Originally Posted by
Happy Feet
Sorry, stem shifters. I call them turkey levers because they look like a pair of turkey drumsticks.
They are a good alternative to bar ends for people rebuilding 7 speed drops. Otherwise it's Shimano 8 speed BE's and hoping they index or you have a very expensive set of friction shifters.
https://www.amazon.com/product-reviews/B001CZQRW2
A friend of mine uses 8 speed Shimano bar end shifters on his 7 speed system. He told me that 7 and 8 have the same cable pull.
But, according to this website, my friend is wrong, not the same cable pull, but quite close to the same (2.8 and 2.9mm) so that is probably why they work on his bike.
Art's Cyclery Blog » Science Behind the Magic | Drivetrain Compatibility
Thus, if the system when on the middle sprocket on the 7 speed is adjusted right, the derailleur when on the innermost and outermost sprockets would only be off by 0.3mm.
He is using a Suntour derailleur, maybe that helps too, he said the Suntour uses the same cable as Shimano derailleurs but if they are exactly the same I suspect that was just luck.
On the rando style bike I built up last winter, I am running a Campy 10 speed brifter for the rear with Shimano 8 speed XT derailleur, XT M752 freehub and Sram 8 speed cassette. The mix of components works great. You will note on the tables from the link I cited that Campy 10 and Shimano 8 speed both have the same 2.8mm cable pull per gear.