Comments on: SRAM Eagle 12 Speed: A Touring Bike Drivetrain With Only One Chainring Up Front? https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/ Bikepacking, Bicycle Touring, Equipment, Testing, Videos Wed, 27 Dec 2023 16:00:37 +0000 hourly 1 https://wordpress.org/?v=6.5.2 By: Jon Travis https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/#comment-4534 Fri, 09 Feb 2018 08:43:00 +0000 https://www.cyclingabout.com/?p=8128#comment-4534 I have a 1984 vintage steel road bike with a 28.6 mm OD seat tube and a braze-on for front derailleur with the cable routed from below the rear derailleur. I want to convert the bike to a gravel/commute bike. I want to run a 9-sp cassette (12-27) and a 44-32-22T triple. The shifters will be bar end (front friction, rear indexed). I have a 9-sp Ultegra (or 105) front derailleur that I could use, but those were designed for a 52T ring. Is there a mountain bike front derailleur that fits those small rings better and could clamp on my seat tube underneath the braze-on? Any other solutions? Thanks.

]]> By: Alee | CyclingAbout.com https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/#comment-3060 Thu, 16 Mar 2017 22:52:00 +0000 https://www.cyclingabout.com/?p=8128#comment-3060 In reply to Marc Yiú.

The M985 crankset should work fine with the M9000 gearing. The teeth that you require almost entirely depends on the type of terrain you normally ride. I generally recommend having gears for all occasions, so that’s a nice wide cassette and a large difference between the two front chainring sizes.

]]> By: Alee | CyclingAbout.com https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/#comment-3059 Thu, 16 Mar 2017 22:49:00 +0000 https://www.cyclingabout.com/?p=8128#comment-3059 In reply to Marc Yiú.

No, you cannot use the 12s chain with 11s gears.

]]> By: Marc Yiú https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/#comment-2996 Sat, 18 Feb 2017 00:38:00 +0000 https://www.cyclingabout.com/?p=8128#comment-2996 In reply to Marc Yiú.

And also can i able to use the luxury 12speed black of sram will it be able to work with my shimano xtr m9000 gears?

]]> By: Marc Yiú https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/#comment-2995 Sat, 18 Feb 2017 00:36:00 +0000 https://www.cyclingabout.com/?p=8128#comment-2995 Hi im a newbie her i got trek x caliber 8 and im planning to do some upgrades for my hardtail bike. Wich is shimano xtr m9000 and m9020 gears set. Will my xtr m9000 works with shimano xtr m985 crankset double? What size would i exactly buy and what numbers of teeth?

]]> By: Joe https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/#comment-1914 Wed, 06 Apr 2016 08:48:00 +0000 https://www.cyclingabout.com/?p=8128#comment-1914 In reply to Alee | CyclingAbout.com.

Hi,
I was not talking about popular belief but rather own experience. I have a modern mtb with 10 speed, a tourer with 9 speed, and two vintage mtbs with 7 speed. The difference in longevity in the 7 speed chains is outstanding. So much, that since my tourer has bar-ends with friction option, I’m considering to switch to 8 which uses the same thicker chain as 7.
Shimano took quite a while to move their mtb range to 9speed, and even longer to 10speed, even though their road range already had the technology and the testing done. And those companies don’t like to waste a sale opportunity so easily… It was just too fragile for rough use.

]]> By: Alee | CyclingAbout.com https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/#comment-1884 Wed, 30 Mar 2016 01:28:00 +0000 https://www.cyclingabout.com/?p=8128#comment-1884 In reply to Joe.

Hi Joe

Contrary to popular belief, narrower chains tend not to be weaker. There’s plenty of people on 10-11s chains getting the same wear as 6/7/8s. A few blogs have done their own testing and have found the same. Of course, 12s could well be a tipping point – we don’t know yet, and it’s probably unfair to speculate.

With regards to the crossing chains, I’d suggest the ‘average rider’ will get a better chainline through a 1x setup due to the chainline being optimised around the most common gears. Yes, in theory, you can get a better chainline with 3x. That’s assuming you’re using the first three cassette gears with your smallest front chainring, the middle five with your middle ring, and the lower three with your big ring. But in my experience, that’s not how the ‘average rider’ uses their gears! Most people will pick a front chainring and go from top to bottom of their cassette. Heck, I even find myself doing that sometimes when I’m distracted by something else (conversation, scenery, traffic, thoughts etc).

Alee

]]> By: Joe https://www.cyclingabout.com/sram-eagle-12-speed-touring-bike-drivetrain/#comment-1882 Tue, 29 Mar 2016 09:48:00 +0000 https://www.cyclingabout.com/?p=8128#comment-1882 When I got my first geared bike, an mtb, the “pros” in my cycling club said I should avoid “crossing” the chain (that is, running small chainring with small sprocket, or the other way around) to minimize wear in both transmission and chain. Being seen with a crossed chain was a sure sign of a “beginner’s mistake”.
Now manufacturers and bike magazines are trying to sell us that running a chain in the same chainring but in a 11t sprocket and 50t the next minute is perfectly fine, even though today’s 12 speed chain are way narrower (and therefore weaker) than the 7 speed chain on my mtb. To be really fair, they don’t say it’s fine, they actually say nothing at all regarding wear and longevity of components.
Nowadays the new bike “fad” is to have as few chainrings as possible, or even only one if possible. Nah, thanks, I’ll keep my triple and have my bike as versatile as it is at a fraction of the cost of these “improvements”.

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