9 speed rear, triple front, FSA claims only 10 speed cassette can be used?
Hello all... It's been a long time.
I'd like to swap out my current double chainring set-up, which is a FSA 46t/36t, with a FSA triple 42t/32t/24t. I have a Shimano XT M770 9-Speed Cassette and Shimano 9 speed bar end shifters. I use friction shifting in front and indexing in the rear. I'm aware of chainline and it's importance. I'm also aware I might have to swap out my front derailleur (it would remain friction).
I called FSA to get info about the swap; FSA claims their "42t/32t/24t SUPER TYPE CHAINRINGS FOR SL-K BCD 104/64MM triple" configuration will only work with a 10 speed rear cassette.
I'm skeptical... I don't see why it wouldn't work. Am I forgetting something?