Revonte's ONE E-Bike Drive System Has an Automatic Transmission Mode

Jun 25, 2020
by Dan Roberts  
The Revonte ONE Drive Unit - opened


Revonte are a Finnish company offering a complete drive system for ebikes, but with a twist. The company was founded in 2018 they launched their system in August 2019, collaborating with battery manufacturer BMZ for their development.

The Revonte ONE system is essentially a drive unit and gearbox combined, removing the need for a traditional derailleur and cassette.

The gears can be automatically changed with the continuously variable transmission, or CVT, design. In the automatic mode the system adjusts to changes in terrain, like inclination and torque, changing down to a lighter gear by itself. CVTs have been around for a long time, perhaps known by many in car and moped transmissions.

There's also a traditional indexed gearing mode using the bar mounted, paddle shift control unit and the number of indexed gears available can be customized in their app. Revonte say this might be more applicable to a more technically varied terrain, where the system might struggle to anticipate the rises and falls in the terrain.


Revonte ONE


Their transmission uses a planetary gearset with dual electric motors, boosting the efficiency of the planetary system and allowing the motors to be independently tuned. It has been likened by some to the hybrid system used by Toyota and it would seem the first motor is directly applying torque to the output while the second motor is working as a modifier for the speed and torque. But Revonte are keeping tight lipped about a detailed description or look at the inner workings. Although, they have explained about how they arrived at their planetary dual motor system, citing the known downsides of derailleur gears and their view on the lack of differentiation in the other drive systems available to bike manufacturers.

The combined motor and gearbox design takes weight off the back wheel and puts it low and central in the bike. Something that could be interesting for full suspension ebikes.

The drive unit weighs 4.7kg and provides 250W continuously up to a maximum of 1,500W with 90Nm of torque. There's a 416% gear range at 60rpm. The battery comes in at 3.98kg.

Revonte are only offering a drive system, no actual bikes. Although they recently announced that three brands will be using the systems - Tunturi, Lavelle and the RS Development consultancy. The system is highly customizable, with Revonte even calling themselves a software company making hardware.

The bike manufacturer can determine the ride characteristics for the individual bike project, for example choosing something with more crisp and spritely acceleration or something with an abundancy of torque at low speeds for help with moving larger loads. The system is customizable by the rider too. Ride characteristics and assistance levels can be fine-tuned through their app. If you're a tinkerer you can take advantage of it, but you can also employ a set and forget rationale.


The Revonte ONE Remote


The system is operated by a simple and small controller. It has no screen and mounts to the right side of the bars, emulating the traditional shifter position and uses LEDs to provide the rider with just enough information about the system state. But you can also connect your phone to help display more information if required.

The drive unit has built in 4G connectivity and GPS tracking offering anti-theft options and bike tracking. For example, if someone steals your bike the drive unit can be programmed to be completely open or locked.

Revonte have even suggested at the inclusion of energy re-generation in the future, touting their system as already having the capability although you'd need to ditch the freehub in your rear wheel.

The Revonte ONE system offers a different take on the ebike drive system and it will be interesting to see if more, and which, brands use it in the future.


Revonte ONE Drive Unit



145 Comments

  • 181 53
 Next big innovation for Ebikes = a throttle
  • 18 101
flag fuckingsteve (Jun 24, 2020 at 18:13) (Below Threshold)
 Where did you get the impression this has a throttle?
  • 134 8
 @f*ckingsteve: where did u get the impression that he got that impression? Smile
  • 119 5
 @f*ckingsteve: are you steve, or are you his partner? Can't tell.
  • 13 3
 @f*ckingsteve: woosh!!
  • 14 16
 @neroleeloo exactly. When can we call e-bikes mopeds/scooters? Big Grin
  • 18 1
 @f*ckingsteve: name checks out
  • 17 1
 @f*ckingsteve: Damnit, Steve...
  • 13 12
 That was my first thought too. Next up they are just going to put a throttle and remove the cranks. Oh wait, they have those already. Lol.
  • 5 1
 @neroleeloo 'new Revonte TWO system' featuring 'rev grip technology'.... oh no wait a minute....
  • 9 12
 @bman33: they're already ruled as motorcycles under US trade rules. See rulings. cbp. gov/ruling/N307469
  • 18 0
 I'm anticipate a mini nitrous oxide too. When your competitor pedalling hard to the finish line. All you have to respond is "too soon" then bam.
  • 9 0
 @Varaxis: you should read that letter a little more thoroughly. It says that since the exclusion doesn't differentiate vehicle types, that electric powered bicycles qualify under the exclusion.
  • 8 0
 So much for SRAM and Shimano supporting e-bikes, their ebike parts will be E-relevent with this CVT.
  • 9 1
 @chyu: but then you’re gonna have to tear that 4G63 apart and replace the piston rings tuna boy fried
  • 6 0
 @chyu: As long as you dont blow the welds on the int.......on the...?...on the downtube..?
  • 9 0
 @chyu: and then the loser has to hand over the keys to their e-bike or else they'll get gunned down by the winners riding crew :-/
  • 8 0
 @chyu: I can see that you live your life a 1/4 mile at a time. For those 10 seconds or less...you're free.
  • 4 0
 @f*ckingsteve: Steve? What sort of name is Steve anyway?
  • 6 2
 ...And gas engines... Hopefully they will review the 2021 Honda CRF 450 next.
  • 6 0
 @legsmagee: Exactly. f*ckingsteve keeps giving us Steves a bad name.
  • 1 4
 Tosser
  • 1 1
 @TwoWheelMike: so you only read a little more thoroughly? The exclusion is from the additional 25 percent ad valorem rate of duty imposed on higher powered motorcycles.

