Propshaft Orientation

[NylonAdmiral]

I was just putting tbe front prop back on the SJ and noticed that the UJ at the transfer box end seems to achieve wider angles of movement then the UJ at the axle end.

I started a post quite some time ago about the fact that the angle of tbe UJ is a bit tight on my truck because of the amojnt of lift the previous owner built in to. I've just put the prop on backwards and this no longer seems to be a problem.

Can anyone give any good reason why running the prop in this orientation would be a bad idea?

Thanks!

[dan_2k_uk]

More likely to get crap in the sliding part? Dunno really.

[NylonAdmiral]

That was the only thing that immediately sprung to my mind too. I grease it every time ive been out though so the fresh grease pushes any crap out.
Can't really think of anything else?

[turbo-tom]

Wouldnt thought it would cause any problems imo.

[Jordi]

Can't see how one uj would allow more movement than the other. Same ujs on both end isn't it?

[NylonAdmiral]

I know, it's weird.

I wouldn't have thought it would make any difference either but it does. The look pretty similar but I couldn't really say much more than that about whether they're the same.

The angle at the diff end has never been a problem, the angle at the transfer box end will only leave a rizla's gap before binding when the truck is at full droop.

If I swap the prop round then it puts the narrowest UJ at the diff end where the angle isn't a problem and the widest angle at the transfer box end which means there's no chance of binding.

Like I say, can't really think why this would be the case but it does seem to be. The only thing that crossed my mind was if it's maybe an uprated propshaft or something so the one UJ is a bit chunkier but that maybe the other end is standard. Who knows!

[ScottieJ]

Could be a section of a 410 prop, the yokes have quite a bit more clearance than samurai prop yokes.

I always put the short, female end of the shaft at the axle end, just for the fact if you have a failure at speed you can dump the clutch to stop the transmission end of the prop spinning around like a flail but whatever is attached to the axle end wont stop spinning until you stop.

To be honest the damage will most likely already be done by the the time you dump the clutch anyway so it doesn't really matter too much.

[NylonAdmiral]

Good thinking Scott!

Well that's it then, I'm running the prop "backwards".

[ScottieJ]

The "correct way" as in how they left the factory was with the female end at the transfer box.