Revo Hybrid diff V3

[isuck@rc]

Originally Posted by Gallagher

I use shims in the side opposite to ring gear to reduce the tightness between the ring gear and the pinion. My stock revo diffs have the same problem. I shimed it and ignore it. Of coure, it is not a thorough way to solve the problem.

I'm no where near as experienced with RC as any of you but i noticed all 4 of my revo diffs -two 2nd hand 2 new do the same thing as what simple is saying as well as my v3's. i guess it's normal but i'm going to shim just incase considering thje money invested.

[simplechamp]

One of the main reasons I bought the V3's were to remedy the wobble/binding of the stock E-revo diffs. I would try out a different pair of diffs, but I don't want to spend the money when there is most likely an easy fix to get the V3 diffs assembled properly. I might buy a pair plastic diff cups from Mugen or Ofna and see if those can work. I'm fairly certain it's the diff cups causing the issue.

Also, I have a Caster F8T truggy on the way. It has the same diffs that come in the V3 kits. Once it arrives I'll pull the diffs out and see if they suffer from the same misalignment issues. Maybe the diff cups we got with the V3's are just a bad batch?

I'll email Mike again and link him to this thread. Maybe he can test a few of the diffs he has and see what's going on.

I also think the plastic diff cup is the culprit. I measured the ring gear today, and it seems to be completely flat and true.

The cup, on the other hand, seems to be a little warped. If I measure the outside diameter of the cup, it measures between 29.6mm and 30mm depending on where you measure it..
The inside diameter of the ring gear is 30mm and has a little corner radius, so when you screw the pieces together the sharp corner of the plastic cup actually rests agains the corner radius in the ring gear in some places.
Maybe putting a little chamfer on the cup will help solve the problem?
I'll give it a try tomorrow.