Taking inspiration from model stationary engines (steam, pneumatic etc.), I wanted to create something in a similar vein but at the same time a little different.

This project is electronically controlled mainly 3d printed stationary linear motor, powered by 2 coils and a magnetic piston.

Where a typical solenoid uses one coil to move the plunger and a spring for the return this application utilised two coils similar to a Bistable solenoid without a latching position.

These two coils are driven in anti phase whereby when one coil is off the other is on.

The energised coil forcing the rod in towards or away from the centre.

The coils field in relation to the magnetic field can be orientated to attract or repel the magnets.

Driven from one common clock source (555 Timer or equivalent), with adjustable frequency and duty cycle enabling speed adjustment and coil/plunger compensation.