GoKawiilDeveloper builds interactive animation showing what 9000 RPM engine speeds actually look like
A developer created a browser-based animation, hosted on his 'random tools' PWA collection, that lets users rev virtual engines up to 9000 RPM by holding the spacebar or gas pedal. The tool models four engine layouts—an inline-4, 60-degree V6, boxer-6, and flat-plane V8—each with accurate crankshaft geometry and firing order, and includes a slow-motion control to observe piston movement at 1/50th speed.