Peeped this over at Fixed Gear Leeds.
“just knocked this up to help anyone out who needs to find out the bcd of any obscure/unknown chainset. Should work out exactly A4 but I’ve included a scale to double check. Hope someone finds this useful!” I sure will.
To use it just enlarge the image by clicking on it with your mouse then hit print. It should then print out perfectly on a sheet of A4.
Thanks Sam, good job.
Tags: bcd, chainring, crank, measurement, pcd
May 29, 2009 at 7:37 am |
A simpler way exists. Simply use a ruler to measure the distance between two adjacent bolts, and then correlate that distance to this chart: http://www.sheldonbrown.com/cribsheet-bcd.html