Bicycle Mechanics - What do these #'s mean?

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w98seeng
06-06-08, 11:35 AM
I have a Stronglight (I think) BB and I want to know what the #'s on the axle mean.
http://i23.photobucket.com/albums/b390/w98seeng/Picture009.jpg
The 18 I believe means that it is 118mm, but what does the 7 mean?

On the other side there is a stylized "S" and a "C". Does the "S" stand for Stronglight? What does the "C" mean?
http://i23.photobucket.com/albums/b390/w98seeng/Picture0091.jpg

Thanks for the info

Ian

DMF
06-06-08, 12:08 PM
Most manufacturers mark the date of manufacture and source (e.g. foundry). A few publish the codes.

Do you want to know something about the part, or are you just curious?
w98seeng
06-06-08, 01:01 PM
Do you want to know something about the part, or are you just curious?

I ordered a new Campy BB (And Campy Crank) and would like to sell this one when the new one arrives. I want to know the model, if possible, so I can post it with the right information.

DMF
06-07-08, 03:20 PM
http://sheldonbrown.com/images/spindle.jpg

Quote D, B, and A and C if they're different (asymmetrical). Quote the taper if you know it. http://sheldonbrown.com/bbsize.html
w98seeng
06-08-08, 08:24 AM
Thanks DMF
Ex Pres
06-08-08, 06:54 PM
Sheldon also says


"7" series spindles fit "oversized" 73 mm ISO/British bottom brackets,
Jeff Wills
06-08-08, 09:59 PM
Sheldon also says

That only applies to SR/Sugino BB spindles. The OP has a Stronglight.

I agree with DMF: if you're selling it, list all the dimensions. Parts from that era were not particularly standardized- you're better off describing it.