Updated Gear Ratios: Comparing SRAM and Shimano’s 1x Drivetrains with XTR M9000

Now, factory’s must invented a rear cog of 44 for the new xtr…

Can some explain to me for XX1 what 3.200 for 10/32 ring stands for ? What it measures ?
Thx

If people really don’t know:

The numbers show wheel revolutions per crank revolution. 32×10 with a gear ratio of 3.2 means that for each crank revolution, the rear wheel will make 3.2 revolutions.

what are gaers?

the wheel size plays an important part in this. Personally I prefer a Gear Inch Chart instead.

basically shows what Shimano essentially said: They consider 1x to be the strict purview of elite riders that can handle a taller gearing, especially for the 29r crowd (due to not allowing a 28t front ring.) I would respectfully point to the growing surge of frames with no option for a front derailleur as evidence that their viewpoint is, to put it mildly, anachronistic.

SRAM thinks that 1x drivetrains are suitable for all but the most specialized MTB disciplines, and the groundswell of frame designers who are taking advantage of the freedom to design their suspension without having to make allowances for FD mounting agree.

I am surprised how big of a difference the 10t cog makes on fast spinning. I have been running XX1 (I love it) but on some faster rides it is fairly easy to spin out. I know if I wanted to go XTR, I would need a 2×10 setup to descend as fast as I wanted and to still be able to climb at a fast pace. As for the 40t, I could probably manage, but the 42t has been wonderful for my riding style and has been plenty manageable for even the steepest climbs .
For this reason XX1 suits my needs much better, that way I have a much bigger ratio top and bottom for descents and climbing, without having weight, clutter and frustration of a FD.

Sorry Pete, can you explain why these are meaningless? they look like a fairly meaningful comparison to me.

didi, what is this “non-standard hub” you speak of. perhaps you are referring to the driver body SRAM dared to change. driver bodies are not hubs.

groghunter what do you mean “29er crowd not being able to run a 28t cog”? I have an Enduro 29 and am currently running a 30t narrow-wide ring up front and a 10spd cassette with a 42t cog. Everything works great.
I don’t want to convert to SRAM and this cassette will allow me to do that. The catch is that if I want to run a 28t ring up front I’ll need to buy cranks that support direct-mount like RaceFace Next SLs.

not all, but the majority of 1xsetups could not ride at least 25% of sections that my buds and i ride. Unless you are a single speed elite rider, give up bro. 1×10/11 is simpler which i am all for, but if you’re unable to ride/hang at least a hand full of sections, whats the point?

Shimano is losing touch with the MTB market. Look around, the average mountain biker is a lot different than they were 20 years ago. 10 minutes at any trail head and you’ll see it’s fat guys with 30lb camelbaks that ride for 45 minutes at a time, that’s why 1x stuff sells. That and good marketing and magazine/web PR. Sure, a lot of fast racers use it but YOU are not them.

I would seriously doubt that anyone will be able to successfully mix Shimano and SRAM’s 11 speed chains and cassettes. The cassette spacing for SRAM’s XX1 and XO1 is pretty close to 10 speed mtn spacing, which is why you can get away with using a 10 speed chain. The XTR 11 speed cassette will work on a pre-existing 10 speed free hub which means they’ve crammed 11 cogs into about the same space as a 10 speed cassette. So the Shimano 11 speed chain would be much narrower than the SRAM 11 speed chain. The days of cross compatibility are ending.

Jeb…….kinda nailed it. Though my 26×42 1X works just fine for those 3hr rides on the weekends.

Because, Peter Verdone, people read this blog.

Nobody cares that you ride a singlespeed….still. Trust me. http://tinyurl.com/mobys48

Oi!, for those above not yet up to SPEED.
1x gives less chain wear, less chainsuck, less weight, less dirt collection, less hassle.
The 10 tooth gear makes a big dif to the ratios, very useful.
So, the 11-40 Shimano is really not close to the 10-42 SRAM, for a 1x setup. They would need at least a 44 to offset the larger front chainring needed for higher speeds.
The problem on the 10-42 cassette is the small amount of thread holding the cassette on the freewheel body, it needs copper slip and regular maintenance otherwise it squeaks and binds up. Otherwise a fantastic and very longlasting cassette.

I am using “xtr shifting setup with xtr cass.” and XX1 chainring/crank. Works like a boss 🙂

The people claiming 10T vs 11T is meaningless… you’re not very good at math.

10T is 9% lower than 11T. About the same as a 38T vs 42T.

SRAM 10-42 – 420% range
Homemade 11-42 – 382% range
Shimano 11-40 – 364% range

Whether you want/need/care about the extra range is another story, but the 10T certainly makes a difference.

golly those percentage numbers sure do imply a huge difference in going 25mph on pavement or whatever

I thought the small gears on the cassette were the first gears to wear out in a drivetrain? Why would you want to buy a super expensive cassette that will wear out faster when you can go 2×10 and get more range while paying half as much? I don’t get it. I know my Sram front derailleurs all suck but Shimano is fairly quick to shift.