Broken spoke nipples

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  • I recently rebuild my rear wheel, new cartridge bearings on Formula hubs, DT spokes and new new CXP22 rim. Up to now I have broken twice the aluminium DT spoke nipples. Shall I replace them with brass ones any other suggestion on how to make a stronger wheel?

  • Yes, replace them all.
    (fattie)

  • Spokes might be too short. With alu in particular the end of the spoke needs to go past the shoulder of the nipple. Flush with the top of the spoke would be good.

    Have you a way of measuring tension, just to be sure you haven't put too much in?

    If you're new to wheelbuilding, my understanding is that alu nipps are not for novices. Definitely consider brass.

  • After I broke the spoke nipple I had to ride about 10 miles back home and the wheel is slightly not true. Will the other spokes be OK if I only replace the damaged spoke? Also can I replace it with a plain (non double butted) spoke or will affect the wheel build balance?

    thanks!

  • After I broke the spoke nipple I had to ride about 10 miles back home and the wheel is slightly not true. Will the other spokes be OK if I only replace the damaged spoke? Also can I replace it with a plain (non double butted) spoke or will affect the wheel build balance?

    thanks!

    Spokes are very tough things. You can re-use them for multiple wheelbuilds with no problems.

  • Yep, reuse the spokes and replace the nipples with brass ones.

    I find the spokes come up great if you put them in the dishwasher for a couple of cycles, just remember to lube the threads before you build.

    Allister

  • ally is a crap material* for a nipple.

    *it verges on the almost OK with American Classic ally nips which avoid using the material in tension i.e. there is no thread below the level of the rim in the nipple.

  • I think this thread has answered my question - in attempting to true a front wheel last night (an old Bontrager Race Disc tubeless 26" 28h), with a correctly-fitting spoke key, I squished/mashed/shredded about three nipples, exposing a lot of thread on the spokes in question. The nipples look corroded and therefore weak - I'm going to replace all of them but the tubeless rubber strip/bed was pretty tough to get out! I use a tube anyway, but it's a good smooth surface which doesn't need rim tape.

  • As already said alloy nipples break mainly if the spokes are too short. The spoke needs to come up to the top of the nipple or slightly above. Sapim nipple freeze or the DT equivalent is essential too spoke stop or slow corrosion.

  • As already said alloy nipples break mainly if the spokes are too short. The spoke needs to come up to the top of the nipple or slightly above. Sapim nipple freeze or the DT equivalent is essential too spoke stop or slow corrosion.

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Broken spoke nipples

Posted by Avatar for Stefano @Stefano

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