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Old 04-20-05, 12:41 PM   #1
RocketsRedglare
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Why do my spokes keep braking

I'm 6 foot, 200 pounds and ride a low end Specialized Allez. The Bike is a great ride and I put in roughlt 20-30 miles a day.

Over the last two years I've had to replace a broken spoke on muy front wheel about 4 times. I haven't hit any curbs, rocks or other obstructions. The path I ride is well maintained.

About a month ago, I had the entire wheel respoked. The Bike Shop said there was nothing wrong with the rim or hub. Yesterday, as I was riding, very suddenly 4 spokes became loose, throwing the wheel out of true. I tightened the offending spokes to limp home, but about a mile from my destination, the spokes (don't know if they were the same ones) loosened up again, throwing the wheel out of balance.

Any ideas? Should I just get a new wheel?
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Old 04-20-05, 12:47 PM   #2
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You should definately get a new wheel builder.
It sounds like the spokes were never tensioned properly.
Read Sheldon Browns site for reasons why this is critical.

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Old 04-20-05, 01:45 PM   #3
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wow yea it sounds likr tension is off by 100 pounds, sheesh. Either you have some tension balancing issues there or the wheels were of a very low tension to start. Are all of the spokes feeling rather loose? It could be that the low spoke tension is letting spokes nipples loosen.
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Old 04-20-05, 02:03 PM   #4
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Probably because you keep squeezing the "tube levers". - kidding (You spelled it braking- as in stopping, as opposed to "breaking". ) Just having a little fun with typos. I make them all the time.

Seriously, I would have a lbs guy look at the wheel to see what's up with spoke tension.
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Old 04-20-05, 02:09 PM   #5
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Heck if its that bad you can probably feel the tension by hand
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Old 04-20-05, 04:34 PM   #6
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The build was poorly tensioned. A good builder can straighten it up and bring it up to spec.
The old spokes breaking , I think, was due to the wheel company using 15 guage spokes, they do not fit the holes in the hub as well and this can put extra stress on the J-hook. I would also bet they were black spokes, these tend to be a little brittle.
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Old 04-21-05, 06:53 AM   #7
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As everyone else has pointed out, this wheel was not built properly. Find a wheel builder that:
1. Uses a tension meter to build wheels properly
2. Preps their spokes with wheelsmith spoke prep or the equivalent
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Old 04-21-05, 07:25 AM   #8
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In my experience spokes tend to break when the spokes tension becomes too uneven. This happens inevitably with any wheel eventually but the process is accelerated when the wheel wasn´t built well to begin with. It also doesn´t help of course if the wheel is not adjusted after being ridden for a couple of weeks and the spokes are low quality/wrong size.

When the spokes reach very different tensions then some spokes are taking disproportionately more of the strain that they were designed to and will break.
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