adding cup to prop

hangmhi

Recruit
Joined
Jun 22, 2014
Messages
2
Has anyone modified an aluminum prop on a pontoon boat? I ran Hydrostream performance boats years ago and we would add cup to the leading edge and trailing edge of the prop to increase prop grip. A side benefit was the boat "lift" would be increased also, creating less drag in the water. I'm thinking it would at least increase the prop grip on a float boat, but may not be worth the time and expense. Thanks in advance for any suggestions and info.
 

Frank Acampora

Supreme Mariner
Joined
Jan 19, 2007
Messages
12,004
Unless you have no prop options and you are ventilating for no apparent reason, cupping a prop on a displacement hull serves no useful purpose. Better to buy a prop matched to the engine and hull.
 
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