[Fuzzwardo]

When running a 2x10 on a fatty, is the 38/24 or 36/22 pretty much the "norm"? I've been looking at Sram, Shimano and Raceface cranks. I did find a Raceface Turbine that had a 40/28 but am not sure that it is compatible with a fatbike. I am new to picking out my own components so bear with me if these sound like stupid questions. What do you guys think about a full XT build?

 

[RockyJo1]

Order a full build package from The bike man Fat bike store.

 

[sryanak]

I run a 2 by 9 with 36-22 in front and 11-34 in back. It works great and is a good range for a wide variety of terrain. Both of the other ratios would probably work.

 

[mtnbykr©™]

I run a 2x6 w/ 22-32 front and 34t in back. hilly up here in n. mn.

 

[SmooveP]

Some front derailleurs are specific to the number of chainring teeth, so make sure you pick the right one. I run Sram 2x10 with 36/22 and 11-36 out back. I like having low gears for when I need them. Almost all of my riding is in the woods, Northeast style singletrack with dirt, rocks, roots, etc.

 

[veloborealis]

2x9, 34/22, 11-34

Works great in the winter, but sometimes I find myself wanting a 36 up front in the summer.

 

[29Again]

Here is my Franken-gear setup:
Race Face 10-spd 24/36T chainrings
11-34T 9-spd SRAM cassette
2x, 10-spd, SRAM front derailleur made to work with my tooth count difference.
10-spd SRAM chain

I think the 24/36T offers the right mix for the semi-flat, single-track, snowy terrain I like to ride. The 24T gets worn down in the winter and the 36T catches up in the summer.