Look at the rotary engine assembled from Lego piecesAugust 21, 2020
The prototype of the model is the Mazda 13B MSP Renesis unit
The authors of the YouTube channel Akiyuki Brick Channel decided to demonstrate the operation of a rotary internal combustion engine using a model assembled from Lego parts. The Mazda 13B MSP Renesis unit from the Japanese Mazda RX-8 coupe was taken as a basis, but unlike the prototype, the mini-motor received only one section.
The driving element, as in a real rotary internal combustion engine, is an eccentric shaft. For the Lego model, it was connected to a battery and provided with a red piece indicating the direction of rotation. After that, a rotor was installed on the shaft and a stationary gear was fixed, which sets the trajectory of rotation.
The gear ratio, or the ratio of the number of teeth of the larger gear to the smaller, was 1.5 (36:24). In this case, the rotor travels one third of the circle, while the eccentric shaft makes a full revolution around its axis.
The rotor and shaft were housed in a Lego housing with inlet and outlet holes. The single-section engine was equipped with two plastic “spark plugs” and a light bulb that simulates the ignition of the fuel-air mixture.
The 1.3-liter 13B MSP Renesis engine debuted in 2003 on a four-door RX-8 and produced between 190 and 250 horsepower. The unit immediately after its debut was awarded the title of “Best Engine of the Year”, and in 2004 the RX-8 earned the title of “Car of the Year in Japan”. Three years later, Mazda introduced the 16X, also known as the Renesis II, with a narrower rotor housing, direct injection and 300 hp.
Earlier on the YouTube channel Lego Workshop, also dedicated to the capabilities of the Lego constructor, a video with a model of a working variator appeared. To create a miniature gearbox, it took several dozen parts from a Danish designer’s kit.
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