some help with numbers please??? I'm trying to make a very small generator. I had in mind using this engine. It is a wankel engine, designed for rc airplanes and cars. Here are some specs on it: Displacement: 0.303 cu in (5.0 cc) Practical rpm: 2,500-18,000 Output: 1.27 bhp(ps)/17,000 rpm Weight: 11.8 oz (335 g) Now, perhaps you can see my reasoning for wanting to use this engine. My questions start when I try to figure out how much power I can make with this thing. I understand that 1 horsepower is roughly equivalent to 746watts. So does this mean this engine would be capable of generating somewhere around 1kw of electricity? Basically I need some help determing what kind of motor I would use for the generator. For instance, could I use a motor with stats such as this? Operating Voltage: 16-24v No Load RPM 24,000 Amp Draw @ Max Efficiency 21.3a Max Efficiency 82% (info borrowed from here ) Basically, would using such a motor provide me with the ~1kw the mini-wankel can produce (If I'm correct about that?) or would anyone have any suggestions to get more power in a better manner?