When the battery runs out, you pull over and "pedal" to recharge the battery, then you're good to go again!
this post was submitted on 16 Oct 2025
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now that is genius!
I don't own one of these, but that sounds actually useful if for example I'm about to climb a big hill and want to pedal at a less strenuous pace (but for more time) than would be needed to overcome the slope.
Assisted modes already exist, and regenerative braking already exist
But do e-bikes have regenerative braking? I haven't seen that. I've been thinking that it would just be too heavy and clunky to be worth it.
Too heavy? You just run the motor in reverse which turns it into a generator and adds friction to do generative braking. There really isn't any added weight.
Bikes normally have freehubs, a ratchet on the cassette (sprockets) of the rear wheel, when you stop pedalling the bike freewheels, without that the pedals would keep turning.
This makes driving a motor from the wheel impossible without heavily modifying the normal bike mechanics. That's why regenerative braking on e bikes is rare.
mechanical engineering student
Did not pay much attention in high school
Look out for v2.0 which also features a sail on the front which you blow to go faster.
Okay, but blowing on a sail to go faster is actually a thing. Mythbusters even stated that they did their experiment in the worst method (i.e., not using modern designs and methods), and still found that a fan on a sail could make it move. It's not free energy, but let's not ignore how cool sails are.
This sounded very wrong to me, so I googled and apparently they had a setup where the reflected air from the sail caused a net flow in the opposite direction allowing them to move forwards. But that is less effective than just blowing the air straight backwards without a sail.
Look for the sail car video from Veritasium. With a chain drive you can out run the wind using the principles of sail propulsion.
Nice to get a moment to pull out a classic
honestly this probably works to some degree, just that you'll move at walking speed relative to the ground if you go up to the edge of space
As someone who sucks at physics, I'm convinced that Trollface has proposed so many solutions around the internet to provide free energy, but the capitalists are conspiring to sabotage him, just as they did to N.Tesla.
The other one being to shine a light on a solar panel. For bonus points you include a mirror and a vampire.
I have never seen the Arabic language translation of this meme but I immediately understood it from having seen the English version.
Someone has been spending too much time on ChatGPT.
A mechanical engineering student that doesn't know the law of energy conservation?
Techbros rediscovering old principles, a tale as old as....well, since the tech industry.
This is satire… right? I hope it is
Yet another "engineering student" who hasn't learned his Newtonian physics yet. Which I'm pretty sure is covered in grade school, but you never know.
I'd go with second law of thermodynamics, but whatever.
LinkedIn has been shit posting goldmine lately.
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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.
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.
Regen braking exists, and everyone does want it, because it gives free power when you hit the brakes. The reason nobody adds it is because up until recently, you could only have coasting or regen braking, and not having to pedal literally all the time is just far more important for bikes. There's a recent tech, freegen? Called something like that, it lets you have both regen braking and coasting,
Why not cut out the middle man and directly charge battery 2 with battery 1? Switch and repeat.
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 have a better one: charge from temperature gradients as it moves through new areas.
WOOOOOOOOOOOOOOOOOOOOOOOO!
Aw man, Lemmy finally got a LinkedInLunatics instance? How long has this been here? That was like the last thread I've been hanging onto with reddit. Finally, this place feels like a genuine alternative 🎉
Welcome to the fediverse's LinkedInLunatics, my friend!
I had this exact idea... when I was 7. That was before I was introduced to newtonian physics.
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