Freegen ebike regenerative braking hub mechatronic discussion

https://www.youtube.com/watch?v=bLu6H-K4L2Y

by banish-m4 • 2 years ago

15 8 2 years ago

Cool idea, I am surprised nobody came up with it sooner.

xhkkffbf• 2 years ago

This is a pretty clever idea and the video does a good job of explaining how it will work. I'm looking forward to these becoming pretty standard on all ebikes.

serf• 2 years ago

I love the concept,but it saddens me that it's going to make hall-sensor/potentiometer brake levers an even more distant concept.

at least this adds a bit more granularity than the lame off/on ebike e-brake switches that are most popular right now -- but it sucks that it's at the loss of pad life rather than just sticking a dirt cheap hall sensor on a lever somewhere and leaving the pads for emergencies.

it is very clever, though.

mitthrowaway2• 2 years ago

Doesn't seem like it would wear the pad very much, with the disc turning so slowly.

esel2k• 2 years ago

Yesterday I was at a Bikeshop and was discouraged to buy a wheel hub motor eBike compared to a bike with these motor next to the crank. Apparently if you change your wheel (i.e. having a flat), you loose your warranty from a supplier(not going to name).

So a big negative for me is the added complexity and dependency on bike shops for simple things as changing wheels.

thingsgg• 2 years ago

A fascinating idea, however it looks like the E-Bike industry has "moved on" to mid-drive motors anyway in recent years, which have the advantage of better weight distribution and being able to more tidily integrate into frames. Mid-drives don't have the missing freewheel problem, but due to this can't have regenerative braking. And I don't know, I think I'd still prefer two redundant mechanical braking systems rather than having the functionality of one being basically completely replaced to act as a fancy sensor for a software controller to know how much regen to apply. It's still great for these concepts being explored, and we're lucky to have a company like Grin Technologies in the aftermarket segment that are actively researching innovative new ideas.

m463• 2 years ago

I think there's room for both.

hub systems are great for lazy riders - they can just go without having to pedal. I think they're cheaper too.

And I suspect mid drive wears your whole drive train out faster. You chain and rear derailleur have to be stronger and get more stress.

ggernov• 2 years ago

Grin Tech is awesome - one of my favorite e-bike companies ever!

Freegen ebike regenerative braking hub mechatronic discussion

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