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Sapim Race Spokes Polyax Nipples

Old 01-14-18, 10:38 AM
  #1  
touringiscool
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Sapim Race Spokes Polyax Nipples

Dear Forum

I am trying to build a Rohloff wheel into a Ryde Andra Rim rim. While doing this the Sapim Race spoke and Polyax Nipple broke in half at 130KgF is this a common occurrence or a rare failure and if so what failed? I oiled the threads and the seats of the nipples and spokes. The nipples would jump and crack as I tightened them.

Now I am going to try again with new spokes from Rohloff but this time grease the nipple seat with multipurpose grease.
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Old 01-14-18, 11:12 AM
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130 might be a little on the high side, but I'll leave that discussion to the philosophers, for the time being.

No, a spoke shouldn't break like that under normal building (and 130 kgf/cm is not unusual on some wheels), unless something else was wrong. It's possible that the spokes you have are threaded too short, and the nipple bottomed out before allowing you to reach tension on the spoke--this would cause binding, and eventually, you might turn the flats off the nipple with your wrench, as you see in your picture.

FWIW, Sapim Race/Polyax nipples are a fine combination, and I've built quite a few wheels with them. Something was wrong in your build process somewhere, be it the materials or the measurements...
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Old 01-14-18, 12:39 PM
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The spoke didn't bottom out. I question the quality of the nipples since these were bought on Ebay and there is no makers mark on the nipples. Picture one shows the left over spoke coming through the broken nipple. Picture two shows the two variations of nipples that I have been sent from Ebay, the nipple on the right has a radius edge and the nipple on the left a filleted edge, I do not know which are genuine nipples.
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Old 01-14-18, 05:38 PM
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If a (new) black spoke wrench fits the nipple, it's not a Sapim. Their nipples ate turned with a 3.3mm minimum (or Park green) wrench.

The one on the left is from Sapim--the right hand one is definitely not.
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Old 01-14-18, 06:07 PM
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Originally Posted by wschruba View Post
If a (new) black spoke wrench fits the nipple, it's not a Sapim. Their nipples ate turned with a 3.3mm minimum (or Park green) wrench.

The one on the left is from Sapim--the right hand one is definitely not.
Sapim is my nipple of choice and I build with them all the time. I have a couple of thousand of them right here on the table, and a brand new black park wrench fits them perfectly.
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Old 01-14-18, 09:11 PM
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Originally Posted by touringiscool View Post
Dear Forum

I am trying to build a Rohloff wheel into a Ryde Andra Rim rim. While doing this the Sapim Race spoke and Polyax Nipple broke in half at 130KgF is this a common occurrence or a rare failure and if so what failed? I oiled the threads and the seats of the nipples and spokes. The nipples would jump and crack as I tightened them.

Now I am going to try again with new spokes from Rohloff but this time grease the nipple seat with multipurpose grease.
Not something I've ever experienced during a build. Even bottoming the threads in the nipple and forcing them beyond shouldn't do that. Odd that both spoke and nipple failed.
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Old 01-14-18, 09:14 PM
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Originally Posted by Dan Burkhart View Post
Sapim is my nipple of choice and I build with them all the time. I have a couple of thousand of them right here on the table, and a brand new black park wrench fits them perfectly.
Didn't Sapim have a bad run of spokes not too long ago? Maybe they've had a bad run of nips.
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Old 01-15-18, 06:52 AM
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Originally Posted by Marcus_Ti View Post
Didn't Sapim have a bad run of spokes not too long ago? Maybe they've had a bad run of nips.
I've been using a lot of CX Rays, Sapim Race and Leader spokes, and don't know anything about a bad run. I did open one bag of CX Rays that had several that had escaped the threading procedure, but that's easily fixed.
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Old 01-15-18, 08:14 PM
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I suspect counterfeit products.
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Old 01-17-18, 11:17 AM
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It was my fault I used the wrong spoke wrench 3.45 of stead of 3.3 this caused it to shear the head off
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Old 01-17-18, 02:41 PM
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Originally Posted by touringiscool View Post
It was my fault I used the wrong spoke wrench 3.45 of stead of 3.3 this caused it to shear the head off
Although I might be wrong....
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Old 01-19-18, 09:03 AM
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Broke two more nipples. In the end I decided it was the Ryde Andra 40 rim. As you can see from the picture the nipples are binding in the nipple (note the metal swarf) which would mean its a fault with the drilling of the rim. i.e. the holes in the rim are too deep for the nipples.
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