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What it does

The RatioZero is the first industrial grade gear-based Continuously Variable Transmission (CVT). It offers all the benefits of CVTs – infinite ratios, perfect matching to any engine, stepless ratio variation even under load – plus a couple of decisive advantages:
  • an efficiency on par with gear transmissions
  • a straightforward way to automate the transmission
The RatioZero is the first industrial grade gear-based Continuously Variable Transmission (CVT). It offers all the benefits of CVTs – infinite ratios, perfect matching to any engine, stepless ratio variation even under load – plus a couple of decisive advantages:
  • an efficiency on par with gear transmissions
  • a straightforward way to automate the transmission

How it works



Join the Stepless Excitement

The RatioZero technology is running the last mile, from advanced prototype stage to full maturity. This involves a number of tests (the main ones being durability and NVH), but will allow us to demonstrate the viability of this solution to the big manufacturers and technology suppliers of any market, and finalize the discussions to sell the patent and relative know-how, which is our aim for this project.
But excitement isn’t over, as in the process we are working to build a version of the RatioZero for a Yamaha TMAX, the king of performance scooters, to show its benefits on a paramount application.
So want to join? Leave your name and contact below, and we will write to you as soon as the crowdfunding campaign will be active. You will get a share of our company and be a part of our journey. We will keep in tough with any technological and commercial development, and have more than a surprise for you!
The RatioZero technology is running the last mile, from advanced prototype stage to full maturity. This involves a number of tests (the main ones being durability and NVH), but will allow us to demonstrate the viability of this solution to the big manufacturers and technology suppliers of any market, and finalize the discussions to sell the patent and relative know-how, which is our aim for this project.
But excitement isn’t over, as in the process we are working to build a version of the RatioZero for a Yamaha TMAX, the king of performance scooters, to show its benefits on a paramount application.
So want to join? Leave your name and contact below, and we will write to you as soon as the crowdfunding campaign will be active. You will get a share of our company and be a part of our journey. We will keep in tough with any technological and commercial development, and have more than a surprise for you!

CROWDFUNDING LAUNCHING SOON!

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Who We Are

We are a team of passionate people, mostly engineers, based in Italy and committed to bring innovation to the market. The RatioZero is our most recent project but we have already worked in the fields of vehicle suspensions, brakes and engine. In these years we have established sound contacts with the industry, which likes out open-mindedness and ability to scout and develop new ideas.



The Project

Since 2018, Alter Ego is working on the RatioZero patent to take it from a preliminary stage to a fully demonstrated technology.
This has involved many aspects:
  • a study of the kinematic properties of the system, carried out with the help of Milan Technical University (Politecnico di Milano);
  • building several working prototypes of the system to perfect its ability to stand and transfer high torques, change ratio under load, be silent and smooth and so on;
  • a preliminary automation of some of the RatioZero prototypes to test its response and feeling on a bike (both muscular and e-bike);
  • a preliminary study on industrial production technologies and costs.
Now AlterEgo is looking to gain momentum with new investors, to develop one further application on a high-performance scooter (Yamaha TMAX) while discussions with OEM and Tier I suppliers are carried out on the several possible markets (automotive, motorcycle, bicycle, wind turbines, power tools, and so on).

Download the project

The Patent(s)

Many attempts have been made in the last decades made to build a CVT based on shape couplings (gears/pinons/shafts/chains), but with little success – especially when costs are taken into account.
In 2015, Edyson Pavilcu started to devise a CVT based on shape coupling. He made several attempts with different kinematics, and in 2016 he had the breakthrough idea for a CVT based on a modified planetary system.
The breakthrough consisted in splitting the rotation in portions and using one satellite for each portion, turning it off in the other portions via a freewheel. The torque is efficiently transferred through gears, freewheels and a four-bar mechanism, which re-construct the gear rotation with variable ratio.
The principle of “split rotation” is so new that it led to 2 separate patents, both very sound and large, granted at international level. These patents are the foundation of the RatioZero project.

Downlad the patents

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