Read the letter multiple times thoroughly, and you can begin to reverse engineer the concerns that Mr Meylor seems to bring up. Seems to be worried about it being classified under motorcycle, and the Director insists that there is no need to further differentiate, as it fits under a current definition without associated trade penalties. It's just a nomenclature thing.

There's a HTS code for two wheeled electric bicycle, but it refers to hoverboards and the OG segway, with two wheels not inline.

Just a bit a trivia. People can call them motorcycles, mopeds, scooters, or whatever. Shouldn't trigger anyone who recognizes the fact that they have low powered motors and are getting new laws specific to them. The 25% Trump tax was only recently reversed, last Sept.

P.S. mfgs pocketed the refund on backpaid tariffs, even after passing the cost onto consumers.
  • 27 1
 it has 4G connectivity...thank goodness it doesn't have 5G so it doesnt spread COVID around trails!
  • 4 0
 Yes! Whats the safe distance to stand away from a 5G e-bike?
  • 14 0
 @Warburrito: since the earth is flat, I would say around 30 feet!
  • 1 0
 *contrails
  • 48 27
 Automotive CVT transmissions are complete trash. They break so often they’ve funded 75% of the things I own. Seems like a terrible thing to do even to Ebike owners.
  • 4 3
 Lol
  • 15 0
 This isn't a belt drive. It's like a differential. Incredibly reliable
  • 8 4
 @hamncheez: the best. Yuge.
  • 1 2
 Haha
  • 23 2
 Lots of vehicles have reliable cvts
  • 5 0
 So you don't own a toyota do you?
  • 3 0
 @Tacocat13 this Toyota (it actually is exactly what the hybrid synergy drive is) style cvt is a great and simple idea.
  • 5 1
 The difference is that 150hp is over 111,000 watts. This system has to deal with around 5-700 watts depending how much the human is putting in.
  • 3 0
 The CVT in my last lawnmower lasted over 15 years. I should have mounted it on my bike instead of trashing it when I was done.
  • 2 0
 Think Toyota Prius, not Dodge Caliber. My understanding is that this drive system is very similar to the electric CVT used on many hybrids.
  • 1 0
 I'm willing to bet this is every bit as reliable as the reduction gears in traditional mid mount ebikes
  • 2 2
 To the people saying this is less power than a car... There are different sized gears and geartrains that take differently sized loads. Plus, talking about 150 hp, it's still a few 100 Nm of torque. Which is what does the damage in a drivetrain, not the power. And e-bikes have between 50 and 100 Nm of torque from the electric motor itself, plus the human power added to that.
  • 3 1
 @Primoz: This is NOT a belt drive (how nearly all CVTs work in cars). This is the same as Toyota Synergy drive. How often do those fail? It works exactly the same as a differential. How often do differentials fail?
  • 1 0
 Tacocat13 - CVT sucks only if you got a Nissan vehicle. Otherwise, they're good. Just don't get Nissan involved as they're famous for screwing that up.
  • 1 0
 @CSharp: This literally has nothing to do with car CVTs
  • 1 0
 @CSharp: Nissan Service people have dentist bike budgets because of CVTs!!
  • 1 1
 @hamncheez: I said that LITERALLY 5 posts above the one you replied to. And regarding the power/torque and everything was meant for the posts between my two posts. And if you read closely (closelier), you'll note I didn't mention any belts.
  • 12 0
 I would be mildly disappointed If there wasn't a top secret Pole X Revonte prototype roaming in the darkest woods of central Finland.It just makes sense on so many levels.
  • 4 0
 Wait up - I'll just pop out for a ride in the local woods and see if there are Smile )

