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Let's talk Crankset Chainring spacing between 10s and 11s...

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Let's talk Crankset Chainring spacing between 10s and 11s...

Old 06-22-16, 10:33 AM
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Originally Posted by tregorpower View Post
I have recently bought a 11-speed crankset (SRAM RED 22 GXP 53/39) ; the rear derailleur (SRAM Force WiFli) and the cassette are 10-speed components.
Shall I mount a 10 or 11 speed chain? Which would you advise, which would work best?
NB I had to change my crankset initial 10-speed for an 11-speed one because the first was much more affordable than the latter...
Match the chain to the cassette.
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Old 06-25-16, 03:29 AM
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Originally Posted by Campag4life View Post
I read your post and yes a 1mm might matter...but not that can't be adjusted out with correct front derailleur set up which eluded you. Only my opinion.

I personally don't believe 1mm matters in the least and I have owned different combinations of 10s and 11s cranks with 10s and 11s groupsets...in fact do currently....own Campy 10s UT crank with Chorus 11s groupset and 11s Shimano 105 crankset with Campy 10s Centaur groupset.

I don't buy that 1mm makes much of difference in getting the chain stuck in particular. Reason I believe it got stuck in your instance is...you didn't have the front derailleur set up properly...inboard stop was too tight and shift from big chainring to small chainring wasn't abrupt enough...a languishing and not deliberate shift would precipitate this.

My counterpoint.
Fully agree with your thoughts Campag4life, on making certain that the front derailleur is set up correctly, on a mechanical groupset, but what I feel you have overlooked is that the bike I was working on is Di2 which is a whole new ball game. Believe me, I know how to set up a mechanical front derailleur correctly and also on Di2 having set up countless units over the past few years. The problem with the front derailleur on Di2 is that the distance to swing the chain from the big to small ring is electronically preset to match the chainset relating to the derailleur speed and in my case, an 11 speed derailleur, unsuccessfully trying to match to a 10 speed chainset. This swing distance is set at the factory to cater for the thinner chain and chain rings being closer together than on my particular 10 speed set. As far as I am aware, this preset cannot be altered and whereas on a mechanical set up you are able to adjust the derailleur cable tension to allow the chain to swing over further and drop accurately onto the small ring, Di2 has no such adjustment. Besides height adjustment, there are the 3 standard adjusting screws, Inboard stop, Outboard stop and Angle and all were set perfectly. The shifting was always attempted at high cadence on a bike stand so there was no languishing either during gear changes as you had suggested.
The proof being in the eating, after fitting the new, slimmer 11 speed chainset, the chain dropped from the big to small ring perfectly without any other adjustment to the derailleur. To reiterate my initial post, not all 10 speed chain sets have the same ring spacing and when dealing with Di2 systems, you may get away with some 10 speed chain sets if the ring spacing is small enough, but as in my case, just 1mm can make all the difference.
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Old 03-07-19, 12:00 PM
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I know this is an old thread, I have a specific question:

I'd like to consider using a ten speed Campagnolo crankset with an 11 speed Athena drivetrain. Will it shift properly? Any other performance issues to worry about? The components are going on a rim brake road bike with 130mm hubs.

I know that Shimano 10 and 11 cranksets are cross compatible. I'm running a CX 50 ten speed Cyclocross crankset on my 11 speed gravel bike. However, it's less clear is Campagnolo ten speed cranksets are forward compatible.
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