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@TeeTee
I've got a 1950s English road frame and have decided to ditch the cottered cranks I fitted and replace them with some Stronglight 49Ds. I was at first intending to fit some old TA cranks and was told that I would need a 111mm ISO bb to run a fixed hub, so I bought an old 111mm Campagnolo cup and cone bb (Record, I think). As they're very similar, I assumed that the Stronglight cranks would fit with the same length axle as the TA cranks. l fitted the bb, but found that the right Stronglight crank touches and rubs against the fixed cup even without it being tightened onto the axle; also, the chainring bolts stick against the fixed cup so that it cannot turn (it's like the fixed cup has a diameter that is bigger than that of the bolts).
I'm using a 1950s BH Co. Eureka flip-flop hub (I'm not sure what the measurements are right now).
So, is this a problem with the BB - do I need something with a slightly thinner fixed cup? It originally had a 1950s Bayliss Wiley bb and the fixed cup does look to be thinner, and looks to be small enough to fit inside the ring of the crank bolts.
Or, have I made a mistake by assuming that TA and Stronglight cranks both need the same axle length? And, if this is the case, could someone tell me what length axle I ought to get (and, preferably, where I might get one)? I have a 118mm ISO Stronglight axle but fear this might be too long.
Any advice will be gratefully received.
Cheers
TT