1. Case 8, p class foils
The Mighty p class

2. Recommend a method to build P class Foils
Where do I start?
How are the competitive foils made
What is their design how do I know what shape to make them
Look up The Tauranga Yacht Club, they administer the P class
Rules and Forms under, How to’s
We need to study the drawing and find out how the good foils are made

3. Study what foils other p class are using
How could I do that?
Murrays Bay Sailing Club
Kohimaramara Yacht Club
Trade me
I 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 fibre
What is important in the design of the foil?
Carbon foils will be stiff, is that a good thing?

4. Lets set about making the foils
We need to plan the profile shape, make a pattern.
We need to decide on a foil section
We 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?

5. The Construction
Once the foil section is chosen female pattern shapes are made
One off foils for racing dinghies will normally be made by shaping a cedar or foam core
The cedar must be held true while the shaping takes place
The shaping can be done by hand
Thickness is important
Choose a laminate, carbon fibre cloth?

6. Construction (cont)
The laminate is used to hold the foil in line one side at a time
The cloth is hand laminated, the cedar should be sealed
Cradle shapes hold the foil when it is turned over
The trailing edge is backfilled
The leading edge has an overlap

7. Construction (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

8. The Finished Foils
They 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 surfaces
Paint them white
Did 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