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Brand new 2012 20hp 4stroke suzuki
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<blockquote data-quote="Pappy" data-source="post: 274283" data-attributes="member: 3278"><p>Theoretical pitch speed of the Merc at 6250 RPM. Note - Am going on the given prop pitch and gear ratio I read on these posts.</p><p></p><p>6250 x 10 x .465 x .0009469 =27.519MPH With zero Slippage. This would only be possible if the propeller was rotating through a solid......not water. </p><p>Normal slippage for these smaller engines is around 15% bare minimum.</p><p>So..............27.519 x .85 = 23.39MPH </p><p>Say what you want.....the math says otherwise and the math is not wrong. </p><p>In order to believe this there would have to be alot more pitch, a vastly different gear ratio, or one Hell of alot more RPM that what the RPM limiter will allow.</p></blockquote><p></p>
[QUOTE="Pappy, post: 274283, member: 3278"] Theoretical pitch speed of the Merc at 6250 RPM. Note - Am going on the given prop pitch and gear ratio I read on these posts. 6250 x 10 x .465 x .0009469 =27.519MPH With zero Slippage. This would only be possible if the propeller was rotating through a solid......not water. Normal slippage for these smaller engines is around 15% bare minimum. So..............27.519 x .85 = 23.39MPH Say what you want.....the math says otherwise and the math is not wrong. In order to believe this there would have to be alot more pitch, a vastly different gear ratio, or one Hell of alot more RPM that what the RPM limiter will allow. [/QUOTE]
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