I'm sure it'll be a race for all of us to point you to Sheldons
excellent resource for these diameters.... here it is, and it looks
like... 26.4 !
http://sheldonbrown.com/
rich pinder van nuys, CA
gabriel l romeu wrote:
> Anybody have any idea of the proper diameter seatpost for an early
> 70's nervex lugged px10? I get a multitude of measurements from 26mm
> to 26.75mm using my digital calipers .
> And, anyone have one a bit long?
> may not have access after friday through wednesday btw...thanks
>
> Bob Hanson wrote:
>> It's not quite so simple, especially if you include metric (French)
>> tubing. Example: for double-butted 531 the French outer tube diameter
>> was 28.0mm versus 28.6, so the same thickness of tubing which
>> would use a 27.2 seatpost for British, etc. frames would use 26.6
>> mm post in French DB531 tubing.