Algodoo

Simple Spring motor with accelerator control.

2 Spring strengths controls the speed of this engine. This is the simplest way I could make this so it can be controlled with a simple script, using ~ variable scene.MY.motorSpeed

Both springs have a negative damning of -0.065 and a length equal to its full travel.

CONTROLS:
Right = Starter Motor
Left = Brake
Up = Accelerate
Down = decelerate

Credit to Kilinich for the RPM's, Makes life much easy...

Note: Algodoo only for the speed control. PHUN users can still use this engine by setting the (2) spring strengths/damning manually.

Its a shame springs are different in PHUN and Algodoo