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k9medic
05-14-2009, 10:04 AM
I have a 14.5x19p SS prop right now. I'm looking to get a 15x17P ss prop.
Will I see a change in speed/ RPM since I'm going down in pitch but up in diameter?
kchace
05-14-2009, 10:25 AM
If its the same brand and model of prop then yes - the rpm should go up. Whether the speed goes up/down or stays the same depends a lot more on prop type, current rpm range, etc. For example if the engine is overloaded with a 19P, the 17P could let the engine run more in its powerband and deliver more hp to the water. If the engine is already well within its powerband, then the extra drag of the larger prop spinning faster through the water may even cause the boat to run a bit slower - though your holeshot should be better.
Ken