1x11 conversition using my 2x10 crancks

[Bruce D]

Hi.

 

Sorry may be a stupid question, converting 2x10 too 1x11 would my 2x10 cranks work?

[PeterF]

Yes, in most cases.  You want a crank that can take a 104bcd chainring.

[Wannabe]

Yes, in most cases.  You want a crank that can take a 104bcd chainring.

 

Why only that one? 

[Captain Fastbastard Mayhem]

Hi.

 

Sorry may be a stupid question, converting 2x10 too 1x11 would my 2x10 cranks work?

Yes. Using my 2x10 slx crank on my 1x11 setup. No problems. 

[Bruce D]

Thank you, will give it a go.

[JacBrand]

Why only that one? 

That is the diameter of the chainring bolts. What ever ring you use must fit the crank's bolt spacing

[PeterF]

Why only that one? 

Because there are more chainring options for the 104bcd cranks.

[popcorn_skollie]

Why only that one? 

 

Because there are more chainring options for the 104bcd cranks.

 

The BCD may be irrelevant for the intended purpose but still a valid point when you consider that some of srams 2x10 cranks were pretty useless if you wanted to go 1x.

 

There's a chance OP might have such a crank. If he does. It would be best to change. If he already has 104bcd crank then he could just keep it.

[Rich990]

^ would that include sram XO carbon cranks?

Got em on my new bike and it's been converted to 1x11 and the chain line seems too favor the smaller end of the cassette

[PeterF]

^ would that include sram XO carbon cranks?

Got em on my new bike and it's been converted to 1x11 and the chain line seems too favor the smaller end of the cassette

It is actually the old SRAM XX cranks with 120 bcd that are a problem as I don't think that you can run anything smaller than 36t on them.

[Wannabe]

Nobody asked what cranks the OP are currently using.

On my X9 cranks, I could just remove the spiders and use a direct mount Chainring.

Hence my question...

[Davey Crocket]

if u considering an oval ring, go to evo cycles and order a rotor q ring with sram 1x spider. fits perfectly.

[splat]

Yes. Using my 2x10 slx crank on my 1x11 setup. No problems. 

 

Did you need spacers to get the chainline right?

And did you need bolts, or did you use the old/original ones?

[Captain Fastbastard Mayhem]

Did you need spacers to get the chainline right?

And did you need bolts, or did you use the old/original ones?

used my original ones, as there was only ever one chainring on the 104bcd mount. Not like a 3x where you have 2 rings on the outer mounting plate. 

 

And no, but I should. It isn't optimal at the moment, but I'm lazy... Only really an issue in 1st & 2nd and then a 3-4mm spacer should do the trick. 

[Quagga]

It is actually the old SRAM XX cranks with 120 bcd that are a problem as I don't think that you can run anything smaller than 36t on them.

 

I am currently running a 32T oval on my 120 x 80 bcd 

 

Garbaruk and amberbikes makes a chainring, and a friend of mine in CPT 

[PeterF]

I am currently running a 32T oval on my 120 x 80 bcd 

 

Garbaruk and amberbikes makes a chainring, and a friend of mine in CPT

 

There are always workarounds, but how is your chainline?