Sram AXS eTap Road Shifters with Eagle AXS MTB Derailleur?

Especially for light weight issues concerning cyclocross / touring bikes & parts.

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jbattermann
Posts: 39
Joined: Mon Feb 20, 2017 10:47 pm

by jbattermann

Hello there,

has anyone seen/read if the two new AXS systems (road & mtb) can be mixed? Sram Force 1x had 10-42 before & now eTap AXS 1x apparantly only goes up to a 36 cassette as far as I read.. which is actually quite a step back at first glance.. so I was thinking/wondering if one could get the new shifters/levers but use their MTB AXS derailleur in the back (what works with Shimano DI2 for example quite well).

-J

by Weenie


jbattermann
Posts: 39
Joined: Mon Feb 20, 2017 10:47 pm

by jbattermann

You can mix and match eTap road products with Eagle products. As a rule of thumb, however, it’s important to remember that the rear derailleur will dictate which chain and cassette you use. For example, if you’re using a road rear derailleur, you must use the Flattop chain. But you cannot use a Flattop chain with an Eagle rear derailleur.

If you want to run a 1X system with a lower gear range on your road or gravel bike, you’d need to use an Eagle AXS cassette and chain, but you can use an Eagle or eTap AXS crank or eTap AXS shifters. The eTap AXS shifters are compatible with Eagle AXS components, and you can even control the wireless dropper post using your eTap AXS shifters or blips.
Half way down at https://www.velonews.com/2019/02/bikes- ... axs_483097

jbattermann
Posts: 39
Joined: Mon Feb 20, 2017 10:47 pm

by jbattermann

.. aaand Sram replied to me support inquiry within a few minutes (!), too and updated their FAW pages: https://sram.zendesk.com/hc/en-us/artic ... railleurs-

.. so that's really nice!

moyboy
Posts: 375
Joined: Thu Aug 18, 2016 12:19 am

by moyboy

I saw in one of the videos a 3T exploro with 10-50 gearing and rear AXS mech with a 1x Red chainring at the front with drop bar shifters.... was wicked!

jbattermann
Posts: 39
Joined: Mon Feb 20, 2017 10:47 pm

by jbattermann

moyboy wrote:
Thu Feb 07, 2019 2:10 pm
I saw in one of the videos a 3T exploro with 10-50 gearing and rear AXS mech with a 1x Red chainring at the front with drop bar shifters.... was wicked!
:shock: https://launch.sram.com/en/axs/the-mullet-bike

moyboy
Posts: 375
Joined: Thu Aug 18, 2016 12:19 am

by moyboy

That's it.... come on.... that's wicked!

jbattermann
Posts: 39
Joined: Mon Feb 20, 2017 10:47 pm

by jbattermann

Oh I quite like it.. shame is, that individual components won't be available until a couple months after the release according to dealers over here.. so you can only pre-order/get the whole Eagle AXS groupsets for the time being & try to sell the crank + controller (probably with a loss).. oooor wait.

Bonesbrigade
Posts: 8
Joined: Fri Mar 24, 2017 2:06 pm

by Bonesbrigade

moyboy wrote:
Thu Feb 07, 2019 3:42 pm
That's it.... come on.... that's wicked!
The big question for me though is if you can do this with a larger chainring like a 46t - can the RD handle that kind of chainwrap and slack in the smaller cogs - it would also be a super long chain.

jbattermann
Posts: 39
Joined: Mon Feb 20, 2017 10:47 pm

by jbattermann

Bonesbrigade wrote:
Thu Feb 07, 2019 10:06 pm
The big question for me though is if you can do this with a larger chainring like a 46t - can the RD handle that kind of chainwrap and slack in the smaller cogs - it would also be a super long chain.
Yeah... I currently run my 1x 11s gravel bike with a 48t Chainring leaning towards 50T and 10-42 cassette in the back.. and the RD looks still ok in terms of stretching forwards, but not too much room left. I assume the MTB cages are a bit longer and therefore might take up a bit more chain slack but even though I asked Sram's support about the max chainring size, I haven't heard back, yet..

jbattermann
Posts: 39
Joined: Mon Feb 20, 2017 10:47 pm

by jbattermann

Bonesbrigade wrote:
Thu Feb 07, 2019 10:06 pm
The big question for me though is if you can do this with a larger chainring like a 46t - can the RD handle that kind of chainwrap and slack in the smaller cogs - it would also be a super long chain.
Max chainring size with 10-50 Eagle cassette is (only) 38t o.O (see https://youtu.be/rLRKzL6etIY?t=299 (the German Sram rep answers this exact question there)). Sooo - any after-market companies make smaller 12s & Eagle compatible cassettes.. something like 10-42/44/46 maybe?
Last edited by jbattermann on Fri Feb 08, 2019 1:13 am, edited 1 time in total.

Bonesbrigade
Posts: 8
Joined: Fri Mar 24, 2017 2:06 pm

by Bonesbrigade

jbattermann wrote:
Thu Feb 07, 2019 11:16 pm
Bonesbrigade wrote:
Thu Feb 07, 2019 10:06 pm
The big question for me though is if you can do this with a larger chainring like a 46t - can the RD handle that kind of chainwrap and slack in the smaller cogs - it would also be a super long chain.
Max chainring size with 10-50 Eagle cassette is (only) 38t o.O (see https://youtu.be/rLRKzL6etIY?t=299 (the German Sram answers this exact question there)). Sooo - any after-market companies make smaller 12s & Eagle compatible cassettes.. something like 10-42/44/46 maybe?
I don’t understand German but I’ll take your word for it!

spdntrxi
Posts: 2641
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

anyone know largest tire size (width) you can run with 2x, I heard battery location might be improved over eTap
1. 700c
2. 650b

NickJHP
Posts: 224
Joined: Wed Feb 14, 2018 2:22 am
Location: Canberra, Australia

by NickJHP

spdntrxi wrote:
Fri Feb 08, 2019 4:36 am
anyone know largest tire size (width) you can run with 2x, I heard battery location might be improved over eTap
1. 700c
2. 650b
I have 11s eTap on an Open UPPER frame, and I can fit a 700Cx38 or 650Bx48 and still have about 3mm clearance to the battery on the FD. So if they've improved the battery clearance you should be able to do better than that.

spdntrxi
Posts: 2641
Joined: Sat Jul 20, 2013 6:11 pm

by spdntrxi

NickJHP wrote:
Fri Feb 08, 2019 5:13 am
spdntrxi wrote:
Fri Feb 08, 2019 4:36 am
anyone know largest tire size (width) you can run with 2x, I heard battery location might be improved over eTap
1. 700c
2. 650b
I have 11s eTap on an Open UPPER frame, and I can fit a 700Cx38 or 650Bx48 and still have about 3mm clearance to the battery on the FD. So if they've improved the battery clearance you should be able to do better than that.
I dont have an upper, but considering it because it can do 50mm+ Good to know thanks. What's the size of your front ring ? and I wonder if it's gets worse moving down since 50 is the max front on a upper.

NickJHP
Posts: 224
Joined: Wed Feb 14, 2018 2:22 am
Location: Canberra, Australia

by NickJHP

Big ring is 42t.

by Weenie


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