BB Size on Stratos?
11-23-20, 11:32 PM
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BB Size on Stratos?
I'm currently putting together an '89 Rocky Mountain Stratos, and am trying to figure out the axle length on the BB. Anyone have any ideas?
11-24-20, 03:20 AM
#2
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Determined by the crank you use.
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11-24-20, 09:00 AM
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11-24-20, 12:16 PM
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Things are measured in METRIC, so you have a nominal 68mm wide BB.
This shows a 122.5mm BB.
https://www.sheldonbrown.com/bbsize.html#shimano
This shows a 122.5mm BB.
https://www.sheldonbrown.com/bbsize.html#shimano
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11-24-20, 03:28 PM
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11-26-20, 01:41 PM
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You need some calipers that get down below the slit in the tube if it has one or at least an inch down.
Usually if you do a google search for the make and model of the frame you can find some specs that might tell you. I even sometimes find it in the catalogs for that year bike in the specs section. But admittedly that is rare.
If you have a crop of spares of different sizes, then what fits best?
