Originally Posted by
FlashBazbo
My experience is radically different than yours. In fact, it was my dealer who showed me the problem in the first place. Then, he demonstrated it. Then, I experienced it for myself. It cost him a sale -- and he knew it would cost him the sale. (I admired him for bringing it to my attention. I would not have discovered it in a normal test ride.)
HOWEVER, I only did a test ride after a few minutes of orientation from the dealer. Let me say that, although I'm not entirely convinced that this is a myth (after all, I've experienced it), I am willing to doubt my dealer's knowledge of the shifter. PERHAPS he shifted it wrong and taught me to shift it wrong. Both of us got an upshift when we intended a downshift. Judging by your post, we needed to push the lever BEYOND the normal downshift point in order to safely non-shift.
But . . . I guess that leads to another question: Why should you need instructions on a shifter?
And it seems that an inadvertent upshift is still very possible -- just not entirely certain.
I suspect the dealer's demo bike wasn't setup correctly. If you don't click the brifter to the point of the smallest cog and connect the cable to the RD, you can get that result. I found it hard to know when the brifter is in the right "click" when it is disconnected.
After riding the SRAM group for some time, I find it difficult to understand why I have to think about which lever to use to upshift or downshift when I got back to my other Shimano equipped bikes. Change is good.