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Old 01-12-22, 03:44 PM
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Join Date: Apr 2011
Location: Maryland, USA
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Bikes: Drysdale/Gitane/Zeus/Masi/Falcon/Palo Alto

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Seatpost size concerns

As I was musing in another topic, on my 1974 Zeus track bike project, “My stash of seat posts, one of which was surely on the bike, includes a couple far too small and one so tight it might be wrong too.” Well, sometimes I really hate measuring diameters with a micrometer because I get varying results; that said, the post seems really close to 27.2mm, the seat tube opening I get varying reads of 27.0 to 27.2-ish. The frame is “supposed to be” Reynolds 531, isn’t that always to be 27.2mm? I figure it might be smart to get a “generic” micro-adjusting post instead of a straight post and a clamp, kinda want to get the size correct the first time.
Larry:1958 Drysdale, 1961 Gitane Gran Sport, 1974 Zeus track, 1988 Masi Gran Corsa, 1974 Falcon, 1980 Palo Alto. Susan: 1976 Windsor Profesional.
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