Jim - Talk with Fitz at Fxaeromodels.com before you order to make certain the pitch of these pinions is compatible with your Quick gears. Different moduli won't interface and work as required and to complicate matters metric and SAE pitches are different. Just be certain before reaching for the CC($$$)
Cheers - Boyd AMA 80393
Major USAF
Retired
Cheers - Boyd AMA80393 IRCHA 3355 Major USAF Retired