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Deleted member 12676
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The research compared a non-squish head with 3 others with squish of varying squish velocities and the result was basically the same power for all but the stresses on the crank bearings varied a lot.
I know from riding my 100cc street bike down here in hot South America that 2 strokes lose a considerable amount of power at high heat. The squish band concentrates the main combustion towards the center, away from the piston edges which reduces heat at the rings which reduces friction which helps with power. It could be that the researchers (see http://www.dragonfly75.com/moto/SquishVelocity.html) didn't test for long enough times to see how with a squish band there is less power loss as the engine gets up to max heat.
I know from riding my 100cc street bike down here in hot South America that 2 strokes lose a considerable amount of power at high heat. The squish band concentrates the main combustion towards the center, away from the piston edges which reduces heat at the rings which reduces friction which helps with power. It could be that the researchers (see http://www.dragonfly75.com/moto/SquishVelocity.html) didn't test for long enough times to see how with a squish band there is less power loss as the engine gets up to max heat.