There's also a German halfstep + granny enthusiast, who does 18tooth grannys on TA's + other modifications.
http://fahrradzukunft.de/
German language only (?)
Tobit Linke, Dortmund, Germany
> Message: 12
> Date: Tue, 29 Dec 2009 09:36:48 +0000
> From: Hilary Stone <hilary.stone@blueyonder.co.uk>
> Subject: Re: [CR] TA Pro5, Stronglight 49 Crank/Chainring (and
> shifting) Questions
> To: John Clay <jmedclay@yahoo.com>
> Cc: Classic Rendezvous <classicrendezvous@bikelist.org>
> Message-ID: <4B39CDB0.6020607@blueyonder.co.uk>
> Content-Type: text/plain; charset="ISO-8859-1"; format=flowed
>
> Chris Bell at Highpath engineering here in England can make rings to fit
> directly to the TA cranks...
>
> Check out:
>
> http://www.highpath.net/
>
>
> Hilary Stone, Bristol, British Isles
>
> John Clay wrote:
> > Thanks Thomas and everybody else for the input! Somebody I ran into (and can't find again) mentioned having a 19t chainring with a 50.4mm BCD for direct mounting to the inside of the TA flange. You could then set up something like a 44/20 to make a dandy touring double.
> >
> > I'm pretty partial to the range I got with my 44/32/20 and modified straight 8 (13-17, 20, 26, 34), I did need/appreciate the 20/34 more than a few times; it was fabulous in some small choppy mountains I encountered. Lately though it's occurred to me that I could do pretty much the same thing with a double - and the one thing that I didn't like with my triple was the very wide tread. This would solve it, so I'm looking.
> >
> > Thanks again
> >
> > John
> > Tallahassee, Florida
> > USA
************