Sorry, I meant all other things being equal. Round tubes address the for ces of bending and torque more efficiently than other shapes. My point about
tube diameter is larger tube diameter makes a stiffer frame but it adds weight, and there is a lower limit of wall thickness.
Jim Merz Big Sur CA
You wrote: "So the stiffness of the final frame depends on wall thickness"
No, not so fast, I think that is far more determined by the main triangle size. And the tube diameter and shape is far more critical. dave frogeye@porterscustom.com
Porter Customs 2909 Arno NE Albuquerque, NM USA 87107 505-352-1378 1954 BN2 1959 AN5 Porter Custom Bicycles
cars:
http://www.britishcarforum.com/
blog: http://porterbikes.com/
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