CeramicSpeed Unveil Prototype Telescoping MTB Drivetrain - Eurobike 2019

Sep 4, 2019
by James Smurthwaite  
Photo: Aidan Oliver

Last year CeramicSpeed stole the show at Eurobike with their Driven drivetrain that was claimed to be 99% efficient and a serious improvement over derailleur offerings. Of course, our first question was, "Yeah, but will it ever work on a mountain bike?" Last year, Ceramicspeed said it could.... but only if it was a hardtail... and only if it was a singlespeed. Last year's prototype was more about making the most efficient drivetrain possible rather than having one that shifted and it certainly couldn't have coped with the axle paths and changing chainstay lengths of a full-suspension mountain bike

This year they're back with a solution though, a telescoping, rotating version of the drivetrain that they claim works with full suspension mountain bikes. This version still doesn't shift yet but CeramicSpeed did have a prototype version on a road bike that did shift. Combine the two together and the Driven mountain bike drivetrain is a step closer to reality.

CeramicSpeed claim this system could save up to 500 grams on a traditional derailleur set up.

So what's going on here? Designed in conjunction with University of Colorado Boulder’s Mechanical Engineering Department, the Driven doesn't look too dissimilar from a standard drivetrain, the cassette and chainring are in the same place you'd expect, albeit with their teeth perpendicular to a traditional setup. The big difference is the carbon-fiber driveshaft with a roller pinion on each end that engages those teeth.

The version at Eurobike this year was designed to allow mountain bikers to use this tech as well. To do this, CeramicSpeed added a telescoping element inside the prototype and allow the driveshaft to rotate via a spherical bearing tucked behind the chainring. There's a video of it in action here:

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But the key difference between mountain bikers and road bikers is that on the whole, we don't really care about the minimal gain a more efficient drivetrain could offer, especially when it comes at the expense of the tried and tested derailleur. But CeramicSpeed claim there are some other benefits here too. They believe the driveshaft could be used to lock out the bike's rear end, meaning that a lockout would not have to be squashed into a shock, which may open up development opportunities there. The drivetrain also does not suffer from chain forces that affect suspension action, which could make a bike that uses this drivetrain more supple. Finally, the lack of a derailleur moves weight away from the wheel and into the frame, reducing unsprung weight. CermaicSpeed described it as having the benefits of a gearbox with none of the drag that comes along with it.


At the moment this is a very early concept and it was certainly nowhere near production. The shaft could only travel a small distance but CeramicSpeed claimed that there was theoretically no travel length that would be too long. The main drawback here is that the system will only work on a bike where the pivot is above the axle, on something like a Horst link bike this simply wouldn't be possible. CeramicSpeed and Canyon also had to redesign the rear triangle of the bike to make the system fit, something that would have to be considered on most bikes if the product ever came to market.

CeramicSpeed are very keen to stress this is an early proof of concept and is still lightyears away from production but for us, it's a great piece of engineering and an interesting look into a potential future of mountain bikes.


121 Comments

  • 118 39
 1. The Shaft-driven bicycle is not new or innovative. They were popular at the start of the 20th century but some are still around. Please see en.wikipedia.org/wiki/Shaft-driven_bicycle
2. The shaft drive is inherently less efficient than the chain and chain wheel design as the pedaling force needs to be transferred over two right angle connections. Even with perfect material stiffness this causes loss of power.
3. No material is ever perfectly stiff so sideways loading on the cassette and crank wheel would require these parts to be very overbuild in comparison to the current chain wheels that are loaded axially. Existing shaft drives have a very compact and heavy design for a reason. The displayed "prototype" has no chance of resisiting deflection even under moderate power.
4. Ceramic Speed has not yet shown any of their "prototypes" being ridden. These displayed on trade shows have no pedals attached to avoid loading.
5. Ceramic Speed is known for, let's say, "unfounded claims".
6. Such tiny bearings are not efficient and not durable at all.

