Home > Bike Types > Mountain Bike

Turner Flux X Fair Wheel Bikes: Hydraulic Shift Project

39 Comments
Support us! Bikerumor may earn a small commission from affiliate links in this article. Learn More

Ever since hydraulic shifting popped up, we haven’t seen much done with it. That’s a shame since it seems to be an interesting system that promises a mix of lighter weight and consistent performance over standard cable systems. Which is what attracted the crew at Fair Wheel Bikes when they set out to build a new project Turner. They say their goal was to build an XC/Trail bike that was light but didn’t resort to any compromises in order to get the weight down. Starting with a new Turner Flux, the bike was built with the Acros AGE hydraulic system and a selection of light but durable parts to get the weight down under 23 lbs…

Starting with the drivetrain, the Acros AGE hydraulic kit makes up the rear shifter, rear derailleur, and the lines to operate it. Combined with a SRAM 10-42 cassette and a KMC X11SL DLC Black chain, the bike runs a typical 1×11 drivetrain.

The chain is propelled with a Race Face Next SL carbon crank and Race Face narrow wide chainring. Wheels are a custom build with ENVE M60 rims and Aivee Edition One hubs, all wrapped in Schwalbe Nobby Nic 27.5 x 2.35″ tires.

Magura was tapped for both the TS8 fork as well as the MT7 Trail brakes. All together, the build came in at an impressive 22.3 lbs (10.12 kg). Check out the full build list below.

  • Frame: Turner Flux 4.0 carbon
  • Fork: Magura TS8
  • Headset: Tune Bubi
  • Crank: RaceFace Next SL
  • Bottom braket: HSC Ceramic
  • Derailleur: Acros AGE hydraulic
  • Shifter: Acros AGE hydraulic
  • Chain: Kmc X11SL, DLC Black
  • Cassette: Sram 10-42
  • Rims: Enve M60
  • Spokes: Pillar Xtra Titanium
  • Hubs: Aivee Edition One
  • Thru Axles: Kcnc Low Profile
  • Pedals: Acros Aflat Titanium
  • Brakes: Magura MT7 Trail
  • Rotors: Ashima AiNeon
  • Handlebars: Box Trail 35mm carbon
  • Stem: Box Cusp
  • Grips: Kcnc Lockon
  • Seat: Bontrager Inform
  • Seatpost: Kcnc Ti Pro Lite
  • Seat Collar: FWB Carbon
  • Tires: Schwalbe Nobby Nic 2.35

 

 

Subscribe
Notify of
guest

This site uses Akismet to reduce spam. Learn how your comment data is processed.

39 Comments
Oldest
Newest Most Voted
Inline Feedbacks
View all comments
david
david
7 years ago

Is there a clutch on the rear d?

lovethebike
lovethebike
7 years ago

from bikerumor’s previous article: “It also gets a elastomer damping system inside the pulley cage pivot to keep the chain from bouncing. Not exactly a clutch, but same idea. The wound spring that’s visible here is the tension spring.” Beautiful bike and build!

chase
chase
7 years ago
Reply to  lovethebike

You mean exactly like the old Saint? As I recall. That didn’t really work at all which led to the clutch

chase
chase
7 years ago

I just don’t see the point. My concerns about some no name hydraulics as my drivetrain system far outweigh my concerns about Shimano DI2 and its small list of issues.
No clutch on RD, 42T max, save maybe 100g? No Dropper?
This thing is some nerds wet dream and should stay right where it will always be . In his garage.
That is a shame because the frame and wheels demand better.

Flatbiller
Flatbiller
7 years ago

So would it be much lighter than the XTR Di2 system I’m currently running, and just as smooth?

I’d rather swap out a battery in 10 minutes than tell my friends I’m gone for the afternoon because “I have to bleed my rear derailleur.”

myke2241
myke2241
7 years ago
Reply to  Flatbiller

I remember some reviews a while back saying to system was really nice but di2 is much nicer in terms of shifting. The system is probably about the same as SRAMs 1x drivetrains.

The stuff looks really fun to try tho!

