Many thanks for sharing first hand information about foils.
Some comments:
- Rudder foils may ride in the back wave. The effect is simmilar to having a longer waterline.
- Your foils seem to be symetric in section and horizontally placed (zero angle of incidence). Still, they generate upwards lift most of the time. Explanation: in order to form the back wave, flow in the stern is upwards. From the foil's point of view, this means a positive angle of attack. As a result, whenever the boat is horizontal or with a bow up attitude, your foils lift the boat from the water, reducing wetted surface.
- The concept of curved corner L shaped foils is to increase effective span. I don't know why and how. Learned that from articles about Cogito and Hobie's foiler. This shape deserves a try in the F14. Please!
I hope to be able to add information to this thread when my boat is launched. My rudder's foils are different, though. See the picture attached.
