Cecile Ravanel's Quarq Electronic Brake Monitor - Val di Sole DH World Cup 2017

Aug 24, 2017
by Richard Cunningham  
Quark brake monitor


Cecile Ravanel's Commencal was being fitted with a Quarq wireless braking torque sensor that appears to be a modified version of that company's Prime crank-mounted power meter. The wireless sensor is encased in an aluminum spider that screws directly to the six-bolt pattern of her American Classic rear wheel. Like Quarq's crank-mount device, the sensor telegraphs torque and rpm data to Quarq's "Qollector" onboard computer which combines the data with real-time GPS tracking. The Qollector device stores the data, but it can also be linked in real time via ant, Bluetooth or cell-signal communication technology to the SRAM pits while Ravanel is on course.
Quark brake monitor

Perhaps the brake torque device will join Quarq's Shock Wiz suspension tuning system as a logical extension of its wireless data-management range. That said, one must wonder, "Why the burning need for fancy braking data collection?" Pinkbike Photographer Matt DeLorme met up with Evan Warner, who was assembling the Quarq system onto Ravanel's Commencal DH bike in the SRAM race shop pit at Val de Sole to find out.


Interview with Evan Warner

Why are you concentrating on braking data?


Val di Sole is rough on braking. We’re going to try putting on one of the Quarq units with the Quarq Qollector on Ceciles’s bike. It's going to provide some data for us on brake forces, and we’ll see how our brakes in general, react to this track. There has been a lot of discussion around the pits, this weekend in particular, about how riders use their brakes – mainly, subconsciously dragging the brakes. That is something that teams are sort of focusing upon, with times getting really tight.

Isn't that something that nearly every rider does?


This season has been up and down, and overall points are tight. I think everybody is looking for points where they can make up the most time and this subconscious kind of brake drag is something we can measure, and try to equate this to losing X amount of seconds to something that riders do, maybe not on purpose.

Quarq just showed up with a data collection system for braking?


The partnership with Quarq is amazing. Those guys are brilliant, and definitely coming out with stuff that, ideally, will help us across all disciplines, but I think, for now, the downhill here, and the brake focus at Val di Sole is a good place to try it. So, we'll give it a shot.

So, that Qollector beams data directly to Colorado Springs?


(Laughs) We should. We are trying to focus real heavily on the brakes that we're using - even tire pressure and the tires were running - to try to get a as accurate and as specific as we can in order to compile all this data into usable stuff that, moving forward, we can learn from and keep trying to help our World Cup athletes go faster.
Quark brake monitor
Evan Warner

Quark brake monitor
Heat is an issue: Ravanel's original rotor bears witness to the braking required to negotiate Val di Sole's track, The Quarq rotor appears to share the same bolt circle as some popular crank spiders

Quark brake monitor
Quarq's Qollector combines braking and rpm information with GPS software and can transmit that data wirelessly in a number of ways.

Quark brake monitor
The sensor is assembled into an aluminum spider, screwed onto Ravanel's American Classic rear wheel.

Quark brake monitor






72 Comments

  • 50 3
 Do the team managers get to see the data in real time? If so then they could radio to the rider to quit using their brakes so much!
  • 54 3
 Standing by the World Cup track and shouting at Greg Minnaar: "stop pulling those brakes!!!" - priceless...
  • 7 3
 @WAKIdesigns: more over the reason for the brake pull stats is actually quite simple. When you pull your brake you ramp your suspension a how much ramping is necessary and how much of the brake power is affecting the suspension and stability. It's pure genius
  • 10 2
 Radios are prohibited, but as far as I can tell in UCI rules, yelling from sidelines isn't....which leads me to this: Why don't teams have staff strategically placed throughout the course to let riders know if they're up or down on time? Racers would know exactly where the team staff will be, and the staff member flashes a simple solid red or solid green cue board...up or down split, easy glance out peripheral vision. The person(s) on sideline is radio'd the live time from someone at the finish.
  • 29 0
 @Jamminator: from memory that was banned too? They couldn't hold up cards to the riders or something. Besides, judging by Brosnan's, Gwin's and Hart's helmet cams for the top guys everything outside of the tape looks like when the Millenium Falcon hits warp speed.
  • 2 0
 @Jamminator: Nico and Fabian used to do that back in the day, if memory serves
  • 5 0
 Not that I ever hit 'warp speed Mr Zulu', but when I do, I'm looking at the trail, not old mate holding up a green or red light
  • 11 0
 @Jamminator: To what point?

Oh I better slow down, i'm going too fast?

