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The animated gif you posted shows a normal third port induction two-stroke engine cylinder, as used in many two-stroke engines, but with a closed bottom end and linear reciprocating connecting rod rather than the usual crankshaft and nonlinear oscillating connecting rod. This type of connecting rod results in simple harmonic motion, which has several advantages in some applications. It is used in many very large engines and also in free piston designs which drive hydraulic pumps or those engines that only drive a turbine from the exhaust. (And of course this rod design is also used in double acting steam engines.)
Thanks for your encouragement! And I must confess that one of my all time favorite vehicles was the '55 Studebaker President Speedster. Awesome machine and precursor to the supercharged Golden Hawk ............another one of my favorites.
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