This will be my first electric bicycle project.
I want to order a BBSHD and do the install in an older bicycle.
My question is, is there any way to measure the inside diameter of the bottom bracket to know if there will be issues with installing the Bafang motor?
I ask because I've seen other posts here mentioning an adapter (I'm guessing a sleeve of sorts) that goes into the bottom bracket, How would I know if I need that or not? Could I measure?