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Assignment America . . . Single vs. Twin Engine
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<blockquote data-quote="PATRIOT" data-source="post: 331435" data-attributes="member: 8891"><p>Assignment America . . . Compare the overall performance and theoretical top speed of two identical boats, one powered by a single 40HP motor and the other powered by twin 20HP motors, using these parameters, assuming the combined installed engine weight is identical :</p><p></p><p>40HP EFI 4-stroke</p><p>3-cylinder 747cc</p><p>Prop: 13.375"dia X 13"pitch</p><p>GearRatio: 2:1</p><p>RPM: 6000</p><p></p><p>20HP EFI 4-stroke</p><p>2-cylinder 327cc</p><p>Prop: 9.25"dia X 10"pitch</p><p>GearRatio: 2.08:1</p><p>RPM: 6000</p></blockquote><p></p>
[QUOTE="PATRIOT, post: 331435, member: 8891"] Assignment America . . . Compare the overall performance and theoretical top speed of two identical boats, one powered by a single 40HP motor and the other powered by twin 20HP motors, using these parameters, assuming the combined installed engine weight is identical : 40HP EFI 4-stroke 3-cylinder 747cc Prop: 13.375"dia X 13"pitch GearRatio: 2:1 RPM: 6000 20HP EFI 4-stroke 2-cylinder 327cc Prop: 9.25"dia X 10"pitch GearRatio: 2.08:1 RPM: 6000 [/QUOTE]
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Assignment America . . . Single vs. Twin Engine
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