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Old 10-04-09, 07:15 PM   #1
Force 
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Is there a method to seatpost size madness?

Is there a rule of thumb for determining seatpost diameter for frames based on vintage, country of origin, etc? I've seen frames of similar vintage (mid 80s) with different seatpost diameters. Basso - 27.2; Merckx - 27.0; Pinarello - 27.0. I was trying to determine seatpost size for a Torpado frame that is probably of a similar vintage, but the 27.0 seemed too big. Are there any rules that make determining seatpost diameter for frames easier?

Thanks in advance.
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Old 10-04-09, 08:16 PM   #2
Ex Pres
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If you know the tubing that can help, but even that's not a guarantee. There's always Sheldon's database, if yours happens to be on the list.
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