28 vs. 32 spoke rideability after broken spoke?
11-30-10, 04:59 PM
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28 vs. 32 spoke rideability after broken spoke?
Any experience riding 28 hole front wheels with a broken spoke and modern dual pivot brakes?
This morning I found out that I can ride 32 spoke Open Pro front wheels with a broken spoke and no rub after I opened my quick release (Campagnolo, so braking was unaffected and I didn't even need to take my hand off the brake hood).
Clearance opposite the broken spoke after the fact was .060"/1.5mm (a penny fits) at the rear of the brake pad and a little less up front.
I'm wondering if I'd have had the same experience with a 28 hole front that came from a questionable builder.
This morning I found out that I can ride 32 spoke Open Pro front wheels with a broken spoke and no rub after I opened my quick release (Campagnolo, so braking was unaffected and I didn't even need to take my hand off the brake hood).
Clearance opposite the broken spoke after the fact was .060"/1.5mm (a penny fits) at the rear of the brake pad and a little less up front.
I'm wondering if I'd have had the same experience with a 28 hole front that came from a questionable builder.
11-30-10, 05:09 PM
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Broke a spoke on the cheap 24 spoke wheel on the rear of my fully loaded commuter and rode several miles before noticing a small amount of brake rub. Opened the QR and rode the rest of the way home without issue. Probably had about the same deflection as you experienced.
11-30-10, 05:13 PM
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DE, The fewer the spokes the greater the percentage a broken spoke will effect a wheel. The difference between 28-1 and 32-1 isn't that great so a pair of equally built wheels just favor the 32H rim just slightly to stay truer.
Brad
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11-30-10, 05:31 PM
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Several years ago I rode the Hotter'n Hell Hundred (100 miles) on a 14 spoke Cosmic Carbone rear with a broken eyelet. One spoke was completely loose. With the Dura-Ace brake caliper open there was no rub. These wheels have a heavy aluminum box section rim with bonded CF fairings.
How straight the wheel stays with a broken or loose spoke depends on the rim as much as the number of spokes. Mostly I ride 32 spokes in the rear and 28 in the front with a light rim. I weight 162 - 165 pounds.
How straight the wheel stays with a broken or loose spoke depends on the rim as much as the number of spokes. Mostly I ride 32 spokes in the rear and 28 in the front with a light rim. I weight 162 - 165 pounds.
11-30-10, 11:28 PM
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It really depends on the rim. Most modern rims are somewhat heavier and more rigid than their counterparts from 20 years ago. many of these rims are designed for fewer spokes and are therefore are made rigid enough for the longer spoke to spoke span.
With more rigid rims, the loss of a single spoke is far less critical than it might be with lighter rim.
With more rigid rims, the loss of a single spoke is far less critical than it might be with lighter rim.
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12-01-10, 01:55 AM
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It really depends on the rim. Most modern rims are somewhat heavier and more rigid than their counterparts from 20 years ago. many of these rims are designed for fewer spokes and are therefore are made rigid enough for the longer spoke to spoke span.
With more rigid rims, the loss of a single spoke is far less critical than it might be with lighter rim.
With more rigid rims, the loss of a single spoke is far less critical than it might be with lighter rim.
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