Julius Kubinsky

Julius Kubinsky was a Czech Formula 1 constructor from Brno.

He attempted to enter the 1949 Czechoslovakian Grand Prix with a Lancia-powered car he constructed. He had to withdraw from the race due to damage sustained in a collision with a truck.

In 1955, he bought two Formula 1 cars, an OSCA and a Bentley-OSCA from 1953. He modified them and rebadged them as JK Mono-Tatra. The OSCA-based car was entered by him for Jaroslav Vlcek in the 1955 Soviet Grand Prix, while the Bentley-based car was purchased by the State Committee for Sports and Body Culture of USSR and entered for the same race. In the race itself, Jaroslav Vlcek finished 12th, and the other JK Mono-Tatra that was entered by the State Committee for Sports and Body Culture of USSR finished in 11th place. In 1956, Kubinsky modified another ex-OSCA design, in this case, the OSCA from 1954, and renamed the chassis JK Mono IV, and the engine Wartburg 310, signing DDR F3 champion Willy Lehmann to drive the car, with the JK Mono-Tatra combo being entered again, with Jaroslav Vlcek returning in the wheel.