Edumacator
Join Date: Jan 2018
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Bikes: '87 Crestdale, '87 Basso Gap, '92 Rossin Performance EL-OS, 1990 VanTuyl, 1980s Losa, 1985 Trek 670, 1982 AD SLE, 1987 PX10, etc...
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Originally Posted by
JohnDThompson
Not necessarily. Shell width is unreliable in predicting thread spec. The shell could have been overzealously faced, or started out BSA, got damaged/stripped, and was reamed and re-tapped Italian. I assume that the OP determined it was Italian by threading an Italian thread cup into the shell, or measured the inside diameter of the threads as 36mm rather than BSA 35mm.
I thought about reaming after I posted...
Which begs the question, can Campy Italian cups (36X24) be used with an BSA 68mm spindle?
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1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super