The charger is based of a relatively simple design, employing a 5.2 HP Kubota 4 stroke motor and a 12v car alternator to provide ... says that the charger/generator only needs to run about 5 ...

[DIY King] bolted one to the back of a old bicycle and got some impressive, and frankly a bit terrifying, results. We should say up front that the required modifications to the alternator are ...