I don't think your legs are strong enough! Let's say your system is 80%Each turn of the pedals would turn the generator about 10 times. Depending on how I gear it. I could get as much as 40 to 1 but fear that pedalling would be much to difficult under any load. 60 pedals per minute is a standard leisurely amount I figure. That would be 600 rpms for the generator. That would add up to 48v at just a leisurely pedalling frequency. So the main question is the load capacity. It is a fairly high wind turbine motor that recommends a 75 amp blocking diode. The diode is supposed to prevent current from backing up into the generator. Would this prevent or at least decrease the load factor? Without the batteries, the speed of the pedalling would determine the speed of the tribe. That would make for a much simpler setup obviously. I've watched videos with this motor and 48v appears to give about 50 mph. Not bad for a leisurely cruise.
efficient, and you only want to get half the power your motor will deliver.
That's 4 hp out, with an input of 5 hp, how long can you put out 5 hp?
The motor is designed to put out 8 hp continuously, (I hope).
You could probably get 12 or 15 hp on a peak demand.
Put in some batteries, then if you want to pedal to supply some
charge to the batteries you can, but it won't be much.
I think it will be a strange sensation to pedal your fastest and not
have the bike speed increase.