Remember that time when a new, wildly different standard was proposed and pretty much everyone liked the idea? If you missed its debut last week, Matt Beer's in-depth look at the prototype Supre drivetrain showed that a lot of us would be open to a completely new layout if it eliminated some drawbacks of a traditional system. Cedric Eveleigh, the man behind Supre, says that the four key elements are durability, efficiency, chain damping, and a lower unsprung mass, all on a proprietary high-pivot full-suspension platform, and we've got him on today's show to hear how it came to be and where it might be going.
THE PINKBIKE PODCAST // EPISODE 90 - IS SUPRE THE FUTURE OF TROUBLE-FREE DRIVETRAINS? Nov 19th, 2021
It's like a gearbox but a lot better.
With the Supre drivetrain, Eveleigh has split the traditional derailleur's duties - shifting and providing chain tension - into two different components. First, the low-hanging derailleur that we're all used to seeing is gone, replaced in part by a mini-derailleur of sorts that moves the chain across the cogs and is tucked up safely into the swingarm. You know, where it's far less likely to get ripped off or bent. The other main component, the tensioner, rotates around the bottom bracket and does the job of the now missing derailleur cage - to add chain tension.
Supre works with mostly conventional components, including a normal hub, T47 bottom bracket, cranks, cassette, chain, and shifter, but does require a purpose-built full-suspension design that uses an idler pulley, a necessity that Eveleigh explains in the podcast interview below.
Supre Drive Details • Requires a high-pivot suspension design, idler pulley • Uses standard hub, cranks, cassette, shifter, and chain • 12-speed, 10-51T gear range • Custom mini-derailleur with large, single jockey wheel • Generous ground clearance • Hydraulic chain tensioner • Approximate constant chain tension across all gears • More info: lalbikes.com • Instagram: @lal_bikes
Featuring a rotating cast of the editorial team and other guests, the Pinkbike podcast is a weekly update on all the latest stories from around the world of mountain biking, as well as some frank discussion about tech, racing, and everything in between.
27+ years of riding and 3 broken derailleurs/3 bent hangers. Maybe I've been lucky. To me the two biggest problems to solve in MTB's are: 1.) Shifting without needing to pedal. 2.) Droppers that can drop down automatically without body weight (insert Reverb joke here).
I’m with you. Seldom ever a smashed mech or broken hanger. If I bike came stock with the Lal system I could be intrigued but at this point, I feel my current setup should be work great for the next several years. I can’t say anything is a nagging pain in the ass that requires regular maintenance or keeps me from riding. (2021 Slash with 11sp XT drivetrain and XT brakes and Trail SPDs, Synthesis wheels, Maxxis tires, Highline post, SQLab saddle, and Lyrik fork.)
Same here. I rarely destroy derailleurs (one in the last 4-5 years?) but plenty of other riders have more problems with them. That doesn't certainly doesn't mean there isn't a better way to do it, though. I'd put my money on this before any sort of gearbox design.
I think people like us have evolved to ride in a way that doesn't put our derailleurs in harm's way too often... but what if we didn't have to adapt our riding to protect the dangly bits? The old adage of "good mechanics make bad racers because they care about the bike's longevity" is probably true.
Also, there are some other potential benefits of Cedric's system beyond derailleur smashing. The constant chain tension and lower unsprung weight are both pretty interesting propositions.
Have been riding mtbs since 1993 and have broken countless derailleurs! I'm guessing you're much smoother (maybe lighter) rider than some of us that destroy derailleurs and other standard drivetrain components.
Back when I lived in a crappy place with a bunch of dudes I used to make derailleur wind chimes with all sorts of broken parts to decoratively hang to impress the ladies if they were ever to come over (not very often haha!)...... I would seriously consider this system over a gearbox as well! I'm guessing it is probably a bit more efficient although it would require more maintenance.
Seriously, how many derailleurs have you broken in the last 8 years? Back in the 90's and early 2000's derailleurs generally sucked. I remember some hangers back in the 90's were part of the frame so it was much easier to break a derailleur straight off your bike. But, nowadays the soft aluminum hanger is way more likely to bend out vs breaking the derailleur itself. Usually you can just bend it back into place to make it back to the trail head. Perhaps your location/terrain plays a bigger role in how often you blow up your mechanicals? PB SURVEY PLEASE!
@brianpark: @derekr My riding style has definitely changed (I’ll use the word “improved” very loosely). No more riding ‘street’ on a DH bike, no more attempts at trials and skinnies, teeter totters, and the like. These days my riding is straight up trail riding littered with lots of well-shaped jumps and largely free of jank. I’ve migrated to an all-Shimano drivetrain after years of composite stuff from the other big S. I find the Japanese stuff lasts a lot longer. The other factor is the UDH on my Slash - a really robust solution.
