Hey all, I'm looking to build a stationary bicycle generator as a fun weekend project but have a couple of questions I can't figure out the answer to. It will be a regular bicycle with the rear wheel elevated and fixed to a stand. A belt will be attached to the wheel and the shaft of an electric motor. Now if I had, for example, an electric motor rated at 2000 rpm and 12V DC, then if I spin the motor at 2000 rpm it will generate close to 12V. If I spin the motor at a higher rpm, will it generate more electricity or will it just damage the motor? I'm looking to use this to charge a 12V car battery to use to power other things. If I spun the motor faster would it charge the battery faster? (I'm pretty sure the answer to that one is no). And if the motor was rated at say 24V, would I still be able to charge the car battery or would it damage it, or possibly charge it faster? I'm new here and apologize if I've posted in the wrong area. Thank you guys for all your help.