Later Huret derailleurs did away with the nut. The hangar bolt is split and locks in place by a small internal bolt that acts like a wedge, sort of like a bar-end shifter. The wedge bolt is accessed from the back, ie.the threaded end of the hangar bolt. I haven't seen one of these on a Jubilee, but some Duopars and Successes have it. Perhaps this is what you have. Leonard Bulger Marblehead, MA USA
chasds(AT)mindspring.com wrote: I have a bit of a mystery on my hands, one I'd like to solve.
I have a Huret Jubilee rear derailleur with what appears to be the original hanger bolt for a Campagnolo drop-out hanger. I also have the special purpose-made "claw"--the stop that fits over the bolt, with adjusting screw, to position the derailleur properly.
The problem is, the hanger bolt appears to have too many threads on it. When I tighten down on the thing it tightens all the way down, rendering the derailleur body immobile. I know this is not how it's supposed to work...it's supposed to work like a Campagnolo or Suntour..the derailleur is supposed to rotate around the bolt, because the threads end and the bolt stops just short of the derailleur body, leaving a bit of room for the derailleur to move.
Any solutions, anyone? Like, a bolt that will actually work right in
this
configuration?