Avadi has created a rotary piston engine, and it could be the biggest revolution in motorcycle engines

The American company Avadi has been working for several years on an engine that could turn the sector upside down. Under the internal name MA-250, combines simplicity and minimalism in the search for maximum efficiency, the lowest possible fuel consumption and proven reliability. To achieve this, the brand has developed a system that integrates four-stroke technology, but makes use of some previously unheard of technical resources.

In the words of Rick Payapresident of RPM Racing Engines, after testing the Avadi engine: “I’m really impressed with the engine… the whole concept. The dyno tests we did were really tough on the engine and it held up to everything. Reliability was excellent, it starts really well… To have something like this on paper and then turn it into something mechanical is incredible. At 16 HP and 22 lb-ft of torque, the efficiency was… 42%. At this stage of the project, that’s amazing.”

Avadi MA-250 engine in detail

But how is this engine really made up to offer such an amazing performance package? The answer is not given by the company itself, where they explain in detail what configuration the small MA-250 engine uses. In short, This has “a single cylinder with a self-centering rotating piston connected to a pair of counter-rotating, self-balancing connecting rods.”

The crux of the matter is that we do not have a conventional crankshaft. Unlike a standard combustion engine, «employs the rotary motion of the powertrain to eliminate the need for a traditional overhead camshaft-driven valve train.»

In other words, and as Ride Apart accurately explains: «Instead of connecting to a central crankshaft that then sends power to a transmission, the Avadi engine is connected to a central planetary gear, which spins a shaft (like a rotor) that then sends power outward.»

The result of this mechanical compendium is «minimal lateral pressure on the cylinder wall, which means less friction, heat and wear. The counterbalanced cams counterbalance each other, resulting in much less vibration than a traditional internal combustion engine.» This way there are fewer moving parts, which impacts the weight and final efficiency of the engine itself.

Avadi and its MA-250 engine could revolutionize the two-wheeled sector

For now, Avadi, after the various tests carried out on the engine, has managed to extract maximum power from 15.8 hp at 3,700 rpm and 30.24 Nm at 3,500 rpm. This means that there is still a lot of room for improvement, if the rev range can be increased without compromising the reliability of the mechanics.

With scarcely 10 kilograms of weightthis engine is designed to be used in the automotive sector, but also in other sectors such as power generators and even high-capacity refrigeration units. In addition, Avadi has already confirmed that this initial platform will be scalable, up or down, depending on the needs at any given time, which opens up a new range of possibilities that suggest a more efficient and clean future within the combustion engine segment.

Avadi and its MA-250 engine could revolutionize the two-wheeled sector

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