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BITD I had a couple of 7s Shimano bikes rocking 8s Ergos (the first one was my first brifted bike), with the Campy RD. Third Shimergo bike I've had since '99, 7700 with a Shiftmate.
Only drama I've had was the third bike; the 9s rear lever had some overshift built in by way of a little float between the lever body and the spring cage, which was causing the chain to catch the next cog. I can't understand why the same thing wouldn't have happened minus the Shiftmate and Shimano RD and cassette - it's really strange if you think about it... Anyway, stuck a couple of ziptie offcuts in the shifter and it felt just like the 8s, except the relative crispness of 9s. I love the way G-spring Ergos feel on a Shimano drivetrain.
Been trying to get hold of a 10s index ring for that shifter for ages : (
Kimmo-
All the Shimergo people, I am about to try Campag Veloce 10spd shifter on a 1x set up with shimano 9spd rear mech because I found both an xtr 9spd rear mech (carbon) and the shifters cheap. Initial problem was I had to install an inline cable tensioner as the mech, unlike cheaper models, didnt have barrel tensioner. This is as far as I have got. This article
https://www.cxmagazine.com/shimano-campagnolo-ergopower-compatibility
says it should work great and depends on the way you clamp down the cable at the mech. Am excited to get this going although having a fancy rear mech has made, and might make, things trickier than they need to be, any suggestions?
tmevans
Or my super record 11s shifters with a shift mate, deore derailleur and sunrace cassette.
I think the key with mixing and matching is the second part of mori's statement - the 'blaming the product' when shit goes wrong.
There always an element of risk when you go off script, but you need to own it, chalk it up to experience and move on if something goes wrong.
There's an impression that campagnolo is more finicky than other brands, but it's been reliable and versatile in my experience. Because of smaller market share there's fewer examples of homebrew setups, I merely wanted to illustrate you don't need to be limited to the official supported configurations, if you so desire.