0.5 mod pinions
 

Does any one now were I can find some 20 to 23t pinions with the standard 1/10 shaft size

The only ones that come to mind are from the old Tamiya Super Astute - so a VINTAGE part and maybe not easy to find.

Did a little digging and #53080, #53081 and #53082 are what you need to look for.

RW Racing might be able to cut them for you as well.

Speak to RW, they can make them for you.

RW have produced a batch of 0.5 mod for 3.17mm (1/8th) shaft, from 15t to 23t very recently so give them a call.