Thanks for the comments guys.
Diceman- the muffler system is super quiet, i can put a hand over the outlet and the tone barely changes, I think the sound actually comes off the motor itself- ringing out of the block and head.
Silverbear,I don't know about Canada, but when the new legislation gets signed by our beleaguered governor, it would be legal because the law doesn't exclude gas generation.
Details- yes, it will motivate on battery power for a bit but I think cruise rpm will need to be raised to send more juice into the batteries- they are not lively after a run. I need to rev the gas engine for hills and acceleration.
This alternator has no regulation, it is from an 86 mustang with an external regulator that is not used on the bike, however an older Delco can be modded by wiring out the regulator and works just as well. This engine is about tapped out at 36 or 37 volts driving with a one to one ratio ( probably spinning around 3 grand).
A bigger engine could use less rpm but with a bigger drive pulley and do your needed voltage too.
Electronics (not my favorite thing) - TNC scooter supplied the 500 w controller and throttle. batteries are fed up to 35 volts, (limited by the throttle stop on the HF) (depending on gas throttle setting)- I try to dial back on the throttle at cruise speed to around 28 or 29 volts so I don't burn up anything.
Accelerating or hills suck up power, so even at full rpm, the volts stay just over 26 then.
I do help the e-motor by pedaling usually. I go about 2x as fast as my normal pedal bike and still get some exercise, besides, it LOOKS like I am on a bike as I pedal.
Back when I was experimenting, I wanted to not use a controller at all and just modulate e-motor via engine rpm but I could not find a means to charge the needed 12 v battery which sends juice to the field circuit ( the voltage would go up to 50+ and I could not find a regulator which would do it), so I abandoned that mode.
This bike's batteries are wired in series to give 24v but I was able to tap off one battery to send 12 volts to the alternator field. Same with the lights and horn.
I did try a 24v regulator inside a Delco 10SI, had it wired wrong and burned it up while testing voltage and rpm, it did propel me down the road prior to wrecking it- so I know a 24 volt regulated Delco works.
The alternator output (unbeknown to me) must be directly connected to a battery (or batteries) or it will apparently self- destruct the internal regulator, I sent for another, I think I wrecked that one connecting the wrong wire, sent for another -bench tested it first and the reg. was a dud.
At that point, I thought, dump the regulator altogether and limit volts with the engine rpm like before- only use the controller and it works.
I think you may get torque steer if you motorize an offset rear wheel, might mot be much though. Lots of room in a sidecar though.
If gas engines were legal here I would dump this e-stuff in a heartbeart- this whole deal is a "Mother of necessity" creation, but I do like to tinker, so I do not mind. The set-up is NOT efficient though, the gas engine seems to be carrying a load most of the time -a pure gas set-up would probably get 3x the mileage. We do what we have to. I can live with it.
If there is anything else you are curious about let me know.