- Messages
- 116
- Reaction score
- 138
- Location
- Vancouver, BC
- Arrma RC's
- Granite
- Kraton 6s
- Senton 6s
- Typhon 6s
Spent all afternoon wrenching on my Typhon 6s trying to figure out what's causing my center diff to heat up. After only a 2-3 mins run, my center diff heated up to 127F, while motor was still at 82F. Brought the rig back home and found a bad bearing on the front right hub. Replaced that and went out again. Something still doesn't feel right so I checked temps again and found the center diff is still heating up.
This time I did a full tear down and after an hour or so of frustration testing different things, found the front diff binding between the pinion and main gear. Thought it was the bearings supporting the pinion so replaced them both but it's still binding. Tested the pinion and main gear on a different diff housing and it's still binding. Finally pinpointed it to the diff cup. So what I think happened was that the bad bearing caused the diff to heat up which caused the diff cup to warp. Didn't have that issue in the center diff because I've an Arrma metal cup there.
The bearing was from a TRB Racing set and relatively new - probably about 10 packs all on dry pavement. So lesson learned, will probably stick with Jims or Fast Eddy in the future. I'll also upgrade the front and rear diff cups to the Arrma metal one once they come back in stock.
This time I did a full tear down and after an hour or so of frustration testing different things, found the front diff binding between the pinion and main gear. Thought it was the bearings supporting the pinion so replaced them both but it's still binding. Tested the pinion and main gear on a different diff housing and it's still binding. Finally pinpointed it to the diff cup. So what I think happened was that the bad bearing caused the diff to heat up which caused the diff cup to warp. Didn't have that issue in the center diff because I've an Arrma metal cup there.
The bearing was from a TRB Racing set and relatively new - probably about 10 packs all on dry pavement. So lesson learned, will probably stick with Jims or Fast Eddy in the future. I'll also upgrade the front and rear diff cups to the Arrma metal one once they come back in stock.