i am lookin at using a carstarter moter for my bot because i have a low budgit and can get one at a scrap yard for a couple of bucks i was wondering if they can go in reverse if the curent is reversed i know that i have to cut the field winding coil wires and conect them directly to a battery and take out the selanoid but if i reverse the curent after that will the motor reverse or is there some kind of mecanical catch to stop it from reversing
and dose the selanoid move the gear on the motor or the whole insides of the motor and the shaft that comes out how long do they last do they burn out after a certan amout of time or do they last a while can you give me rough specs of a starter motor like hp torke and rpm