Just a 3D model to demonstrate a way to convert a motors rotational movement into a linear movement. This is intended as a learning tool, however, the 'piston' arm can be remodeled to any shape or connector for a practical use.
-At full scale, the motor mount fits a motor with a circumference of 24mm.
-At 75% scale, the motor mount fits a motor with a circumference of 18mm.
-Here is a simple proportion for scaling:
x= The motor circumference(Unknown)
y= Scale Factor (ie. 50%, 125%, etc.)
The model pictured above is scaled at 85% to fit a 20mm motor.