I thought I’d do a bit of a write up about this part of an animation I have recently finished. This above loop is made to represent the engine from a WWII fighter plane. I had to learn quite a lot about how these engines produce power before attempting to animate it. The radial design must produce an incredible amount of torque, due to the fact that at any given moment there are at least two to four pistons on the power stroke.
Anyhow, the main issue was making sure the sequence could be looped. this required dividing up the combustion chambers into 12 increments to create a smooth flowing motion. I then made a piston out of paper and cut it out, using it as a stencil. Once measuring of each piston was completed I went on to draw the respective pistons to look like metal etc. The other little moving parts are purely for aesthetic interest.