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Oh nothing, just riding around on my hubless bicycle.

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Oh nothing, just riding around on my hubless bicycle.

Old 08-15-10, 01:21 PM
  #1  
IbizaBiker
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Oh nothing, just riding around on my hubless bicycle.

Any thoughts on this gizmo?

http://gizmodo.com/5613029/oh-nothin...ubless-bicycle
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Old 08-15-10, 01:38 PM
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Is there a performance benefit? Seems like it would add weight and bearing-drag (due to higher bearing-velocity and contact-area).
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Old 08-15-10, 02:59 PM
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If it's a demonstration project for something that might have practical applications elsewhere that's fine. But as a bicycle, it's a big step in the wrong direction, with only the most marginal benefits, and many, many drawbacks.

The people who come up with stuff like this have absolutely no sense of the bicycle's history, that their brainchild has been done already, and that current bicycle design is actually highly evolved. The beauty of modern bicycles is how simple they are and how they achieve so much with a minimum of material, or moving parts.

Rather than designing gadgets that solve non-problems, designers should focus their efforts on identifying and addressing real problems.
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Old 08-15-10, 03:05 PM
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Originally Posted by IbizaBiker View Post
I think this version is much more stylish: http://bikerodnkustom4.homestead.com..._horseman.html

I do like the description in step 18:
"ummm yeah, that way the go-roundy s**t doesn't run over the air thingy"

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Old 08-15-10, 03:12 PM
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Originally Posted by FBinNY View Post
.... The beauty of modern bicycles is how simple they are and how they achieve so much with a minimum of material, or moving parts.
....
As we've seen over the years carbon has been able to make inroads in FRAME design even to the point that for whatever reasons the FIM outlawed anything but the standard double triangle bike from competing in the more prestigious events. But other than velodrome and some calm conditions triathalon racing the tried and true spoked wheel is still king for a lot of very good reasons. The key one being FB's reply above that it does so much with so little. This hubless design is just an art exercise until someone can come up with a practical and equally or better perfoming design that does the job with even less material.
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Old 08-15-10, 03:17 PM
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Originally Posted by FBinNY View Post
The people who come up with stuff like this have absolutely no sense of the bicycle's history, that their brainchild has been done already
OOohhh, I remember seeing this one in the Modolo catalogue around 1988. It had hidden hydraulic brakes, very cool!


http://pds.exblog.jp/pds/1/200903%2F...F1430291%2Ejpg

On the motorcycling front, Sbarro made a few hubless motorcycles. The forks were kinda weird though.
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Old 08-15-10, 03:19 PM
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Originally Posted by DannoXYZ View Post
OOohhh, I remember seeing this one in the Modolo catalogue around 1988.


http://pds.exblog.jp/pds/1/200903%2F...F1430291%2Ejpg

It had hidden hydraulic brakes, very cool! On the motorcycling front, Sbarro made a few hubless motorcycles. The forks were kinda weird though.
Yes, but how do they make the go-roundy s**t not run over the air thingy?
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Old 08-15-10, 03:20 PM
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Nice Danno. But I wonder what happens when it hits the first pothole....
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Old 08-15-10, 03:21 PM
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This thread is so last Friday.
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Originally Posted by bragi "However, it's never a good idea to overgeneralize."
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Old 08-15-10, 07:59 PM
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Originally Posted by BCRider View Post
Nice Danno. But I wonder what happens when it hits the first pothole....
Heh, heh.. seems a little flimsy. Would make for an interesting FEA exercise in materials selection. Rims would have to be something with high stiffness to weight/size ratios... like beryllium. Ring-shaped hub could be MMC with CF and boron embedded in an aluminium binder. Even then, that may still be pushing it.
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