@dirtdiggler: Broken at least 6 or 7. in the last 8 years which I would say is not as much as I used to. The thing is, once you bend one you can break it if you really torque on it which is why I figured maybe you aren't a lard-arse like me . The thing is when derailleurs break they sometimes take other stuff with it like spokes, chain etc. And if you're way out in the bush on an all day epic, it could mean the difference between getting home and staying the night.
I bikepack in the boonies (ie chilcotins) so reliability is very important to me. So, even breaking one derailleur a year is unacceptable for me. Just my opinion sir!
Damn....that's a lot of derailleurs! I've lived in the north east (U.S.) for most of my riding and there hasn't been that many situations where I worry about killing my derailleur, even on shuttle and lift runs.
I'm not against innovation and improvement. One thing that struck a chord was not needing to worry about which side you drop the bike down on. It will be interesting to see the refined version and hopefully Cedric can make a non high-pivot version in the future.
@brianpark: my three dead derailleurs in the past two years were all victims of the drivetrain ingesting a stick. I'm not sure how I can modify my riding to avoid sticks on the trails, other than not riding.
@paulwatt: I agree, if the hanger is slightly bent it will drive you crazy. But, I'm more likely to have problems with my tires burping or my brakes not grabbing right vs breaking a derailleur. It's not like I need to tape an extra derailleur to my down tube in case one breaks. Although, that would be hilarious!
I haven't broken or bent a derailleur since at least 2012. I have broken one broke a derailleur hanger in that time though, and that was pretty annoying. Prior to that maybe I bent some ancient XT thing?
While I was a bit confused by him dramatically saying that current derailleurs "EXPLODE ALL THE TIME", I do agree that this system, in premise, makes a lot of sense for MTBs. Similar how QR was adapted from road bikes but makes much less sense than rugged through axles.
@brianpark: I agree with your statement on how we’ve learned to ride. I would like to ride more narrow rock chutes where now I’m thinking about smashing my drivetrain.
Great hearing someone talk passionately about their work. Would be great to get more engineers / designers on the podcast whenever new products are released to talk about their perspective on it, be that from big or small companies.
Not going to lie, that's super cool. Better chain wrap should reduce chain and cog wear, obviously no more dropped chains... Guessing with less leverage on the derailleur pins and mounting points derailleurs will last longer before ultimately wearing out as well. Decreasing unstprung weight on the rear is also another plus. Would love to ride a bike with this setup. #license agreement with Shimano please
I was back from work on the bike, after what felt like the shittiest day of the shittiest week of the year. Turned up PB's podcast and heard @mikelevy reading out loud a comment I posted made on the bottom of the last podcast. The good surprise gave me the grin for the rest of my ride and I'm very thankful for that. Cheers and thanks, you guys rock.
Oh no, they have started bleeping Levy! Turned a blind eye to ad reads as it's an understandably strong market and accept it as a good thing for the business overall, but a shame on the censoring :'( Yes the podcast is great blah blah, but it's like.... ... It's like have a Subway sandwich each week, to find out they no longer offer your choice of bread. It's still a good sandwich... but I liked the bread as part of it...
I agree! I loved the loose format to the PB podcast! Never too serious and always enjoyable to listen to with their different personalities and opinions... Levy getting bleeped is no longer Levy, and I'm only here for Levy!
@Basketcase889: I'm mostly just teaching myself how to edit the podcasts and wanted to know how to bleep - it won't be a regular thing Recording two or three podcasts this week and I'll drop a couple extra F-bombs in them to balance things out haha
On a different topic and important to many, I would think. Early in this podcast everybody dismissed AXS as just OK and not any kind of truly important. For those of us with impaired grip ( I broke my neck 2 and a half years ago, ulnar nerve damage) the AXS system is a complete game changer. Not having to swing the thumb through a complete lever travel is a real difference in maintaining grip. I'm guessing there are many riders out there that for one reason or another have grip strength issues that would be very very happy if they invested in the switch. The shifting is nice and I wouldn't go back, it's that good, but the dropper operation if you have grip issues is off the charts better. Great podcast PB, I listened to them all, saving them for while I did neck therapy. It's the little things that get you through the tough times.
Def agree! I ripped my tendon off my left thumb in a bad crash a few years ago. It's hard to find dropper levers that don't require me to use my palm to drop the seat. luckily my shifting thumb still works well.
on this bandwagon as well. I'm digitally challenged (3 fingers RH, 4 fingers LH) and AXS is a game changer for me..... and... I didn't read @mikelevy comment - that's me! haha
Cedric is ambitious and that is great. Glad to hear there are companies willing to work with him too. Would be ideal if a company could engineer the front triangle to be the same between the standard and the Supre so only the rear would need to be different.
