GGoodrum
1 MW
I have a Cyclone 1000W setup, which uses a separate chain drive for the motor, using a 2nd chainring and a crank-mounted freewheel. This works fine, but because this setup uses standard #40 1/2" chain, it is noisy as all getout. Part of this might be because the freewheel used is of questionable quality. So far it has held together, though. Anyway the setup works well, and it is great being able to take advantage of the extra gearing provided by the Nexus 3-speed hub. This configuration runs on a 48V/13.8Ah 16s6p a123-based pack, and a 55A controller. It peaks out at about 2650W. Because of the extra gearing, this configuration has more low-end torque than the 72V/60A 5303 setup it replaced, with the same top-end speed. It is a lot less weight as well.
An RC-based setup would weigh even less, which is why I'm standing in line for a couple of Matt's new "eDrives", but rather than messing around with the cranks, like Mitch I plan on doing the "series drive" option. With two freewheels on the output shaft, one for the sprocket driven from the crankset, and one for the motor side, you can still pedal without any extra drag, I think.
-- Gary
An RC-based setup would weigh even less, which is why I'm standing in line for a couple of Matt's new "eDrives", but rather than messing around with the cranks, like Mitch I plan on doing the "series drive" option. With two freewheels on the output shaft, one for the sprocket driven from the crankset, and one for the motor side, you can still pedal without any extra drag, I think.
-- Gary