Terve from Keski-Suomi
  • 5 0
 "If you wanna win, get the Finn!"
Mika Hakkinen Wink
  • 3 0
 @martin737: To finish first, first you must be finnish Wink
  • 23 15
 I want an ebike with a 150KW motor, forget 1,500w/1.5kw. I want an ebike with power of an elite sport bike. One that can throw so much dirt on XC spandex rides it looks like they shat themselves all over. Give me a real ebike none of this class 1-3 BS. I need something powerful to get there damn XC off my trails. Needs to have ability to also give hikers and horses a heart attack at noise of its electronic revs.
  • 1 0
 30 kW will do. Ask my yellow pig.
  • 12 0
 Made for people who can't drive stick?
  • 8 0
 That’s most of the USA
  • 3 0
 @CM999: The funny lever is my anti theft device. Not that anyone would WANT to steal my car anyway.
  • 8 0
 A combined eBike motor and gear system has been an obvious, but absent proposition for a long time. There must be a reason Shimano hasn't done something similar?
I know Continental did a 3 speed version (and even test rode one) that got canned just before production. Why is it so difficult to achieve I wonder? Is it the high torque?
  • 1 0
 High torque and low weigt combo probably (Pinion said that one of the reasons they took so much time developing was just that). Also there isn't much space to cram it all togeather, high costs, new bike standards... And one probable reason is there isn't a wide demand for automatic transmission.
  • 1 0
 @vid1998: Pinion still recommends pairing its gearbox with a hub motor.
  • 1 0
 Have you seen the size of Shimano's gearbox system (in their patent)?
  • 12 2
 THIS might actually make me interested in an ebike.
  • 12 0
 As both an eBike and manual bike fan, the biggest issue with ebikes are derailleur drivetrains. They wear out quickly, they snap if you shift two gears at once under load, and you're always in the wrong gear because you go straight from descent to climb so you have to carefully nurse your chain up-to the climbing gear without applying too much motor load. Using a planetary gearbox and additional motor to control the apparent ratio is a really clever way to fix the drivertrain issue and get a CVT at the same time. Plus you should be able to change gear with or without load. Excellent job guys. Take my money now!
  • 3 0
 @rojo-1: Agreed. I've been saying for quite a while now that I wish somebody would come up with something like this, I think you could have a bigger spread between gears and probably have 8 speeds in an ebike. The standard derailleur is awful on ebikes and in my opinion, is the biggest place for improvement in them right now.
  • 1 0
 @rojo-1: I discovered Revonte about a year ago, and I've been saying the same thing. The only issue/challenge is that it as a worse power to weight ratio, slighlty less efficiency, and a gear ratio of only 420%. I'm thinking of having a custom steel/ti frame welded up and ordering a developer unit to give it a try.
  • 1 0
 @hamncheez: Isn’t 420% enough when there’s a big motor doing most of the work?
  • 1 0
 @VtVolk: I've never owned and ebike so I don't know
  • 11 6
 Wait - if I add pedals to a ktm electric Dirt bike can I ride on mountain bike trails ? And roost my ebike friends after giving them the low wave ? Kidding. Ebikes are super fun, I test them when there was bike shows and intent to get one in the future. ( 4-5 years when things slow down and I need to keep up to kids ). We will reach a point , likely pretty soon where weight, battery, motor/ brushless technology negate the need to pedal as input that much. As power increases tires / components will follow and then at what point is it An electric dirt bike with pedals , instead of a mountain bike with assistance. Maybe it’s when we see them doing things nit possible on non e mountain bikes ? Pivot riders excluded ...
  • 5 1
 I was already getting worn out by getting on an e-bike and doing all this pedaling nonsense. Now I can eat a few extra donuts before getting on my bike since I don't have to shift.
  • 2 0
 Ive said this before, but really think this could be the future for a lot of bikes by combining gearing and assistance into one package that can be tuned as required for the specific duty. The dual motor set up makes a lot of sense here, similar to some very clever and efficient industrial gearboxes such as a voith vorecon ( voith.com/ita-en/214_e_cr168_en_vorecon-variable-speed-planetary-gear.pdf ) but instead of power splitting from one source, a second motor is used and can be tuned independently, very clever! I even like the design of the remote, screens just get in the way and ask to be smashed one way or another.

