I put Sachs NS Ergos and rear derailleur on my 1994 Cannondale R500, way back in about 1995. It came with RX100 kit with DT shifters. I ran it with a Campy 8-speed cassette, I think.
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"Don't take life so serious-it ain't nohow permanent."
"Everybody's gotta be somewhere." - Eccles