Re: [CR]28 teeth with Campagnolo Nuovo Record?

(Example: Framebuilding:Technology)

From: <freesound@comcast.net>
To: marcus.e.helman@gm.com, classicrendezvous@bikelist.org
Subject: Re: [CR]28 teeth with Campagnolo Nuovo Record?
Date: Mon, 19 Feb 2007 22:28:03 +0000


I''ve been struggling with 26-13 standard-6 speed on my Masi for a while, and I think I got it. This is a really short chainstay. I found I could not get the correct chain length by adding or subtracting a link, so I fell to adjusting chain length and whether it tensions by moving the wheel forward and back. I think movingteh wheel back is equivalent to shortining the chain. I like to get some tension on 13-52 and no interference plus no excessive cage tension in 42-26. I found the magic spot for my bike, but I dont think I have the courage to go back and try to get a 28 to work. I've jsut barely kept the NR's cage from scraping the 26 tooth cog while still having enough tension to hold tight on the 13-52. My wheel is not pulled all the way back. I suppose I'd start by adding one link then moving the wheel forward and back to see if I can get the cage to rotate enough to clear the 28 T cog. If that will happen with the chain still guiding well when entering the cage, then see if 13-42 works, then get a rag handy and try 13-52. Maybe instead I'd shift to 21-52, then work my way down slowly to 13-52, watching for chain droop and chain throwing. Not pleasant.

Personally, I don't think it's worth it to get another 2 teeth in the back, and I am not sufficiently macho to have to say "I did it."

Ken Freeman
Ann Arbor, MI USA


-------------- Original message --------------
From: marcus.e.helman@gm.com

> I have heard that some people are able to get a Nuovo Record to shift onto

\r?\n> a 28 tooth freewheel cog. I have also heard that 26 is as high as the

\r?\n> derailleur can reliably go. Clearly there are a number of variables at

\r?\n> play here. My question is how should I go about setting it up? Set the

\r?\n> wheel forward in the dropouts to shorten the chain? My theory is that

\r?\n> this would reduce the slack in the chain. Is it easier to do with a 5

\r?\n> speed or a 6 speed? Have you tried it? What has worked?

\r?\n>

\r?\n> Best regards,

\r?\n> Marcus Helman

\r?\n> Huntington Woods, MI