Singlespeed & Fixed Gear - Help me ID this Shimano chainring (pic)

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carleton
05-14-06, 02:18 PM
I'm looking for the model number and/or maybe info on where to get one. I believe that this is track specific.

Sorry for the low quality pic.

http://static.flickr.com/47/146375432_26ad9a943f_o.jpg

Thanks,

C

pitboss
05-14-06, 02:23 PM
looks like one of their TT rings...not sure on the cranks. DuraAce for sure though if they are Shimano cranks
baxtefer
05-14-06, 02:27 PM
I would have said the TT rings as well, but those are 130 BCD

carleton
05-14-06, 02:28 PM
']looks like one of their TT rings...not sure on the cranks. DuraAce for sure though if they are Shimano cranks

Yeah, it does look like one of their TT rings. But, I saw it on the bike of a messenger in Baltimore that is known for having dope track equipment. That's why I'm guessing (and hoping) that it may be a track specific ring instead of a 9 speed TT ring.
carleton
05-14-06, 02:31 PM
']looks like one of their TT rings...not sure on the cranks. DuraAce for sure though if they are Shimano cranks

Yes, they are Dura Ace cranks.

Here's the rest of the bike:

http://static.flickr.com/50/134017712_3bbd873849_o.jpg (http://www.flickr.com/photos/carleton_hall/134017712/)
pitboss
05-14-06, 02:37 PM
throw this question into the Track forum if the rider, indeed, has dope track "shhit"
slopvehicle
05-14-06, 02:44 PM
I saw it on the bike of a messenger in Baltimore that is known for having dope track equipment.

Something about this statement makes me want to have as many heavy, high-maintenance gears as possible, STAT....
carleton
05-14-06, 04:45 PM
Something about this statement makes me want to have as many heavy, high-maintenance gears as possible, STAT....

I don't get it.
iamtim
05-14-06, 06:01 PM
Maybe it's the picture, but to me it looks oddly elliptical as if it were a Biopace ring.

*shrug*
carleton
05-14-06, 06:05 PM
Maybe it's the picture, but to me it looks oddly elliptical as if it were a Biopace ring.

*shrug*

That image is the bottom corner of a wide-angle photo. So, it's distorted.
iamtim
05-14-06, 06:25 PM
That image is the bottom corner of a wide-angle photo. So, it's distorted.

Ah. Well, never mind my comment then. :)
goggles
05-14-06, 09:01 PM
I'm glad that this is being discussed. I have been wondering about this chainring ever since seeing these pictures on Cycling News. The second image clearly shows champagne 75's which only come in 144. Also, I don't see any of the ramp pins normally seen on the 130 bcd 3/32 shimano tt type.

So I speculate that this is indeed a 144 bcd track chainring. I mean clearly the teams and this messenger are not modifying the bolt patterns on the chainrings. Also, and this is a moot point because of the Sugino pic, but why encounter chainline issues using the old dura ace double road crank on a track bike-with all 3/32 no less...

Euro-Asia, which imports the normal Shimano chainrings does not have this enigma on their website. Sorry I don't have any specifics but I thought I might help out a little.

Keep us posted