Oh I better try harder than I already am?
  • 6 1
 @Waldon83: Mr Sulu, not Zulu
  • 5 7
 @stumpymidget: Horrible show, who cares
  • 2 1
 @Jamminator: very french.
  • 2 0
 @stumpymidget: Depends what dimension they're in?
  • 1 0
 @darkmuncan: next thing will be wattmeters and starring at stem all the way down to manage energy levels
"fk, I just hit 1500watts sprinting out of that orner, I better relax for 2 mins so I can sprint faster than Gee for the last 100m"
  • 3 0
 @darkmuncan: risk management
  • 1 0
 This could be very useful for Claudio
  • 3 0
 @Waldon83: Stop throwing those spears at me!
  • 1 0
 @darkmuncan: When you need to think big picture. Like this weekend, where Brosnan knows he needs to win the day for the overall by holding nothing back and if he crashes he cashes; but it wasn't in vein. Or if you're leading the world cup and know a crash would hurt your overall more than giving away a position by riding conservative.
  • 1 0
 @smithfeeble: You could argue it's marginal gains and kind of sneaky...but here we are, talking about electronic disc brake monitors and electronic suspension data logging.
  • 1 0
 @WAKIdesigns: DH needs pit boards
  • 19 0
 That would just show how much of a pussy I am!
  • 17 1
 I bet the cost of that would brake the bank
  • 4 0
 Or make your wallet bleed Wink
  • 1 0
 Or pad your investment portfolio
  • 9 1
 hmm. I think I can smell the beginnings of ABS for bikes.....
  • 1 2
 Traction control!
  • 1 1
 my heart says thatd be awesome, but my brain says stay pure. not really sure
  • 3 0
 But how do I skid through berms then? Lame...
  • 6 0
 Pretty sure your fingers are the equivalent of ABS
  • 4 0
 ABS equipped SRAM ebike here we come!
  • 2 0
 @BT180: you could say that about anything with ABS already installed tho
  • 6 3
 @jaycubzz: stay pure, let's buy some tiki torches and march to Crankworx next year chainting "26 for life" and "boost-out"
  • 1 0
 Is ABS even adequate if the vertical force under your tires (hence the brake force your tires can deliver) constantly changes?
  • 3 0
 @WAKIdesigns: i did that this year already. step your game up
  • 1 0
 @ColquhounerHooner: I think the best abs brakes were Hayes stroker trails. My buddy had them and they would never lock up and pulse like a bugger. *jokes Smile *
  • 1 0
 @AJ420: yes I had some hayes 9 once, I know what you mean, a missed marketing opportunity....
  • 6 0
 That is some special piece of Tech right there. No doubt this is the F1 of MTB... I love DH.

Beer
  • 3 0
 They will use the data as per car races and who can blame them, some car manufacturers make a lightweight pre bedded system that will only last one race. Some even make even lighter systems just for qualification rounds, its these marginal gains (paired with awesome talent) that brings the results. Yep I'm a braking nerd before you ask
  • 6 0
 Looks like that disc thing from Tron.
  • 2 1
 How to stopping faster, the complicated procedure. "You best be stopping faster I tell you what"; "You don't even know about my stopping faster friend"; "I'll tell you about the stopping faster chronicles pal, right here, right now".
  • 5 1
 This is really cool, but is this really where SRAM should be investing money in their brakes?
  • 3 0
 if this came with an app and i could link it to my smart phone. I could mount it to my stem and see on my phone when i use my brakes. I need this!
  • 1 0
 I bet if a little red light lit up on the bars when you hit the brakes, everyone would brake less. Having a visual representation of brake dragging would be really interesting, and also really easy to rig up. I know I make a conscious effort to tell myself to let go when I ride, but it is tough to constantly remind yourself.
  • 2 0
 I would just love to use this and compare brake manufacturers in real world conditions. Who ACTUALLY has the best brakes for the money?! The possibilities.....
  • 1 0
 Making race bikes more experimental is too great to see. The more data acquisition that happens only leads to better products designed with more information available the engineers.
  • 2 0
 That Quarq monitor has an element of strangeness to it, but also a certain charm
  • 2 0
 What does it tell you about the hub flange spacing if you can get that huge powermeter lump between it and the disc?
  • 2 0
 I thought this space left of the flange was more so to be sure that the brake caliper clears the spokes even if the wheel deflects in corners etc.
  • 1 0
 crazy technology these days! I'd like to see Strain Guage data on frames to see just what kind of stresses they are actually being subjected to!
  • 2 1
 That's some next level shit right there!
  • 2 1
 This is pretty freaking trick, and I'm thoroughly impressed.
  • 1 0
 If only I could compute the force it would take to stop these puns...
  • 1 1
 But that rotor is black, rotor looks like my Haues from back in tha days!
  • 1 0
 Yes, but is it "Enduro"?
  • 1 2
 Dang that thing looks to be well over 200mm, massive.
  • 3 5
 let the breaking puns start now
  • 1 2
 das broke
  • 1 3
 Nerdgasm. Cant stop braking down performance analytics.
  • 9 12
 Breaking news!!!
  • 28 2
 Braking news!
  • 9 1
 @DC981: stop.
  • 18 1
 @jaycubzz: hammertime..............
  • 4 2
 these puns are such a drag
  • 4 2
 @iffy: we really should take a brake
  • 3 5
 Can we just stop these puns
  • 4 3
 @ibishreddin: Why? They are so high caliper!
  • 1 0
 My head spins...
  • 1 0
 Now. You're just padding this article out.
  • 1 0
 I'm sensing some friction in these comments
  • 1 0
 @jaycubzz: These puns are really heating up
  • 3 0
 Well yeah, this is pretty much bleeding edge stuff we see here, pretty electifying. I definitely hope it works as messing with an important component like this could make or brake your run. Ravanel is a fluid rider and this stuff will only leverage her performance. Oh, I could keep going on like this forever but I can imagine a long pun like this rubs you the wrong way so I'll stop on a dime for you.

TL;DR: pun.
Below threshold threads are hidden

Post a Comment



Copyright © 2000 - 2019. Pinkbike.com. All rights reserved.
dv65 0.036351
Mobile Version of Website