If there were a way to do it without the idler pulley/high pivot I think it would be even more exciting. But I understand the need to create space for the tensioner to move enough to take up slack too. But that will be a hurdle for more widespread adoption.
This product would be a great fit in rental and bike park fleets I bet. Could cut down on a lot of repairs.
I will be putting off any bike purchases until we see what comes of this.
@cedric-eveleigh: I’m basically in a similar setting as @Andykmn. As I approach 40, I’m finding myself less worried about ‘the next best thing’ and the lightest bike I can to just wanting my next bike to be as set and forget as possible. Lube a chain, service suspension when needed, and be done. I’ve been looking hard at a Zerode Kapito for the lack of maintenance and no low hanging RD up here in the PNW.
A Supre Drive in the 140 /140 travel area would really pique my interest. Best of luck with this!
I found this very interesting. One challenge that wasn't mentioned was that if the system uses standard Shimano cassette, chain, shifter and cranks, I think when companies buy those for a production bike they buy them as a whole set with the derailleur for a discount compared to individual pieces. Shimano may even make it cheaper to buy the whole drivetrain, and require as a term of sale that there parts be sold and installed as a system. I would consider building your own shifter and looking to use other parts from companies like praxxis, E13, Garbaruk or KMC to get around this. Don't want a competitor controlling your product.
Somebody should be paging the BOX people. Honestly, their widerange 9 speed cassette seems about perfect in this set up to me. I love my 10-50 spread, but I often find myself double shifting out on the trail, so I’d be all over less shifting, and maybe a less sensitive set up.
I haven't broken many derailleurs, but I've broken a ton of derailleur hangers. Seems like this would reduce that at the very least. Excited to see a few of these rolling around someday.
Derailleurs have been a problem? But have they? Safe to say I haven't been aware of that. In 14 years of riding I've ripped exactly one derailleur off my bike and that particular crash was so bad that the derailleur was the least of my worries.
Pretty happy w/ my drivetrain but would take a Supre I suppose
Anyway, can we maybe get one podcast that's just devoted to Henry's Incredible Sayings? Or how about a collected page so far of all his phrases like "2 inch grip on a 4 inch turd" or something like that - maybe just a rolling list link to all these. We need to see them all in writing.
Damn you kids and your smarts. Quit coming up with new designs and making me feel like I have done nothing with my life. Props to you and your drive towards bettering the sport. Success does not come without failure. You discussed the trials and testing you did. Keep pushing on no matter what anyone on here tells you. CHEERS!
Advantages: - It could save you from having to replace one broken derailleur every once in a blue moon
Disadvantages: - Proprietary system - Most likely less refined than competing products - Requires proprietary frame - Added complexity - Limits rear suspension design - Susceptible to dirt and debris
I feel like the Supre drive train is like people asking for a faster horse/carriage before the advent of the automobile. It’s trying to solve problems with an outdated technology. I’m not on board with gearboxes yet but I hope they improve. For now, I’m content with my current drivetrain. I have an NX Eagle on No new bike and an X01 on the other. Neither seem to be as crisp as a Shimano but they work for me and I never have problems other than the occasional tune up to adjust shifting.
It is... it's a great response for now, but definitely not future. There needs to be a more radical innovative answer to our drivetrain dilemma. Again, not snuffing the wind out of his design, I love it and would be stoked to own it, but I think there's more to explore in this space.
If gear boxes can reach their theoretical minimum resistance, they will still have more resistance than current chain-driven drivetrains. There's no big innovation left to happen on gear boxes...it's mature technology that's used in all sorts of machines. Sure, they could be made lighter, the added resistance will always be there
I'm with you, it's a nice system but it's the same overall, with even more pulleys and gears. Imagine the chain coming of on this. Plus it requires frame to be made differently which may impede some suspension design. Gearboxes remove the trouble of the chain tension and dirt getting in your system and some of them can be install on older bikes.
Chain drive systems are far from outdated and will not be going anywhere anytime soon as explained by @skylerd. They are the best compromise of efficiency, cost, user serviceability and modularity. Solving a primary reliability problem by moving vulnerable components out of harms way is a big step.
@taouin: Chains are really, really good at their jobs. Belts are far too inefficient, and there's no hope of a realistic bevel-drive of any sort coming good. Chains require care, of course, but nothing is as efficient and that matters when you put out as little power as the human body does.
@skylerd: Yeah, there would need to be a huge break thru discovery in material science or lubrication in order to change the existing max efficiency of the a gearbox. I mean some material science or lube break thru coming from automotive research or similar.
@mikelevy: I didn't meant to remove the chain, just that you don't need a the same tension system. You can have a chain on a gearbox system, no need to go belt drive.
