Originally Posted by
Dirtdrop
I've heard of force fitting a British threaded cartridge bottom bracket ...
That works only with a Swiss-threaded bottom bracket, unless you can cross-thread a LH 24TPI cup into a RH 1mm BB shell. (The dual RH thread cup approach outlined above should work, as well.) If you use aluminum cups, there is virtually no danger of damaging your steel BB shell. For almost 10 years my PKN-10 has had an English-threaded Sugino fixed cup and a French-threaded adjustable cup.
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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