The conclusion: this thing will never ride, it's purpose is to draw attention and sell more of their overpriced bearings to triathletes with too much cash on their hands.
  • 39 2
 I wanted to agree to everything you said til I saw that
www.vitalmtb.com/videos/member/CeramicSpeed-Driven-Drivetrain,37002/sspomer,2
It's working and being tested on track already
But it's actually louder than a chain...
  • 11 2
 @Konyp I think the purpose of this adventure was to see how efficient the drivetrain could be made. Perhaps you can explain your second point in more detail...
  • 65 9
 You're like that guy from flat Earth YouTube who sounds really convincing until someone who actually know what they are talking about shows up.
  • 10 3
 @qreative-bicycle: notice how small the rear "cog" looked at the end when someone was riding it, and how they avoid any close-ups. I bet that track bike had a single gear, and we don't know if the guy was being careful or not about putting down too much power
  • 11 2
 @pinkberry3:
Actual measured bicycle chain drive efficiency can be as high as 98.2%. See: www.ihpva.org/HParchive/PDF/hp50-2000.pdf
Ceramic speed are using a sort of modified bevel gear that has a maximum theoretical efficiency of 99%. This device has two bevel gears. In practical applications at a right angle the efficiency will range from ~80 to 90something%.
The tiny bearings are also adding power loss to the system, especially that in practice they would need to sealed somehow.
It is hard to see how this could be a massive improvement over a standard drive train.
  • 15 3
 @reverend27: Outstanding claims require outstanding evidence. The burden of proof is on the side of Ceramic Speed and they have not published any papers or demonstrated working prototypes for testing.
Ceramic Speed have made a lot of BS claims regarding their bearings that have been debunked by competent people, e.g. www.youtube.com/watch?v=o7iZVfSDbiA
I would not trust anything they say.
  • 9 0
 @qreative-bicycle: Ok, looks nice but the shifter is not shown working under load.
The track shot does not show the drivetrain used. As mentioned, shaft driven bikes are not new and some even have changing gears. I will eat my hat if the working bike is using a style of multi speed cassette as shown in this article.
  • 2 1
 @Konyp: the bearings don't need to be sealed when the whole drive train can be sealed
  • 1 0
 They know that, it is the engagement mechanism which they claim is new. Still agree with the rest of what you say.
  • 24 1
 @reverend27: Hey - Flat-Earthers have supporters around the globe.
  • 4 16
flag nurseben (Sep 4, 2019 at 9:13) (Below Threshold)
 So you're saying that they not only built it, but they also showed it, and now it appears they are being ridden.

You scored the first post to the thread, too bad it was the worst post to the thread.

You might want to wait for more enlightened posters next time, just saying Wink
  • 3 0
 Add the absolute insane cost vs. the traditional drivetrain...
  • 3 3
 Exactly! People are so naive to believe this bullshit to attract attention. First of all if this worked, Shimano or SRAM or would be using it already. Very simple!
  • 4 1
 I'm thinking that riding this in any type of tall-ish grass or brush would lock up on you pretty fast. Seems more for roadies where there's less risk of twigs and stuff getting lodged in there; And good lord the teeth if your calf accidentally touches that thing, it'll turn into ground meat.
  • 3 1
 @Konyp:
The efficiency numbers you state for bevel gears are for standard gear teeth (sliding friction). Ceramic speed is using the rollers to reduce friction and I would agree that they do in fact reduce friction and increase efficiency (rolling friction benefit versus sliding friction). So I think your statement about how it is inherently less efficient is somewhat flawed.

Overall, the jump from 98% to 99% efficiency doesn’t seem like a big jump but it can be in certain situations - think tour de France where you ride for a long time.

I’m not saying that this is the future, as it seems difficult to mass produce (they even admit this), but it is a valiant effort to increase efficiency and try something new. A 1% absolute gain at that high of efficiency is very hard to get! We shouldn’t stop people from trying to innovate, otherwise we don’t get any new cool shit ????
  • 4 3
 @pinkberry3: with all due respect... this is a marketing exercise of a company known for bold claims, misleading product demos and selling overpriced bearings to triathletes who have more cash than time to understand what the hell they are spending it on.

