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  1. hwsiii

    Yamaha 70 on 18' Custom Dory

    I am looking for information about the Yamaha props specifically about their 13" x 17" diameter painted stainless. I have a friend who has an 18' Custom Dory with a 7' beam that weighs about 1,800 pounds fully loaded. We have tried Yamaha's Performance series propeller in 18" and 16" pitch...
  2. hwsiii

    40 HP Outboard Power Curve

    I have a power curve excel spreadsheet setup for my 40HP outboard, but I do not believe it is correct. Does anyone have a known good power curve I could compare it to. I know they are all different, but in two cycles they should be fairly close. Thanking you in advance for your kind help. H
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