Nelson,
I am going to take a stab at this and say late 60's. I have one of those TA cranks on my Alex Singer racer. The bottom bracket is a phil wood with a spindle made for that crank. Since Phil opened his shop in 1971, that is my best guess.
Mike Schmidt Stirling, NJ USA
On 4/1/08 9:18 AM, "nelson miller" <nelsmiller@msn.com> wrote:
>
> Group -- I have one of the old TA cranksets that has the strange axle that
> is half round and half right-angle square, with the unique cotters. Does a
> nybody know what dates this would be from? No, I'm not fishing and I don't
> want to sell it... :-) Thanks for your help.
>
> Nelson Miller
> Seattle, WA
> USA