- Joined
- Apr 23, 2018
- Messages
- 6,607
If you can deal with bores/counter bores and spacers to get them aligned, diameter doesn't mean much- just the ratio if you want the knee hand crank scale's grad marks to remain meaningful. I suppose you could even go helical for that baby bottom smooth feel. Match up the driven gear as best you can, then fanagle the driving gear to fit. That's why getting a close-enough gear pair is better than sourcing a perfect fit single replacement.