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Dura Ace Shifter/Derailleur Compatibility

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Dura Ace Shifter/Derailleur Compatibility

Old 10-03-14, 04:00 PM
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rjhammett
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Dura Ace Shifter/Derailleur Compatibility

I have an 8 speed Dura Ace (7402) rear derailleur but no DA shifters. I have 8 speed Shimano 105 DT shifters, 600/Ultegra barcons and Sachs ergos. Has anyone had any luck using non DA shifters with DA derailleurs? According to Sir Sheldon Brown non DA shifters are not compatible with DA rear derailleurs.
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Old 10-03-14, 04:03 PM
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Originally Posted by rjhammett View Post
I have an 8 speed Dura Ace (7402) rear derailleur but no DA shifters. I have 8 speed Shimano 105 DT shifters, 600/Ultegra barcons and Sachs ergos. Has anyone had any luck using non DA shifters with DA derailleurs? According to Sir Sheldon Brown non DA shifters are not compatible with DA rear derailleurs.
this caveat only counts for 6 speed, not 8. Or at least, that's how I read the documentation.
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Old 10-03-14, 06:04 PM
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It will work, but click a lot, and you'll always be a little bit out of adjustment.

Non-DA 8-sp Shimano and Sachs will work fine with non-DA 8-sp RD's from Shimano and Sachs. Mix and match all you want.

Just leave DA out of the mix, if you want it to work quietly, until you get to 10-sp. Then, things seem to make a little more sense.
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Old 10-03-14, 06:29 PM
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LINK to another good article. Unfortunately it shows non-DA Shimano 8 shifters as pretty useless with an older DA RD (74xx series).
Now if you swap your 8s for a 9s shifter, then that's made for 8s shifting with your RD.
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Old 10-03-14, 06:41 PM
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I always have to bring this up...

I had DA 6 speed shifters pulling an XC Comp RD on a 5 speed Suntour Perfect freewheel. It actually worked perfectly. I was shocked.
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Old 10-03-14, 06:50 PM
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I always heard that DA stuff wasn't easily paired with pretty much anything other than DA. Either way, its generally out of my range anyway.
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Old 10-03-14, 07:09 PM
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I believe 9spd 7700 shifts 8spd 7400.The actuation ratios match.Shimano techndocs lists the 7700
shifters as 9 or 8spd.
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Old 10-03-14, 08:42 PM
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Originally Posted by blamester View Post
I believe 9spd 7700 shifts 8spd 7400.The actuation ratios match.Shimano techndocs lists the 7700
shifters as 9 or 8spd.
Yes , same cable pull. Nine speed Ultegra usually is a lot cheaper to source also.
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Old 10-03-14, 10:17 PM
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or just run it in friction mode and everything will work fine. i got tired of being a hair out of alignment all the time. went friction, total smoothness, never going back to indexed.
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Old 10-03-14, 11:22 PM
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Originally Posted by Antieverything View Post
or just run it in friction mode and everything will work fine. i got tired of being a hair out of alignment all the time. went friction, total smoothness, never going back to indexed.
I agree totally. Smooth, quiet .reliable. You can use any wheel 6,7,8,9 or 10 speed and
they will all work.
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