The rear dropout is for a Simplex Champion du Monde rear derailleur. Some Osgear rear dropouts were similar but did not have the gear hanger. Sorry I didn't make it clear. Regards Hilary Stone
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>From: David Perry <bikeworks@bikecult.com>
>To: classicrendezvous@bikelist.org
>Subject: [CR] Old bike mystery...
>Date: Mon, Apr 2, 2001, 7:52 pm
>
> Thanks to "wornoutguy" Sam for asking about that Edge Massed Start Special
> frameset on my shop's site. And for comments from Chuck and Hilary.
>
> I estimated its origin from the 1930s (the later part of decade) because of
> the Osgear dropout introduced around 1933 I believe. Is Hilary saying it's
> not an Osgear but a Simplex? Or that it's an Osgear but looks like Simplex?
> It has a single braze-on shifter mount. It did not come with a derailleur
> and we are not sure if the wheels for it are still around.
>
> The frame came in lot of bikes from the old Hill Cycle Shop in
> Philadelphia. They had a racing team for many years and the bikes and parts
> range in date from pre-WW2 to the late 1960s. They must have had a frame
> builder around because there are a couple HCS-labeled frames that were
> never assembled. Also, a old Paramount track frame in the collection has a
> seat stay repair with a Hill Cycle Shop stamp on it.
>
> I assumed it is an American frame, because I believe American road racing
> in the late 30s was called massed start racing (the 1932 Olympic RR was a
> time trial), and because British racing frames may not have had makers
> decals. I sure wish someone like Peter Nye (or six-day Jeff?) who knows
> more about pre-war US racing could answer some questions.
>
> Thanks
> David Perry
> http://www.bikecult.com