Down wind, I can get 50 mph at 5800 rpm with my merc revolution 4 blade 19pitch, F250 yamaha, I cant imagine i would get much faster with a 3 blade.
Previous motor was a F225 and i ran a large 3 blade in 17 pitch.
4 blade is so much better for my 23 (lower plane speed, better bite in chop/turns, better MPG at cruise)
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