Hi all
Digging through a box of orphans at my LBS, came up with (what to me is) an unusual arm/ring. Wondering if anyone can help me identify this / or maybe have a matching NDS mate?!?
It's a 5-pin (ala TA etc.) arm... "AERO [cold forged]":
http://flickr.com/
... tapered 170 arm, 50.4 bcd. "Duralumin forged" is cast on the back. Ring itself is 46t, and differs from TA in having 5, rather than 6 arms. Drilling for additional "inner" rings matches the TA diameter - although of course, they're not really compatible! :-)
Oh, and the puller threading is 22mm (i.e. not TA). All in all a nice, weird, orphan crank. "Just what I was looking for..." ha, yeah!
=- Joe Bunik
Pittsburgh, PA USA