Not to hijack the thread, but does anyone have a picture of the dropout drilling? My early '80s or so Mondonico has 1010 dropouts with one small (too small for fender bolts) hole in the drive side part. I've always wondered it this for a Porta Catena.
This thread constrains the date of my Mondo to not earlier than 1978, so thanks!
Ken Freeman Ann Arbor, MI USA
-----Original Message----- From: classicrendezvous-bounces@bikelist.org [mailto:classicrendezvous-bounces@bikelist.org] On Behalf Of John Betmanis Sent: Saturday, December 08, 2007 6:13 PM To: Classic Rendezvous Subject: Re: [CR]Campy Porta Catena (sp?) dropout useful for dating frame?
At 03:00 PM 08/12/2007 -0700, Doug Van Cleve wrote:
>Does the presence of a right dropout with the threaded holes for the
>Porta Catena device narrow down the range of when a frame was most
>likely made?
All depends how large a stock of dropouts the builder kept on hand and how stock was rotated. The right dropout on my '82 Nishiki Ultimate is threaded. According to the timeline, this feature appeared in 1978, but I don't know how long it lasted.
John Betmanis
Woodstock, Ontario
Canada