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20 minutes – Innovative Varkel Coupé from Japan



In 1963, Mazda showed a project called L402A, a sports car equipped with a Wankel engine at the Tokyo Motor Show. It was the world's first sports car to see mass production with a 2 disc Wankel engine. In 1967, the car came in sales as Mazda Cosmo 110 S, but almost exclusively in Japan.

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In the early 1960s, Felix Wankel's rotary engine was regarded as a future technology for engine construction. Despite a fairly small number of parts, especially moving parts and relatively small dimensions, the Wankel engine achieved high performance values. Therefore, the design principle of a rotary engine seems to replace the existing gasoline engine in the medium term.

Challenge Wankel Engine

Several manufacturers, including Felix Wankel's employer NSU and Mercedes-Benz, Citroën and Mazda, have begun to develop this new-generation engine vehicle.

However, the simple Wankel engine did not have a problem. Engine sealing (keyword sealing strip) was a big challenge. Consumption was high and torque was low. Good performance was purchased with fast speed and corresponding background noise.

Modern technology

Mazda was one of the earliest licensors of the NSU Wankel engine and advanced in its production maturity and perhaps in the most consistent manner. One of the stories says Mazda engineers looked at the end of the pencil as they pondered about the weather strip problem. Maybe graphite was the solution.

Unlike the NSU with the NSU Wankel Spider with a single disc Wankel engine, Mazda created the Cosmo 110 S, the world's first dual disc Wankel engine sports car. Called the L10A, the engine has a chamber volume of 2 x 491 cm3. He delivered 110 horsepower at 7000 rpm. The latest version is 128 horsepower (engine L10B).

The engine was connected to a four-speed transmission. Maintenance work required oil change every 6,000 km. The vehicle has a trapezoidal wisdom front and a self-supporting body equipped with a De Dion rear axle.

USA – European Design

Visually, the new car looked different from what was used in the 1960s by the Japanese. The design showed elements of the United States and Italy, but overall it was quite fun.

They found a place in the 4.14m coupe. At 940 kg, the car is lightweight and delivers average performance over 110 hp. Short-range races of 0-100 km / h were completed in 8.7 seconds depending on the factory. The maximum speed is 185 km / h.

Sound and driving experience

The Wankel engine always provides a special background noise. This is no different from the Mazda Cosmo 110 S. Passers-by reminds us of the high-frequency tube of a two-stroke room scooter.

The Mazda 110 S can move very quickly, but it requires gasoline consumption. Stromberg Hitachi will be willing to pay 15-17 liters per 100 km of flow through the vaporizer. Mazda is much more durable than the NSU engine and has little sealing strips or temperature problems.

From 1967 to 1972, the 1519 Mazda Cosmo 110 S was almost exclusively sold in the Japanese market for right-hand use. To date, only 250 vehicles have survived. Four of them are known in Europe.


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