SOLENOID ENGINE
Solenoid engine is a great educational project for the understanding of basic concepts of electromagnetism, mechanics, reciprocating motion, timing and engines. The construction of the Solenoid engine idea is very simple: It is a “similar-to-combustion-engine” but powered by electricity instead of fuel.
Solenoids are powerful electromagnets made from an iron rod wrapped in coils of electric wire. When electricity flows through the wire, it turns the iron rod into a powerful magnet. When the electricity is switched off, the iron rod stops being magnetic.