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Results from 3 to 4 blade upgrade
#1
Recently went to 4 blade Acmes on my 37 Open from original 3 blade equipoise and difference is amazing. Stuck with the 24x26 based on recommendations from Acme and picked 1.5 - 2.5 kts across the board.  Now running 23 kts at 2300rpm and 31 kts wide open and turns my 2825 rpm.

Biggest difference to me is how smooth the boat is. Been chasing vibration for a couple years and is completely gone and quieter.  Also had a strong vibration in reverse which is also gone.

Gets on plane much quicker and at less rpm and can really feel the wheels grab when accelerate.

Definitely worth the $$ over rehabbing 20 yr old props.
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