FWIW &
AFAIK:
The Spirt (we all thought it was a misspelling, but apparently not) is a bargain secret that was reported to handle wide ring changes and triples surprisingly well. Not considered especially cool, but NOS samples come up for truly modest cost. I know I have one somewhere, but no photos.
It also shifts in the opposite direction, which seems to help with the wide jumps. Go with it!
Originally Posted by
WilG7
The derailleur originally on the bike was for a triple chainring group (hence the name Super Tour 15). As the actual changer had been broken off I can only guess that the one I found as a replacement was the same - a Spirt. The extension idea seems the easiest for me as I can either find one or make one as I have the tools (I'm a Jeweler).
I'll try to post a pic of her when she's done (if I can ever figure out how to get one small enough(?) to be accepted here
Ride Safe!
Wil