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It's really just a general point of interest for me now, I'm not looking to switch or "Hack" any parts any time soon, but I still want to know.
There's been lots of conjecture/bullshit on what will/won't work since Shimano pushed out their Dynasys gubbins, everyone is now fully aware that it uses a different cable pull ratio, but nobody seems able to put a number against what that actually is.
we know that 7/8/9 speed were all "2:1" (Which was actually 1.7), and I've read unsubstantiated reports that dynasys is actually the same as older Dura Ace (1.9?)...
It's the only piece of the puzzle missing so far as I can tell, and Shimano have been careful not to put any numbers in the public domain...
I've not got a Dynasys shifter to measure cable pull from for myself at present, has anyone had a pop at measuring/working it out themselves?