This 3D Printed Rotary Engine Is Genius - Mazda RX-7
Learn How Rotary Engines Work Using A 3D Printed Mazda RX-7 13B
Why The Rotary Engine Died - https://youtu.be/v3uGJGzUYCI
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The Wankel rotary engine was made popular by Mazda, who built rotary style engines from in production cars such as the RX-7, RX-8, and others from 1967 to 2012. The Wankel rotary engine is unique in that it has three main moving parts, in comparison to piston cylinder engines which have many more. There are two rotors, and a single eccentric shaft which all rotate, rather than reciprocating like four-stroke engines.
This video looks at a 1/3rd scale 13B-REW engine which Mazda used from 1992-2002 in the RX-7, and it's power ranged from 255 to 280 horsepower. The two-rotor engine had a displacement of 1.3 liters, and sequential turbochargers.
Link To 3D Printed Rotary Engine By Eric Harrell & His Description:
"The model is designed so that you can see the moving parts of the rotary. All three of them. The center iron plate and front rotor housing are on hinges so the block can be opened up like a book. You can see the back rotor spinning and the you can turn the front rotor by hand when open. The eccentric shaft is sectioned into three pieces and held together with magnets and index pins, so that you can open and close the model while its running. The rotors are held to the eccentric shaft with magnets so that they don't fall out while the block is open. And they can be removed easily to see the eccentric shaft and fixed gears.
The back rotor contains an Arduino and color changing LEDs which simulate the combustion cycle in each chamber. The rotor is wirelessly powered by another Arduino circuit housed in the oil pan. The rotor syncs the LEDs by sensing a magnet in the housing so it speeds up/slows down the changing colors of the LEDs according."
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