@Johnnyynf yeah pretty sad its useless. the only cool thing is you can measure the thrust force with a dyno, i managed to reach sustained 70kg. not much but makes you wonder whats the best engine layout and piston count so even more stuff to experiment with

@tiltglory IK, i tried this idea in 2020 and have the same conclusion idea as you. I tried with a boxer and the external force is still bad. That's why I kept on doing with piston and controlbase instead of jet engine although it is actually cooler

@Johnnyynf i agree with the higher rate physics engine but the real problem is that in theory, this is an external combustion engine (lol) as the force thats pushing down the piston isnt pushing againt the head like in real life. the jets would just shake and move around any vehicle. maybe a boxer layout could cancel those forces tho.

your pfp is cinema

and people said costume piston engine is far fetched
Like it's so close we just need some little things like higher frequency physics engine, better connections and a way to output engine power