Senior Member
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,778
Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record
Mentioned: 77 Post(s)
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To the OP: I'm pretty sure your chain is too short. Your rd is at its extension limit with the chain on the middle ring in front and the big cog in back. If you were to leave the chain where it is in back and shift onto the big ring in front, you'd bust something.
A lot of people are convinced that they're never going to use the big-big gear combination. I used to think that myself. But I was disabused. As Aesop supposedly said, "Experience is a dear school, but the fool will learn in no other."
That said, nice score! The SLJ derailleurs are about the best that Simplex ever made, I think.
Last edited by jonwvara; 11-05-20 at 04:23 PM.
Reason: I am an editor