I've read in multiple forums that shaving 1mm is not going to hurt the fork. I will say that adding a torque arm has been recommended by several sources. I did not order one but am now reconsidering ordering one before the spring. Small 250 watt motors don't seem to require one.
I'm trying to write this thread as a 1st time user of electric, each hurdle I've hit is because of the bike, not Swytch. I want people to be aware that the fork should be 10mm (did not know that) and that a crank with no clearance requires modifications. Based on what I'm reading out there this impacts any conversion...not just Swytch.
I like what this user made...
plug and color coded wiring was easy to follow and my test run showed everything working and moving in the correct direction so whew!