Two podcasts in a week? I'm so confused. Is it Christmas already? Is it my birthday? I should be ecstatic but I am left so puzzled. I guess I should listen before some finds the error and it gets taken away.
It's a few extra links but definitely not two full chains. Shimano and others might start offering longer chains as high pivot bikes continue to get more popular.
@mikekazimer@mikelevy@brianpark - how bout an interview with the Supre developer? That would be an super damn interesting podcast & low hanging fruit in terms of: easy.
@mikelevy - I got punked! Dropped 2 shows in 2 days so I clicked what I thought was ep 89 and didn't even know ep 90 had dropped the very next day. Damn I'm thick...and stoked there's a new cast to hear.
He is a great engineer who invested a lot in solving really unimportant problem. I mean, would be great to have it, but why would any bike manufacturer would invest into it, I have no idea. You need a special rear triangle and an idler which will fit maybe like a few bike model. Why would you have a special drivetrain for and enduro and another for XC? The return is not worth the investment, sorry.
Everyone keeps harping on the design aspect of the derailleur being out of the way. To me that’s the minor benefit. The major is the consistent - spring controlled chain tension in all gears. I think that’s going to provide nearly chain-less suspension feel.
Just to be clear, there aren't more parts - the parts are just moved to a different location on the bike. I'm not sure how you know about the system's efficiency? Serious question
Also, there are some other potential benefits of Cedric's system beyond derailleur smashing. The constant chain tension and lower unsprung weight are both pretty interesting propositions.
Back when I lived in a crappy place with a bunch of dudes I used to make derailleur wind chimes with all sorts of broken parts to decoratively hang to impress the ladies if they were ever to come over (not very often haha!)...... I would seriously consider this system over a gearbox as well! I'm guessing it is probably a bit more efficient although it would require more maintenance.
Seriously, how many derailleurs have you broken in the last 8 years? Back in the 90's and early 2000's derailleurs generally sucked. I remember some hangers back in the 90's were part of the frame so it was much easier to break a derailleur straight off your bike. But, nowadays the soft aluminum hanger is way more likely to bend out vs breaking the derailleur itself. Usually you can just bend it back into place to make it back to the trail head. Perhaps your location/terrain plays a bigger role in how often you blow up your mechanicals? PB SURVEY PLEASE!
I bikepack in the boonies (ie chilcotins) so reliability is very important to me. So, even breaking one derailleur a year is unacceptable for me. Just my opinion sir!
Damn....that's a lot of derailleurs! I've lived in the north east (U.S.) for most of my riding and there hasn't been that many situations where I worry about killing my derailleur, even on shuttle and lift runs.
I'm not against innovation and improvement. One thing that struck a chord was not needing to worry about which side you drop the bike down on. It will be interesting to see the refined version and hopefully Cedric can make a non high-pivot version in the future.
While I was a bit confused by him dramatically saying that current derailleurs "EXPLODE ALL THE TIME", I do agree that this system, in premise, makes a lot of sense for MTBs. Similar how QR was adapted from road bikes but makes much less sense than rugged through axles.
Yes the podcast is great blah blah, but it's like....
... It's like have a Subway sandwich each week, to find out they no longer offer your choice of bread. It's still a good sandwich... but I liked the bread as part of it...
Great podcast PB, I listened to them all, saving them for while I did neck therapy. It's the little things that get you through the tough times.
i'll be following closely
If there were a way to do it without the idler pulley/high pivot I think it would be even more exciting. But I understand the need to create space for the tensioner to move enough to take up slack too. But that will be a hurdle for more widespread adoption.
This product would be a great fit in rental and bike park fleets I bet. Could cut down on a lot of repairs.
I will be putting off any bike purchases until we see what comes of this.
A Supre Drive in the 140 /140 travel area would really pique my interest. Best of luck with this!
Anyway, can we maybe get one podcast that's just devoted to Henry's Incredible Sayings? Or how about a collected page so far of all his phrases like "2 inch grip on a 4 inch turd" or something like that - maybe just a rolling list link to all these. We need to see them all in writing.
Advantages:
- It could save you from having to replace one broken derailleur every once in a blue moon
Disadvantages:
- Proprietary system
- Most likely less refined than competing products
- Requires proprietary frame
- Added complexity
- Limits rear suspension design
- Susceptible to dirt and debris
Solving a primary reliability problem by moving vulnerable components out of harms way is a big step.
I should be ecstatic but I am left so puzzled.
I guess I should listen before some finds the error and it gets taken away.
Also cool to see calm and collected Brian with such a man crush on cedric :-)
My guess is Brian Park (the industry guy) introduced Cedric to Rocky Mountain!
damper vs. dampener mtbyougoober.home.blog/2018/12/29/damp
That’s what I’m keen on