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Old 02-05-2017, 21:11   #1
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Join Date: Apr 2015
Location: Bundaberg QLD
Boat: Leopard 38' cat
Posts: 27
Undersized props?

Are there any prop size experts out there please.I have 2 of 13"x12" fixed props on my 38 leopard sailing cat. They r behind 2.33 to 1 gearbox on a 38hp Yanmar shaft drive.The boat weighs about 11 tonnes loaded and it seems underpowered.The experts in Australia say these r the correct props.Has any other leopard owners got any comments please!
I would look forward to any input.

Peter Gazzard is offline   Reply With Quote
Old 08-05-2017, 20:45   #2
So many boats, so little time.

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Location: Channel Islands Harbor, California, USA
Boat: FYC Club boats, 22 to 40.
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Re: Undersized props?

Suggest you search and or post this in the catamaran thread, or propellers thread.
"Boats for sale" is only likely to get responses like this suggestion. ;-)

td0tz is offline   Reply With Quote
Old 09-05-2017, 09:03   #3
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Boat: Dragonfly 1000 trimaran
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Re: Undersized props?

Do your engines overrev underway?
That would be a good test imho.
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Old 09-05-2017, 09:06   #4
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Boat: Island Packet 38
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Re: Undersized props?

Why do you say it seems underpowered?
I have 40 HP in a 38' mono that displaces about 12 tons. I'd like more maybe, but its not underpowered.
What is max RPM at full throttle?

Are you trying to give the props away?
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