Nunya
Nunya
7 years ago
Reply to  Flatbiller

Do you miss a lot of rides because you have to bleed your brakes? Or is it that hydraulics are ok for brakes just not for shifters. How many times have you had to bleed your derailleur? Do you know this to be a problem or are you just taking a guess about something you’ve no experience with? Personally I’d like to give it a go and see how they actually work.

Fert Reynolds
Fert Reynolds
7 years ago
Reply to  Flatbiller

It takes you an entire afternoon to bleed a hydraulic line?

Carlos
Carlos
7 years ago

Look closely, and there are a bunch of “almost” weight weenie parts…

Buy I am really interested in the hidraulic system….

bearcol
bearcol
7 years ago

I would rather see wireless electronic rather than hydraulic. That said, I’m pretty sick of snapping cables and would be willing to consider any alternative as long as prices are reasonable.

Ripnshread
Ripnshread
7 years ago
Reply to  bearcol

In all my years I have never seen a snapped cable…wtf?

Flatbiller
Flatbiller
7 years ago
Reply to  Ripnshread

I second your WTF. I would venture a guess that 99.96% of “snapped cables” are a result of user, not design, error.

Luiggi
Luiggi
7 years ago
Reply to  Flatbiller

Tell that to a lot of Shimano Saint and Zee users. The cable’s exit angle out of the RD body and into the fixing arm had such a raw angle it would go through several cables a year.

myke2241
myke2241
7 years ago
Reply to  Luiggi

That is the fault of the cable how? Seems like you know the issue but ignoring the problem.

Watch this. SRAM 1x & Shiminano 1x groups for three years. Hot dry SoCal trails. Never snapped a cable or worried about doing so.

Also never seen some doing the walk of shame because of a snapped cable. It’s extremely rare and most likely do to hangs and strikes the majority of time it happens

OriginalAngryA
OriginalAngryA
7 years ago
Reply to  Luiggi

Try using the Shimano RD-9000 Nose, Y5XX38000, at inside the adjuster barrel of your Saint and Zee ders. It will reduce the friction and fraying potential.

OriginalAngryA
OriginalAngryA
7 years ago
Reply to  OriginalAngryA

**Not adjuster barrel, but at the cable stop. You may need to use a hot needle to flare our the flange a bit more so it will not pass through the stop.

bearcol
bearcol
7 years ago
Reply to  Luiggi

BINGO! It’s a problem with xt 11 speed too. I’m breaking cables at an alarming rate, whereas with sram not so much. I do believe the clutch is playing a role too. Since the clutch, I’ve broken more cables than all my years prior.

bearcol
bearcol
7 years ago
Reply to  bearcol

Just wanted to add I used to run cables until the housing was toast with no fraying or breaks. Now I can’t go more than 2 months with xt. Something is up and it’s not user error. I’ve been riding a long time, never had cable issues until recently. My frame has a lot of chain growth and I ride rough trails frequently. I’m sure there’s a correlation with how much bouncing and pulling the rear d experiences.

I also had chronic issues with sram rear d’s coming loose. I talked about that here and I received similar back lash? Sram just changed the design and stated aggressive riders were having problems with loosening mechs because of the clutch and the attachement bolt design. Considering the issues I’m experiencing with xt 11 speed I have a feeling it won’t be long before shimano addresses the issue, but hey, if you’re not having issues it’s not relevant to you. Many didn’t experience loosening sram rear d’s. For me, it was so bad I had to switch to shimano.

Tim
Tim
7 years ago
Reply to  bearcol

Turn off the clutch when not riding?

bearcol
bearcol
7 years ago
Reply to  Tim

Tim, I’ve played with that, but not every ride I do is all up to all down. Also, while I’ve been talking about the clutch,I don’t believe it’s the main culprit because I had far fewer cable issues with sram. I believe the clutch is exacerbating a geometry issue with xt and other shimano cable routing. I believe clutches exacerbate sram cable life too but nowhere near as greatly.

Extra forces are being put other places because clutches don’t allow the pulley cage to release energy easily. How much extra force is stressing the cable seems to be unknown? It is known that the clutch transfers enough force to physically loosen the bolt on pre bushing sram mechs. It’s safe to say cables are feeling different stresses than pre clutch days too.

