Crankset 10 vs 11 speed compatibility

[sethpo]

Someone is selling a Shimano 5800 crankset w/ BB for a great price on the DC bike parts FB group that would be sweet for my new build but the 5800 is 11-speed and I’m running 10 speed on everything else on the drive train. I’ve seen a few things (amazon comments and one mention in one article) saying the 5800 crank/chainrings are 10-speed compatible but I really can’t find anything I’m super confident about despite diligent Googling.

Does anyone know about running a 5800 11-sp crank/rings w/ 10-speed chain and cogs?

Thanks!

[Harry Meatmotor]

They’re compatible. In other words, you can run a shimano 11 spd crank/chainrings with a 10 spd drivetrain. Obviously you’ll want to keep running a 10 spd chain on a 10 spd cassette.

[sethpo]

@Harry Meatmotor 103555 wrote:

They’re compatible. In other words, you can run a shimano 11 spd crank/chainrings with a 10 spd drivetrain. Obviously you’ll want to keep running a 10 spd chain on a 10 spd cassette.

Woohoo. Thanks. I was planning on keeping my FSA Gossamer crank but this 105 5800 should be a nice upgrade at a great price and in silver is going to look so sharp w/ matching silver fenders and headset and midnight blue frame.

[ATTACH=CONFIG]7327[/ATTACH]

This is going to be a very exciting bike week for me.

[Harry Meatmotor]

@sethpo 103563 wrote:

Woohoo. Thanks. I was planning on keeping my FSA Gossamer crank but this 105 5800 should be a nice upgrade at a great price and in silver is going to look so sharp w/ matching silver fenders and headset and midnight blue frame.

[ATTACH=CONFIG]7327[/ATTACH]

This is going to be a very exciting bike week for me.

Cool – as with any new crank (regardless of whether you’r mixing and matching 10/11 spd) you’re going to want to re-setup the front derailleur, too.

[sethpo]

@Harry Meatmotor 103683 wrote:

Cool – as with any new crank (regardless of whether you’r mixing and matching 10/11 spd) you’re going to want to re-setup the front derailleur, too.

Yup. I’m moving all non-frame components from existing bike to new frame. The chainstay is 460mm up from 425mm so I anticipate needing to add a link. I have the bottom bracket tool and that seems simple enough. My biggest concern is setting the crown race on the fork (I’m going to try the PVC pipe trick) but if I get stuck I’ll bring that to the LBS for help. Everything else seems very straight forward. Thanks again!

[DismalScientist]

@sethpo 103563 wrote:

[ATTACH=CONFIG]7327[/ATTACH]

Well, at least you have the only tool you need for bicycle maintenance. :rolleyes:

[sethpo]

@DismalScientist 103695 wrote:

Well, at least you have the only tool you need for bicycle maintenance. :rolleyes:

Well, to be honest I borrowed the BB tool from Ryan H. and am going to hit up my neighbor for the PVP pipe and a rubber mallet. I do have a set of allen keys though so it’s all good.

[Jason B]

Just curious, is the opposite true? Will a 10 speed crank work on an 11 upgrade (shifters, RD and wheels)? Shimano

[Harry Meatmotor]

@Jason B 103702 wrote:

Just curious, is the opposite true? Will a 10 speed crank work on an 11 upgrade (shifters, RD and wheels)? Shimano

Yep! Just use a 11 spd chain and it’ll be fine.

As I said above, you’re going to want to re-setup the front derailleur regardless. The only time that 10 speed/11 speed compatibility issues crop up are between SRAM 10 and SRAM 11 – the “new” 11 spd Yaw front derailleurs are supposed to be only compatible with the 11 speed 4-arm cranks due to shift ramps/pins, etc. Never tried a SRAM 11 spd crank with a 10 spd drivetrain or vice-versa, but my gut says it’d work well enough so as not to be an issue.

[Author]

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