Algodoo

A simple, 36 cylinder spring engine, with 4 gears.
(Because simple is sometimes better; I've plenty other complex spring engines anyway)

Hold Q briefly to go Rightward, and A for Leftward.
Gears are on 1, 2, 3, & 4, and are on Toggle - Deselect the current gear before going into another.

To engage the Clutch, press F.
For the Brakes, press S.

To stop the engine, press Z.

- Take it for a spin on my Boop Course, see what it can do. -