Chains and cogs are not perfect but this thing is ridiculous. Even more ridiculous than claiming that ceramic bearings offer performance advantage over stainless steel. The only way you can believe that is if you are given a stand with pulleys with bushing pulley, steel bearing pulley and ceramic bearing pulley next to each other to compare how smooth they rotate and some scum of a c*nt degreased the ceramic bearing...
  • 5 0
 Another thing to note is a normal bicycle gear/chain system has many points of contact to distribute load over, This has one. Single points of contact can work in industrial or automotive applications with heavy strong solid gears, but that's not really appropriate for a bicycle application.
  • 7 4
 1. Material engineering and manufacturing has come a long way. Old tech that may have been pointless back in the day can sometimes be made better with modern manufacturing.

2. In a perfect world. Chains get dirty, derailleurs get dirty, chain lines affect efficiency, and so on. Higher power transfer is done best with a chain, however, at steady state cruise and lower wattage, some of the power is being wasted in the friction of the chain, especially when the chain line is not straight and there is road gunk in the drivetrain. This shaft drive is designed for that specific case, not to be efficient everywhere.

3. You really don't understand how stiff carbon can be. Not to mention that under power, a carbon road bike frame itself flexes. Flex can be accounted for, and power can still be transferred.

4. There is a video of the road bike being ridden.

5. On par with a lot of other manufacturers. Some of it is advertising, nothing new.

6. Durable? Probably not as durable as the larger ones. Efficient? Definitely more efficient than friction contact of a chain over cassette cogs.

Don't shit on new technology, ever. Innovation comes from experiments, not iterations, and experiments should be encouraged. The only argument you can ever make towards stuff like this is whether or not its worth the money - I agree that this probably is not. But that doesn't mean it shouldn't exist.
  • 2 0
 @qreative-bicycle: that's barely under any load....just finger cranking...
  • 1 2
 Im having my two pence here.... Im not up on Ceramic Speed as a company or their rep. I am up on rear mechs. Ive smashed a few both close to and far from civilisation. They work well, are quite cheap and are available. Literally everything else in mtb has evolved but the paralagram chain dancer remains because its in the too difficult box. Gear boxes are not happening as they are too draggy and require frame buy in. There fore, concepts like this are the future. Ill remind you there was a time last century when we thought Girvin flex stems and Amp Research forks were sh1t hot compared to those crappy telescopic forks. Also how we laughed at those seat posts that went down themselves....
  • 2 1
 @ilovedust: so gearboxes are not happening but this is the future? Smile

