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Old 06-07-2011, 05:08   #1
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Join Date: Oct 2010
Location: Perth west australia, Indian Ocean
Boat: Samson C-Falcon 41'9" composite ketch (designed by Cece Norris)
Posts: 226
Prop for Perkins 4236 ?

hello, I was wondering what process to go through in order to select a prop for rthe new engine, due in a few weeks....
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Old 06-07-2011, 05:27   #2
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Join Date: Dec 2010
Location: Cruising the Caribbean
Boat: Baba 35, Play Actor
Posts: 119
Re: prop for perkins 4236?

Use Google to find the Michingan Wheels website, as well as the Campbell Sailer (sic) website. Fill out the questionnaires, and you'll get a response. A local propeller shop is also worth a try. There's as much art as science involved, so it's worth getting several recommendations. We just went through this and finished up with a Cambell Sailer a few months ago. It's an unusual prop, and we're quite happy with it. Details are on our blog toward the end of the engine replacement story.
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Old 08-08-2011, 13:04   #3
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Join Date: Jun 2009
Location: Auckland, New Zealand
Boat: Davidson 46, 14m LOA
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Re: prop for perkins 4236?

We have a Perkins 4.236 with a Hurth HBW 360 A2 gearbox behind it. We're running a 2.22:1 reduction in the gearbox. The designer specified a 3 bladed Maxprop feathering propellor 22"in diameter with a pitch of 15".

We get 6.5-7 knots at 1600 rpm sipping about 4-5 litres/hr (1.1-1.3 gal/hr).
The problem with doing nothing all day is that you're never sure when you're actually finished.
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