Re: [CR]Re: Campagnolo SR 39T chainring?

(Example: Events:Cirque du Cyclisme:2002)

From: <Bikerdaver@aol.com>
Date: Sun, 24 Oct 2004 16:29:02 EDT
Subject: Re: [CR]Re: Campagnolo SR 39T chainring?
To: BobHoveyGa@aol.com, classicrendezvous@bikelist.org


In a message dated 10/24/2004 1:04:45 PM PST, BobHoveyGa@aol.com writes:

Since photos don't lie, I downloaded the pic and brought it into Photoshop. Using the measure tool, I got the distance between teeth (which should be 1/2" in real life), both at the top and bottom of the ring, and then averaged the two (to compensate for perspective distortion). I then did the same thing for the distance between bolt holes and calculated the actual distance using the tooth pitch as a reference. The result was 76.77mm, not the 86.4 the seller claims. This translates to a BCD of 130mm. I remeasured every which way to see if I could massage the figures to come out to 135 BCD, but no way... so I'm doubtful this is even a Campy ring. Bob Hovey Columbus, GA ------------------------------------------------------------------------- Kudos to Bob. I had been watching this enigma unfold, secretly hoping the seller might be right. Bob, you are a freaking genius. Thanks for putting this conundrum to rest. Like I said, I was secretly wishing the seller might just be right as I always like to be surprised by oddiities. Thanks again bob,
cheers-
Dave Anderson
Cut Bank MT