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Dirt Bike Mods & Maintenance
Motorcycle Myth # 5 - You need big ports to make big horsepower
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[QUOTE="motometal, post: 1457456, member: 24727"] Thanks for the detail. Regarding the sonic boundries portion, I would guess some engineers and tuners have software that will help predict when/if this will be an issue, but otherwise just knowing this is a concern and what to look for is the key. Are you saying it's possible to exceed the speed of sound? On a related note, this can be an issue with .22 rfles, better accuracy staying subsonic. [/QUOTE]
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Motorcycle Myth # 5 - You need big ports to make big horsepower
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