Once known as Hartley18
Join Date: Aug 2007
Location: Melbourne, Australia
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Re: Is external rudder a good idea?
6. A lage wave crashing from behind, could induce higher stress to the ruddermounts
That's a fallacy based on the stern supposedly protecting the rudder from behind. Unless half your stern is dragging in the water, a large wave crashing from behind will put just as much
stress on an inboard rudder except that the stresses aren't visible from the cockpit and are transmitted into the rudder tube instead (not "felt" at the tiller so much).
Because it isn't protected by the stern, a transom-mounted rudder is certainly more likley to be damaged if you're not careful whilst reversing into a marina pen or when launching off a trailer (in which case you'd damage your stern instead), but, as ST pointed out above, for most people the advantages of being able to more easily fix a transom-mounted rudder outweigh any apparent disadvantages created by the location.
"Honestly, I don't know why seamen persist in getting wrecked in some of the outlandish places they do, when they can do it in a nice place like Fiji." -- John Caldwell, "Desperate Voyage"
Last edited by Classic30; 07-04-2013 at 07:54 PM.