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I found this video instructive.
I used to own a Mazda RX-4 wagon with a rotormotor. It was deceptively quick. And that motor loved to rev, it was like an electric motor. You could just fling the tachometer needle around the dial.
Anyhow, it's been something of a mental mechanical blindspot for me as to how the force was transmitted from the rotor to the crank. This video helped. Especially the view at 8:40.
Also this video (which is ... it's not as tasty but still instructive) at 2:10.
Watching the position of the offset lobe of the crank "be pushed" by the rotor when the compression chamber was "behind" the lobe. It has been a stumbling block for me to separate the ring gear/crank gear function from where the power was being transmitted.
Anyhow, genius design, a treat to drive. I never owned mine long enough to bemoan the reliability problems. Still... quite an engine.
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Be Just and Fear Not.
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