I believe there is a law of human dynamics that is called: “will do” and this solution goes quite a long way from that. If they make a sealed one, swimming in lubricant, it may be interesting. Until then: derailleurs and gearboxes. Cable operated.
  • 1 0
 Thanks for checking the geek in me in two cases the torque of thisbike is going backwards on my normal steed its all to the left. I wonder if that increases mental drag.
  • 2 0
 Correction of myself all the torque is centered on a chained bicycle
  • 2 0
 Correction of a correction torque is all to the left.
  • 1 0
 @phops: so theres a story of an inventor and his apprentice and his apprentice doesnt follow stabdard operation procedure to hus own peril. Secondly idyllically to Newton all these tests account friction as a major variable. So really its the torque of the shaft is all going backwars really what they need to do is have this left side drive to have torque in plane with the direction of motion.
  • 3 0
 @ilovedust: So a mid mount gearbox requires frame buy in, but this doesn't?
  • 3 0
 I´m sceptical ,too. This thing will never withstand a sprint. There is only one(tiny) bearing, which transfers all the torque to one of these sharp teeths(which seemed to be made from aluminium), it will just shear of or bend away.
With a chain, there are much more teeths engaged (which are also more beefy).
This will not work, with the shown dimensions(or materials), my opinion.
But a great engineering challenge. And it seemed that they figured out(in a way) to shift this thing!
  • 1 0
 @WAKIdesigns: hehe hilarious.
  • 1 0
 Bummer... I almost got excited at first look but now, not so much. I'll keep my chain and part-aluminum cassette.
  • 2 1
 @hamncheez: there is no reason a system like this could not mount to iscg chain guide mounts. So no, it potentially does not need a proprietary frame.
  • 2 0
 @qreative-bicycle: But you cannot identify Ceramicspeed drivetrain on na track rider bike. Is half of the video without a sound for a reason?
  • 1 0
 @ilovedust: the driveshaft requires an elevated chainstay
  • 42 2
 Well there is 26 seconds of my life I won't get back from watching that rather pointless video.
  • 9 5
 The picture was enough to tell me that it is a bad idea.
  • 7 1
 So sad I fell for that. I felt like I just watched a video of big foot in California lol
  • 22 0
 That cassette looks like one of those marijuana grinders... I've seen them on the internets.
  • 4 2
 Imagine the damage that'll inflict on calves in an accident. Ground flesh possible on drive side, branded skin and cooked flesh possible on the brake side.
  • 20 2
 I don't like it. It's different. And that's bad.
  • 19 1
 Ladies and gentlemen, the official PB comments section account right there.
  • 15 1
 The interesting bit is how finished these prototypes look. First that Specialized road bike and now this Canyon. I wonder if they have some big contracts signed already.. Also, it better be 14 speed..
  • 6 1
 Ceramicspeed's business is right into smoke-and-mirrors land. They better put a ton of lipstick on the pig if they want to sell it.

On a related note, the "cassette" looks like a Fresnel version of a regular one.
  • 1 0
 It's 12 :-)
  • 12 0
 Can't people just enjoy the engineering and imagination here for a second. Yes these types of systems existed a hundred years ago, but so did just about every suspension design out there as well.

If you know Ceramicspeed products you would know that realistically, even if they did get it into production, it would probably be over $10K for the system. Will it ever get there? Probably not, but still cool to see companies thinking outside the box.
  • 14 2
 This goes beyond creating solutions for problems that don't exist. Its fulfilling wishes for dreams that weren't even remembered.
  • 8 0
 hope and rohloff should join forces and remake the sturmy archer 3spd,and stick it in a bb sise unit, climb trail and decend,I don't need 13 gears and part of an old fishing rod attached to my bike,
  • 7 0
 Judging from the prices for the CS ceramic pulleys and cage, I'm guessing that if this ever come to production it will cost 2½ kidneys.
  • 8 4
 Sorry - I think this is just BS. I believe they are trying to generate hype for the brand. I can't see how you would change gear as a sliding changer would effectively either have to be in 2 gears at once for a split second (which doesn't work as it will jam or crunch!) or will have to go into neutral (great! lol). As far as I know, nobody has ever seen this drivetrain change gear on any bike (mtb or road). The only functioning prototype they appear to have is for a single speed.

I'll happily be corrected, because if it does work, it could be great, but I just don't buy it.
  • 6 0
 Yea but can it shift under any sort of load? @czytoon:
  • 1 0
 I would love to see this combined with a gearbox
  • 3 0
 I'll believe it when I see it in real world use. These guys don't have anything close to a road worthy design that shifts, and moving the rear wheel through 1cm of travel isn't enough to make me have any hopes that it will ever be sold for mountainbikes with rear suspension. In my eyes its 100% marketing gimmick to get people interested in their brand.
Also, looks like it will get incredibly dirty easily, and I wonder how that will effect their 99% efficiency claim. My guess is that it does not handle dirt/grime well at all.
  • 4 0
 I hope you all realize that the fact anyone has posted a comment here has fallen into Ceramic Speed's calculated, and undeniably diabolically evil plans. Waaaaaaaahaaaaaaaahaaaaaaaa!!!!!
  • 3 0
 "They believe the driveshaft could be used to lock out the bike's rear end, meaning that a lockout would not have to be squashed into a shock, which may open up development opportunities there."

