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Old 12-03-10, 01:41 PM   #1
Aerodee80
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FYI: Unfavorable change to the DA 7900 STI Levers

I noticed that the new levers are more sensitive to misshifting/slipping to a smaller cog when you slightly touch the top paddle.


I puchased the new shifters online to replace my crashed levers. My old levers did not do this unless you obviously press the top paddle...so it has more tolerance.

I have verified this with my friend's 2010 and earlier bikes that they are not sensitive to this, as well as new 2011 bikes at the LBS and they are more more sensitive to this issue.

I have contacted the rep at Shimano and they are not aware of this change. I guess its time to change the way you shift especially when you are at your final lap at the race.

I guess Ill say hello to SRAM Red if money is around.
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Old 12-03-10, 01:54 PM   #2
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Maybe it's a cable thing.
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Old 12-03-10, 02:56 PM   #3
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Even when its not installed, the new shifter itself still slips versus the old detached shifter.
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Old 12-03-10, 03:25 PM   #4
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Quote:
Originally Posted by Aerodee80 View Post
I guess Ill say hello to SRAM Red if money is around.
The proper response is to say hello to Di2. You're not following the proper Shimano protocol.
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Old 12-03-10, 03:46 PM   #5
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After moving to Rival, I doubt I will ever buy a Shimano shifter again. I <3 double tap.
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Old 12-03-10, 08:32 PM   #6
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Bull.

Period. We've sold about 3 billion bikes equipped with new generation shimano 7900/6700, in addition to my personal bike being equipped with it. Not a single problem like you describe. There is a dead zone on BOTH STI's before actual cable is pulled/released so you have

1) No idea what you're talking about
2) No idea what you're talking about

Go SRAM red if you want a front derailleur that doesn't shift. There's a reason why no pro's, even with a full red otherwise groupset bike rides a stock red front derailleur.

Last edited by operator; 12-03-10 at 08:46 PM.
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Old 12-03-10, 08:57 PM   #7
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Ultegra 6700 have a much narrow dead center versus the good old DA7900. So both 6700 and the new 7900 shifter are about as sensitive. I had checked plenty of examples from different LBS and fellow cyclist.

Its possible that your shifting fingers are more precise than mines. But Ill give this one last chance as I'm about to receive another set of DA 7900.
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