Any interest in the BLDC motor from an SX3?
It is rated at 3600 RPM but there are a few running them at higher rpm's through belt pulley set-ups, other than that the only suggestion I could make is a 1hp 3ph set-up, or a set-up like Post 130, but that one could get pricey! unless you could make a score on ebay
Any way I have the motor and controller for sale fairly cheap. PM me if you are interested.