bb size once cottered crank is gone?
02-17-06, 05:45 PM
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bb size once cottered crank is gone?
now that the spring bike show is quickly approaching i need a shopping list. i've decided to convert my '78 sekine into a ss/fixie, hopefully with flip/flop rear hub @ 126mm/700c. but once i actually remove the cottered crank, what size bottom bracket is required for replacement? i know most of the tech info about bikes but cranks/bb is my weaker link 
thanks for any ideas. i will start a project thread i guess once i collect the parts etc... (here are some file fotos not taken with this thread in mind) i guess that square taper is the probable goal here. might be able take new pics if required
thanks for any ideas. i will start a project thread i guess once i collect the parts etc... (here are some file fotos not taken with this thread in mind) i guess that square taper is the probable goal here. might be able take new pics if required
02-17-06, 07:33 PM
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feros ferio
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For your project, you can use any English/ISO bottom bracket designed for a single or a double chainring. In the latter case, you will want to mount the chainring in the inner, rather than the outer, position on the spider.
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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
"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
02-17-06, 08:23 PM
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Peugot
If an english bottom bracket is indeed a fit, I would be interested in your old cottered crank bottom bracket for a very old school fixie project of my own. You can see the frame at
https://cgi.ebay.com/ws/eBayISAPI.dll...MEWN%3AIT&rd=1
Assuming it gets here from australia, I hope to fit it with a single chainwheel cottered crankset, and flip flop wheels with 65" and 55" gears. You bottom bracket could help.
I wish you luck with your project.
Paul
If an english bottom bracket is indeed a fit, I would be interested in your old cottered crank bottom bracket for a very old school fixie project of my own. You can see the frame at
https://cgi.ebay.com/ws/eBayISAPI.dll...MEWN%3AIT&rd=1
Assuming it gets here from australia, I hope to fit it with a single chainwheel cottered crankset, and flip flop wheels with 65" and 55" gears. You bottom bracket could help.
I wish you luck with your project.
Paul
02-17-06, 09:30 PM
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SKS: does your interest mean i can't just cut right thru the axle to remove this thing? this mucker is stuck, & i have stopped currently trying to remove that sucker. but i havent quit yet. but if the pin is too fussy, i might just cut away with some modern destruction in mind...
John E: it did look to see if a quick swap would move the chain line inwards, but even on the inside the current setup won't work. does that mean i can 'dish' the axle out for a friendlier position? i did consider this cottered crankset just to save $ but the vintage value isn't there. SKS, you can't be serious to need this crap, can you?
John E: it did look to see if a quick swap would move the chain line inwards, but even on the inside the current setup won't work. does that mean i can 'dish' the axle out for a friendlier position? i did consider this cottered crankset just to save $ but the vintage value isn't there. SKS, you can't be serious to need this crap, can you?
Last edited by CdnPeugeot; 02-17-06 at 09:51 PM.
