sent in his entry into a “creativity contest” at his university. He and some friends put together this dry ice cannon. Take note of the creative mechanism they used to mix the water with the dry ice. A large amount of gas is expelled as soon as the two begin to meet. If the gas is supposed to escape through the same opening, it is difficult to get all the material through. They have added a second opening just for the exhaust during mixing. Great job guys. How about some downloadable plans.
Hack
Dry Ice Cannon
Automotive
Why Select Two Strokes?
In our previous publication, we touched on the subject of-stroke diesel engines.http:www.free-engineering.comfwezine.htm . Today, we askwhy we choose to use -strokes? As you might remember, for a -stroke engine, the piston has tomove up, and then down to complete one cycle of the engine. Inthose strokes of the piston, the crankshaft will have turned revolution. In those strokes of the piston the engine has alsocompleted stages of the combustion cycle – air intake,compression, combustion and exhaust.Now, compare that with a -stroke engine. The piston moving downwill complete the air intake stroke. When it moves up again, thepiston completes the…
