Re: Starting Rickshaw business - PLEASE advise
On a rickshaw, I would use an internally geared electric hub motor to help you get that heavy vehicle moving. Electric motors provide power without having to "spool up" to a suitable RPM like a gas motor. The hub motor batteries will not provide enough range for continuous power assist, but can be used to help accelerate from a stop. You will sweat less and will be less prone to knee injury.
“You're only young once, but you can be immature as long as you like" -Unknown