> 200W? It is like 1/4 hp, is not it? Not sure how well it would > drive any sort of vehicle? I think it's more like an assist. The Crystalyte and Estelle are a couple of kW, but the downside of those is the weight of batteries needed. Both those suppliers are not forthcoming with range figures, which I expect would be fairly meagre, saying in effect only that the harder you run the motor the lower the range. The minimum you'd want to run them is to cover the extra weight. The temptation might be to use the motor more than necessary, and then you get to thinking about "necessary" Even if you could fit one of those high wattage systems in NZ, over 300W =3D paperwork http://www.nzta.govt.nz/vehicle/your/low-powered.html Joe --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .