I am planning a reverse trike substituting an electric motor for a 250cc engine. I want a simple reliable system with range more important than speed. My build would work out to 1300lbs w passengers.
A search through Alibaba shows a number of vehicles being produced in this weight range with motors from 3-7.5 KW.
I know that regular autorickshaws are driven in rallies all around India on a 7HP engine - which is roughly equivalent to 5 kw These vehicles are equal or heavier in weight to mine. There are a bunch of them on Alibaba with 500-1000 watt systems. Cheap kits with controller, pedal etc too. Anyone ever tried one?
So I am leaning towards 5kw. Also, based again on my priorities, what advantage/disadvantage 48V v 60v v 72 system?
I am perfectly happy to go 25-35 mph but I will need to climb some hills.
And finally, has anyone ever played with one of the Chinese electric rickshaw motor kits? The apparently push around vehicles similar in mass to mine with 500-1200 watt systems http://www.alibaba.com/product-gs/373165833/motor_kit_for_tricycle.html