M8000 XT

User avatar
Duck!
Expert
Posts: 6209
Joined: Tue May 21, 2013 8:21 pm
Location: On The Tools

M8000 XT

Postby Duck! » Thu Apr 16, 2015 11:15 am

Overnight Shimano have released details of the new Deore XT groupset, due for launch later this year.

Image

True to past form, it draws a lot from XTR that was introduced last year. It's 11-sp, with options of 1x, 2x and 3x cranks. In 1x form, it also has the option of an 11-42 cassette alongside the 11-40 range (which remains for 2x & 3x variants) introduced with XTR.

At this stage there is no word of a Di2 variant.
I had a thought, but it got run over as it crossed my mind.

User avatar
thecaptn
Posts: 1622
Joined: Wed Mar 17, 2010 8:28 pm
Location: Deloraine Tasmania

Re: M8000 XT

Postby thecaptn » Thu Apr 16, 2015 11:28 am

Pretty cool, would be useful for touring setups. Now all they need to do is create some compatible drop bar brifters to suit.

march83
Posts: 597
Joined: Mon Apr 29, 2013 10:41 pm

Re: M8000 XT

Postby march83 » Thu Apr 16, 2015 11:38 am

yay for affordable 11sp pizzas.

visually, those brakes look very similar to the current gen.

can someone explain the rationale behind the offset bolt centres on the crankset/chainrings? seems like it's going to trickle down through the entire range now.

Calvin27
Posts: 1549
Joined: Sat Feb 09, 2013 5:45 pm

Re: M8000 XT

Postby Calvin27 » Thu Apr 16, 2015 11:40 am

march83 wrote:can someone explain the rationale behind the offset bolt centres on the crankset/chainrings? seems like it's going to trickle down through the entire range now.


It stops you buying RaceFace, Wolftooth and blackspire NW chainrings.

But yeah this is great for MTBrs! I'll probably just aim for the cassette, RD and shifter.
Specialized Secteur
Kona Hei Hei
Cannondale Synapse
Hillbrick Pista
Ebike :)

User avatar
Duck!
Expert
Posts: 6209
Joined: Tue May 21, 2013 8:21 pm
Location: On The Tools

Re: M8000 XT

Postby Duck! » Thu Apr 16, 2015 1:38 pm

march83 wrote:visually, those brakes look very similar to the current gen.

As they say, if it ain't broke, don't fix it. As with XTR, brakes are an evolution from the current model.
I had a thought, but it got run over as it crossed my mind.

User avatar
rodneycc
Posts: 2702
Joined: Mon Oct 14, 2013 1:50 pm
Location: Melbourne Eastern Suburbs, Victoria

Re: M8000 XT

Postby rodneycc » Thu Apr 16, 2015 3:32 pm

11-42! The cassette is going to be as big as the whole wheel soon! :-) They are just massive on the new mtbs
(I guess thats what you gotta do with just one chain ring)
2013 BMC TM SLR01;2013/14 Bianchi Inf CV
2013 Lynskey Helix;2013 XACD Ti Di2
2013 Giant TCR Adv SL1;2014 Giant Defy Adv SL

User avatar
bychosis
Posts: 4942
Joined: Sat Jan 14, 2012 1:10 pm
Location: Lake Macquarie

Re: M8000 XT

Postby bychosis » Thu Apr 16, 2015 3:52 pm

Either that or snack on concrete. 32 upfront and 34 out back on 26" is enough for me, have considered going to 34 or 36 up front, which might mean it's nice to get a few more teeth on the back.
bychosis (bahy-koh-sis): A mental disorder of delusions indicating impaired contact with a reality of no bicycles.

User avatar
Duck!
Expert
Posts: 6209
Joined: Tue May 21, 2013 8:21 pm
Location: On The Tools

Re: M8000 XT

Postby Duck! » Fri Apr 17, 2015 12:41 pm

march83 wrote:Can someone explain the rationale behind the offset bolt centres on the crankset/chainrings? Seems like it's going to trickle down through the entire range now.

If the reasoning is the same as for doing it to the most recent road cranks, allegedly it's due to the indivudual arms being subject to different amounts of force at various crank arm angles. Or something like that.
I had a thought, but it got run over as it crossed my mind.

march83
Posts: 597
Joined: Mon Apr 29, 2013 10:41 pm

Re: M8000 XT

Postby march83 » Fri Apr 17, 2015 3:50 pm

makes sense i suppose - in the power portion of the downstroke you will have 3 bolts supporting the chainring instead of 2. marginal gain, but a gain none the less...

edit, i understand the cassette will fit on a traditional 10sp carrier - can anyone else confirm?

