Here's my recollection of those dropouts: as Jan suggests, those inserts are threaded. What kept them from rotating is that they were a relatively tight fit. I don't recall any extra ribs, splines or keyways.
If my recollection on this is faulty, please let me know.
By the way, there are also Simplex dropouts that use a plastic
insert. In this case, though, the insert is cylindrical and
fits in a hole drilled behind the axle slot.
Cheers,
Fred Rednor - Arlington, Virginia
> While I am unfamiliar with that type of Huret dropout, I
> looked at
> your photo. The Singer dropout you show appears to have an
> insert
> that acts as a "nut" - assuming it's threaded. In that case,
> the
> dropout itself must have a simple, unthreaded hole for the
> system to
> work. Is your bike missing the presumably threaded inserts?
>
> I wonder how the inserts are kept from turning. Is there a
> groove at
> the top and bottom of the dropout slot, with a matching
> splines in
> the insert, so the insert can slide back and forth only?
>
> Maybe I there is something I don't see. Check whether your
> holes are
> threaded. Even stripped threads still look "threaded." If my
> hypothesis is correct, the holes should be smooth.
>
> My Singer has fenders, so it has vertical dropouts, which are
> not adjustable...
> --
> Jan Heine, Seattle
> Editor/Publisher
> Vintage Bicycle Quarterly
> c/o Il Vecchio Bicycles
> 140 Lakeside Ave, Ste. C
> Seattle WA 98122
> http://www.mindspring.com/
>
>
> >I have a raleigh competition with moderate rust. It was
> purchased in 1974,
> >crashed in 1975, and hasn't really been ridden in 30 years.
> >
> >In the process of dissassembling everything to send it out
> for a tube
> >replacement, i chanced to remove the huret dropout adjusters
> from the
> >huret dropouts.
> >
> >Strangely, the slide right out without any screwing action
> required
> >(I think i actually bumped them and they repositioned
> themselves
> >right away.) They are not bent and there is no damage in
> this area
> >of the bike.
> >
> >What gives ?? These look like the originals, they are the
> same as the
> >ones on the alex singer bike here :
> >
> >
> > http://www.ece.ubc.ca/
> >
> >
> >What gives ?? Is this a common problem with adjustable
> huret dropouts ?
> >Both sides seem to do this ...
> >
> >- Don Gillies
> >San Diego, CA
>
>
> _______________________________________________
>
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