Algodoo

Linkage Ball Spawn Engine, for those wondering ("linkage" is because the rod actually is a linkage, like some sort of watt beam)
This engine is totally sick. It's not optimized nor anything, but it needs a speed limiter to prevent everything from exploding. Weights 200 kg, has 1x2 m, and gets to 120 rad/s at 100 Hz WITH the limiter. (the eight balls with very high density)
Dragster incoming