Cog size with old Dura Ace mech....

Guys,

Does anyone know if an old 7400 Dura Ace rear mech will accomodate a 7
speed cassette with a 28 largest cog?

It's part of a retro build project, my wheels currently have a 12 (or
13) - 21 HG cassette and I wanted to swap to a larger range for hill
climbing; would I be safer sticking to a 12-23??


Regards

Dave

David North wrote:
Guys,

Does anyone know if an old 7400 Dura Ace rear mech will accomodate a 7
speed cassette with a 28 largest cog?


IME, yes.


It's part of a retro build project, my wheels currently have a 12 (or
13) - 21 HG cassette and I wanted to swap to a larger range for hill
climbing; would I be safer sticking to a 12-23??


Regards

Dave

David North queried:

Does anyone know if an old 7400 Dura Ace rear mech will accomodate a 7
speed cassette with a 28 largest cog?

Yes it will.

Sheldon "When, Oh When Will My Server Come Back On Line?" Brown
+-----------------------------------------------------------------+
| When man invented the bicycle he reached the peak of his |
| attainments. Here was a machine of precision and balance |
| for the convenience of man. And (unlike subsequent inventions |
| for man's convenience) the more he used it, the fitter his |
| body became. Here, for once, was a product of man's brain that |
| was entirely beneficial to those who used it, and of no harm |
| or irritation to others. Progress should have stopped when man |
| invented the bicycle." --Elizabeth West, Hovel in the Hills |
+-----------------------------------------------------------------+
Harris Cyclery, West Newton, Massachusetts
Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com
Hard-to-find parts shipped Worldwide
http://captainbike.com http://sheldonbrown.com

David North wrote:
Guys,

Does anyone know if an old 7400 Dura Ace rear mech will accomodate a 7
speed cassette with a 28 largest cog?

It's part of a retro build project, my wheels currently have a 12 (or
13) - 21 HG cassette and I wanted to swap to a larger range for hill
climbing; would I be safer sticking to a 12-23??


Regards

Dave

No, it will handle a 28 just fine and dandy. Do this sort of thing all
the time with 13 and 14-28 freewheels.