>
> Folks, it seems that something needs clarifying here. 531 DB tubing was
> available in Imperial and Metric diameters. This is why a standard-gauge
> French 531 DB frame takes a 26.6 diameter seat post, whereas an English
> one requires a 27.2 post. The wall thicknesses are the same, but the O.D.
> of the tube is 0.6 mm different (28.0 vs 28.6).
Question: What sort of 531 takes a 26.4mm post? I've got apparently Frenc h made 531 Bartali frame with a 26.4 and this seems by no means an uncommon
post diameter for French 531 bikes. Kurt Sperry Bellingham WA
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