Kevin,
Have you adjusted the H(igh) and L(ow) screws on the RD? They are limit stops to keep the chain from jumping off and onto either your spokes or rear drop outs. Do you now have 7 cogs? Do you know the tooth counts on the largest and smallest cogs? Are you still using the stem shifters?
Yesterday I installed a first generation Shimano 600 long cage RD on my Traveler. I'm still using the orginal "tubular" Schwinn rims with the Shimano 5 cog freewheel (13-28 tooth) while it's on the trainer for the winter. In warm weather I use lightweight alloy rims off a same vintage Le Tour which has a Shimano 6 cog free wheel (12-28) tooth. All I have to do when I change rims is readjust the H and L screws.
The reason I changed from the original was to make it work with a triple crankset I also installed. The long arm can handle larger differences in cog size and take care of the chain.
How cold is it on the far side of NY? It's -1 here in NH.
Bob
__________________
Bob
Enjoying the GA coast all year long!
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