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Discussion Starter · #1 ·
I purchased a '85 Bottecchia frameset as a retro reclamation project. Last night as I was putting the finishing touches on the build (Campy and Modolo), I tried unsuccessfully to insert a Thomson 27.2 seatpost into the seat tube. I measured the ID with a pair of calipers and came up with 27.2. I then re-lubed the post and tube, but the post would not insert more than a couple of inches. I also tried a American Classic 27.2 without any luck. Any chance that a Bottecchia owner could provide some insight? Does anyone know if this vintage Bottecchia seat tube is actually 27.0?
 

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Discussion Starter · #3 ·
Thanks Scooper

That article is interesting. My Bottecchia is made from Columbus Aelle, near the bottom of the Columbus hierarchy. I'm guessing that the exact ID varies down the length of the tube. I'll try a 27.0 and see what happens.
 
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