Joined: Feb 2012
Posts: 19,373
Likes: 5,515
From: Rochester, NY
Bikes: Stewart S&S coupled sport tourer, Stewart Sunday light, Stewart Commuting, Stewart Touring, Co Motion Tandem, Stewart 3-Spd, Stewart Track, Fuji Finest, Mongoose Tomac ATB, GT Bravado ATB, JCP Folder, Stewart 650B ATB
Those mid/early 1990s SunTour ders worked well enough. I have a couple in my stable. My only complaint is that they have a very strong return spring and with Campy Ergo it's possible to get a power on inadvertent click/shift, if the G springs are worn.
But I also use various similar era Shimano ft ders and like them very much. I search by tube clamp diameter and x3 or triple (ebay). Usually there's a few to choose from. Be aware of the big ring size the der is designed for. Some ders in this era were beginning to be shaped for 46-42 tooth rings. Also note the cable routing direction. Andy
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AndrewRStewart