Cables por vida.
If you think that you're the last mechanical
holdout, we assure you that you're not alone. Even in the face of
precise, electronic adversity, we find that cables still have as much to
offer as wires. And while we hate to gloat, the Shimano Dura-Ace
FD-9000 11-Speed Front Derailleur proves us right.
To respond to the ever-growing popularity of the Di2 front
derailleur, Shimano made some drastic revisions to the overall design of
the FD-9000. To start, we should explain Dura-Ace 9000's shifting goal
-- easier action with a shorter stroke at the lever. To achieve this, a
multi-part strategy had to be developed. First, Shimano had to revise
the actuation ratio -- easier said than done. By standard, Shimano has
operated on a variable ratio. This means that the ratio between a unit
of shifted cable and its measured movement of a derailleur is varied
throughout the gear range. As Shimano sees it, every gear jump is
different, and requires a variance in actuation. However, to minimize
the stroke effort, the variable ratio had to be lessened. This required a
replacement of the leverage points on the front derailleur's body.
You'll notice that FD-9000 now has a heightened profile with the
leverage point at the top of the body. The enlarged pull arm creates
more leverage, and this strengthens the pull, eases the actuation, and
thus lessens the shift stroke.
All in all, Shimano claims that the new derailleur system creates a
43% reduction in shifting effort over 7900 at the lever. And to round
things off in the efficiency department, the FD-9000 is pulled by
Shimano's proprietary, polymer-coated shift cable. Shimano's new cable
nearly eliminates mechanical drag, and further enhances shift accuracy.
Altogether, the minimization of stroke and required effort creates a
shifting experience on-par with the accuracy found in Di2 systems. 9000
guarantees predictability and ease across the shifting range, and to
accommodate for FC-9000's 55 tooth chainring capacity, Shimano
reintroduced its micro-trim system. In this iteration, it works opposite
to prior generations, in that the trim moves outward for wide-open,
The Shimano Dura-Ace FD-9000 11-Speed Front Derailleur
is available in one color and as either a braze-on or clamp. The clamp
is offered in both a 31.8mm/28.6mm or 34.9mm clamp diameter. Please note
that the FD-9000 is intended for use with the Dura-Ace 9000 component
- 43% lighter action
- Shorter lever stroke
- 28.6/31.8mm or 34.9mm clamp