In a message dated 6/22/06 7:44:29 PM, JohnThompson@new.rr.com writes:
>Then I looked in my 60s vintage
>Zeus catalog and found -- sure enough -- that Zeus offered PISTA rings
>for both 1/8" and 3/32" chains way back then!
>How the PISTA ring ended up on a double crank is still a mystery, though.
>
>
Commonly used for pursuits.
Phil Brown
San Rafael, Calif.