Almost all inner shaft failures I've seen aren't a quick "pop it out, pop it in". Most break right at the splines near the locker and rarely come out easy. Unless you're getting way deep into the diff on the trail, the ability to "quickly get back on the trail" is a bit romanticized.
That’s what I get for tronzing at 6:10 am…
Just a heads up, you won't get much love for sleeving a Dana 30 here... the juice is never worth the squeeze and it often causes more issues than it helps.
Maybe this will help. And, you really shouldn't ignore it.
Lots of misunderstanding about what goes on regarding stub shafts. Given that the Rubicon is a 30 spline inner with the exact same 27 spline outer that the early TJ non Rubi runs, why don't they fail all the time? What does Jeep know that lots of folks don't? Why would Jeep run a wimpy little outer with a 30 spline inner if it was just going to fail?
I read something recently, when researching gears, where Motive stated "To avoid breaking, engineers specify 4340 or 4140 chrome moly steel capable of twisting 190 degrees and springing back without breaking". This seems insane, so I have to ask if that is really the case with 4340 shafts in general?
No good way to get there from here. The large joint stub for either the small or large hub conversion does not exist. Avoid the RCV version for the larger hub kit because it is the smaller bell that fits through the hole in the older CJ knuckle and isn't as strong as the one that fits in the stock TJ application.
Yes and no. You won't do that to the short side, but properly heat treated, entirely possible with the long side and the rear shafts.
Oh my god, we can't buy our own rig specific spares and toss them in the motorhome? Oh, the horror.
Same diameter, same seal surface, different lengths and locations for the seal surfaces.
Thanks for explaining this!I have a super 30 kit for sale on here now,but already installed the USA high dollar 27 axles,wished I new this first.oh well
When I developed those large joint axles for Revolution, I strongly urged them not to build the 27 spline inner since that is a product that should not exist.
He already has a non stock brake set up. If he loses a tire and fucks a rotor, who is he going to borrow one from and who carries a spare rotor anyway?
I have a 27 arb and these overpriced revolution axles,I’ll just have to take it slow I guess,thanks -jeff
@mrblaine i have no problem keeping buying and keeping spares with me. (I have a spares box, electrical sensors,u joints, fuel pump, on the Jeep with me) the information I was after are the rubicon axles the same as the 30 spline inners for my axle? (For personal knowledge & so if I come upon a set I can pick them up as spares) but now that I think about it the 44 housing is bigger that puts the axle seal surface out further on the axle and the length would be most likely be different. It sounds like the extra $ and a couple hours of my labor for dropping the carrier out and changing to the 30 spline sidegears is worth it.
I believe that Revolution sends out a 30 spline short side for either a Super 30 or Rubi 44 and they made a longer seal surface to be able to do that or they just have a somewhat longer one anyway. The long sides are not the same though, so they have to have both lengths for the two applications. Also be aware that it is common for the Disco stuff to be too long and need to be trimmed down. I had to do that to my 44. If you turn the knuckle and it binds up pointed straight ahead, the inner is too long and cutting about 1/8" off the splines generally fixes it.
