The Simplicity is a two stage blower. They are chain and shaft driven. The main front impeller has a space in the middle about 4 inches wide. The secondary impeller has three hard rubber paddles mounted on a flywheel that scoop the snow out of the front impeller housing and throw it up the shoot. It will also pick up and throw a rock through your neighbors window(another reason why they stopped making them). The drive shafts are inch solid steel. The sprockets are welded to the shafts. The secondary impeller sprocket is 6” diameter that drives the front impeller shaft with a 3” diameter sprocket. Therefore, the secondary impeller spins at a rate 2x the front impeller. Everything needs to be greased and lubed.
It is a Wickedly dangerous machine. There is not another snow blower design built like it to my knowledge. I think they were a huge liability issue.
Sounds like a fully automatic catapult. Great for your everyday siege warfare.
Ok, I get you.
Our unit for the front of the tractor was simply a high speed auger with a scoop in the middle that threw it up out the chute. It was necessary to run it at high speed to do that.