In a sneaky way they try to turn a major bug into a feature.
Pedaling performance of modern frames comes from anti squat property achieved by using chain tension to prevent suspension bobbing when pedaling. They need to somehow lock movement of this telescopic driveshaft when pressure on pedals is applied otherwise it will be unusable.
  • 1 0
 Yes, exactly.
Maybe this drivetrain could work with a system like Fox's Live Valve connected to the telescoping drive shaft? However, the price of a combined Ceramicspeed Driven and Fox Live Valve bike would probably be very high, at least at first.
  • 3 0
 Looks crazy and new innovations great, but seeing as it's made by ceramicspeed I'd be willing to bet It's going to cost more than a house, going by how much they charge the rest of their products
  • 2 0
 Gee for such a out there drive train design they sure limit themselves by using traditional orientation and positioning of parts. Why the hell is the big stupid heavy lump of alloy still out on the back wheel? Growth in "chainstay" can also be managed by orientating the drive shaft at the pivot point.
  • 2 0
 While that would work it would only work for a single bike in a single size. By allowing it to be telescopic it can theoretically fit any bike
  • 1 0
 So put your gear range at the crank?
  • 3 0
 Prototypes are all well and good but when there are so many caveats about it then its a bit pointless. Strikes me more as a pipedream than a prototype.
  • 1 0
 For this to work the cassette and the driver would need to be held stationary momentarily to allow the driver to slide along the shaft to engage the next gear. This means you can't shift whilst pedalling otherwise the driver and cassette will not mesh. It either needs some form of Syncro to keep the driver and cassette spinning at the same speed so they mesh when rotating or you're going to have this awful moment of no drive whilst you shift which would either mean keeping your feet dead still, or being dropped into neutral... it looks fancy but it is far from functional
  • 1 0
 There's a video out there mentioned in a comment somewhere above which shows one half of the driver shifting into the next gear while being away from the cassette and the other half following half a turn later when it is disengaged. Makes sense once you see it, but it is still a very questionable concept.
  • 1 0
 @NickBosshard: I have seen the video, and it is presented with a different version of the system shown in this post. It consists of a two-piece metal sleeve around the shaft. The images in this post look like the driver unit is one solid piece (aside from the bearings) so that wouldn't work in this case. The video is also at very low speed, with the bike in the air so no real load applied to the drive-train.
  • 2 0
 This is on many high end motorcycles. Give me this on my road bike. Tuck everything away in a smooth package like this. The aero benefits would be great. Not interested in this on my mountain bike.
  • 1 0
 It'd be a interesting to combine an independent single speed chain drive with this rear plate as a means of changing gear. You'd get the flexibility of a chain drive with a smaller tensioner than a derailleur, plus extra room at the hub with the vertical gearing and presumably easier to manufacture a lightweight one piece steel disc vs traditional cassette.
  • 1 0
 Looks interesting to me. Personally, I don't like chains and derailleurs because they have some annoyances, but they are the absolute best options right now. If driveshafts or internal gear boxes can be just a light, efficient, and more maintenance-free than chain/derailleurs then they are on to something.
  • 1 0
 Hey the reason for chain growth is to use the tension of the chain to act as antisquat. This design removes chain tension and so by making the contact point of the driveshaft at the pivot point (so it has to be on the arc of the chainring) removes the need for a telescopic drive shaft
  • 3 1
 Very cool, but it has some practical things to overcome for MTB use, e.g. those bearings are going to get so dirty, especially in mud!
  • 3 1
 So does chain and this would be easier to cover up since it does not flap around like chain.
  • 1 1
 This is not new technology at all. PTO shaft style drivetrains have been around for far longer than derailleur style drivetrains. Like most recent innovations in the cycling industry it's either been copied from another application or renewed technology from years ago
  • 4 0
 For Christ sake can no one flip that and make it a gearbox.
  • 5 5
 [rant] So much negative and narrow minded in this place from the short sighted, know-it-all sheeple.
This may the answer to a question nobody asked, but that is beside the point, people are trying different ideas out, you can't know where this may lead in terms of inspiring someone else who has the better idea that does answer all the presumed challenges. Pull your heads out, open your minds and celebrate peoples willingness to try something different.
Go ahead neg prop my ass, you're only proving my point [/rant]
  • 2 0
 For real. I for one disagree with the author on the point made about "we don't really care about the minimal gain a more efficient drivetrain could offer, especially when it comes at the expense of the tried and tested derailleur". Speak for yourself.

