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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 04-23-08, 02:35 AM   #1
seitenryu
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Two rims + One hub = threesome?

Got this weird idea yesterday that if you had say two 18h rims and one 36h hub you could lace it all up. Are two tires better than one? Another even more useless idea would be to combine two rims of different diameter with a wide fork. Even cooler you could dish them properly and put space between the tires.
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Old 04-23-08, 03:03 AM   #2
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I did once ride a bike that had two rear wheels crammed between the stays and a modified fork to accept two front wheels. It was stupid and fun.

I think your idea is even more stupid but probably also more fun. I say try it and see what happens.
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Old 04-23-08, 03:11 AM   #3
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three rims, one hub. why not
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Old 04-23-08, 04:18 AM   #4
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It would be a bummer if your center tire flatted whild riding
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Old 04-23-08, 04:20 AM   #5
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I wonder if all of the rims need to be dished accordingly or their side-side pressure keeps them true. That was kind of my next thought^ as cargo carrying capacity and traction are the only real uses of the extra rim. Could a 20" rim be built into/onto the same hub as a 700c (1/2 spokes wrap around and into 700c)?

P.S. Who built the bike above?
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Old 04-23-08, 04:39 AM   #6
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It would be a bummer if your center tire flatted whild riding
Why?
I would just ride on. 2 more left, hahahahahaha.
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Old 04-23-08, 04:47 AM   #7
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This is such a funny idea.
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Old 04-23-08, 05:29 AM   #8
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http://www.m-gineering.nl/artic.htm

A Dutch bikebuilder, check the other pages. He's built some crazy ****!
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Old 04-23-08, 06:15 AM   #9
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hmmm....it's three rims, but they're not all attached to the hub. Maybe spoke calculation is too difficult and the truing would be insane.
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Old 04-23-08, 06:28 AM   #10
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2 girls + 1 cup
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Old 04-23-08, 06:36 AM   #11
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2 girls + 1 cup
yeah.....deeeeelish!
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Old 04-23-08, 08:05 AM   #12
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People have done it for snow or sand bikes for a while.
Then Surly came out with the Large Marge rim and the Endomorph 3.7" tire.
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Old 04-23-08, 08:54 AM   #13
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three rims, one hub. why not
I guess that's a cassette and a derailer on the other side? To keep it out of sand and stuff? Pretty cool, never seen anything like that.

Two tires would seems like it would definitely be useful in the snow

But I gotta say, changing the tires or a flat would be a pain in the ass.

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Old 04-23-08, 09:31 AM   #14
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I did once ride a bike that had two rear wheels crammed between the stays and a modified fork to accept two front wheels. It was stupid and fun.

I think your idea is even more stupid but probably also more fun. I say try it and see what happens.
special forces mantra:
"if it's stupid, but it works, it's no longer stupid."
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Old 04-23-08, 09:48 AM   #15
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Wouldn't cornering be strange?
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Old 04-23-08, 10:39 AM   #16
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Wouldn't cornering be strange?
one would think... funny but stupid.

there's a word for three in back... training wheels.
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Old 04-23-08, 11:47 AM   #17
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Old 04-23-08, 11:54 AM   #18
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I watched a guy with a bike like that pull his son in a trailer up Fargo Street (~32% grade) in LA. He had his Jack-shaft or transfer axle on a welded-on rack. With 50 tooth to 10 tooth gears on that shaft he had a 2" low. He built it as a sand bike. He was active in the IHPVA at the time.
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Old 04-24-08, 06:57 AM   #19
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Wouldn't cornering be strange?
I'm thinking this isn't a high speed situation.
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Old 04-24-08, 08:22 AM   #20
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Sneeuwpret!
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