At 02:04 PM 19/02/2007 -0500, marcus.e.helman@gm.com wrote:
>I have heard that some people are able to get a Nuovo Record to shift onto
>a 28 tooth freewheel cog. I have also heard that 26 is as high as the
>derailleur can reliably go. Clearly there are a number of variables at
>play here. My question is how should I go about setting it up? Set the
>wheel forward in the dropouts to shorten the chain? My theory is that
>this would reduce the slack in the chain. Is it easier to do with a 5
>speed or a 6 speed? Have you tried it? What has worked?
I'm using a Shimano 14-28 7-speed with no problems with a SRAM PC-58 chain (52-42 chainwheels). My original freewheel was a Suntour 6-speed 13-21.
According to Sutherland's, the NR can take up to a 28t freewheel and has a 24 tooth maximum total capacity (difference between smallest & largest freewheel, plus difference between smallest and largest chainwheels, in my case, 14+10=24.)
The only changes I had to make with my 126mm dropout spacing to accomodate 7 speeds was add about 1mm between the locknut and spacer on the RH side for chain clearance. Aside from adjusting the RD stops, I also found I had to set the rear wheel back a bit in my case. (The first time around I went with a Shimano 14-28 6-speed block and it was completely plug-and-play with absolutely no adjustments and even the same old chain.) Those Shimano freewheels with their funny teeth are amazing. Shifting is smoother and quieter than it ever was.
John Betmanis
Woodstock, Ontario
Canada