Plane

Oct 2, 2008
3,811
Pearson/ 530 Strafford, NH
Hi all,,

Last year I posted a problem getting our dinghy up on plane. With the sage advice of this group I changed the Honda 9.9hp prop from a 4 blade 9" pitch to a 4 blade 7" pitch. I also had to trim the dinghy cover near the transom since it would drag in the water just slightly when I would open the throttle up. It takes a little time to finally get on plane but we are satisfied with the change. Our dinghy is supposed to have a 15hp by the Brig user manual but this will do.

All U Get
 
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Nov 26, 2008
1,970
Endeavour 42 Cruisin
Do you have a fin on the skeg? I added one to my tohatsu 9.8 and it made a big difference
 

Gunni

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Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
Take a page from the flyboys - weight distribution. It is hilarious having people lie about their weight.
 

SG

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Feb 11, 2017
1,670
J/Boat J/160 Annapolis
What is the "dingy cover" dragging in the water?

I'm not sure how reducing the diameter of the prop would make the dingy plane more easily?

What type of dingy; and how many more people?

I have an OLD Avon 9' dingy with an air-floor. It will plane with one person big person in it when powered by a 4 HP Mercury which is over thirty years old. It's just a "standard" Mercury (aka, I found out twenty years ago, Yamaha) outboard.
 
Jan 22, 2008
8,050
Beneteau 323 Annapolis MD
I meet up with All U and the Missus U when they pass through Annapolis. He weighs, what 180? Double that if he's carrying his wallet:)
 
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Gunni

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Mar 16, 2010
5,937
Beneteau 411 Oceanis Annapolis
I'm not sure how reducing the diameter of the prop would make the dingy plane more easily?
He changed the pitch, bringing the engine up to full power quicker. Diameter + Pitch
 
Oct 2, 2008
3,811
Pearson/ 530 Strafford, NH
I meet up with All U and the Missus U when they pass through Annapolis. He weighs, what 180? Double that if he's carrying his wallet:)
I think Ron's on to something. My Bahama wallet is lighter than the usual.

All U Get