Re: WOT vs. Prop Pitch
Hey all.<br /><br />I have a 1995 OMC Cobra SX Stren drive on a 20 foot sea swril. I have a 302<br />Ford V8 (5.0) inside.<br />my W.O.T. opertation range is 4200 - 4800 . I put a cavation plate on it<br />this year and really started to note<br />that i was running at 5,150 and RPM were rising a little bit more. So im<br />out of the Range this hurts my MPG<br />and the fact that i like to Cruise at top end more than pulling skiers ,<br />boats , etc... i want to go faster !!<br /> <br />Im running the Stock alum prop ( 15x17 ). top speed aprox 39 mph at 5,200<br />rpm (400 rpm out of range)<br /> <br />I relaize i need to change to at least a 19 pitch. But i do alot more<br />Crusing at 80% throttle or more.<br />So i would like to know what STAINLESS steel Props would Be best for my SX ,<br />i have heard that on the<br />SX stren drive you can gain 5-10% more power JUST by opening the Exhaust<br />Flow out of the Prop and bellows , RIGHT ?<br /> <br />I want this boat to be more of a top end crusier that CAN get better GAS<br />MPG. and have a higher top speed.<br />Thats why i wondered how a stainless prop at pitch 21 would do in my case<br />cause by theory i would still be at<br />about 4,400 rpm WOT fully trimed right?
