Piston Piston Engine i4 Tutorial (Plane Crazy Roblox)

Watch this for power upgrades on this engine: https://www.youtube.com/watch?v=wQBpmkQcf7E 1/11/2026 EDIT: The Double-P engine was actually invented on 12/22/2025, not 12/23/2025. This is a Double-P engine (Piston Piston Engine) and it was invented by papi (ObsidianNathan2) on the 23rd of December, 2025. This i4 was custom built by me off of papi's invention. By the time I'm making this video, this engine type is only 8 days old. NOTES: -Engine type invented by papi (ObsidianNathan2) on 12/23/2025 ENGINE NOTES: -Double-P engines are very simple as there is no visible timing system (papi still doesn't know how they work as of 12/31/2025) -Double-P engines have high torque but low rpm (normal designs are all around 400RPM while some go as high as 800RPM) -Double-P engines work better in crossplane rather than flatplane (less vibration, better torque) -Double-P engines can run in both directions so I recommend using a motor starter like the one in the tutorial -Double-P engines have no throttle either which is why I nickname it "old two stroke diesel" -You need a comically heavy flywheel for most Double-P engines to run -Hinges on Double-P engines should be painted fabric for less vibration (wood has more vibration) -For each block of radius of the crank you add one piston block with 3.106 distance -The formula for piston block distance if you want to vertically stack them is (number of blocks offset from crankshaft pivot*3.106/number of piston blocks on each cylinder) e.g. if the offset is one block from the crankshaft and you want 2 piston blocks for each cylinder the distance for each piston block would be 1.553. Keep in mind the max distance for a piston block is 4! Timestamps: 0:00 Intro 0:28 Building 4:40 Testing 4:52 Outro I think this is the first tutorial maybe YouTube video ever on this new engine type!