I have had an old Campy rear derailleur - a 980 I think - in my stash for some time, and I also had a Soma long cage replacement for a Nuovo Record RD. I just could not bring myself to modify a Nuovo Record rear (it is just so gorgeous) but the plain lines of the Soma long cage mated up pretty well with the squarish 980. When I tried to bolt the Soma cage to the 980, though, I discovered that it used an M7 bolt rather than the M6 of the NR. So I tapped out the cage, and voila! Now to find a bike to use it on.

https://cimg5.ibsrv.net/gimg/bikefor...9a5031c8e7.jpg

Did the M7 tap self center as you enlarged the hole? Or did you have to fixture up a holding device of some sort and drill first to enlarge the M6 hole? Just curious.

BTW - what gear range are you going to be shifting with the long cage?

The tap did not self center. For this, I simply eyeballed my work carefully and it went in straight.

I have no idea yet what bike I will use it on. All of my old bikes use triples, though, so I will find a place for it!

Thank you. I will do that!