Running at 100 hz, so there is no need to modify your sim frequency !
I started this engine nearly a month ago and made a little tutorial that I'll post on youtube...well instructions are in scene and I've never seen a spring engine of this kind, at least not at that scale and at that sim frequency...by the way hope you guys enjoy this scene, I'm very proud of it
Oh forgot to say that this is just a beta version so tell me what's wrong with it and I'll improve it on next version
Improvements that I would like to do:
- Anti explosion system: sometimes engine...yep, explodes, and this shouldn't happen

(DONE !)
- Graphics: I'm not good at it but well, I'll try...
- A more powerful engine
- Reverse gear
- A working sixth gear