Long story short, I don't think so. A bolt on derailleur hanger won't work. The hanger is designed with a tang that slips into a horizontal dropout so it won't rotate. With a vertical dropout, there's no room for the bolt on hanger. Even if there were, it would be at the wrong angle. Here's a picture: http://sheldonbrown.com/images/adaptorclaw.gif
If it's designed to bolt directly to a hanger, note that the derailleur "stop" is in a different location for older Huret models. J.P. Weigle has a good post on this: http://www.flickr.com/photos/49353569@N00/12748009134/ You would have to modify the stop by removing material (reverse of the JPW method). I'm guessing that you have a bike with vertical dropouts that was made for the Campy/SunTour/Shimano style derailleurs? Peter Weigle is an expert on old Duopars, you might contact him for verification. On Monday, March 24, 2014 9:21:13 AM UTC-7, Eric Norris wrote: > > Does anybody have experience using a Sachs Duopar on a frame with vertical > dropouts? It appears to be designed to be used with a bolt-on hanger that > would work only with horizontal drops: > > http://tinyurl.com/ofjwcrr > > --Eric N > campyo...@me.com <javascript:> > Web: www.campyonly.com > Twitter: @campyonlyguy > Blog: campyonlyguy.blogspot.com > > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.