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Loosing power to 1 wheel

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robmob

robmob

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Yesterday I was running in a dirt and gravel lot with pretty dusty conditions. Truck tooks a few hard tumbles, then it started to loose power to the right rear wheel. When I gave it a kick in wheel it would work fine. It would go fine for awhile then do it again. Visually I can't see anything wrong. CVD just stops spinning. I am running MIP CVD's with the stock diffs.

Any thoughts before I tear it apart?
 
Hmmm I say the diff out drive has come loose somehow dependindg on how it ties together. Does it have an actual outdrive or a whole shaft that go's through the diff and tie into a gear??
 
newnitrofan probably has it solved for you. I believe the outdrive cups are kept in place with an allen set screw and it probably came loose enough to allow the cup to spin on the output shaft.
 
The diff is stock. I have never had it apart. The only mod I did was to add the MIP CVD cup which is still tightly secured.

It has got me stumped. I picked it up while it was having the problem and applied the throttle sure enough the nothing moves. If I rotate the tire a little it works fine. Something on that side must be blown in the diff. It did it about 4 times while running through 2 tanks. It did take a bad tumble at wot which resulted in about half a dozen flips. It looked like a beach ball bouncing across the ground. Luckily I have a RC Solutions cage. It took most of the damage besides the body.

I was going to tear it down and put in a RRP FOC anyway. I guess I will just pick up the RRP diff gears and upgrade there as well.

Originally posted by militarymaxx
newnitrofan probably has it solved for you. I believe the outdrive cups are kept in place with an allen set screw and it probably came loose enough to allow the cup to spin on the output shaft.
Click to expand...

I will double check it.
 
Sounds like you fried the spiders to me.. Sounds like the proper syptoms.. Hope its something simpler though..
 
I would suggest checking the bearings at the knuckle. I was consistantly destroying one corner's bearings and that corner would basically stop working. I upgraded the bearings and had no more problems.

I think everyone else pretty much covered the remaining possibilities.
 
Cup is secured.

Bearings are fine. I have RPM knuckles/bearings which are new.

Guess its must be the gears.
 
I figured out the cause. Rocks were getting wedged between the axle carrier and the wheel. There are marks on top of the axle carrier that I could not figure out how they got there. Then I remembered all the AB rock that was in areas where I was running. Makes sense, when I kicked the tire, the rock fell out and off it went. Still need to tear it down since the rear diff is a lot harder to turn by hand than the front.
 
I had the same thing happen to me yesterday. I couldn't hardly see the rock, but it sure put a cramp in my style for a while.

Poet and didn't know it. LOL!!!
 
I run on gravel a lot, it happens 3-4 times an outing almost once per tank..

If I'm on flat ground oe of the wheels will lock up and it'll do circles. Just lift the turck hit the throttle.. and off it goes.
 
That is what was happening. My co-workers thought it was cool since it was kicking up its own dust devil. I was thinking WTF.

I took apart the rear diff and my output shaft bearings are shot. When I attempt to spin them they are both sound and feel like they are packed with sand. All the gears look good though. I am not going to mess with cleaning the bearings. Gonna pick-up a set of Team Blue Star Bearings to install instead. Also going to put in Kippster cups with RRP gears while I have the thing apart. And of course since I had to remove the mill, I might as well remove the tranny and put in the RRP FOC I already have the parts for. I didn't plan on a complete tear down, but it looks like that is where I am heading.
 
Might as well do it now at the beginning of the season. That way you can get more play time out of it... maybe until the fall before you need to repack the diffs and whatnot.
 
at least you didnt have a spool in the back, think of all the damage it would have doneif it sudenly made both wheels stop...
 

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