Direct Drive to Diff E Revo Build

[lincpimp]

Originally Posted by sikeston34m

I'm uploading Video's to Youtube right now. I'll post vids in a few minutes. You're gonna think this belongs on "beat your truck" or something. LOL

The Diffs held up great through the first run, and ummmmm well.........15 minutes into this run, the rear pinion bearings went out. The gears sounded like they were munching on balls.

I'm not sure what to do at this point. The 10/43 gears won't and don't hold up to this kind of power. The spiral cut loads the pinion bearing like a thrust bearing. Even the Ceramic Nitride bearings can't take it.

I might go with the 13/43 straight cut gears and try again. They will tend to side load the bearing instead of loading it like the spiral cut gears are doing. This custom Wye Wind starts better and makes more torque, so I think I still have a shot at it even with the 3.3:1 ratio.

Somebody show me a Diff that can stand it and I can make the power to shove through it. LOL

Sounds like it is time for a needle rooler bearing, not sure if you could find one that is the correct length to replace both of the stock bearings. You would need to have the diff cases machined to remove the two raised portinos that hold the std bearings in place. I vaugely remember that a needle bearing will hold up better than a ball bearing will, in a situation where there is alot of side loading. Sounds like the races are just getting hammered and falling apart.

I have a feeling that the hpi baja diff will be able to handle your outrunner, but it may not fit in the revo very well!