At 03:06 PM 1/11/07 -0500, Emanuel Lowi wrote:
>Is there some simple way to determine from seat post size
>(26.8, 27.0, 27.2, etc.) what gauge of classic standard
>diameter butted tubing (531, SL, etc.) was used for a
>bike's seat tube?
If you measure the OD of the seat tube below the seat lug, subtract the diameter of the seatpost and divide by 2, you should have the tube wall thickness plus the paint thickness. I just don't know exactly what typical paint thickness would be and I'm not about to scrape some off to find out.
John Betmanis
Woodstock, Ontario
Canada