this post was submitted on 13 Jun 2024
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[–] [email protected] 9 points 10 months ago

The wheels are apparently really really loud when they are mounted like this. You just can make good enough ball bearings of this size at any reasonable cost and weight

[–] [email protected] 8 points 10 months ago (3 children)

Is this an AI bicycle or a Dyson bicycle?

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[–] [email protected] 7 points 10 months ago

You could also cover the spokes or use a spokeless single wall design. I do think a design like this would need to be cleaned a lot.

[–] [email protected] 7 points 10 months ago* (last edited 10 months ago)

Ok, maybe with a magnetic linear drive?

[–] [email protected] 6 points 10 months ago (1 children)

Is there any regime where this is more efficient than spokes? I'd imagine that at high speed there's an aerodynamic advantage (possibly similar to a track/TT disk wheel?), but I can't imagine the bearings being better than current bikes. But bearing loss might (???) just scale linear with speed, so probably a win from aero in the end. But this isn't counting weight, which I imagine is worse (but doesn't matter much at high speed on flat ground).

[–] [email protected] 5 points 10 months ago

The complexity of this design cannot be outspoken.

[–] [email protected] 5 points 10 months ago

Needs blue or orange neon lights

[–] [email protected] 5 points 10 months ago (1 children)

People who buy these things deserve poverty.

[–] [email protected] 6 points 10 months ago (1 children)

I thought it looked neat.

:-|

[–] [email protected] 4 points 10 months ago

They totally look neat, but functionally, they would suck as bicycles (at least with current technology)

[–] [email protected] 4 points 10 months ago

I don't think this will work on the long run.

First, the hold on the rim must be very tight and precise or the wheel will wobble like mad.

Second, such a tight hold will be very sensitive to any kind of dirt, so it has to be sealed.

Any seal tight enough to keep extremely small dirt out will cause loads of friction.

Tight seals in general is not an option, they exist en masse with e.g. hydraulic cylinders. But for them, the friction is basically a non-issue in comparison to the overall power budget. But I cannot imagine an even halfway free wheeling wheel that will not break down after getting in contact with a bit of sand.

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