Cen Nemesis XL Brushless Conversion

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Originally Posted by mothman

I always wonder how can the durability/strength be improved by increasing the ball end. Same thing happen to Savage drive shaft. they increase the ball end size from 9mm to 11mm. I think the wall thickness of the drive cups/outputs are just the same?

Look at how the shaft is narrowed at the end where it attaches to the ball on the middle standard CEN cvd. A larger ball has a larger area attaching it to the shaft = more strength.