We need to embrace this new kind of thinking and step away from the incremental improvements of traditional bike design, just think of the money you'll save on cassettes, chains and smashed derailleurs!
  • 3 1
 So 20 years ago I ran a bike shop, and one day a customer came in with a Manitou Mach 5 which just wasn't working properly and our mechanic didn't know how to work on it.
So that same day I was in one of the biggest distributor's in the country and I asked him if he knew anything about forks. "I don't", he said "but our mechanic is an expert!" so this mechanic walks in, guy in his late 30s or early 40s and asks what the problem is. When he finally worked out I was talking about a suspension fork he said, "I'm an expert on bike forks, NOT motorbikes."
Sound familiar?
  • 4 2
 man I can't wait for automatic braking and droppers, then all I have to do is live stream my ride to my patreon followers and post my rides on strava for all to see! my wife karen and I love this sport we just picked up just last month!
  • 7 1
 1500W is a lot of W
  • 53 0
 My toaster is 1500W and it's slow as hell.
  • 6 0
 My ninja is 1100W, and it's noisy as hell.
  • 9 0
 My light bulb is only a 40w, but silent and quick to turn on.
  • 5 0
 @wcr: only 1,1kW? It must be a Kawasaki Ninja moped Big Grin
  • 6 0
 @verskis: ninja blender...
  • 2 0
 Great, how many former presidents do we need around here?
  • 1 0
 Sounds like a great idea. We are seeing 600hp put through similar designed planetary cvts in farm equipment already so the concept works not just in a Prius. I have a combine with a CVT drives for the feeder and threshing and it is trouble free. That is with a hydraulic variator rather than electric but the basic concept is the same. A planetary CVT with two electric motors is a great advancement for e bikes. Now to figure out how to do a planetary CVT for non powered bikes...
  • 1 0
 They have a simple motor to assist pedaling and it's simple enough with an onboard chipset controller for the motor, which is the most complicated part of the system. Now they add in more shit for things to break down. When you're stuck in the middle of nowhere 20-30 miles out, I'd like to see someone caring a bike home if the pedals don't turn that efficiently as opposed to using gears that we have now. Keep the shits simple!
  • 5 4
 Can someone make a pedal only version, no battery? That would be lovely.

What would the acronym be for a traditionally powered bike? T-bike, L-bike, M-bike, Eff-bike, lots of options there.
  • 1 0
 "1,500W with 90Nm of torque" 1,5kW is just 2HP but 90Nm?!?! vw up has 95. This is just a bicycle.
I know this is gearbox output but it is huge amount... something is wrong here.
  • 3 0
 Nothing wrong here. E-bike motors have to work at the same output RPM as the riders cadence (unless you do strange things like Bosch did and run a tiny chain ring). Humans have a very low cadence and a very high torque. 90Nm is equivalent to putting 52.5kg on the end of a 175mm crank arm. Most of us do that pretty easily.

