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don;t worry about it. The white powder is just the oxydation of the magnesium. My old DyMags did the same thing. Kept doing so until I refinished them.

A few years back I was (and still am) putting my Darmah back together. I noted that there were hairline cracks on all the "spokes" at the join to the rim. I could never trust it after that , I don't know that it was terminal but it made quite a nice bonfire. There was no white powder or any other indication of the fault. I was just prepping the wheels for a touch of paint, the rear seemed ok. I'll never know if the wheel was ok and regret destroying it, maybe todays technology would have enabled testing and repair...................

BevHevSteve wrote:don;t worry about it. The white powder is just the oxydation of the magnesium. My old DyMags did the same thing. Kept doing so until I refinished them.

Does anyone make replacement look-alike Campagnolo decals for the wheels?

pjti wrote:A few years back I was (and still am) putting my Darmah back together. I noted that there were hairline cracks on all the "spokes" at the join to the rim. I could never trust it after that , I don't know that it was terminal but it made quite a nice bonfire. There was no white powder or any other indication of the fault. I was just prepping the wheels for a touch of paint, the rear seemed ok. I'll never know if the wheel was ok and regret destroying it, maybe todays technology would have enabled testing and repair...................

The question I would ask would be, were these actual cracks in the metal, or just cracks in the paint? Pity you blew them up. :-(

http://www.jandjracingltd.com/Castingrepairs.htm

http://www.thomasnet.com/nsearch.html?c ... plisting=3

Some castings can be repaired. I guess I would check before destroy.