Old 07-26-12 | 04:51 PM
  #8  
FBinNY
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From: New Rochelle, NY

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

Originally Posted by brian669
....

i measured the outer already and it's 130. BUT... the inner is marked 110bcd 34t. I have never seen this, I've never heard of it, i dont know how it could be possible, and I have seen several similar cranks on eBay marked this same way. so I was hoping maybe somebody else had this same issue.

at this point I'm assuming it's mislabeled.


Why are you concerned with the markings. You have both rings and the crank.

Put one ring on top of the other and see if the bolt holes line up or not, then count teeth.

You can also see how they mount and measure the crank BCD point to point, and use Sheldon Browns to convert that to BCD. (link sent earlier).

So you don't have to assume or guess whether the chainring is mis-marked, if the marking doesn't match what it actually is then it is. For all we know they mis-marked a bunch, but decided to use them on OEM cranksets because it wouldn't matter.
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