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Dura-Ace STI left shifter... 2 clicks?(7 posts)

Dura-Ace STI left shifter... 2 clicks?flate
Jun 17, 2003 7:05 AM
Just got my new Dura-Ace STI shifters installed, and although it is a ST-7700-C (Double), when i go to downshift (Large to small chainring), i have to go through 2 clicks, is this normal, or a defect with my left shifter? I am running a double set-up.

Jun 17, 2003 7:34 AM
The middle position is that you can trim the front changer, when you are in a big-big gear.
normal !the bull
Jun 17, 2003 7:35 AM
trim-to make fine adjustments depending on what gear you have selected on cassette.
re: Dura-Ace STI left shifter... 2 clicks? Not mineChen2
Jun 17, 2003 9:28 AM
My '98 D-A shifters do not have any intermediate clicks (detents) like the Ultegras and others. I can trim (but never need to) by sliding the derailleur from either side up to 5mm, but this is like friction, not a click stop. I don't know if the later model D-A double shifters have been changed. The Shimano European web site has more technical information than the U.S. site, suggest you check there.
Take back and have LBS adjust. but check this firstPaul
Jun 17, 2003 10:35 AM
1. small chain ring, largest cog. You should be about 1 mm away from inner der. plate.
2. Large chain ring, smallest cog, same as above distance from outer der. plate..

You will probably see that you have much more distance when in number 2 position, why you have to trim/adjust.

sounds like you not sure, so don't mess with it. LBS know that they will need to adjust. I would start it from scratch, but it's too many instructions. Ask you LBS for the instructions that came with the shimano equip. that you purchased. Buy a book on bike mechanics about 15.00.

good luck
Installation PDF's are at nmpitt83
Jun 17, 2003 11:35 AM
Ahhh... yes, the manual...flate
Jun 17, 2003 1:35 PM
RTFM as they say... it is indeed the trim click. It is very well indicated in the manual.... that the lbs didn't leave me... oh well.

thanks to everyone