Clydesdales/Athenas (200+ lb / 91+ kg) - Black spokes break more?

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View Full Version : Black spokes break more?


JusticeZero
07-29-11, 07:21 PM
I had to replace three spokes in my back wheel today. As he was fixing them, the mechanic noted that the black painted spokes seemed to break a lot easier than the unpainted metal ones.

Oh dear! How bad does this sound for my wheel?


Street Pedaler
07-29-11, 07:55 PM
I'd have to say that, if there's a connection, it's with the gauge or quality of the black spokes. I can't see where the color itself would have anything to do with it.

nfmisso
07-29-11, 08:27 PM
spokes are NOT painted black, they are plated. Plating is an electro-chemical process that actually micro pits the surface of the spoke as the layer of black zinc or black nickel is deposited. This does weaken the critical outside surface of the spoke. Spoke breaks start with a crack at the surface, and progresses through until it fails.


JusticeZero
07-29-11, 10:00 PM
So: Clydes should get chromey bright rims then?

10 Wheels
07-29-11, 10:05 PM
True for me.

Street Pedaler
07-30-11, 03:11 AM
Hmm. Learn something every day. Good info.

motobecane69
07-30-11, 06:09 AM
black spokes on all my wheels, no issues. may be true but if the wheel is built right, and you don't ride like a maniac you won't have problems

nfmisso
07-30-11, 06:46 AM
So: Clydes should get chromey bright rims then?

don't go with chrome or zinc plated spokes (UCP, etc); go with a top quality unplated spoke like Wheelsmith, DT Swiss, etc.

Street Pedaler
07-30-11, 12:27 PM
Third paragraph. http://wheelbuilder.blogspot.com/2006/08/spokey-dokey-then.html

nfmisso
08-01-11, 02:21 AM
Third paragraph. http://wheelbuilder.blogspot.com/2006/08/spokey-dokey-then.html
Your quoting an Analyst on an Engineering issue???? At least get a plating expert or material scientist. Please feel to research me on LinkedIn, the US Patents listing, or anywhere else.

Street Pedaler
08-01-11, 02:55 AM
I think that, based on everything I've read, it comes down to quality of spoke as well as other factors. I haven't come across anything definitively proving that a black spoke is any more prone to breakage than any other color, all else being equal. Not all black spokes are "Plated", some are simply painted. In my own experience, the only problem I've ever had with a black spoke breaking was determined to be caused by a defective spoke. YMMV.

IAmCosmo
08-01-11, 09:24 AM
I've broken more silver spokes than black ones. In fact, I've never broken a black one, only silver ones.