The BMS will be programmed to cut motor power at 5% and only allow the CVT to work so you can get home.The only ebike I tried with an e-cvt only worked if power was on. Without power you rotate the crank but that’s all. For a city bike this is an advantage, being some kind an anti-theft device
What’s worth to mention is that both electric motors will provide torque to the chainring/pulley/rear wheel. If one motor would have only been used for changing the gear ratio, it would not be a very efficient system. In this respect, not much energy is wasted when varying transmission ratio. Even if the system is rather straightforward mechanically speaking, controlling it for proper feel/response is not something so simple. I would definitely try a eMTB with E-cvt to satisfy my curiosity.
GOBAO ECVT EMTB Mid-Drive Motor
- Thread starter slickrock
- Start date
Unfortunately I work numerous trade shows a year (CES, CEDIA, INFOCOMM, etc.) so I have a good perspective on the size, complexity, and cost of manufacturer trade show participation. I have to say, Gobao's Eurobike booth looks super impressive. They obviously are a sizable organization. This sparked my curiosity about the company.
People can dig into details about Gobao themselves but some points that stood out to me..
gobao-ebike.com
People can dig into details about Gobao themselves but some points that stood out to me..
- 1500 employees worldwide
- Strong R&D with 6% of revenue invested; and 650+ patents
- Highly automated “EV Level Automated Production” facility (>40,000 m²)
- Automotive-grade quality and testing
- European operations facility in Maisach, Germany
- Private equity-backed, in IPO registration. Raised around $48.7M from investors
x-series-new - GOBAO E-Bike Drive Unit
Complexity disappear Motor and transmission are combined into a single unit.
An automatic, continuously variable transmission takes care
of shifting, with an option for manual control. Precisely tuned.
Natural in the way it rides. Connectivity that makes sense Connected to your smartphone and...
gobao-ebike.com
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Gobao shifting controller
Their booth was the biggest at Eurobike and I think it was the most impressive too.
They told me they make a lot of electronic controllers for e-scooters. 60 million sold.
They told me they make a lot of electronic controllers for e-scooters. 60 million sold.
This Instagram story shows the difference in booth size compared to Avinox and Bosch. Shocking!
The Bike Studio on Instagram: "The bike industry is getting its biggest shake up since the introduction of the DJI Avinox drive system in 2024. Now the competition comes from Gobao. What are your thoughts on the direction of the industry?"
437 likes, 28 comments - thebikestudi0 on June 26, 2026: "The bike industry is getting its biggest shake up since the introduction of the DJI Avinox drive system in 2024. Now the competition comes from Gobao. What are your thoughts on the direction of the industry?".
www.instagram.com
Do you expect them to have any big brands onboard when they bring the eCVT to market?
Yes
All I needed to know. Thanks!
Rando_12345
E*POWAH Master
But didn't ZF also have a big presence 2 years ago then disappear?
Also I echo this feeling that my hype to get an M2s bike has been trampled by these mgu and 900Wh batteries
ebike-mtb.com
Also I echo this feeling that my hype to get an M2s bike has been trampled by these mgu and 900Wh batteries
When innovation puts buyers off
The Avinox MG Concept has everyone excited, but it's also making buyers think twice. Here's why rapid innovation has suddenly overshadowed the M2S.
ebike-mtb.com
The problem with the ZF is that zero OEM’s wanted to take it. Good product but not different enough to Bosch etc, and that year Avinox launched with the M1. They went head to head with that, and we know how that ended.But didn't ZF also have a big presence 2 years ago then disappear?
Also I echo this feeling that my hype to get an M2s bike has been trampled by these mgu and 900Wh batteries
When innovation puts buyers off
The Avinox MG Concept has everyone excited, but it's also making buyers think twice. Here's why rapid innovation has suddenly overshadowed the M2S.
These new MG eCVT’s are another step change. A new generation of motors. And a new wave of bikes will be designed around them.
From my position at the moment it seems that Gobao are further ahead in the development schedule and might get to market quicker.
Time will tell who ultimately has the better product. But I was seriously impressed with the Gobao.
I'm sure someone who understands batteries better than me knows why but my 1kwh powerbank charges at 1200w but the fastest current chargers are only 500w ish. Very welcome to see this 80% in 20mins!
so a few media people got to ride the GOBAO but the avinox equivalent was too early prototype to let anyone ride?
Be interesting to see if OEMS are willing to take the risk and be quicker to jump on this after missing out on sales delaying going to aviniox
so a few media people got to ride the GOBAO but the avinox equivalent was too early prototype to let anyone ride?
Be interesting to see if OEMS are willing to take the risk and be quicker to jump on this after missing out on sales delaying going to aviniox
Roughshod
Active member
I like how their slogan "the new new" was taken from the vacuum in teletubbies
I wouldn't admit to knowing the reference.
What happens when the battery dies?
We stop giving power when the battery reaches 10%. The system then only shift. Without power the ratio goes to the lowest and you can theoretically pedal.
We stop giving power when the battery reaches 10%. The system then only shift. Without power the ratio goes to the lowest and you can theoretically pedal.
Hmm, 10% is a fair chunk of battery to give up. Would be nice to be able to configure the percentage on a user level.
Mybrainaches
Member
I’m not sure the increase in range anxiety will compensate for the occasional rear mech issue.
I think many industry players were impressed and surprised. In my opinion, AVINOX’s announcement regarding its "concept" for the future MG motor was a reaction to the existing GOBAO motor. What I don't understand is why Canyon, Mondraker, and Commençal followed suit and produced prototypes. They haven't yet sold off all their bikes equipped with the M2 motor, and this could hurt their sales efforts (or perhaps I’m mistaken—is their entire production run already pre-sold?).
