Gas-Powered Pogo Stick Rammer Thingamabob [Restoration]

Welcome to the greatest thing you are going to see for a long time. This restoration is on a Barco BR-5 Rammer made by the Barco Mfg. Co.. This marvel of insane engineering is technically a 2-stroke motor with no rotation and two pistons. You read that right. The top piston sucks in air and fuel through the carburetor on the upstroke and that mixture ignites when the piston nears the top and trips the magneto, creating a spark at the spark plug. Springs pull the top piston up and you push the top piston back down. The explosion in the cylinder now pushes the lower piston out from the bottom of the machine. The lower piston just so happens to have large magnesium foot (why magnesium? I have no idea) attached to it, so the whole machine jumps in the air with each explosion. When gravity eventually takes over, the 200lb machine slams into the ground, completing its job an a tamper. Its job might be over, but the horror has just begun as the momentum of the top top piston slamming back down to the ground