Calvin27
Posts: 1549
Joined: Sat Feb 09, 2013 5:45 pm

Re: M8000 XT

Postby Calvin27 » Fri Apr 17, 2015 3:53 pm

march83 wrote:edit, i understand the cassette will fit on a traditional 10sp carrier - can anyone else confirm?


I asked on rotorburn and everyone seems to think so.
Specialized Secteur
Kona Hei Hei
Cannondale Synapse
Hillbrick Pista
Ebike :)

User avatar
Duck!
Expert
Posts: 6209
Joined: Tue May 21, 2013 8:21 pm
Location: On The Tools

Re: M8000 XT

Postby Duck! » Fri Apr 17, 2015 4:55 pm

It was confirmed with 11-sp. XTR last year. The enormous diameter of the inner sprocket means there's no spoke interference, so the sprocket is dished back to gain the extra cassette width, leaving the core of the cassette the same as 8/9/10-sp. As a result, wheel stiffness isn't affected because it's not necessary to shift the right flange inboard to fit a longer freehub, as is required with road 11-sp.
I had a thought, but it got run over as it crossed my mind.

User avatar
Duck!
Expert
Posts: 6209
Joined: Tue May 21, 2013 8:21 pm
Location: On The Tools

Re: M8000 XT

Postby Duck! » Wed Jun 10, 2015 1:50 am

Saw these new bits in the flesh at the Shimano dealers' launch. Not a great deal to add from what's already been revealed. Yes there is that monstrous 11-42 cassette for 1x drivetrains, and it is not compatible (allegedly) with XTR derailleurs. The rear derailleur, as with M9000 XTR is now only available in Shadow+ clutched form. The clutch mechanism is significantly upgraded over M785/6 10-sp. XT, and is much closer in performance to XTR. Clutch tension is now externally adjustable, so it's no longer necessary to remove the dust cover to get to the adjustment - much easier to tweak on the trail if required.

For those (like me) who still like multiple chainrings, there is a huge array of front derailleurs to pick through: High clamp. low clamp, high direct mount, low direct mount, top swing, bottom swing, side swing, 2x, 3x..... about a dozen different front derailleurs!

The brakes have had some minor attention; the calipers are an evolution of the highly-rated M785 units; the only real change is that they've been slimmed down a little, removing material from where there may have been a bit much. Pad options remain resin or metal compounds, with or without cooling fins. The levers have come in for a bit more attention. The Servo Wave cam, which varies the master piston stroke through the lever's travel, has been reprofiled so it's a much smoother action than the previous generation, which was criticised for being rather aggressive & jerky. Cosmetically, they're a little slimmer than the previous model.

Shifters are available in three mount options, bar clamp, I-spec-B to pair with older (M987/988/785B/675) brake levers, and I-spec II to pair with new XTR & XT levers. I-spec-B only offers lateral adjustment of the shifetr pods, while I-spec II also allows independent rotational adjustment of brake & shift levers. The shift feel is light, yet firm and precise, giving definite feedback when it's hit the next index point, with a considerably shorter stroke than previously.

At this stage there is still no mention of Di2 filtering down to this level.
I had a thought, but it got run over as it crossed my mind.

User avatar
santacruzscott
Posts: 156
Joined: Sun Aug 14, 2011 10:01 am
Location: Hobart , Tasmania

Re: M8000 XT

Postby santacruzscott » Sat Jan 30, 2016 12:12 am

Loving it :wink:

Image

Image

Goodbye front derailleur :D

User avatar
Duck!
Expert
Posts: 6209
Joined: Tue May 21, 2013 8:21 pm
Location: On The Tools

Re: M8000 XT - Now with Di2!

Postby Duck! » Fri Apr 15, 2016 2:01 pm

Just announced overnight is new for 2017 XT Di2. Featuring all the tricks from XTR which has been out for nearly two years now, it's really through the use of different materials that brings it to a (relatively) more affordable level. However, it does bring one new trick to the party, which is also compatible as an upgrade to XTR: wireless connection via Bluetooth to the E-Tube software for system customising. This will enable tweaking at the trail via a suitable-equipped laptop,tablet or smartphone. Tricky.
I had a thought, but it got run over as it crossed my mind.

Who is online

Users browsing this forum: No registered users