Building Sailboat Rudders
One spring we found rust weeping from a crack in our rudder.....here is how we fixed the problem: http://engineeringcraft.blogspot.ca/2013/03/adventures-in-.... One can engineer a rudder from scratch, however since you likely already have a rudder or know its dimensions from some source, i won't cover that issue here. if you are going to build a new rudder it is best to consider the characteristics of the old one and improve upon it.. Usually multihull rudders are much smaller than their monohull counterparts. there are four reasons for that: first, there are two rudders, unlike the single one on a monohull, so the lateral area is combined. second, a multihull will typically travel faster than a ballasted boat, therefore rudders do not have to be as large..
A new cci rudder can transform your boat for price appropriate dollars. loose pounds, get better feel, reduce maintenance, improve lift, reduce drag and re-learn the joy of driving your boat. old rudders often have large voids in the foam, heavy weight skins soaked in polyester resin (and frequently dry fibers too), and water saturated foam.. On a sailboat, as the rudder is moved to one side by means of the tiller or steering wheel, the force of the water striking one edge of the rudder turns the stern in the other direction to turn the boat. different types of rudders have different advantages and disadvantages. the type of rudder is often related to the boat’s type of keel.. This rudder blade (shown above) was for one of my designs. it was a new build, but the first to have a full foil shape allotment it's full length. previous versions had flat sided foil sections which are easy to cut by the novice, but not quite as efficient as the "full up" version..
