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OK, hope this sheds some light:
The cartridge is a Token 111mm English thread. The Bike is a 1989 Peugeot road frame with an English thread BB, I have verified this. The problem is twofold. Firstly when you try to insert the cartridge, the following flanges will not pass any further than the threaded section:
It appears that the diameter of the middle section of the shell is smaller than the threaded section, like this:
And since the flanges are at the same diameter as the threaded section, they will not fit through.
Secondly, when I take off the removable thread and try screwing it into the shell, it goes in almost all the way and then stops about 5mm out. This suggests that the threaded section of the shell is shorter than the threaded sections of the cartridge, so I'd have been 'screwed' even if the thing fitted through. The shell is DEFINITELY english 68mm, and the threads are DEFINITELY sqeaky clean. As I said, the thing screws in beautifully, it just doesn't have enough thread in the shell to take the whole thing.
So basically the token will have to go into something else, that much is sure. But what WILL fit? Any suggestions? Obviosuly an 'old style' bb only requires the axle to pass all the way through, so the clearance inside would not be an issue. And presumably this was the original sort of BB on the original bike.
Sam
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i see. maybe try miche primato, ISO, 107mm (tho i have seen 110's around, but its only 2mm out, not exactly a big issue), shorter threaded section and non buldging middle.
some complain that they unscrew, i followed the instructions (use locktight and a torque wrench) when fitting and have had no problems for over a year.
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Afraid I don't know the model. I think the tubing is Carbolite. It's got quite pretty chrome on the forks and rear stays, but I've been going through the old catalogues and the year is about as much as I can determine.
velo libre. Thanks for the advice. I will look into that.
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• #9
Just get your lbs to cut the threads to enough depth to fit your BB. It's a common enough "problem" that old frames had the BB shell thread cut only to enough depth for contemporary (i.e. loose ball, steel cup) BBs, but getting the threading extended to fit a modern cartridge BB is no problem.
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I've got a Miche on order now. Fingers crossed. I have had a run round the BB shell with some verniers, and it seems that on this particular frame it wouldn't be possible to cut more thread without milling out the hole to the start dimension for cutting the thread. The diameter in the midsection is substantially (maybe 2mm) smaller than in the threaded sections, suggesting they didn't mill out the initial bore for the threads all the way through after casting/welding the shell, but only as deep as they wanted the threads. Having had a look at a zeus book, you would need to bore out the bb shell a little, in the process of which you would probably muck up the threads. Even with the luxury of an onsite workshop at work, I can't really be bothered with the hassle of asking the technicians. Just hope the Miche will fit the bill, looks like it should.
Gav86, hope your Peugeot doesn't give you similar problems... I'll let you know how I get on
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Gav86
chainwhip
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About
Non-Cartridge Bottom Bracket
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So I have tried to fit a cartridge-style bottom bracket into my frame, and the long and short of it is that it won't fit, despite the fact it is the right threading. The cartridge won't go all the way through the BB shell. So I am thinking I need an 'old style' BB with races and cups. This is for a campy chorus crank, so needs to be ISO taper 111mm. Does anyone know where I can get a good quality bottom bracket of this sort on eBay or elsewhere, I wouldn't know what to search for (all the results are cartridge type unsusprisingly.)
Cheers