road curmudgeon, FG rider
Join Date: Nov 2006
Location: Gaithersburg, MD
Posts: 677
Bikes: 1973 Nishiki Professional, 1990 Serotta Colorado II, 2002 Waterford Track
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I agree with John E. Modern 10-sp require proprietary chainrings, chains and cassettes.
I actually have both 1991 DA 8 sp and my newest bike has Ultegra 10-spd (2006).
While I do like the extra choices in gears of the 10 spd, the DA STI (levers were installed in 1992) works MUCH better than the new Ultegra. Shifts are crisper and the DA levers are better machined.
I have a 10 yr supply of DA 8 spd parts as I have been buying up cassettes and chains at my local Westminster MD swap meet. I don't have a spare 8spd RD hmmmmm.