Thread: Jumping in with Both Feet on a 20 Seafari
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  #107  
Old 07-18-2017, 11:48 AM
SailorChlud SailorChlud is offline
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Join Date: Jan 2017
Posts: 359
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Denny:

In your response you mentioned: "your speed/rpm numbers sound about right for a 15"P prop, assuming your gear ratio is 2.0:1."

I looked it up and I have the large gearcase of M type, with 2.25:1 ratio.
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