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 Post subject: Re: Re:
PostPosted: Fri Jun 26, 2020 10:52 pm 
Retro Guru
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Joined: Thu May 17, 2012 11:04 am
Posts: 874
Location: manchester
pigman wrote:
Asking anyone ...
On the rear dropout pic, what is the vertical part at the front of the dropout that goes down? What purpose is it for?


To facilitate quick accurate wheel changes


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PostPosted: Fri Jun 26, 2020 11:01 pm 
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Joined: Fri Oct 14, 2011 8:41 pm
Posts: 9892
Location: Cumbria
As above, to spin the wheel around and get it back in place as quickly as possible as way back the only way of changing gear was to have two sprockets on the rear wheel.

If that makes sense lol

Takes me back to the days when I followed the bunch in a Falcon car ready to change wheels, only this time it was wheel guides on the brakes that helped....

Sorry, enough reminiscing. Back on topic :)


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 Post subject: Re:
PostPosted: Sat Jun 27, 2020 11:58 am 
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Joined: Wed Dec 10, 2008 9:19 am
Posts: 2587
Location: Sheffield, top city
Yeh, that makes sense, thanks. But that opens a further question. Why was the idea dropped in the 60s onwards? Aesthetics? Weight?


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 Post subject: Re:
PostPosted: Sat Jun 27, 2020 12:11 pm 
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Joined: Thu Jun 25, 2020 9:12 pm
Posts: 6
I’m loving all this info and reminiscing.
I’m very mechanically skilled but don’t be surprised if I start asking about restoration and cleaning techniques.


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PostPosted: Sat Jun 27, 2020 12:21 pm 
rider | rBoTM Winner
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Joined: Fri Jan 25, 2008 1:42 pm
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Location: West Yorkshire
I thought these were ends for Osgears and the like to protect the hanging arm shifting 'prong' from damage by a clumsily removed wheel. I think Percy Stallard had his own version that he sold to the trade.

http://www.classiclightweights.co.uk/stallard.html

http://www.classiclightweights.co.uk/osgear.html


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PostPosted: Sat Jun 27, 2020 12:34 pm 
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Posts: 874
Location: manchester
Old Ned wrote:
I thought these were ends for Osgears and the like to protect the hanging arm shifting 'prong' from damage by a clumsily removed wheel. I think Percy Stallard had his own version that he sold to the trade.

http://www.classiclightweights.co.uk/stallard.html

http://www.classiclightweights.co.uk/osgear.html

Correct but not exclusively
http://www.classiclightweights.co.uk/de ... ar-hs.html


Last edited by mdvineng on Sat Jun 27, 2020 12:46 pm, edited 1 time in total.

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 Post subject: Re:
PostPosted: Sat Jun 27, 2020 12:37 pm 
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Joined: Thu Jun 25, 2020 9:12 pm
Posts: 6
I thought I knew a bit about bikes but Wow, I’ve never seen that set up before.
Every days a school day!!!


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PostPosted: Sat Jun 27, 2020 3:06 pm 
rider | rBoTM Winner
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Joined: Fri Jan 25, 2008 1:42 pm
Posts: 5545
Location: West Yorkshire
mdvineng wrote:
Old Ned wrote:
I thought these were ends for Osgears and the like to protect the hanging arm shifting 'prong' from damage by a clumsily removed wheel. I think Percy Stallard had his own version that he sold to the trade.

http://www.classiclightweights.co.uk/stallard.html

http://www.classiclightweights.co.uk/osgear.html

Correct but not exclusively
http://www.classiclightweights.co.uk/de ... ar-hs.html


A friend of mine (who sadly passed away recently) had a bike with a Vittoria Margherita gear (possibly a Bianchi but not certain) and he reckoned it wasn't the easiest mech to use. Bending down once to change gear he ended up almost in the hedge! Finger-chopping good I reckon!


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PostPosted: Sat Jun 27, 2020 7:17 pm 
Retro Guru

Joined: Sun Aug 22, 2010 7:07 pm
Posts: 1705
Location: Cotswolds
Not Osgear ends. the prong is just to help wheel replacement.
Osgear ends have a cut out to take the hub spindle in a fixed forward position. This is better for getting the changing arm close to the cogs.

As possibly the last person alive to have used a Paris Roubaix gear in a real road race there was nothing dangerous about undoing the rear wheel and changing gear on both at once.

Like some refer to "suicide" front changers, really no different than using a down tube bottle cage.

And if you have never had to stick a foot behind the fork crown to slow down....

Keith


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 Post subject: Re:
PostPosted: Tue Jun 30, 2020 10:06 pm 
Retro Guru

Joined: Wed Nov 02, 2011 11:29 pm
Posts: 593
Location: Sheffield
OK, so I can't give any help on the bike itself, but my dad knew Bill Oldham well. In fact, he used to spray and bake the frames for them in the 50s, in the big oven at the Geigy Chemical Company, where he worked... So, your frame may well have been sprayed by my dad. Bill was also an AA patrolman, on a motorbike and sidecar. My dad bought his first bike from Bill Oldham, a Chrome Carlton.

I didn't expect that much in response to asking if he remembered W Oldham!

Nick


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