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.
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