This is a Delmag jumping jack. It was an old school method of compaction . How it works is that when the throttle is engaged, the diesel engine fires and unleashes a violent mechanical or explosive force that compresses and then releases the springs, launching the entire 60 to 100-kg machine into the air.

spring-loaded inertia engine for a Lada — how we made it

What’s in the Box? VW TDI Meets Turbo — Gas vs Diesel Tease

Best LS Engine for Chevy LS Swap and Racing

Mechanics Never Stop Learning

Why Do New Jet Engines Produce White Smoke?

Simulated engine failure during training. Practicing scenarios like this builds the habits and decision-making skills needed to respond methodically under pressure. In aviation, preparation matters long before an emergency ever happens. The student in this case reacted well given he is a newer student. #aviation #flighttraining #emergencyprocedures #studentpilot #cfi

LEGO Technic Racing Wheel Setup for Driving Games