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DuraAce 9spd Downtube Shifters - Are they Triple Compatible?(11 posts)

DuraAce 9spd Downtube Shifters - Are they Triple Compatible?zmarke
Oct 14, 2002 11:52 AM
I want to use these on a retro-style bike with either tiagra or 105s to keep the cost down. Since I am going to be using a triple crank I want to know if these will work?

Anybody try it? Anybody get it to work?

Nashbar said No.
Performance said Yes.
Shimano tech says "maybe in friction mode" but "iffy at best"
I can't see why it won't........Dave Hickey
Oct 14, 2002 11:57 AM
The right shifter will work fine as long as your using 9 speed 105 or Tiagra. The left is always friction, so I don't see why it won't work on a triple front.
I can't see why it won't........zmarke
Oct 14, 2002 12:27 PM
Does it need more cable pull? Does the shifter have it?
I can't see why it won't........Dave Hickey
Oct 14, 2002 12:36 PM
It has plenty of cable pull. If you didn't adjust your front derailleur with the limit screws, you can go from the frame to the chainrings. There is plenty of cable pull.
I should have said.......Dave Hickey
Oct 14, 2002 1:28 PM
Without the limit screws, the front derailleur will bottom out on the inside and go all the way to the crankarm on the outside. It has plenty of cable pull.
That's for sure!Matno
Oct 14, 2002 6:20 PM
I've got those shifters on my two ring setup, and I keep forgetting to adjust those limit screws. I have to be VERY careful not to overshift because I can easily go what looks like a half inch too far in either direction! (That may be a bit of exaggeration, but it's close. Very annoying at the bottom of a long climb!)
...adjust those limit screws! (nm)Spunout
Oct 15, 2002 3:52 AM
It's a legit question - glad to hear it'll workRay Sachs
Oct 16, 2002 9:13 AM
There were some really nice Ultegra level Shimano 8-speed downtube shifters that would NOT work with a triple - didn't pull enough cable. I don't remember whether they were badged 600 or something else. They had a wound up spring in the front shifter and it was the lightest action front shifter I ever used, but it wouldn't pull enough cable to cover three rings.

So sad...It "should" not workzmarke
Oct 16, 2002 12:09 PM
I spoke with Shimano again but this time was lucky and got a tech that was willing to talk about "unofficial" Shimano setups. He spoke with a few other techs and they all agree that it will not work because you will not have enough throw (or pull) to get to the largest chainring becasue of the SIS limit stop in the shifter even when you are in friction mode.

He mentioned I could use the bar end shifters sl-bs77 that were designed to work with a triple front.

I really wish someone had these shifters and could try it out on a bike. I would but I am trying to determine if it will work before I spend my money on building up a bike.

"even when you are in friction mode"?!!Matno
Oct 20, 2002 3:52 AM
For the front shifter, there is no other mode. It is friction only. There is no SIS on the front (left) shifter. Perhaps a bit of miscommunication? Can you measure how much derailleur movement you need with your triple? I could check mine for comparison (although I have an old 600 front derailleur, which may or may not make a difference. It's the one thing I never upgraded). It would give me an excuse to finally adjust those limit screws...
I'm so confusedzmarke
Oct 21, 2002 4:45 PM
I have no idea why but in all of my research I never took the time to check the Shimano website. I called the Shimano Techs again and they were baffled when I mentioned that the website stated the front is triple compatible. They said," well, then I guess it should work".

Anyway, I just went ahead and bought the shifters hoping they will work when I build my bike which may now have to wait until spring...I have my mountain bike for the winter.

I promise to re-post when I get around to building my retro-bike with the Dura Ace shifters and triple chainring although it may not be as retro as I would like.