Quote:
Originally Posted by ottopilot
So acoustics, it's kinda like a 2 stroke tuned pipe but reversed pretty much eh?
I love 200 HP, not too slow and you can let the engine sing for a longer time before hitting overly stupid speed...kinda like a Ninja 250R
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Same principal of sound energy used for scavenging from the exhaust stroke. There is also wave transfer from exhaust to intake during overlap, plus the intake can generate an independent wave when the intake valve shuts on high velocity air flow.