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Currently running 3x9 on my hardtail and rebuolding it on a new frame.
Thought I'd take the chance to save some weight and simplify things and drop down to 2x9
I believe I can keep the same gear levers and just adjust the limiter, but I know next to nothing about gear ratios.
I'm currently running 11-32 on the rear and 44/32/22 up front.
Seems to have the right range for me - so what would I change to if going to 2x ?
Thanks
I have been using 36-22 + bash with a 34-11 on the back for years, fast enough on the roads/downhill and low enough to winch up lakeland climbs.
You're not going to get the same top end, so if you spend much time in the big ring and 3 smallest cogs thats what your going to lose. You could mix it up with a 40 outer and 26 inner if you can find one. Ive just gone back from 2x10 to 3x10, well actually upgraded rather than gone back as the bike came that way!
The maximum number of teeth difference a shimano 2x10 front mech can handle is 14 according to the docs, not sure about sram, b I think you could use your current 3x10 front mech and set the limit screw so it doesnt drop to the (non existant) granny.
2x9 doesnt really simplify things or save that much weight as you still have a front derraileur and shifter, you certainly wouldnt notice any performance difference front the weight loss, taking a shit before the ride would lose more.
1x9/10/11 is lighter but more restrictive.
I went from 3x9 to 2x9 and use an 11-34 cassette with 26/38 up front. I loose about 2 gears top end.
It doesn't save much weight, but I found that when running 3x9 with 44/32/22 up front I never used the very top gear and was often changing between 44 and 32.
I went to 2x9 by taking off the 44, and changing the 32 for a 36. Less front changes, same granny gears and I much prefered it.
As you only need a 36t middle and some short chainring bolts, it's easy to try.