Davet writes:
[/QUOTE]An any case, Ti bike tubes are thicker than steel bike tubes to achieve the necessary strength. Ti bikes therefore usually weigh only slightly less than the equivalent steel bikes.
I admit its been a long time. But I thought tubes were made Bigger in Diameter(s) ONLY(Volume=2*pi*(Radii

utside-Radii:inside)squared x length).Thus a small increase in Diameter -both outer and inner dia. delta remaining constant- yields a big increase in strength, with a relatively low volume increase. This would be the better design.
If you meant THICKER meaning (outer Diameter minus Inner Diameter is larger) than I believe you are correct sir!(due to the squared part of the equation) But I did not think that is the case, or at least not an optimum design. BTW- that's why Alum tubes are even bigger in Circumference.
But- I could be wrong.
Eureka! Think I'll go take a bath ( sorry- a little archimedian joke)