BB-shell on 1930-50's bikes
06-08-16, 10:08 PM
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BB-shell on 1930-50's bikes
I was wondering if there were several standards, or if the common ID of the shell was a single size?
When growing up in the 60's, I often came across bikes with the one-piece "Astabula" beach cruiser cranks, and for bicycles today. Now, there are adapters that allow a modern Shimano cartridge to be threaded into a "large shell" BB from a beach cruiser. I just want to know if the old bikes can use these?
https://www.treefortbikes.com/images/raw/CR0500.jpg
When growing up in the 60's, I often came across bikes with the one-piece "Astabula" beach cruiser cranks, and for bicycles today. Now, there are adapters that allow a modern Shimano cartridge to be threaded into a "large shell" BB from a beach cruiser. I just want to know if the old bikes can use these?
https://www.treefortbikes.com/images/raw/CR0500.jpg
06-08-16, 10:10 PM
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Many will fit but be prepared to file some parts, like the bolts. I also found it tricky to cinch the drive side cup because of a lack of tool access. They do work.
06-09-16, 11:19 PM
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...
...I used one in an older Schwinn Super Sport frame that I wanted to update. There were definitely some fitting issues, and the last time I rode it, I think there was a little click starting from some sort of failure to fully seat the adapter cups. So similar experience...be prepared to do some filing. This reminds me I need to take that one apart and reinstall it.
...I used one in an older Schwinn Super Sport frame that I wanted to update. There were definitely some fitting issues, and the last time I rode it, I think there was a little click starting from some sort of failure to fully seat the adapter cups. So similar experience...be prepared to do some filing. This reminds me I need to take that one apart and reinstall it.
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