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Fri, June 21 2024, 23:30Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 123456[7]89 ]


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Date Posted: - Monday - 01/ 7/08 - 10:58am
Author: Mike M-40 #61
Subject: rudder design
In reply to: matts 's message, "Problem backing under power" on - Friday - 01/ 4/08 - 2:26pm

During conversations with Ida Sailor about building a new rudder for my boat, I have learned the Mariners have design flaws in the present rudder. The width of the hull at trailing edge far exceeds the width of the existing rudder and causes inefficiency. Also the distance between the hulls trailing edge and leading edge ot the rudder also causes inefficiency. Then there is the flat shape of the rudder which causes less steerage control at slow speeds. They suggested a modern design rudder which eliminates the area between the leading edge of rudder and the hulls trailing edge. Also, increase the thickness of the rudder with wing shape design. Their estimate for new rudder was approximately $3000.

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[> [> rudder design -- matts, - Monday - 01/ 7/08 - 3:14pm

Thanks, Mike.
$3,000 sounds swell and a likely solution, but I fear that it is a bit over the boating budget--at least for the (very long) time. I think I'll follow Randall's lead and put us on the waiting list for the other side of the dock, which is reserved for 40 footers and opens on the bay. Perhaps the increase in room and board is worth the extra margin of safety. In any case, it will let me back "Scandia" out of her dock for at least a quarter mile while I run in merry reverse circles.

Ought to keep the locals amused and puzzled about my true intent!

matts


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