I haven't seen that arrangement before. I wish there were a shot from the "top," so one could see ring spacing. I suspect it is an assembly error, and two outer chainguards were used. (Or maybe somebody had a very narrow chain fall in between the two rings?) These cranks are very versatile, and all kinds of combos are possible...
Maybe somebody else knows more?
Jan Heine, Seattle
>
>------------------------------
>
>Date: Mon, 28 Apr 2003 22:09:24 -0700
>From: "Brandon Davis" <art_52@hotmail.com>
>To: <classicrendezvous@bikelist.org>
>Subject: [CR]Odd TA "inner" chainguard on eBay
>Message-ID: <Sea1-DAV57Q8AZndKaQ00000ad4@hotmail.com>
>References: <CATFOODfwfbs0yV8a5c00002296@catfood.nt.phred.org>
>Content-Type: text/plain;charset="iso-8859-1"
>MIME-Version: 1.0
>Content-Transfer-Encoding: 7bit
>Precedence: list
>Message: 19
>
>I came across this on eBay (but, of course), and wondered if anyone 1) had
>seen anything like it before, and 2) would explain the raison d' tre of it:
>
>T A old style triple crank right arm Item # 2172317848
><http://ebay.com/<blah>
>
>If you look closely at the two pictures, you'll see that there is an outer
>chainguard (which is not all that unusual). But look a little closer, and
>there's another(!) "chainguard" on the middle ring.
>
>This setup seems quite odd to me, at least ...but I figure one of the CR
>list experts can/will enlighten me.
>
>In correspondence with the seller, he didn't know what it was for either;
>he'd acquired the crankarm & rings as shown, as part of a lot.
>
>--- brandon davis ---
>-- sacramento, ca --
>------------------------------
>
>_______________________________________________
>
>
>End of Classicrendezvous Digest, Vol 4, Issue 100
>*************************************************