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Hairline cracks in the RIM near nipple. Should I replace it?

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Hairline cracks in the RIM near nipple. Should I replace it?

Old 07-13-15, 01:01 AM
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Hairline cracks in the RIM near nipple. Should I replace it?

Today I removed my cassette/chain for a clean up and noticed that on my rear wheel there are multiple (4-5) hairline crackes come from where the nipple is. Is it normal and nothing to worry about or should I replace the rim?

For the record it's the CXP22 rim that came on my 2010 Specialize Secteur Elite.
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Old 07-13-15, 01:24 AM
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yeah the rim is done for
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Old 07-13-15, 01:32 AM
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Pictures or didn't happen

and to a lesser extent:
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Old 07-13-15, 02:12 AM
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Wouldn't call that a hairline crack, that a big crack for a rim!
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Old 07-13-15, 02:17 AM
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I've had that happen on eyeletted Mavics, which I rode for a frw seasons. My point being, I don't think catastrophic failure is imminent, and that while they should be replaced, you don't need to avoid riding them in fear of failure. I don't know odds, though, just my experience.
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Old 07-13-15, 02:26 AM
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Looking at the crack, I had a DT rim where all the eyelets/went like the crack on the centerline, I replaced the rim, but guess I had been riding with it for quite a while before I noticed the cracks,

With this one, would be more concerned about the ones running to the side, as from the images, these look bigger than the centerline cracks and could propagate more.
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Old 07-13-15, 03:39 AM
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Originally Posted by HazeT
Today I removed my cassette/chain for a clean up and noticed that on my rear wheel there are multiple (4-5) hairline crackes come from where the nipple is. Is it normal and nothing to worry about or should I replace the rim?

For the record it's the CXP22 rim that came on my 2010 Specialize Secteur Elite.
Congrats! You got yourself a trainer wheel!
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Old 07-13-15, 03:51 AM
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replace it. You would not want it failing catastrophically while bombing down a hill at 30 mph. As Ice says - it is still useable for a trainer wheel because on the trainer it is not supporting your weight.
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Old 07-13-15, 07:06 AM
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Originally Posted by bgrider
replace it. You would not want it failing catastrophically while bombing down a hill at 30 mph. As Ice says - it is still useable for a trainer wheel because on the trainer it is not supporting your weight.
I agree it is useful as a training wheel, but on many trainers it does support your weight. There is often no pressure clamp, just the rider's weight pressing the wheel against the spindle. Even on a trainer with a clamp, the clamp force is usually similar to the rider's weight. The reason it is useful as a training wheel is that no much can happen if it fails.
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Old 07-13-15, 07:15 AM
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Originally Posted by Ice41000
Congrats! You got yourself a trainer wheel!
This^^^

The good thing about riding a bike on a trainer is that you can open the rear brake so an out of true wheel won't rub. That wheel will work for a time on a trainer until it doesn't and you will know when that happens because spokes start flapping around.
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Old 07-13-15, 08:54 AM
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Thanks y'all. I guess I need a new rim, by unanimous decision.
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Old 07-13-15, 09:32 AM
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Originally Posted by chaadster
I've had that happen on eyeletted Mavics, which I rode for a frw seasons. My point being, I don't think catastrophic failure is imminent, and that while they should be replaced, you don't need to avoid riding them in fear of failure. I don't know odds, though, just my experience.
I agree you're unlikely to have a catastrophic failure in the sense tha the wheel is going to collapse. However, you are running a risk that 2 or more spoke pull through on the same ride (i.e. hitting a decent pothole) and you could be walking home.
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Old 07-13-15, 10:21 AM
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Originally Posted by HazeT
Thanks y'all. I guess I need a new rim, by unanimous decision.
Turn that frown upside down! Now you can replace those heavy-ass mavics with something nicer!
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Old 07-13-15, 10:23 AM
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Originally Posted by merlinextraligh
I agree you're unlikely to have a catastrophic failure in the sense tha the wheel is going to collapse. However, you are running a risk that 2 or more spoke pull through on the same ride (i.e. hitting a decent pothole) and you could be walking home.
I've never seen a wheel collapse because of cracking at the nipples, they just become un-rideable because they won't stay true.
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Old 07-13-15, 10:27 AM
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Originally Posted by TrojanHorse
Turn that frown upside down! Now you can replace those heavy-ass mavics with something nicer!
^That^

Mavvic CXP22 rims are pretty much as cheap in quality as cheap wheels/rims get.
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Old 07-13-15, 10:31 AM
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I'd replace the wheel...not the rim. But no huge hurry if it's still true.
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Old 07-13-15, 11:02 AM
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Originally Posted by BoSoxYacht
I've never seen a wheel collapse because of cracking at the nipples, they just become un-rideable because they won't stay true.
pretty much this. had a set of neuvations that did the same thing, and only had to replace them because they wouldn't stay true but they never hinted at failure
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Old 07-13-15, 12:50 PM
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Originally Posted by redlude97
pretty much this. had a set of neuvations that did the same thing, and only had to replace them because they wouldn't stay true but they never hinted at failure
^^^^Same
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Old 07-13-15, 01:13 PM
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Originally Posted by BoSoxYacht
I've never seen a wheel collapse because of cracking at the nipples, they just become un-rideable because they won't stay true.
When I said you could be walking home, I meant that you could get to the point its too untrue to clear the frame, losing several spokes at once.
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Old 07-13-15, 01:43 PM
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Originally Posted by merlinextraligh
When I said you could be walking home, I meant that you could get to the point its too untrue to clear the frame, losing several spokes at once.
My post was just showing that I agreed with you.
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Old 07-13-15, 01:57 PM
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Originally Posted by dtrain
I'd replace the wheel...not the rim. But no huge hurry if it's still true.
why would he lie?
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Old 07-13-15, 02:03 PM
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Originally Posted by bt
why would he lie?
Ba Dum...
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Old 07-13-15, 02:07 PM
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Old 07-13-15, 02:51 PM
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The only time I've had spokes pull through a rim was some old sewups... I had my bike under my roommate's bed at a co-op (unlocked?) And one day I came to get the bike and a half dozen spokes were pulled through and the bike was unridable. I never knew exactly whether it was just a fluke, or someone had bumped it, or if the bike had been stolen, trashed, and carefully put back.

If it was me, I'd probably plan on replacing the rim sooner rather than later. If you can find a matching rim, you could just transfer your spokes from one rim to the next.

However, it may depend on how you ride, and how catastrophic a failure might be.

Most of my riding is around town... but it is not uncommon for my rides to extend about 20 miles across town... that could make for a long walk home. Heading into the woods with a Cross bike would be a bust too

However, if most of your rides are within 5 miles of home, then one might be tempted to just keep on riding.

I accidentally bought a rim with one spoke pulled through, otherwise it looks OK. I'm still pondering whether it can be repaired. Perhaps redrilled.
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Old 07-13-15, 03:16 PM
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Originally Posted by TrojanHorse
Turn that frown upside down! Now you can replace those heavy-ass mavics with something nicer!
I'm replacing it with another pair of as heavy wheels... Axis 2.0, a Friend just bought a new bike and took them out before he even hopped on the bike so he is going to sell me the set for $75.
I figured my Alu secteur isn't worth the investment, I'm better just saving for when I want to upgrade the whole bike.
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