DA 7700 vs 7703 big ring

[rodcad]

Anyone know if the 53t big ring is the same on a 7703 triple crank as a 7700 double?

[rwsaunders]

Sheldon is your friend.

http://www.sheldonbrown.com/dura-ace.html

[rodcad]

I know I'm stupid, but all that jumps out at me is the 39t inner ring is "special". What about the big ring?

[KidWok]

Yes...I believe they are different matched sets. Check the letter designation...I think triples were "D" series meant to run with a 53/39/30.

Tai

[stien]

They all work fine together.

[rodcad]

I did verify the big ring on a triple is a D series.

I'd love to buy a new 53t "d" ring if anyone has one. Also a 39t middle.

[oldpotatoe]

I did verify the big ring on a triple is a D series.

I'd love to buy a new 53t "d" ring if anyone has one. Also a 39t middle.

Vecchio's has the middle ring, the integrated one with the small hooked to it. Expensive,

Jim@vecchios.com

Use any 53t big ring, DA for double for example.

[11.4]

I'm looking at a NOS 7703 ring set next to a NOS 7700 ring set right now. The 7703 is indeed stamped "D" but it appears to be completely indistinguishable otherwise from the 7700 ring. The most I can determine is that the chain catcher pin is a slightly different design between them -- not different dimensions but different shape. The other rings are quite distinctive.