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Prop size. 188 ss
I am currently running a 14.5 X 17 Yamaha stainless prop. Turns 5400 r p m at 46 m p h. Would dropping pitch to 15 in. give me more speed? R p m's should increase about 200-250 to about 5600- 5650. Any ideas? What props are being run ? Engine is a 2017 Yamaha 150 4 stroke. 25 inch shaft . Thanks