[muratti]

Originally Posted by Jan Larsen

No, the splines on the pulley that connect to the center drive hub rounds out. Most likely due to the power I put in the car - SP5,5T. Trying to source a new hub (# 3454427), but that is next to impossible. Its three years old so its excused, but had Tamiya made the pulley itself in metal instead of plastic this wouldnt have been a problem. But then again, I dont think they designet the car with ultra high grip carpet like I ran on. No wheelspin with 5,5T motors is putting a lot of stress on the drivetrain.

I found many benefits with the Pumilio diffs. The stock tamiya geardiff gears break, these wont. Neither will the outdrives wear, mines been on the car for nearly 2 years now with all carpet running and they still look like new. It does wear the driveshaft bone a little though, but thats easily replaced.
The only issue I've found is that you need to refill with oil every 30-40 run. I've yet to find an o-ring thats everlasting. Its not a big deal - unscrew 4 screws, pour oil in, screw 4 screws back in.
Drive wise they feel the same as balldiff but with added punch. No slip.

PM sent.

Hey Jan,

got your pm, interesting these Gear diffs. We will talk again after i have seen the pics.