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See at 4:16 how the rim is way out of round?
That's a problem. The brakes won't even work safely. By the time they get something that isn't a liability nightmare, it's going to weigh a ton.
(Rogue Sausage, Fri 27 Nov 2015, 14:43, Share, Reply)

I was just thinking, 'What if you hit a pothole on that?'
And how does the inner channel of the rim (the bit the motor touches) stay clear of water/dirt? I hate to be negative on new ideas and obviously earnest inventors, but this is a solution in search of a non-existent problem. We already have motorised bicycles for people who want them.
(Zachariah Pardon, pardon. J'AI UNE POUSSETTE, Fri 27 Nov 2015, 15:12, Share, Reply)

I'd want it to use regenerative braking as well
The other issue with the design is the unsprung weight. Despite the show-off wheelie-ing the bike, the battery and the motor gubbins are going to be much heavier than a normal wheel, so it will be a bastard to ride on a bumpy surface.
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Snappyuk gets BIGGER with free sample., Fri 27 Nov 2015, 17:10, Share, Reply)

And at 3:21 you can see an inner tube valve sticking out
...but you don't see it later when the wheel spins round.
And at 3:57 it seems to shift forward when riding it.
Hmmmmm!
I wonder which parts of this vid are actually authentic.
(WinnieTheTurd, Fri 27 Nov 2015, 17:28, Share, Reply)