You can use an Osgear with a front derailleur; have a look at http://www.classiclightweights.co.uk/
Neil Foddering Weymouth, Dorset, England
> From: oldtrikerider@q.com
> To: classicrendezvous@bikelist.org
> Date: Sun, 14 Feb 2010 22:53:54 +0000
> Subject: [CR] Osgear derailleurs
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> I've looked at a few Osgear equipped bikes (online) and it would seem that one can't use a front derailleur with a a rear Osgear derailleur because of the idler pulley mounted below the chainring. Am I wrong?
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> Paul Patzkowsky
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> Longmont, Colorado