I don't like to disagree too greatly with my colleague experts However, if I read Sheldon correctly he suggests that before Campy Road was 144 and not 151. Jump on me if I'm wrong. Well: In 1966 I was the coach and manager of the American World's team in Germany. Track at the Frankfurt Velodrome, Road on the Nuerburg Grand Prix course. The Campagnolo Tech Support was most generous and provided for FREE all of our team members' bicycles with the NEW, JUST OUT 144 bolt pattern cranksets, 42x54 chainring and NEW FRONT AND REAR DERAILLEURS!!. The Campy Boys put them on and adjusted the complete bikes. It helps to have friends in high places. My PERSONAL RICKERT road bike that I brought back after racing in Europe had 151 cranks, it was a '59 vintage and I used that set up until I retired the bike in the early '80's Chuck's timeline is not quite correct either, he says '68, I believe or '67 but I know what I know, been there,done that, rode that, and brought back brand new samples IN THE BOX that our club South Bay Wheelmen showed at our annual awards banquet in the fall of 1966 with the 144 new bolt pattern. I'm still riding my 151 and block chain on my old Rickert track machine. Any other Q's? Ted Ernst Palos Verdes Estates, Ca
> John Thompson wrote:
>>
>> >> 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.
>>
>>Ok. But what then is the difference between a road ring and a pista ring
>> when both are intended to use 3/32" chain? Why not just use regular
>>road rings for both road and pursuit purposes? That would help inventory
>>issues if nothing else.
>
> Are you sure they're the same BCD? Up until about 1967, Campagnolo used
> the 151 mm BCD for track stuff, 144 mm for road...Zeus stuff was generally
> the "poor man's Campagnolo" using similar designs and specs...
>
> Sheldon "Not A Zeus Fan" Brown
> +-------------------------------------------+
> | I millihelen = the amount of |
> | beauty required to launch one ship. |
> | --Peter Shickele |
> +-------------------------------------------+
> --
> Harris Cyclery, West Newton, Massachusetts
> Phone 617-244-9772 FAX 617-244-1041
> http://harriscyclery.com
> Hard-to-find parts shipped Worldwide
> http://captainbike.com
> Useful articles about bicycles and cycling
> http://sheldonbrown.com