The Tongxin controller has some fins on the cover which makes me think it's designed to prevent overheating.
Is that the case and in turn the controller needs to be mounted in an open airstream position on the bike, or could it be secured in place in a box along with battery and be neater or would it then be likely to overheat.
Is that the case and in turn the controller needs to be mounted in an open airstream position on the bike, or could it be secured in place in a box along with battery and be neater or would it then be likely to overheat.