126mm rear 32 hole Dura Ace 7400 hub for 6 or 7 speed freewheel, Clydesdale approved?
11-23-14, 12:28 PM
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126mm rear 32 hole Dura Ace 7400 hub for 6 or 7 speed freewheel, Clydesdale approved?
I have a set of 1980's Dura Ace 7400 hubs, mine take a freewheel. SEE: VeloBase.com - Component: Shimano FH-7400, Dura-Ace 7400 (freewheel). Can these support a heavier, 220 lb rider?
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Last edited by Barrettscv; 11-23-14 at 01:01 PM.
11-23-14, 12:50 PM
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Still learning
11-23-14, 01:13 PM
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Rider technique, not bad. Roads: mostly bad.
I'm using a 126mm Campagnolo high flange Record hub without problems, so far.
I should just lose 20 lbs
I'm using a 126mm Campagnolo high flange Record hub without problems, so far.
I should just lose 20 lbs
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When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.
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Last edited by Barrettscv; 11-23-14 at 01:16 PM.
11-23-14, 03:09 PM
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Better design for higher loading.
11-23-14, 03:13 PM
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I think you'll be fine; the keys will be quality of the rim, spokes, and the wheel build.
11-23-14, 03:17 PM
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Some folks swapped out steel axles for Ti axles on those rears. Be sure yours is steel, and I think you'll be fine.
The Ti were nice, but even over-tightening the QR caused problems on some of them.
As for the weight, remember, Your weight does not sit on the axle, it hangs from the top of the rim.
Properly trued and tensioned, the thing to remember is spoke count and strength, and uniform tension.
The Ti were nice, but even over-tightening the QR caused problems on some of them.
As for the weight, remember, Your weight does not sit on the axle, it hangs from the top of the rim.
Properly trued and tensioned, the thing to remember is spoke count and strength, and uniform tension.
11-23-14, 04:18 PM
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11-23-14, 04:25 PM
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If you haven't trashed your Campy wheel, the D-A wheel should be fine---if built/tenstioned/stress-relieved/etc/etc properly.
That said, freehubs are a stronger, more durable design, especially with less-than-stellar builds. Aftermarket sales of rear axles plummeted after Shimano freehubs took over the market.
That said, freehubs are a stronger, more durable design, especially with less-than-stellar builds. Aftermarket sales of rear axles plummeted after Shimano freehubs took over the market.
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11-23-14, 04:39 PM
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If I lost 20 pounds, we'd be even. 
You're close to the limit. As others said, a cassette hub would nearly eliminate the chance of a broken axle. If the Record is OK, the Dura-Ace hub will be OK.
You're close to the limit. As others said, a cassette hub would nearly eliminate the chance of a broken axle. If the Record is OK, the Dura-Ace hub will be OK.
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11-23-14, 07:43 PM
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By the 1980's, Dura Ace stuff was top notch stuff, comparable to Campagnolo Record. You should be fine. Some people bent or broke axles, but even that is not a disaster.
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11-23-14, 10:22 PM
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What's the worst that happens? You bend an axle five years down the road?
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11-23-14, 11:49 PM
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The DA 7400 hub is excellent. I have three wheelsets that use them. I think it should serve you fine at your weight provided the wheel is well built.
11-25-14, 02:11 PM
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Until the universe implodes. So there.
I'm a "Pollyanna"! I think my weight will drop to the acceptable level mere minutes before the wheel reaches the catastrophic failure point. Until then, I'm pretty sure it will work well. But if it does fail, I'll definitely post the results to you all from the hospital.
11-25-14, 02:31 PM
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Skinny guys bend freewheel axles, too. Does this bike absolutely need to have a freewheel (like for a concours show or l'Eroica)? Perhaps Dave Mayer's trick of using a special cone on the DS may help if so -- I'm interested in hearing more experiences with that. 
11-25-14, 02:34 PM
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I'm probably going to use 130mm Shimano 600 hubs on this build.
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When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.
When I ride my bike I feel free and happy and strong. I'm liberated from the usual nonsense of day to day life. Solid, dependable, silent, my bike is my horse, my fighter jet, my island, my friend. Together we will conquer that hill and thereafter the world.
Last edited by Barrettscv; 11-25-14 at 03:27 PM.
11-25-14, 03:24 PM
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I agree with those that say you should be fine. In the Clydesdale forum I have read of some hwo ride fewer than 32 spokes.
But just to echo what others have said, it depends on how you ride. I used to break and bend solid rear axles pretty frequently back in the freewheel days (the 70's when I weighed 170 or less)... I haven't bent or broken any rear axles in the cassette era even though I have weighed up to 360 pounds. Part of the difference is the bearing placement in the hub systems, and part is that I used to ride my bike on trails I wouldn't ride on today. I was mountain biking before there was such a thing as a mountain bike. I broke frames, axles and other components much more frequently when I weighed about half as much.
But just to echo what others have said, it depends on how you ride. I used to break and bend solid rear axles pretty frequently back in the freewheel days (the 70's when I weighed 170 or less)... I haven't bent or broken any rear axles in the cassette era even though I have weighed up to 360 pounds. Part of the difference is the bearing placement in the hub systems, and part is that I used to ride my bike on trails I wouldn't ride on today. I was mountain biking before there was such a thing as a mountain bike. I broke frames, axles and other components much more frequently when I weighed about half as much.
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11-25-14, 09:58 PM
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Well, unfortunately, the worse thing that can happen is the axle bends, unnoticed, then the rear dropout cracks. Rear dropout replacement, or frame replacement if the frame isn't economically worth repairing.
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11-26-14, 11:22 AM
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incazzare.
Say what? Can you elaborate? That makes no sense to me.
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