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What Prop for 921 with Merc 4 stroke?
Wondering what prop everyone is using with the Merc 4 stroke? I've had my 921 elite for 1.5 years and have been turning a 24P Fury 3. At 2500' elevation I can only turn 5600 rpm and 69-71 mph just myself. Once I get 2 guys and livewells full I'm only seeing 65-68 mph. I switched to a 23P and gained 200-300 rpm, but not much speed. 12-13 on the atlas seems to be the best for me and my boat has lithiums and poles. Thanks.
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Elevation above sea level kills performance. You lose about 3% power for every 1000' ft. and need to drop 1" pitch at around 2000-2500'.
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