Its been pretty close to a year since my purchase of a Magic Pie with external controller so a report is in order. First an explanation of the trike the Pie motor is on. It's a homemade Delta trike that is 2wd. A cycle Analyst 3.1 was purchased along with the motor also a 12 magnet PAS for the crankset. I did not want just a throttle. First off I couldn't figure out how to wire it up to get it to work properly so the good folks at Golden Motor asked me to send the components back to them. A short while later it was returned to me and it all worked.
It was end of season here in Winnipeg and the frame was undergoing some extensive mods. I gave it a 1/2" EMT outside framework made to hold a coroplast body. The front and rear have expanded metal to promote airflow. This because previous enclosed builds have been way to hot and were uncomfortable to pedal. The rear wheels are 26" and the front is 24". Pedal power is routed to the left rear wheel vis a jackshaft and the right rear is the Magic Pie which is not connected to any chain. It spins via signals from the PAS and/or the twist throttle. Electric power is provided by 2 17.5AH 48 volt batteries. I can run one or both using a dual battery device bought online. I thought due to the rolling resistance of 3 tires and the weight of the trike it would be a real power hog but so far thats not the case.
Using the Cycle Analyst power is set to level 2 which works out to 221 watts. This provides enough speed and fairly good range. Speed runs around 17 to 24 kph and on battery number 1 so far it's logged 55 km's starting at 54.6 volts and going down to 48.7 so far. That indicates more distance is possible. So far I am loving the Magic Pie motor.