In a message dated 12/2/05 1:21:05 PM, heine93@earthlink.net writes:
>After talking with some people offlist, I am having more doubts
>whether these designations are to be taken literally. Certainly, 7/10
>mm in the center of a tube would be quite heavy a gauge for 531, yet
>these frames aren't heavy at all.
That heavy a tube-which, BTW, was the heaviest commercially made 531 tube-would only have been used for the down tube. The rest could have been quite light. I have one bike with a .7/1.0 down tube ant the rest very light and even ar my size it's quite satisfactory. Phil Brown In fact I just got back from a ride on it in San Rafael, Calif.