2 Stroke basics (chainsaw version) as the piston rises a vaccum is formed in the crankcase pulling gas/oil/air mix into the crankcase. This lubes the bearings and cylinder walls. When the piston reaches tdc ignition occurs driving the piston down making power, and pressurizing the mix in the crankcase. As the piston travels down it uncovers the ports allowing the burnt charge to excape out the exhast port. then the intake uncovers allowing the pressurized mix, from the crankcase to move in the cylinder. The piston travels back up and the cycle starts over again.
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Today's Featured Article - Farmall 460: That's My Girl - by LeAnn R. Ralph. How many sounds can you think of that are as familiar to you as your own breathing? What about the hum of your refrigerator? Or the thump of your clothes dryer? Maybe the engine of your car? You hear those sounds every day, and you don't think much about them, do you. I can think of a few common, ordinary sounds in my daily life, too.
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