Originally Posted by
Lazer Guy
What is the range of pinions that would work with a stock 46t spur and your mount ?
Thank you.
The outer BB pinion supported mount handles pinions up to 18T, and the inner BB supported mount handles the full range. If you don't use beyond 18T in your gearing set up, the outer BB version provides better support for the motor shaft.
The outer BB version is limited physically by the opening it as to pass through in the mount.
So, if you need the full range, then we suggest the inner BB version.