Luiggi
Luiggi
7 years ago
Reply to  bearcol

Take a look at Peter Verdone’s blog for a solution to the Shimano cable cutter syndrome: http://www.peterverdone.com/shadow-short-cage-issues/

bearcol
bearcol
7 years ago
Reply to  Luiggi

Luggi, thanks for the link! I’m experiencing everything he is with xt 11 speed. I hope he’s right when he says shimano knows about the issue and is trying the fix it!

He explains it well in the context of DH. If you’re not dumping tons of vert on rough terrain you won’t cause the high limit screw to beat up its tab, or stress cables. Those of us that ride trail bikes like DH bikes are experiencing the same issues with xt as DH’ers are with saint/zee. I’m going to try the things he recommends. Thanks again for the link!

bearcol
bearcol
7 years ago
Reply to  Luiggi

Luiggi, thanks for the link! it’s great to hear shimano is aware of the issue and is trying to fix it. I’m experiencing everything Peter is only with xt 11 speed. I’ll try the things he recommends. Thanks again!

Luiggi
Luiggi
7 years ago
Reply to  bearcol

You are welcome. I know for sure 11-speed Saints and Zees do the same as their 10-sp siblings. A friend went through three cables and two Saint RDs in a weekend when we took a short biking trip a couple of years ago. PVD’s suggestions put an end to his headaches.

bearcol
bearcol
7 years ago
Reply to  Ripnshread

You’ve never had a cable break? Snapping isn’t the best description. Ever since the clutch came out, cables fray then break if I don’t catch the fraying soon enough.

ted
ted
7 years ago
Reply to  bearcol

Never

Keith
Keith
7 years ago
Reply to  bearcol

Never

bearcol
bearcol
7 years ago
Reply to  Keith

Well if you’ve never had an issue that must mean it never happens to anyone.

Keith
Keith
7 years ago
Reply to  bearcol

Who said that…..

Zoso
Zoso
7 years ago
Reply to  bearcol

I went thru cables like no one’s business on 10spd XO. Drove me nuts. Finally learned it was the RD, Sram warranted it.
Also XX1, XO1 RDs keeps coming loose on me as well.

There, feel better now?

He he

Ripnshread
Ripnshread
7 years ago
Reply to  Zoso

Well, thanks for all the feedback on my WTF. I think it may have to do with the fact that I don’t see many well used DH derailleurs. Good to know, thanks.

bearcol
bearcol
7 years ago
Reply to  Ripnshread

Ripnshread, I’m breaking cables on new xt 11 speed rear d’s on trail bikes. This issue has nothing to do with well used DH parts.

I have xt 11 speed on a 120 and 160 bikes. Same issues on both bikes, but the 160’s high limit screw tab is beat up more and has gone through more cables.

Jay
Jay
7 years ago

How does the rear derailleur handle the massive 42 tooth large dog wasntbit designed for road biking?

Jay
Jay
7 years ago
Reply to  Jay

*large cog wasn’t it

Cam86r
Cam86r
7 years ago
Reply to  Jay

I had asked Acros directly and been told that it would not handle a 42t cassette cog, so this is quite interesting. I wonder if this derailleur is a newer model.

Luiggi
Luiggi
7 years ago
Reply to  Cam86r

This seems to be a new version indeed, since the original system was timed for 10sp cassettes and this one goes to 11 (see what I did there?).

TheKaiser
7 years ago
Reply to  Jay

I think the Acros system was originally MTB, if I remember correctly, and it has been around for many years. You might be thinking of the Rotor hydraulic derailleurs that came out more recently for high end road bikes.

Brer
Brer
7 years ago

Great job Woz and crew! Looks like it was a pretty fun project, keeping with the spirit of off the shelf awesome superlight builds! I was wondering when I’d see one of those German made Acros pop up on a custom build.

GorillaDownhilla
GorillaDownhilla
7 years ago

Amazing to see so many clueless comments about the Acros derailleur. I’m running the 11sp MTb version and it is stunning performance wise.

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.

Subscribe Now

Sign up to receive BikeRumor content direct to your inbox.