Dura Ace 7800 Front Derailleur Installation/Adjustment Question

Mauiguy

Greetings,

I just installed a new D/A 10sp front derailler for the first time.
Noticed when shifting, the feel of the shift lever when going to the
big chainring was very stiff - nothing like the buttery smooth action
when shifting the rear derailler.

Most disturbing was the loud sound when shifting from the big to the
small chainring. This isn't just a loud click but almost a bang, It
vibrates the entire frame and makes a really harsh jolt felt through
the crankarm. Not only that but it feels like it takes way too much
effort to move the lever (going in either direction).

This can't be right. It's so different from the rear derailler's
super smooth action, something must be wrong.

Does anyone have any ideas? Many thanks!

-Gary

Qui si parla Campagnolo

gary-<< I just installed a new D/A 10sp front derailler for the first time.
Noticed when shifting, the feel of the shift lever when going to the
big chainring was very stiff - >><BR><BR>

The 10s left lever has a higher mech advantage because it is longer. Ensure the
BB guide is clean and lubed. Also ensure the inner wire and housing (REc 5mm!!)
is smooth..if all above is set, it is as good as it's gonna be. The 10s front
der does seem to have a stronger spring...

Peter Chisholm
Vecchio's Bicicletteria
1833 Pearl St.
Boulder, CO, 80302
(303)440-3535
http://www.vecchios.com
"Ruote convenzionali costruite eccezionalmente bene"

JayofMontreal

It does pop down pretty hard, it should shift up pretty easily though
(atleast it does on my 2 DA10 bikes).

--


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"Mauiguy" <usenet@hydromedia.com> wrote in message
news:231a6e51.0404190347.7de6b9c@posting.google.com...
> Greetings,
>
> I just installed a new D/A 10sp front derailler for the first time.
> Noticed when shifting, the feel of the shift lever when going to the
> big chainring was very stiff - nothing like the buttery smooth action
> when shifting the rear derailler.
>
> Most disturbing was the loud sound when shifting from the big to the
> small chainring. This isn't just a loud click but almost a bang, It
> vibrates the entire frame and makes a really harsh jolt felt through
> the crankarm. Not only that but it feels like it takes way too much
> effort to move the lever (going in either direction).
>
> This can't be right. It's so different from the rear derailler's
> super smooth action, something must be wrong.
>
> Does anyone have any ideas? Many thanks!
>
> -Gary


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