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So like regenerative breaking for e-bikes? Except that such a thing already exists.

Does he have a fundme or patreon page? I think it's worth supporting his research if it can be applied to cars and trains one day.

If somebody is an airplane engineer, is it possible to do something like that with planes? It would be great if planes could become environmentally friendly with such technologies.

I am not well versed in modern electric bikes. Do they offer regenerative braking yet?

A mechanical engineering student that doesn't know the law of energy conservation?

Unironically, I would enjoy a bike that I could pedal at a constant speed, charging the battery all the while. Give me a display that indicates my pedaling speed so that I can tailor my exercise and you’ve created a moving stationary bike. I hate having to stop at lights and whatnot, so a rotation-based stabilizer would be nice at speeds below 10 km/h as I pedal the equivalent of 30.

Really, it’s just unfortunate that the engineering doesn't work out for momentum->chemical energy unless you’re biking at a professional level and willing to cruise slowly or charging the battery at home. Bleh

At this point just cut the middle man and have battery 1 directly charge battery 2, then reverse it when it's done. Same results with way less hassle

Unrelated, but the pedaling cadence people have on ebikes bothers me. I'm always seeing folks in a high gear slowly pedaling. I'm like dude you're sacrificing watts! Pedal faster on a lower gear, you'll use the same energy but go faster.

You could harvest energy from going down hills and braking, but that’s probably not work the weight.

🤦‍♂️

There was this browser game (on the BBC website IIRC) with a Wallace and Gromit theme, in which you build stuff.
It had a level in which you make a vehicle-ish contraption and see how far it goes ^[or more like whatever contraption you can make to get the dummy to go as far as possible. Could even be a cannon, launching the dummy.]. I managed to setup a motor and generator in such a way that it effectively increased the vehicle's range by quite a bit.
I don't remember well enough now, but I think the generator didn't give as much resistance as the energy it was creating.

I cannot facepalm any harder. Dude that's some 8yr old question shit

Yes, many electric bicycles power themselves while going down hills or costing. As for the other idea that you could recharge them just by pedaling ... That exists already. Almost nobody wants it because it's easier to plug your bicycle in. The point of the electric bicycle is to do less work, not to do more. Otherwise you would get a regular bicycle because it weighs less.

I mean... regenerative braking is a thing.

My hybrid Prius C had this, and yes, you actually can build up some useful amount of charge from just rolling down a decently large or long hill, and you can also run the car on pure EV mode, though you're probably not gonna top 20 mph on a flat road.

Obviously this does not create an over unity situation or perpetual motion machine, but, if this guy can figure out a way to put a regenerative braking type device onto an E-Bike, or maybe motorcycle/moped, in a way that isn't stupid expensive...

That could increase overall range, and I think it would be neat.

Though I... don't really know why you wouldn't just use one battery for the whole system, just have a modulation/regulation system for it.