Originally Posted by unworthy1
Uh...no. I think you need to re-read Sheldon Brown: French adjustable cups (with lockrings) will be RH threading and none of those will ever fit in the LH threaded fixed side of a Swiss BB.
That's a great big 10-4, good buddy!
In the bad old days, all bicycle bottom brackets used RH threads on both sides. In response to fixed cups working their way loose, a Brit. filed a European patent for left-threading the fixed cup, and the English/ISO threading spec. was born. Not wanting to pay patent royalties and/or not wanting to invest in anticlockwise taps and dies, the French and Italians stubbornly clung to RH threading on both sides. The Swiss came up with the best system, with a self-tightening (left-threaded) fixed cup, but millimeter-pitch metric threading. If English threading had not been so pervasive, Swiss would have ended up being the official ISO standard in an almost-Metric world.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069