However, various valves have been adopted to ... the rotor and the output shaft. Compare that to modern piston cylinder engines, which have over 40 moving parts. Of course, in many iterations ...

While the poppet valves work well at low speeds, they are unreliable at high engine speeds ... by smlll connecting-rods from a small crank shaft or eccentric shaft running at one-half the speed ...

The faster the shaft turns, the harder the disk brake ... In a steam engine, the regulator adjusts a valve which keeps the engine within a certain speed range. In a gramophone it works a wee ...