Delta Hydrofoil Pro Tip: How to measure angle of attack on a hydrofoil

[@gastonbarouille767]

Thank you for share your knowledge! You explanation was super clear. I have an RRD85 foil and it's super lifty. has an 85cm mast, 120 boom, 80 wing and 38 stab (plus another 55 stab purchased separately). I put a stainless steel washer in the front screw of the stab to make a trim correction

[@enzodebredo]

does it make a difference when the stabillizer is mounted on top of the fuselage!?

[@christianlassen1577]

There's a couple videos of guys doing flatwater pumping on a foil board, once they get some speed (boat or paddle) they're foilborne and pumping to keep self propelled for a couple hundred yards. What kind of design and angle do you think would work best for something like that?

[@livingsevilla9854]

thaks for sharing, only one question if you are so kind of reply. where in the horizontal length of the wing you measure.? (half way from fuselage to end of the wing?

[@aldenhaverly]

Two to three inches from the fuselage in most cases depending on the foil shape.

[@theseatpostman8961]

Hi George, thanks for the informative video. If setting up a surf or SUP foil I would presume the stabiliser angle would be less as the nose of the board is not driven down as in a kite board?

[@aldenhaverly]

Yes. You’re apsalustly correct

[@michal5869]

hi what accelerometer chip is inside Wixey WR300? the most of smartphone accelerometers for angle counting has Linear acceleration sensitivity = 0,061

[@mfuzita]

Dear Alden what you suggest for stand up paddle? What wing and stabilizer size? Regards Marcelo

[@hugoacuna8918]

I would like to contact you and ask you a question. Do you know how I can do that through KZbin?

[@Rick_Cavallaro]

Very helpful. But I'm wondering what screw you're referring to when you say the center of your stance should be 5" in front of the front screw? Is this the screw that mounts the mast to the board, the fuselage to the mast, or the front foil to the fuselage? Thanks.

[@aldenhaverly]

The screw that the video is referring to is the screw farthest towards the bow of the board that is used to attach the strut to the board.

[@Rick_Cavallaro]

Thanks! I'm up and riding now, but still a ways to go.

[@SaulOhio]

Oh, OK.

[@SaulOhio]

5 inches in front of the front screw of the front wing, or of the mast?

[@robrockwindsurfboards75]

If the fuselage goes horizontally through the water! What is the angle at which the main wing goes through the water ??

[@aldenhaverly]

+Rob Rock Windsurfboards ideally the main wing is parallel to the fuselage and the rear wing is between 1 and 3 degrees depending on your foil setup

[@markusbroyles1884]

@@aldenhaverly This is the detail that I've been missing ~ but right on time now as I plunge into making up a set of these foils and masts and boards for myself... ALOHA !