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front wheel = noisefest.

Old 07-31-06, 07:45 PM
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front wheel = noisefest.

Got a new set 'o IRO / Deep Vs (ooh, how 2004, I know!) and although spoke tension all around feels fine and even, I get an intermittent "ping" noise when I stand up and yank hard on the bars-- seemingly at the apex of lateral stress. Left / right produces the same noise! Pretty sure the noise isn't coming from my headset / bars / axle / etc due to the pitch-- sounds like a plucked spoke.

Short of having a pro give his / her opinion, what might it be?

And no, I still haven't brought my wheels in for their post-break-in retensioning. But like I said, everything at least feels okay.
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Old 07-31-06, 07:50 PM
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Loose cones?
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Old 07-31-06, 07:52 PM
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I will run to the backyard and check!
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Old 07-31-06, 08:02 PM
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If not cones, I'd guess spoke tension. I know you think it feels fine, but I had the same situation a while back on a different wheelset: strange crunchy noises from the rear, took it into the shop, and a few bucks later it was solid again.
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Old 07-31-06, 08:06 PM
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cones seem to have a little play. I've been meaning to buy some cone wrenches anyhow...looks like now would be a good time!
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Old 07-31-06, 08:56 PM
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if it sounds like a pluckd spoke, it probably is the spokes...
since it's a new wheelset, i'd guess they weren't completely stress relieved before you got them on your bike

see sheldon @ https://sheldonbrown.com/wheelbuild.html -->

"Before a wheel is ready for the road it must be stress relieved, because the bend in the spoke has to accommodate itself to the shape of the hub flange and vice versa, and a similar process may go on where the nipple sits in the rim. Some wheelbuilders do this by flexing the whole wheel, others by grabbing the spokes in groups of 4 and squeezing them together. My preferred technique is to use a lever to bend the spokes around each other where they cross. My favorite lever for this is an old left crank:



This particular technique has the added advantage of bending the spokes neatly around each other at the crossing, so they run straight from the crossing in both directions. As you go around the wheel this way you will probably hear creaks and pinging sounds as the parts come into more intimate terms with each other.
After you do this, you will probably have to do some touch-up truing, then repeat the stressing process until it stops making noise and the wheel stops going out of true."
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Old 07-31-06, 09:16 PM
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i wouldn't exactly describe it as a "ping", but sometimes on my front wheel, the washer on the valve stem comes loose and makes a little bit of noise, so maybe that's worth checking out.
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Old 07-31-06, 09:26 PM
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might be a stress relief issue. these were built by IRO (read: Velocity) in march (or april?) and the pinging has persisted since about a week after they arrived on my Angus.

The front wheel arrived slightly out-of-true (shipping?), so I did a couple minor corrections on it. I guess the noise started shortly thereafter...


Is there a visible difference to the spokes (bend angle?) after they've been stress relieved?
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Old 08-01-06, 06:53 AM
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Originally Posted by slopvehicle
might be a stress relief issue. these were built by IRO (read: Velocity) in march (or april?) and the pinging has persisted since about a week after they arrived on my Angus.

The front wheel arrived slightly out-of-true (shipping?), so I did a couple minor corrections on it. I guess the noise started shortly thereafter...


Is there a visible difference to the spokes (bend angle?) after they've been stress relieved?
There goes thier stellar reputation. Pinging is a sign of a poorly built wheel as is one thats out of true before it's even ridden. Minor truing should not cause pinging. I agree with the assement that they forgot(or never bother) to do any stress relief or didn't tension them properly. Take them to an lbs and have the tension checked.
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Old 08-01-06, 01:11 PM
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Originally Posted by dutret
There goes thier stellar reputation. Pinging is a sign of a poorly built wheel as is one thats out of true before it's even ridden. Minor truing should not cause pinging. I agree with the assement that they forgot(or never bother) to do any stress relief or didn't tension them properly. Take them to an lbs and have the tension checked.
Don't jump the gun there, spanky. Almost every new wheelset will ping a bit as you ride them, unless you're riding something like a ksyrium. Stress relieving them to seat the nipples on the stand is good, but won't always mimic the forces incurred when riding. Also, even the best handbuilt wheels will have a tiny bit of spoke windup, which will make a ping as they return to a neutral position.

If the pinging is bothering you, take the wheel out of the fork and place it flat on the ground or rest the axle on a sturdy bench or tabletop. Grab the rim at the 9 and 3 oclock position and press really damn hard, go ahead and stand on the rim if you want; it's not going to hurt anything. *ping* Rotate the wheel a few degrees so your hands are above a different set of opposing spokes press again *ping*. Work your way around until you've gone around the entire wheel.
Flip the wheel onto the other side and repeat.

It's what I do when I build my own (fantastically true ) wheels, and it's a good idea to do it after any significant truing on an older set.

for the record, customers coming into the shop with a new set of wheels asking for individual spoke tension to be measured with the park or wheelsmith gauge makes mechanics want to shoot themselves in the face
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Old 08-01-06, 01:20 PM
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Originally Posted by AfterThisNap
Don't jump the gun there, spanky. Almost every new wheelset will ping a bit as you ride them, unless you're riding something like a ksyrium. Stress relieving them to seat the nipples on the stand is good, but won't always mimic the forces incurred when riding. Also, even the best handbuilt wheels will have a tiny bit of spoke windup, which will make a ping as they return to a neutral position.
1. they have been pinging for months now. I've never had a good set of wheels ping for more then a block or two.
2. There should be no spoke windup at all unless he has the iro disk hub. I've never had a wheel where the windup led to constant pinging anyway and I would guess that such a wheel would break spokes all the time too.

It sounds like he got a bad wheel. He should complain and get a replacement or they should pay for his lbs to properly tension them.
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