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Help! I'm in need of the combined 'Shimano meets SRAM' experiences of the STW massive.
I'm trying to get a X.7 SRAM front mech to play nicely with a ca. 2003 Shimano LX shifter. Extensive googling says that this should indeed be possible, as does the SRAM product documentation. Both manufacturers supposedly use a 1:1 actuation ratio for their front mechs and shifters.
So imagine my surprise when I fit the SRAM mech today and the chain now shifts from the smallest chain ring to the largest in a single shift, skipping the middle ring entirely. It seems that the shifters are working on a 2:1 ratio. Can this be right? I'd assume the the internet was just plain wrong, except that I have a set-up on my other bike with a SRAM Xgen front mech cooperating with a Shimano XT shifter.
Much jaw-droppage in the shed this afternoon. Has anybody hit this one before?
Never had a problem like that before. The only thing I can think of is perhaps the 'hook' for the middle gear is worn and you are changing all the way without knowing it? The shifter is quite old.
Nothing odd like a bottom pull mech set up as top pull (can't see why this would be possible/possible etc - just a thought).
Mech not set 'square' to the chainline (i.e. needs to swivel around seat tube)?
Thanks for your comments - it does sound like I've done something wrong. I will persevere with it a bit longer. At least it is supposed to work then!