Old 01-05-14, 06:50 PM
  #40  
FBinNY 
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Join Date: Apr 2009
Location: New Rochelle, NY
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Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

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Usually there's a clear wear line at the ball track before the case flakes or collapses. Not seeing that, my gut instinct is that i was a crappy cone with a very thin hardened skin, and zero core support below.

If you want, you can mail it to me, an I'll do a hardness test both on n undamaged area of skin, and then grind off a bit to test the core.

One way to tell the difference (by wear) between too tight and too loose, is the position of th ball track, but I suspect thes are too fargone for that. However tight cones wear exactly at the same ball track of perfectly adjusted cones, while cones run loose will have a wear track at a smaller diameter. Sometines the cups also give some clues.
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