What are the measurements inside the front forks for the motor to sit in? Can the kits go on all forks?
The distance from fork to fork should be 10cm. The distance between the fork gaps where the wheel axle sits should be 1cm. Nearly all bicycles have these dimensions. You should have steel forks due to the strong motor torque. Chromoly forks are very good. Check there is some steel in your forks by making sure a magnet sticks to them. Don’t use carbon forks – the end of the fork tip may snap off, some people install these kits on bikes with light aluminium alloy forks but strong steel forks are better. Ask us to send you a torque bar (read next question) if using a lighter alloy or high motor power or if you are concerned about the strength of your forks. About 1 in 20 sets of forks seem to be not ideal due to either the fork gap is too narrow and excess filing would weaken them too much or else an abnormal fork shape restricts the larger axle nuts being able to lock the axle to the forks. Please see the picture from the next question to see a typical set of forks that works well.