Yes derailleurs have worked for years but if there's better, more efficient solutions out there why not invest in R&D to make them work? I personally think derailleurs are overall kind of shitty and inefficient. I get sick of adjusting/replacing mine all the time. If the future of the industry is more efficient drive shafts then I'm all for it.
  • 2 0
 @yoimaninja: You say you disagree with "we don't really care about the minimal gain etc." Because Lauf.
  • 2 1
 I disagree, having an open forum like this to see how the market perceives an idea and to highlight potential issues and flaws is brilliant. It lets the developer consider the potential consumers points and take back some valuable feedback from the people they will ultimately be trying to sell to. Progression is great where it's beneficial, but the cycling community has certainly endured a lot of changes in recent years which have made it difficult for consumers to keep up with and it has rendered peoples 1 year old bikes as out-of-date so i understand some of the resistance. On the whole, feedback is a good thing.
  • 1 2
 @He-Who-Rides: Bullshit! That only determines if a product in it's final form is ready for market. If people with ideas just came here to listen to the "self appointed experts" than all you will ever see is incremental advance. This is just another example of people who cant see the larger picture trying to force everyone else to see the world from their limited perspective. People who are willing to defy convention are to be celebrated, not ridiculed. If you see something on the market that you don't like, then don't buy it, but don't presume to speak for me or anyone else.
  • 2 1
 @Hyakian: I think you need to have a good long look at yourself, this is one of the most hypocritical comments I've ever seen. Are you high or something? I don't think you actual read anything i said properly, maybe you just like to complain about people complaining
  • 1 2
 @He-Who-Rides: Look at myself - lol, you do the same please. I read your reply... Opinions, everyone has one, but here is the thing, concepts, no matter how wacky are concepts, not products ready for market. So if people who have ideas, that are brave enough to put them out there, listen to the naysayers and just give up, we get nowhere. If, on the other hand, we are talking about a ready for production, prototype, then I could agree with your statement. So, you can judge away and call me whatever you like, however, I'm sticking to my guns on this one and I will celebrate anyone that wants to break convention a go because that shit is interesting and you cannot predict what it will lead to.
  • 1 1
 @Hyakian: Your reply clearly shows that you didn't actually read my comments properly. Nowhere have i said concepts are a bad thing. Let me refer you to some highlights from my first comment: "an open forum like this to see how the market perceives an idea and to highlight potential issues and flaws is brilliant." I haven't said that they should give up, i suggested that "It lets the developer consider the potential consumers points" developer being the keyword, meaning it isn't a finished product and there is still work to be done. You're slating people for having opinions, because they differ to your own. I'm afraid that makes you a hypocrite.
  • 1 0
 Nah, actually it doesn't... I my view your conclusions are based on presumptions, however I'll concede that maybe this is because I didn't articulate my thoughts very well. I am not saying that people aren't entitled to their opinions, and (in the big picture) it hardly matters whether I agree with them or not. My original point is that opinions are cheap and easy to toss and are frequently not worth the 1's and 0's they represent in binary form. Also, there is a difference between constructive criticism and straight negativity expressed in a throwaway comment on a website. But hey, "that's like my opinion man"...

