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Technical & Reference Section => Tech and Restoration => Topic started by: lcfc on February 05, 2008, 03:35 PM
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Is the left side thread different size to what others are??
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Don't think so....but it goes the other way ???
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mmm.... i know it goes on arse backards but i cant seem to get owt to fit it, chain wheel side is fine and def. takagi as it has the little nick on the O/D of the B/B??
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a 24tpi BB set will fit.
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you mean 28tpi??
difference between the two sizes is that there are more threads on the 28 than the 24, this would also mean that the threads are closer together - yes?
The ones i have been trying are 24tpi and have just noticed that the threads on the crank are visably tighter than on the left side b/b.
It has to be 28tpi - would it make sense the fact that it is off a Ammaco mongoose wire wheel?
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you're right there are 24 or 28 threads per inch, which would mean the 28 has the threads tighter together. generally the 24tpi fits one piece crank and 28tpi fits spindles like the redline dimple. my takagi mx one piece cranks take a 24tpi BB, one side has a larger diameter, which would be the lock race for the chainwheel side.
to answer your mongoose question, i'm not 100% sure but they did use a 28tpi BB and yours is probably one of them. they are pretty inexpensive and easy to find, for example i bought a 28tpi for my loose ball redline cranks. it was a Tioga BB-220.
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cheers dude, i think that clears that one up. Top man.