i only have 16, 18, and 20T pinions for my feigao... do you think that I can use a drilled 3mm pinion in place of the 5mm bore ones from Kershaw? if yes i can drill all my old HVmaxx pinions...
Let me the time to try, i just have woke up...

Acceleration is awesome, but top speed is very slow... my hvmaxx was really faster...