapping a rear shaft. With 37's and 208:1 I am afraid of getting bound up on something and popping a shaft.

[Jeffy]

I am thinking of saving up to do 35 spline rears with a ARB. I am paranoid about snapping a rear shaft. With 37's and 208:1 I am afraid of getting bound up on something and popping a shaft.

That's what this Jeep runs.  It's Jason Bunch's 2.5L.

[neale_rs]

That 35 spline axle has a severe neckdown.  It even looks smaller in diameter than the axle on the left.

[FourbangerYJ]

Jason was real big in getting the "super" 30 and 44 going. More than likely I'll see them this weekend at HDR. I always like to bend there ears on this kind of stuff.

I do agree that the neckdown does not look very good. I think it has something to do with the stress risers coming off the splined section.

[FourbangerYJ]

That 35 spline axle has a severe neckdown.  It even looks smaller in diameter than the axle on the left.

I agree that it don't look right but according to this it's the proper way a shaft should be made. Look for a PIC about half way down this page. Lots of good info here.
http://www.pirate4x4.com/tech/billavista/PR-BV60/index1b.html

[sharpxmen]

That 35 spline axle has a severe neckdown.  It even looks smaller in diameter than the axle on the left.

yeah, dunno what's up with that - i put that pic in Solidworks and measured the shafts (numbers have no relevance, just for comparison sake) and the neckdown on the 35 spline turned out to be 2.34% thicker than the other one



EDIT:

I agree that it don't look right but according to this it's the proper way a shaft should be made. Look for a PIC about half way down this page. Lots of good info here.
http://www.pirate4x4.com/tech/billavista/PR-BV60/index1b.html

I guess that's the reason, didn't read that whole thread, makes sense, i do think that if the splines are rolled rather than cut you can skip the neckdown or make it less severe (just relief the end of the splines).

[neale_rs]

Very good info on that page. So there's an advanced feature on that shaft, learn something new every day.