Vintage find has me stumped
 

Hello everyone,
I was wondering whether anyone can give me a hint as to what kind of bike this is. I recently picked up this old road bike at a yard sale, it has an odd seat stay unlike anything I have come across. As you can see its been crudely painted and further excavation couldn't uncover any brand. It has Columbus dropouts and came with Suntour Superbe equipment and Sugino cranks. I couldn't find a serial on the BB.

Anyways here are some pics.

http://i196.photobucket.com/albums/a...D/100_2077.jpg

http://i196.photobucket.com/albums/a...D/100_2074.jpg

http://i196.photobucket.com/albums/a...D/100_2072.jpg

http://i196.photobucket.com/albums/a...D/100_2071.jpg

http://i196.photobucket.com/albums/a...D/100_2070.jpg

http://i196.photobucket.com/albums/a...D/100_2068.jpg

http://i196.photobucket.com/albums/a...D/100_2078.jpg

No clue who made it, but I LOVE the wishbone stays and seat cluster.

SP
Bend, OR

+1. Love the whole rear set up. I would lean towards French vintage, but not enough information. Also, given it has a Kalloy post, I wouldn't assume the other components were original. If it is the right size, I would have it professionally painted if I were you.

Thank you for the replies. I also thought the seat stays looked quite pretty. Did they offer any advantage over regular stays.

@ TugaDude, ill take your advice and get it painted. I doubt it would be worth much but it would certainly be something different.

My best guess would be a Diamant bike, not idea on the model or year however.

http://www.bikeforums.net/showthread...hlight=diamant

One key is what type of Bottom bracket threading?

while I'm not a structural engineer, the rear stay configuration has to have some effect on the handling and/or ride of the bike I would think. The effect could be very negligible.

Basically, what you get is a very distinctive bike design, a design affectation perhaps, that is unique to certain builders. Diamant is one such builder and I see strong similarities between the frame you have and the one linked above. Not exact, of course, but similar.

I have a hard time believing someone got their hands on a nice frame and painted over chrome lugs, but I've been surprised before!

This seat cluster, posted by s70rguy (on the linked Diamant thread) is a dead ringer for yours:

http://www.bikeforums.net/attachment...1&d=1284992526

So I'd say "Diamant", too. Anybody know where I can find one in 64-65cm?

SP
Bend, OR