pinion gear is our made some,we made a gear is easy in TAIWAN.
only one consideration is steel material must be over spur.

like i said, we have a lot people made 1/8 CRT truggy conv to BL.
setup like same, all of run stock spur and this pinion gear over 5 or 7 month
pinion gear good and fine not eat anything.

sorry my poor english,
Thank you..

hi BrianG, what is FD ?