CDI Italian bike
04-07-13, 12:53 PM
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CDI Italian bike
Got a bike marked "CDI". Its a steel Italian bike with Campy engraved on the cable guides....no other markings. Now the issue. It did not come with a bottom bracket and I have no idea how to measure or order a new one. Also I have the components for Shimano 600 to put on it. Little help please!!!!!
04-07-13, 01:00 PM
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20:1 it's an Italian 36x24 BB. You can measure with 98% assurance of knowing by measuring the width. 70mm would (most likely) be Italian, 68 (most likely) would be BSC (1.370x24).
Measuring width isn't 100% reliable because there are always exceptions, so you can gain assurance by measuring the ID of the thread. If you come up with something close to just under 1-3/8" (or 35mm) it's Italian. If it's about 1mm under 1-3/8" or nearer to 34mm, then it's British.
Another way, if you have good eyes is to look at the thread direction of the right side. (crank side) Italian will have a right thread, BSC will be left hand threaded.
some combination of the 3 three methods will give you 100% assurance of what you need.
Measuring width isn't 100% reliable because there are always exceptions, so you can gain assurance by measuring the ID of the thread. If you come up with something close to just under 1-3/8" (or 35mm) it's Italian. If it's about 1mm under 1-3/8" or nearer to 34mm, then it's British.
Another way, if you have good eyes is to look at the thread direction of the right side. (crank side) Italian will have a right thread, BSC will be left hand threaded.
some combination of the 3 three methods will give you 100% assurance of what you need.
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FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
04-07-13, 02:14 PM
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Thanks so much! Looks like an inexpensive buy! I was stripping the bike of pain (really no salvaging the look) anyway I did find a serial number "M5744" got any thoughts?
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