Algodoo

Here is my attempt at your challange. It's a 16 piston spring engine with my stabilization system built in. it's quite powerful for a spring engine if you get it tuned right.
I had to change a few things around. for some reason i just couldn't get your track to spin. I had to remake a track.
I make the controls how you wanted too.
press x to release the engine brake, then press s to start. it will probably start by itself. S just gets it spinning the right way.

This thing has a lot of torque for a spring engine, so it might to some wheelies

you can use the engine if you want.
its just held in place by a fix point I made large so you can see it. its really stable and wont go flying due to my patented "anti stall" system