Superflext u joints in driveshafts

tonybolton · Dec 21, 2015

http://www.fourwheeler.com/product-reviews/154-0605-jeep-u-joint-upgrade/

Does anyone here run these things?

I've never seen or noticed them out the trails, but always knew about them. Doing some nut/bolt maintenance on the rig a couple times and I've noticed the rear yoke kinda making a mark on the yoke valley. I wanna be cheap and just grind a lil, but this offset u joint might be better?

This is on a trail only rig with single 1350's at each end.

uglyoffroad · Dec 21, 2015

I run one one at the rear t-case output. It works well if you just need a little extra clearance on something that doesn't see highway speeds. its not a bandaid for major driveshaft issues but would probably be some cheap insurance in your case.

tnford88 · Dec 21, 2015

Re:

I got one on my front drive shaft at the axle end but haven't used it yet. All I found on them they fixed binding/rubbing at flexing angles but not bad geometry. I also did it to not grind and keep yoke strength, supposed to flex better than a ground down yoke too.

tonybolton · Dec 21, 2015

Cool. From a non-educated in mechanical engineering point of view, they would appear to be weaker than a regular joint. Not just at an angle, but in linear torque applications as well.

I've got limit straps in the middle of my front and rear axles but have had a bolt break without knowing and the axle would drop until the shocks bottomed out which was about another 3 or 4 inches.

Those joints are pricey, though. I also like how they have zerk fittings on each cap. I'm a big fan of LUUUUUBIN' stuff!

dynajeep · Dec 21, 2015

Had one on the front of my old buggy, LP60. Driveshaft angle was a little steep and it bound at full droop and this cured the bind issue. When they say it vibrates, they ain't kidding... sumbitch felt like it was going to explode at 40mph+. That said it never broke, beat on it pretty good, had 43" stickies, couple sets of r&p, and a few 35 spline chromo axles shafts but never had any issues with the driveshafts.

tonybolton · Dec 21, 2015

I don't think my rig ever sees 30mph

1tonrenegade · Dec 21, 2015

Be sure to grease every ride :****: I ran one on back of t case till I forgot to grease on ride an burnt it up. But I just idle around also :woot:

tonybolton · Dec 21, 2015

Re:

Damn....didn't think of that. It would twist/spin a lot more. Hmmmmm....

roll over dave · Dec 21, 2015

I've ran a 1350 series one for few yr.broke few shafts but joint never failed

jsg1113 · Dec 21, 2015

Been running one on front side of my t-case for almost 2 years now with no problems... Just routine greasing is all I have ever done with it. I did also notice the high speed vibrating.

fordcontraption01 · Dec 21, 2015

I've got a tom woods one 1350 at the rear t case in mine Tony. I'm pretty easy on mine :****:

tonybolton · Dec 21, 2015

Re:

Hmmm....I may give one a try. Didn't expect a lot of first hand experience.

fordcontraption01 · Dec 21, 2015

Now I don't know anything about the vibration issues because the rocks raise emortal hell and I've had this thing probably about 70 to 80 one the road a couple of times

mcutler · Dec 21, 2015

Re:

Going on 5 years with one at midship joint for front drive. Never needed replacing, but did spin the caps constantly until I bout glo girdles. Tom woods brand 1350.

Matt