Crankcase oil ?

snowfish

Member
No oil in the crank case. The gas/oil mixture passes through the crank case & up into the cylinders. This mist coats the bearings & cylinder walls.

http://www.youtube.com/watch?v=LuCUmQ9FxMU

Amazing how that little amount of oil lubes the crankshaft & related components. That's why either roller or ball bearings are used in 2 strokes.
 
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