I had a Nadax BB in my 1980 Tom Ritchey. As I recall it was designed with a soft aluminum body. The threads in the frame's BB shell cut threads in the Nadax BB as it was installed. It looked like it had a lockring on each side, but one side was attached to the BB itself. You used a lockring tool to install it. The other side was essentially a big nut that threaded on to lock the BB in place. It gave me years of trouble-free service
Best regards, Marcus Helman Royal Oak, MI
Lou Deeter wrote [and I snipped] "Finally, there is an ad for a sealed bearing bottom bracket called Nadax, by Specialized. I don't recall ever seeing one before."
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