2Recommend a method to build P class Foils Where do I start?How are the competitive foils madeWhat is their design how do I know what shape to make themLook up The Tauranga Yacht Club, they administer the P classRules and Forms under, How to’sWe need to study the drawing and find out how the good foils are made
3Study what foils other p class are using How could I do that?Murrays Bay Sailing ClubKohimaramara Yacht ClubTrade meI suggest you do try to find P Class foils to look at, however in the meantime I can confirm that their foils are able to be made from any material including carbon fibreWhat is important in the design of the foil?Carbon foils will be stiff, is that a good thing?
4Lets set about making the foils We need to plan the profile shape, make a pattern.We need to decide on a foil sectionWe need to finalise our construction method, how strong do they need to be?What will the rudder and centreboard look like?What core would we be best to use?
5The ConstructionOnce the foil section is chosen female pattern shapes are madeOne off foils for racing dinghies will normally be made by shaping a cedar or foam coreThe cedar must be held true while the shaping takes placeThe shaping can be done by handThickness is importantChoose a laminate, carbon fibre cloth?
6Construction (cont)The laminate is used to hold the foil in line one side at a timeThe cloth is hand laminated, the cedar should be sealedCradle shapes hold the foil when it is turned overThe trailing edge is backfilledThe leading edge has an overlap
7Construction (cont)The shaping must be completed carefully The leading edge could be strengthened by using a solid fill, cutting the core back square Final surface before paint should be filler What thickness would the cloth, resin and filler be? What paint could be used How could we produce a competitive finish What areas of a foil may need strengthening What controls the depth of the centre board
8The Finished FoilsThey need to be well protected even the slightest marks have to be avoided to maximise the effect of efficient water flow on to the foil surfacesPaint them whiteDid we monitor the weight as we built the foils, how could we monitor the weight?What could they cost the client, how do we cost them?The End