So, I’ve been wanting to try ergo shifters, but am kind of in love with my vintage roval wheels, which take a 7 speed freewheel. At the co-op the other day I was looking around the back room and saw a tiny touring bike with what looked like 8 speed campy ergos. I got closer and it was actually Sachs, which were made by campy. Also had a Sachs 5000 derailer set , some early speed play pedals, and a super long 27.0 American classic seatpost. I offered $100 and it was mine.
so… indexing is interesting. The Sachs went on and shifted alright, but still hanging up on some shifts. I took it off and got the 7 speed chorus derailer to shift pretty well across the 7 speed shimano cassette. Extremes will hang up, but the middle gears work well.