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

(Example: Component Manufacturers:Campagnolo)

From: <>
Date: Sun, 24 Oct 2004 16:08:26 EDT
Subject: Re: [CR]Re: Campagnolo SR 39T chainring?

In a message dated 10/24/2004 4:04:45 PM Eastern Daylight Time, 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. >>

Ah ha! Science brought to bear! I Love It! Thanks Bob!

Dale Brown
Greensboro, NC