Originally Posted by
tds101
Thoughts? Find a suitable compatible chainring and swap it out. See if the gearing is high enough for you. Just remember that the chain might need to be lengthened.
Now, for your viewing pleasure, here's the Sheldon Brown page with the gear inch calculator. It's a handy page to favorite/bookmark:
https://www.sheldonbrown.com/gear-calc.html
To clarify, which dealer is correct?
Must I use a special chainring for Yamaha motors and/or Giant e-Bikes?