Peter_Frank wrote: ↑
Mon Dec 11, 2017 9:12 pm
I still say you are wrong Mossy, and can in fact show that planes can turn fully around with wings perfectly level because of horisontal COE coming from the fuselage can be well in front of the rudder so the resulting sideways force acts just like banking and pulling the elevator, but no reason to waste time arguing about this...
Hydrofoiling, leaning into the turn while using yaw movement as input is the way to get tight turns
- is the short version - let riders try themselves and find out how much it means
RH got a really good point indeed
My message with this thread was to make it easy and be helpful, and SHOW what is meant with the term yaw, visually, so everybody can understand it and hopefully use it right away.
(and keep all the nerd talk out for simplicity - not to quarrel about this and that)
I get what you're trying to do, but I think explaining it to novice riders using the wrong terms isn't helpful. It's not nerd talk, it's correctly attributing the physical principles that underlie hydrofoil behavior.
All turning on a hydrofoil is a product of rolling the foil in the direction of the turn so that the lift vector propels you towards the center of the turn radius. There are a lot of forces to control when doing this, so I can understand that you need to shift your hips, lead with your shoulders, etc. but just because your body twists about your waist doesn't mean the foil is yawing, it just means you're balancing the board as you conduct a maneuver that destabilizes the foil-lift/kite-power vectors.
Unless you're making the specific claim that one can twist the strut with one's body weight to induce a left/right yaw moment that initiates turns, I think you've used the wrong term. Having done something like that on my Sword2 (hard upwind it felt like you could pull on the strut hard enough to get it to twist a bit when fully hiked out) I can understand that not every strut 100% resists deflection, but I don't think that's your claim, especially not when talking to riders on aluminum struts that do NOT deform in this plane of motion.
I guess it doesn't really matter all that much, except that if someone said what you wrote to me in person on the beach, I'd have no qualms correcting their misuse of terms.