Sheldon’s kludges for derailerless bikes
01-21-23, 04:34 PM
#26
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Structural steel beam to column connection works the same way. The bolt only is in shear when first connected. Afterwords it’s tightened and the bolt and nut is basically a spring with the friction between I beam web and column clip preventing movement.
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02-07-23, 12:47 AM
#27
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Yes it will slip and not only that, but your chain will also stretch and become longer and make it impossible to get a proper tension, there just isn't enough room for adjustment. A quick release skewer is also not designed to support the weigh of the bike and the rider.
No problems yet…
02-09-23, 07:17 PM
#28
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I've wondered why my SS bikes don't have a QR on the front wheel.
It would make it so much easier to quickly remove the wheel and put the bike into my car's hatchback. I might have to look into it......
It would make it so much easier to quickly remove the wheel and put the bike into my car's hatchback. I might have to look into it......
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02-12-23, 11:23 AM
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04-03-23, 08:50 AM
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04-03-23, 12:06 PM
#32
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I went back and looked at my mileage log - just on my Mercian, I've logged 7,254 miles using either vintage Campagnolo or M.M. Atom steel quick release skewers with zero problems, over a 16 year period. That doesn't count the miles on my original Raleigh Competition fixed-gear, the early Trek 620, the Peugeot PR-10L or the Falcon San Remo fixed-gear before that - figure another 3k miles or so.
Internal cam q/r skewers are very strong - there's a reason early Campagnolo track hubs used them, and there's a reason their long-handled brethren used for Cambio Corsa and Paris-Roubaix derailleurs worked. I would be interested in finding out if there were ever any actual documented cases of a track rider's q/r being opened by another ride on the track. I'm betting there weren't.
Internal cam q/r skewers are very strong - there's a reason early Campagnolo track hubs used them, and there's a reason their long-handled brethren used for Cambio Corsa and Paris-Roubaix derailleurs worked. I would be interested in finding out if there were ever any actual documented cases of a track rider's q/r being opened by another ride on the track. I'm betting there weren't.
04-03-23, 02:38 PM
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I always use road wheels as fronts on my fix gears. (All my riding is road.) The nutted pista front hubs that come in the sets I sometimes have to buy to get that rear sit in a box unused. QRs are simply a better system (with steel skewers and internal cams). I use nutted rear fix gear hubs because all my fix gears have horizontal dropouts and nuts make dialing in the chain slack easy even when I am entirely stupid ... or weak or clumsy. ("Walking" the hub, one nut at a time, will always get you to the correct slack and centered tire.)
04-13-23, 01:52 PM
#34
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Well.... the Cambio Corsa dropouts had a rack of teeth to engage the teeth on the hub axle. Not a good example.
Regardless, it is excessively challenging to refute real data that support the axle/skewer as a non-weight bearing entity. The axle helps position the hub in the DO and the springs support keeping the skewer "open" on both sides when installing the wheel. What is required to keep the DO/axle nut interface from experiencing slippage is the force of the skewer/nut on the other side of the DO. the best solution is a nut or an internal cam skewer, high mechanical advantage equals greater force.
Regardless, it is excessively challenging to refute real data that support the axle/skewer as a non-weight bearing entity. The axle helps position the hub in the DO and the springs support keeping the skewer "open" on both sides when installing the wheel. What is required to keep the DO/axle nut interface from experiencing slippage is the force of the skewer/nut on the other side of the DO. the best solution is a nut or an internal cam skewer, high mechanical advantage equals greater force.
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Bikes don't stand alone. They are two tired.
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