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Thanks... emailed Clever Mike’s but no reply. I wondered if enquiries like that got filed under “HELL NO!” because of liability.
It’s the Diablo stx, so down tube and top tube are Ti, the rear triangle is steel.
Cheers!
vilms5000-
You need to work out what size post should be in it and get one.
Reaming should (as I now understand it) be used to return the id of the seat tube to round after brazing/welding. Ie, to remove slight distortions, not to increase the id.
I'd be starting by having a look down inside the tube to judge the condition of the metal. If it seems like a 27.2 is close then it might be 27.2 just with some rust on the inside of the tube. You can make a good tool for cleaning up the inside with a mudguard stay or wire coat hanger and some emery/sand paper strip or wire wool or scotch pad.
https://www.youtube.com/watch?v=xRIFqasCOSg
If the top of the tube is in good nick then maybe find a shop with a set of gauges
M_V
I’d take it to sbc cycles / seabass / your lbs of choice. If they can’t do it then next choice is finding a machinist shop or something.
Dynatech as in the bonded lugged frameset? What are the 3 main tubes made out of?