Creative thinking flourishes in an environment where anything is possible. At it's best, it is a form of exploration that requires one to think past convention, and what we except as rules and standards. Not every idea is good or worth pursuing, however examining concepts that die at birth through the lens of possibility is a part of the path and often (not always) leads to other, better ideas. My view, and you are welcome to disagree, is that this process should be encouraged, not derided.

Maybe this is a semantic disconnect?
Experience tells me that once a concept is regarded as "viable" and is actively being considered as a potential product for development, then yes, critical analysis, and active feedback loops are required and necessary. Including but not limited to, prototyping, lab testing, proof of concept testing, field testing, focus group activity (via a variety of venues) etc, etc..
  • 3 0
 Sorry, didn't read the first part of the post.
  • 2 0
 Sorry, didn't read the first part of the post.
  • 8 0
 @mihauek: Sorry, you didn't read the first part of the post?
  • 2 0
 @whiteboarder: Sorry, didn't read the first part of the post.
  • 5 0
 There is a part of the post mihauek did not read. It is the first part. For that, mihauek is sorry.
  • 6 0
 @tripleultrasuperboostplusplus: man, how do you know that?
  • 2 1
 Could see this in 5 years on high end road bikes, then HT MTBs, etc.. The Pinion is like pedaling thru quicksand but we have to do better than the derailleur at some point.
  • 3 0
 Gear up to 6 cogs in a single huck to flat
  • 2 1
 Ive hated derailleurs forever. When I had this idea as a kid, I ran the shaft through the chainstay. Didn't work. I still ride single speed till a solution arises.
  • 6 0
 Luddite. Just sayin.
  • 2 0
 I would love to put this on my 20'000 $ road bike . Ride to nearest Starbucks for some serious posing!
Looks cool.
  • 1 0
 If it can be adapted to any frame, that's a pretty interesting work around, but I think I'd take a gear box if the frame has to be designed around a system.
  • 2 0
 "Could this crazy concept from CeramicSpeed be the drivetrain that kills the derailleur? "

NO
  • 1 0
 I've seen this, or a very similar design, floating on Youtube for what seems like a year. Is it just getting some spotlight now or?
  • 1 0
 Why didn't they put the shifting part in the crank area so that it limits the weight on the wheel ?
  • 2 0
 A bunch of spinning teeth right by your ankle probably not a good idea
  • 1 0
 @honourablegeorge: Not if they are oriented on the opposite side. Also, adding a bashguard is the easy parts.
  • 1 0
 looks sick!! Not so sure about locking out suspension through that driveshaft.
  • 1 0
 I know! I'm so tossed between the hydraulic 13 speed shifting I read about here yesterday vs. this carbon drive shaft.... I guess I'll just keep my cable pulled derailleurs for a while more.
  • 2 0
 That cassette looks ready to shred any piece of flesh that comes near it
  • 3 1
 hard pass, put the effort into gearboxes
  • 2 1
 This whole thing is just a big ol' publicity stunt. Never gonna make the real world.
  • 2 0
 This is the maddest thing I've seen on a bike.
  • 10 0
 You've not seen my wife on hers.
  • 3 0
 @Dropthedebt: best comment ever!!!
  • 2 0
 Um, tire clearance anyone?
  • 1 0
 I’d like to see it’s performance after dicking it into a rock or two on the trails
  • 2 0
 I'd really like to see that thing under load.
  • 2 0
 Ceramic Speed really is on the bleeding edge of turd polishing.
  • 2 0
 Stay away from mud.
  • 1 0
 What he said
  • 1 0
 It’s only a 1X12 not interested till it’s 1X14....
  • 1 0
 Again with this shit?!
Shame on you, pinkbike!
  • 5 4
 Just no.
  • 9 1
 Just give us an efficient gearbox.
  • 1 1
 waste of money and investment.
  • 1 0
 This is fascinating.
  • 1 1
 M I C K E Y M O U S E
  • 4 6
 Just as cunty as the UCI

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