broken

[Voodoochikin04]

so i get my new kenda bear claws.  going down the trails and even the roads, its all over the place.  drifts back and forth.  on the trials its just unpredictable, throws you around, lame!!!  then yesterday driving over some rough terrain at the off road ranch and the whole rear end breaks. center axle shifted over pushing the bearings from the flanges, bending my sprocket, forming my brake rotor like a symbal from a drum set, tearing one cv axle apart, destroying chain.  lame shit..   oh and all my extra power i had gotten went away and buggy runs like ass..

[fabr]

Carnage sux-got pics?

[Carlriddle]

Crap,  any idea what came loose to start this war.  Hope this was not the case:

I'd say save the big motor for 2nd build .  New tire would give more grip, but put them on 2nd set of wheels, that way you can swap easily. Nothing like droping the hammer in 2nd and the buggy spin in circles in a field.  Grippier tires more prone to break stuff when they hook up.

Least you got all that video to watch, hell had rode mine in two months.

[Voodoochikin04]

the damage thats done, looks like you used a hydraluic press on one side of the center axle and pressed it over.. a ton of force had to be applied to do that damage. but there is zero side load on those parts so i dont get it.  since the center axle shifted over so far it pulled the tripod out from the cup and then ripped the boot and severed connection...  ugh. i dont wanna just fix it and replace parts because i dont want it to happen again. i just dont understand how it happened.

[Nutz4sand]

Pics might (would) help but on the rough terrain is it possible the axle pulled out of the cup first then when it tried to compress the suspension the axle hammered it over?

Can you see marks on the tripod CV case or tripod itself to see if it mashed the metal IF this happened? It would likely leave some evidence.

[Reidy02]

That's the trouble with those big tyres they give ya sooo much traction that any weak point in ya rear will be pointed out, where ya into it when it happened?

[fabr]

Pics might (would) help but on the rough terrain is it possible the axle pulled out of the cup first then when it tried to compress the suspension the axle hammered it over?

Can you see marks on the tripod CV case or tripod itself to see if it mashed the metal IF this happened? It would likely leave some evidence.

I think you're on to something there.

[Boostinjdm]

What Nutz said makes sense.  There is two causes for that.

1. Your geometry is wrong allowing the axle to pop out.
2. Your homemade uprights, or arms, or mounting tabs gave which allowed the axle to pop out.  Start at the outside and work your way in....

Your description of it acting goofy before failure has me thinking #2.

[Voodoochikin04]

none of my tabs, frame or anything is tweaked broken or anything.. and when cyclying the arms with axles installed, the tripod didnt come close to comming out.  my short center steel axle with the two bearings on it, which has the brake rotor, sprocket, and cv axles hubs mounted to was pushed over.  it would make sense that the tripod came out of place and then when the suspension was compressed it forced everything over, except that could not have happened.  from full droop to full bump the tripod never came close to being able to come out. ill get pictures when i go to work on it. the only reason the axle is popped apart now is that the whole assembly shifted all the way to one side which then was allow to pop out and tear the boot.  but that axle could not have shifted unless extreme force was applied. it pushed the bearings out of there flanges, reformed my brake rotor.... crazy.


boost--  yea i checked all that stuff, my uprights, hubs, shocks, mounts, everything to try and figure why is was so squirrely.. but the only thing that changed was the tires..

[Reidy02]

so i get my new kenda bear claws.  going down the trails and even the roads, its all over the place.  drifts back and forth.  on the trials its just unpredictable, throws you around, lame!!!  then yesterday driving over some rough terrain at the off road ranch and the whole rear end breaks. center axle shifted over pushing the bearings from the flanges, bending my sprocket, forming my brake rotor like a symbal from a drum set, tearing one cv axle apart, destroying chain.  lame shit..   oh and all my extra power i had gotten went away and buggy runs like ass..

Sounds like something may have been loose, as you say it was all ova the place, drifting back and forth...

[Nutz4sand]

A few good pics of different angles may help someone see something yah missed maybe?

[Nutz4sand]

none of my tabs, frame or anything is tweaked broken or anything.. and when cyclying the arms with axles installed, the tripod didnt come close to comming out.  my short center steel axle with the two bearings on it, which has the brake rotor, sprocket, and cv axles hubs mounted to was pushed over.  it would make sense that the tripod came out of place and then when the suspension was compressed it forced everything over, except that could not have happened.  from full droop to full bump the tripod never came close to being able to come out. ill get pictures when i go to work on it. the only reason the axle is popped apart now is that the whole assembly shifted all the way to one side which then was allow to pop out and tear the boot.  but that axle could not have shifted unless extreme force was applied. it pushed the bearings out of there flanges, reformed my brake rotor.... crazy.


boost--  yea i checked all that stuff, my uprights, hubs, shocks, mounts, everything to try and figure why is was so squirrely.. but the only thing that changed was the tires..

I would look it over again. There really is nothing else that might generate the force needed. 

Did this all happen RIGHT after a big landing or at least a really hard compression of the rear suspension?

[fabr]

I don'y remember but are you using slip joint axles?

[Boostinjdm]

well if everything is still correct, and your geometry was right, then there is only one possibility left....


Magic.
I'm with Nutz, look it over again.  Something moved whether you think so or not.

[Voodoochikin04]

well... could a bottomed out landing had hit the sprocket, causing it to move the whole axle assembly over, which in turned pulled the tripod cup away from the cv axle and allowed it to rip out?  i had just went over a small bump which bottomed out my rear thats when i noticed the chain had come off. i coasted to a stop, got out and found the massive damage...