Engine LD vs Engine Builder

Engine Layout Definitions (Engine LD) Understand how piston–crank geometry impacts engine performance. • Explore how layout changes affect engine displacement, rated power, and dynamic forces. • View detailed graphs and data lists: • Displacement volume vs. crank angle • Dynamic forces vs. crank angle • Export values for spreadsheet analysis or basic FEA (finite element analysis). • Interactive simulation: adjust crank rotation with a slider to visualize dimension effects on engine packaging.

Build real engines piece by piece. Drag the block, crankshaft, pistons, heads, and more into place, then press START and rev your engine with a slider. Made for kids who love cars and trucks, and for anyone who wants to learn what's under the hood. HOW IT WORKS • Pick an engine and drag each part from the tray onto the engine • Parts snap into place with a satisfying click • Finish the build to unlock the START button, then rev it up and watch the pistons pump • Every part is labeled, so kids learn real names like crankshaft, camshaft, and turbocharger 26 ENGINES TO BUILD Small engines: scooter, go kart, lawn mower Car and truck engines: V8s, an inline four, a flat six, a twin turbo six, a rotary, a V12 Motorcycle engines: dirt bike, sport bike, V twin, parallel twin Diesel engines: inline six, V8s, tractor, semi truck FOR GROWN UPS • No ads, no links out, no data collection, no accounts • Four engines are free. One purchase unlocks all 22 forever, plus every engine we add later • Progress saves automatically, so a build can pick up where it left off • Works great for adults too: a simple way to learn how an engine goes together before you turn a wrench on a real one Designed for iPad, works on iPhone.