Improved version of my other piston engine. My other piston engine would stall a lot and it didnt run smoothly. I made some changes to improve the efficiency and to make it run a lot better. Because of how smooth it runs now, you can slow the pistons as much as you want and it will still work. Just make sure not to stop the engine in the original starting position or it might rotate the opposite way. The engine now includes a prop that is driven by the pistons. When trying it out at first the single piston couldn’t spin it by itself very well. So when in need.... add more power. The second piston’s crankshaft is connected to the first piston’s crankshaft. This means the two pistons wont get out of timing. Unfortunately the pistons can’t go much faster than they already do or else they will start glitching. This limits the amount of power you get out of the engine and I’m guessing you won’t be getting an airplane off the ground with this. But otherwise it’s a cool proof of concept and I hope you enjoy. Happy flying and upvote for more.