Diesel with a 2;1 transmission? I have a 11.5 x 8 Gori 2 blade folding on a 1:1 Atomic 4, and it is slightly "over prop'd".
The math for the pitch part of it is straightforward. ((( Pitch X "efficiency" X RPM ) / 12 ) X 60 ) / 6076 Assuming an efficiency of 85% and a shaft RPM of 900 ( engine 1800 ): 11 X 0.85 X 900 / 12 X 60 / 6076 6.9 kts On a 30-1 the largest prop diameter I would try without hearing some sage advice from this group is 15. The combination of down angle and offset with a large prop size might end up generating a lot of prop walk. Michael Brown Windburn C&C 30-1 Date: Sat, 31 Jan 2015 16:10:00 -0500 From: Alan Lombard <alan.lomb...@sympatico.ca> To: <cnc-list@cnc-list.com> Subject: Re: Stus-List Folding/feathering Props Message-ID: <blu437-smtp5d073604c0c4ddc30c80de6...@phx.gbl> Content-Type: text/plain; charset="us-ascii" Hello Gary, I too have a C&C 30 and am debating either a Gori or a FlexoFold. Do you remember what size Flexofold you have, and can you comment if it seems the right size. The recommendation Flexofold have made to me is 2-blade 15x11R. Thanks, Alan
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