This got me curious:
https://www.facebook.com/bestofsailing/videos/1337434209628280/?hc_ref=NEWSFEED
Has anyone ever thought of, or experimented with, putting hydrofoils on a CLC boat? I recognize all the factors working against this idea, just curious.
Also, even if it would be nearly impossible to have enough mid ship foil and wind power to lift a dory, what about a slighly foiled rudder to provide some (but now a lot I realize) rear end lift. Many seating configurations for two people tend to make a NE Dory bow-high from the water line, so any lift that could be provided by a foiling rudder might help couldnt hurt to get the dory to more level to the water line. Funny thins is I saw a foiled rudder at last fall's Plywooden boat festival in Port Aransas..I never did get to ask the builder if it was intended as a step or a foil.
https://lh3.googleusercontent.com/pF_Sofb4JcvZtLvL4Ik5xzShaamBnvTJGs1srGY-1fE8gHWza9zdTQ7ndcFqedqy5nFqys1hjuXRdIb07QFOgdYItEvKrjUijOf0uNrlF4A4EAHoVVZcLwCj8IBBI-2BuPMWgrJdnPFUMY2R4eASH-2_2OrDIdbX8dxweSXa7mAHImTwzOV3drshipr4LY2Nj4eAiCUSYSIzGYBMD7y3TFgJhdoB0BPD0TEmweIfEK_8P1PxXBVo_6iwQyrNwOQ4Ki81AWMq-OCtaX86KlnNXI5eDlx-c4NQTtv-jeCei5I0yBDep7Nr_u1u4AoMwzkMuP8BOXJ0IXlC75D1eVYTpbYuqDmIH9unVgVO84GCLpNaUj-94eVJa_AF0bM1eI6XbR_vG7wutBCATwrQZnoJU29NUrnvNyjmc6zbCb49h9GUVfRXLj6k3urJdlo_xIjJ8eMEh_94LWgv5qqk6M7kOHf4Ed-x1VoinYqOzk_WV4UR0zXJrOX41wvXuKnEO1k03ZXwVEkfuGYpV9jr5E1ksBd7BzJuBP8plUmrVgwN5Au-a4UFuwUonHFDWtMTSp-7GlJ4ZZl_ZQb_lLL4gLdeTK5Y4jwrZ3qGdPx1nmdKX5w4GqTs5OrQ5g=w479-h638-no
Curt Dennis curtdennis@msn.com
Hydrofoil dory is a neat idea -- and possible plausible. The hull is light enough to lift easily.
I've been sailing my lug-rigged dory hard and have gotten it up to more than twice hull speed (hitting 13 mph). I'm confident it will go even faster, but the wetted surface area is a limiting factor. I try to get my weight as far aft as possible on a reach and even so I can't get the bow out of the water. A foil on the rudder would seem to be counterproductive as it would push the bow down. A couple of foils up by the mast might do the trick. . . . But what do I know? Just guessing.
Birch2,
I had the opportunity to have another dory sailor watch my dory under sail. I have red bottom paint up to the water line with off white hull so it is easy to see the foreward/aft tilt of the boat under sail. Even with just me in middle seat the other dory sailor told me my bow rode a couple inches high and with my wife in the stern seat the bow rode even higher. Mine is a lug rig and the other dory was a sloop rig but both of them rode bow-high and our conclusion was with 2 people in the boat that we needed to use the foreward and middle seat, not the middle and aft. When sailing alone using the middle seat I tried putting 6 milk jugs filled with water in the bow and that did flatten it out a little. The other dory sailor and I did find out that the more you can get the bow down to nearly a flat water line so the stern doesnt squat, the better the boat comes around in the wind.
Your thoughts?
Curt
Fascinating. Perhaps the bow rides high because the boat is trying to climb over the bow wave. That’s what happens with a motor boat. Does the boat flatten out at high side? 10 mph or so?
Meant to type “high speed”