Maybe, but we've all got used to voltage compensation for continued support as the battery flattens, so 10% is just a made up calculation anyway.
On a bike with no voltage compensation 10% is already asking the really lazy electron pixes to actually come out and help a bit and on the whole they're not much use.
Remember by default (I think law, though I'm sure someone will correct me) Bosch used to blank of the last 5 or 10 percent so you would still have access to lights and so on (even if not fitted)
I'm sure we'll all adapt, we're not morons (discounting myself from that assumption).
Probably hype and views. Shows the public that their brands are working on the next ‘big thing’ and are involved.
Like concept cars.
As far as I can follow I see the main difference between Gobao's unit vs the Avinox unit in the system voltage. Gobao being a 52V vs Avinox with 36V. This is the reason for a slightly bigger Gobao motor(a 52V electric motor is bigger).
Interesting choice for their(Gobao) batterys must use some lower capacity cca 5Ah(high discharge current) cells for the 500Wh and the 750Wh packs and higher capacity cca 6Ah cells for the 900Wh pack.
There is one part that makes me wonder though, the efficiency. In electronically controlled variable transmissions(e-cvt) there are two electric motors, one main traction motor and the second/additional that produces the electric resistance for the gear ratios. Both motors use power from the battery. Is that going to affect efficiency? The additional motor does not use a lot of energy but it's there and in emtb environment it's going to do a lot of stop&go to adapt the resistance to the changes in cadence so the current draw is going to be sporadic which uses more energy than a steady running.
It's possible to offset the power draw from the additional motor with regen.
As I can see that can happen:
1. When you backpedal.
2. If you are coasting and the is some sort of mechanism that could lock the backwheel hub to the wheel/sprocket and that would run the main motor as a generator. Was wondering what MG actually means Motor-Generator or Motor Gearbox as it fundamentaly isn't a gearbox but two electric motors paired with a power split device(planetary gearset)
3. The third option would be a special rear hub with a generator(dynamo) built-in. Although this and the second regen options would create drag.
Is that good or not, IMO if implemented with regen controls(levels from off to max) on the handlebars it's useful say on a long decent you can use it to spare your brakes a bit and get some juice back into the battery. If that's something buried in the settings, yeah maybe for a casual rider.
Interesting choice for their(Gobao) batterys must use some lower capacity cca 5Ah(high discharge current) cells for the 500Wh and the 750Wh packs and higher capacity cca 6Ah cells for the 900Wh pack.
There is one part that makes me wonder though, the efficiency. In electronically controlled variable transmissions(e-cvt) there are two electric motors, one main traction motor and the second/additional that produces the electric resistance for the gear ratios. Both motors use power from the battery. Is that going to affect efficiency? The additional motor does not use a lot of energy but it's there and in emtb environment it's going to do a lot of stop&go to adapt the resistance to the changes in cadence so the current draw is going to be sporadic which uses more energy than a steady running.
It's possible to offset the power draw from the additional motor with regen.
As I can see that can happen:
1. When you backpedal.
2. If you are coasting and the is some sort of mechanism that could lock the backwheel hub to the wheel/sprocket and that would run the main motor as a generator. Was wondering what MG actually means Motor-Generator or Motor Gearbox as it fundamentaly isn't a gearbox but two electric motors paired with a power split device(planetary gearset)
3. The third option would be a special rear hub with a generator(dynamo) built-in. Although this and the second regen options would create drag.
Is that good or not, IMO if implemented with regen controls(levels from off to max) on the handlebars it's useful say on a long decent you can use it to spare your brakes a bit and get some juice back into the battery. If that's something buried in the settings, yeah maybe for a casual rider.
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Waynemarlow
E*POWAH Elite
The only way energy could be lost from the smaller motor is through heat (friction ) or for its energy to be absorbed in helping the main motor. In simplistic terms it’s far better to think that both motors are driving the bike forward as any excess energy beyond heat will be outputted to the drive train via the output shaft.
With modern plastic and highly accurate machine gears running on quality roller bearings there is minimal efficiency loss. I would say that in a way the planetary gears may have less meshing components ( friction ) than say the Pinion gearbox.
doochenozzle
Active member
Also possible Avinox asked them to produce something to show "how close they are". I think Avinox will be 6-8 months behind. it will be worth the wait if it has a smaller/better/higher form factor and if it's lighter...
I have wondered why Avinox doesn't adopt a higher voltage . Higher voltage equals smaller copper wire throughout the system.
Voltage vs motor size
In electrical engineering, higher voltage 52 vs. 36 does not automatically mean a motor must be larger. In fact, the opposite is often true:
Higher voltage allows a system to achieve the same amount of power (watts) using less current.
Less current means the motor can use thinner copper wire, with its windings while generating less heat, which often allows engineers to design a smaller or more lightweight motor for the same power output.
Pretty wild you guys still doubt the speed at which Avinox can put out product. I did get the gist that it’s well behind the gobao, but I have no doubts it’ll be refined and ready by early next year. Will it have first gen issues, possibly. If that risk concerns you wait for second gen and enjoy the early adopter reviews.
Plummet
Flash Git
Hopefully its a configurable % when it goes to market. There's quite a bit of range that can be milked on the last 10%. Im often in that range and would prefer to keep the motor in low assist modes until it dies, then be able to set a gear that's optimal for the remaining pedal home.
Cutting to manual at 10% effectively reduces battery capacity and ride window by 10%.
I perceive lack of efficiency and lack of gears when flat to be the biggest draw back to these designs. You probably need to run bigger batteries to get the same run time.
But I do desperately want to get rid of the derailleur....
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