10 - 50hp piston engine - L 550 EF - Limbach Flugmotoren GmbH & Co.KG - 10 - 50kg / 2-stroke / 4-cylinder
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15HP Air-Cooled Two Cylinder Diesel Engine Set (2V86F) - China Diesel Engine, Engine | Made-in-China.com
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Two-Piston Engine Detail
Fichier:Two-stroke vee-twin engine with pumping cylinders (section).jpg — Wikipédia
Pulling Piston Engine
Opposed Piston Engine with two cranks. - YouTube
Build A 2 Cylinder In-line Two-stroke Engine - YouTube
