I'm realizing that on my current setup on my Firebird that
I only use the top 3 cogs in the rear-goes to 36-
and the same in my big ring.So right now I'm running a 9 speed 12X36 shimano cogset with
a 32 tooth large ring and 26 tooth small in the front.
And I only use the top 3 cogs in each-the easiest ones.
I'd like to get rid of the front derailleur entirely and
just have a single ring in front. It would be either a 30 or a
28. THe thing is , though, is that in order to have low enough
gearing for steep hills I would need a 38 or 40 as the biggest
cog in the rear. Is there anybody that makes a cogset like that ?
The new 1x11 from Sram has a 40 or 42 in the rear but it is crazy expensive. You'll probably just have to try the 12-36 with a 30 or 32 and see how it goes.
I'm in the process of converting my 3x9 drivetrain to 1x10. I did 99% of my riding in the middle 32T ring, but occasionally dropped to the 24T inner ring and the largest cog on my 11-32T cassette for sustained, extremely steep ups.
My single-ring setup will still feature a 32T chainring, but I'll be running an 11-36T cassette. The 1x10 granny won't be quite as low as the 3x9 version, but it should be very, very close because 2x1 (middle chainring, largest cog) in the old setup felt equal to about 1x3 (smallest chainring, third-largest cog). Again, I'm gaining slightly more than a gear on the low end by going from a 32T max cog to a 36T max cog.
Don't know for sure because the trails here in Idaho are still too soft/snowy to ride. Nevertheless, a 42T granny coupled with a 28T chainring seems like overkill.
Also, even if it seems brutal at first, your legs will come around if you stick at it.
I only use the top 3 cogs in the rear-goes to 36-
and the same in my big ring.So right now I'm running a 9 speed 12X36 shimano cogset with
a 32 tooth large ring and 26 tooth small in the front.
And I only use the top 3 cogs in each-the easiest ones.
Just use a 26 in the front. If you only *ever* use the easiest 3 cogs (28, 32, and 36), use the 26T for 26x36T in the rear, and learn to shift up to 26x12 for flat. 26x12 is faster than the 32x28 that you normally use. 26x12 is also faster than 32x16 (gear #7 in the rear for you).
Instead of using only 3 gears in the back and flipping the front derailleur, you can use all 9 gears in the rear. Try that first. Then you can decide.
Get a spiderless crank or a BMX crank and get a 26T ring.
I have been doing a lot of research lately on 1x setups and have to say they are a growing revolution in the MTB world. Sram's XX1 is set up in a way that gives you a lot of range! Yes you will not have the same advantages of a 2x system when climbing, but if you know the area you are going to be biking, Sram made it super simple to change the size of the front chainring to a larger or smaller size. I know that I am going to be running the XX1 on my set up I am building, but I am going to wait will more companies have rear hubs that will fit the 11 ring cog.
6 months ago I started toying with the idea of going 1X9. I was running 22/34 front and 11/34 rear. After a few weeks of trying to ride in the 34 front, I started getting discouraged thinking I needed the 22 also. I finally said "screw it" and took the small ring off thinking I would push until I was strong enough to pedal it. I quickly realized to make do with what I have and now I ride it up everything I used to use the granny gear on and my riding has gotten faster and stronger. Put it in the front middle gear for a couple weeks and make yourself stay there, you will be surprised at what you can do (it may suck at first, but give it a solid couple weeks).
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