2 Blade vs 3 blade

AEROCOOK

Master Chief Petty Officer
Joined
Jul 28, 2004
Messages
872
I recently aquired a 15 foot ski boat with a 1974 mercury 1150 motor.<br />The boat came with 2 propellers, both are 21 pitch stock aluminum but one is a 2 blade and the other a 3 blade. According to my Seloc service manual the 2 blade prop would be faster on a light boat.<br />Are 2 blade props "outdated" as a top speed performance upgrade? Seems most of the high performance outboards I see have stainless 3 blade props.
 

Bondo

Moderator
Staff member
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Apr 17, 2002
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71,241
Re: 2 Blade vs 3 blade

Are 2 blade props "outdated" as a top speed performance upgrade?
Ayuh,........... Since about the 1960s............The Early 60s.........
 
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