E-bike battery charging while riding

[Voltron]

P.S. I know what you mean about the heavy ass single speed direct drive no electricity blues.

But the solution isn't an extra motor, it's regening the one already there, more batteries for the same weight as an extra motor, and maybe a no front derailleur two speed that you flip the chain to the onto the smaller ring with your hand for limping home on when all else fails

 

[liveforphysics]

When you have a single hubmotor on a normal ebike, you also are spinning a generator as you power the motor.

If you add another motor to the front and connect it to Regen you, for every 100watts it outputs back to your battery the rear motor drew ~130-140watts from the battery.

You can add infinity extra motors and have infinity extra drag and extra weight and extra losses, but still no amount gives you even an infinitesimal amount of net gained energy.

 

[rg12]

Thanks guys, will keep the free electricity idea for my hamster...
Meanwhile, will add soon the regen button and see how it feels slowing with magnet power

 

[dogman dan]

Regen just for braking IS ok. But I found regen charging horribly inefficient. If you don't have a stop sign at the bottom of a hill, I could coast much farter than I could ride on the regen energy I had gathered.

If you do have a stop at the bottom of the hill though, may as well gather even a small amount of power with regen braking. 8) Gotta stop anyway, or should.

 

[rg12]

I intend to use it only when I want to slow down/stop so it will give me a bit of juice and save some brakes (not that I ever run out of brakes like I may in a car).