Another thing to consider is that the torque is measured at the crank, not the motors main shaft. That means a low torque motor is geared down a long way to get the torque and rotational speed correct. Car engines are measured at the crank which is then geared down hugely to get the torque up to a level that can actually move a car. Finally, at the end of the day torque measured in any arbitrary place is just a comparison tool, the only thing that really matters is force at the contact patch between the ground and your tire.
  • 2 0
 Ebikes need a gearbox of sorts. This is the beginning of better ebikes. And the extra drag from the gears won't be a problem.
  • 1 0
 when will Tesla be porting their Autopilot on e-bikes? All this riding is annoying, I want my bike to ride itself on the trails while I enjoy a couple too many beers at the local pub.
  • 1 0
 416% gear range at 60rpm? Electrically coupled drive trains loose a lot of energy in the conversion from mechanical to electrical and back again.
  • 4 0
 It is not electrically coupled. It is a planetary gearset. A planetary gearset has 2 inputs and one output. So you and one motor are putting a combined inout into that planetary gearset and depending on how fast the other motor spins in relation to you you get a different output rpm amd torque. You only loose what you would loose through gears anyways plus the slightly higher losses of the second motor. That is compensated by the better efficiency of the system because you can be in the optimal rpm range all the time.
  • 1 4
 @Paradan09: love it - you can explain the difference between an electrically coupled and planetary gear box but don't know the difference between "lose" and "loose". I certainly would prefer to "lose" a couple of watts through mechanical interaction than have something "loose" in my planetary gear box.????
  • 1 0
 @Paradan09: "416% gear range at 60rpm" rotational speed should not give you a different gear range.
  • 1 0
 @andrewbikeguide:
I could have made up an excuse like “it was my auto correction” or something but matter of fact is the explanation is even easier. I am a mecatronics engineer but not a native english speaker and I messed up the spelling. Happens every now and then...
  • 1 0
 @bjorntsc:
Not sure I follow. They state the gear range at a certain rpm, because of the system design. If the second motor had unlimited power and torque the gear range would be the same at all rpm. If the rider puts in either too much torque or too much power the second motor just can’t modify the secondary input rpm enough to get to the same 416%gear range. System design looks like Toyota Hybrid Synergy Drive. I think the patents around that system expired around 2010 or so.
  • 4 5
 The essence of cycling is to be able to move with 100% one's own power or effort. What many call e-bikes is in essence a Human Power Assisted Electric Motorcycle. I wish Pinkbike and all cycling news outlets stopped covering this type of vehicles and let them have their own media outlets.
  • 5 2
 What are your feelings on uplifts and lift access? If your ok with them then you should probably be ok with ebikes, it’s just another form of taking a capable bike up a hill to shred back down.
  • 4 1
 Says who, you?
  • 4 1
 @johnbalz: maybe, just applying the logic that using a shuttle to carry your mtb to the top of the hill is hardly 100% human powered. On the descents the motor on a ebike does nothing so am I now 'properly' cycling again?
  • 1 0
 @bluerocketboy: My feelings about lifts are exactly and have been the same as as about e-bikes. If don't want to pedal then don't ride a bicycle. Shuttles. I used them only on trails that are point to point not loops. I will not ride 20miles on pavement to ride 5 miles on single track.
  • 1 0
 @konrad1972: It’s definitely not that I don’t want to pedal, I love standard bikes and ride them often it’s really that I love love love riding twice as far and getting twice as many laps in the limited time that I have. The type of bicycles I like to ride the most really need pushing to the top which I really dislike. Maybe they possibly shouldn’t be considered bicycles but a motorcycle is very far from what I would enjoy riding so I guess ebike will do as a description for me.
  • 4 1
 Another step in dumbing down the ride
  • 2 0
 Just learned the existence of 3 new bike cie unknown to me.
  • 5 2
 This is really cool
  • 5 2
 Why even pedal?
  • 1 0
 Woah, over 8.5kg for drive and battery pack, minus maybe 2kg for the removed parts.
  • 2 0
 Wow. Virtually no marketing buzzwords. Looks a lot like the Fazua system.
  • 1 0
 If the gearbox is too week to take both inputs, just add another motor to the output. Genius.
  • 2 1
 When are they going to start put foot pegs instead of pedals? It's about time!
  • 1 0
 Its quite interesting for me the appeal is to have the option- eco mode for riding with regular bikes and improve my fitness, boost mode for when I have an hour to shuttle to the top of the local bike park as many times as possible. Also they do sell electric MX bikes which are awesome but they have all the restrictions of regular MX bikes with regard to trail access etc so aren't really of use to me.
  • 2 0
 *Finnish
  • 2 1
 CVT?! Soccer moms rejoice!
  • 2 0
 This is the way.
  • 7 10
 Big sign at the bottom of the trail “No E-bikes”, continue to get passed on the climb by bro’s in their e-bikes who then don’t yield to uphill traffic and zip past you sweating and panting while they’re goofing and shit. f*cking criminals.
  • 14 4
 Sounds like you need an ebike.
  • 4 0
 @bigtim: I'm mostly being facetieous, I actually have no issues with e-bikes and think they're really cool and likely will get one when I'm older and more decrepit. I do have a problem with people blatantly ignoring posted signage/rules and failing to show common courtesy on the trail, especially fellow mountain bikers because it reflects poorly on us all in the eyes of other user groups and decision makers.
  • 1 1
 I automatically mistrust anything with a fake French sounding name. Why not just call it Revonit.
  • 2 1
 Uh oh here comes all the haterzzzz
  • 1 0
 This is what makes time travel possible.
  • 2 3
 All you shittards talking about the future should try a moto, it will mow over your shite eTurd like the fecal matter that it is.
  • 1 0
 so one motor is not enough now? Big Grin
  • 1 0
 Very exciting development. Nice to see so much R&D out there.
  • 1 1
 for when you cant be assed peddling or changing gears??
  • 1 0
 Chainring is to small.
  • 2 1
 nope Smile
  • 5 6
 i need this motocross.
  • 3 5
 Who gives a flying f-
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