Darren wrote:On a tech note on the wing shape, Rick, note Terry's other regret on the kind of teardrop shape wings you're still running. His engineering background mentioning it's propensity to cause undue vibration from the uneven shape, thus the latest and greatest edition going back to the more paddle-like shape that he says vibrates less and can be spun faster.
You might be able to track down some old wings of that new-old shape that are even bigger than those you're running, if bigger truly is found to draw better.
My wings are the biggest I've ever seen commercially available, but I suspect he made a good point about not being concentric creating imbalance and noise issues. I mute the noise by buffering the battery flap, which otherwise rattles, with felt furniture pads and better than OEM velcro closure, and that from the body's attachment to the post with garden hose gasket bushings.
Concentric, rather than lobbed, wings might very well be a better idea with regard to vibration and resulting noise, but not having them attached under, rather than at the end of the axle, as in the case of their new wings, means forgoing the propensity to nearly always stop with the same side down. Which is a trade-off I'll not make.
Further, if you look closely at the old metal wings, you'll see there are three holes to allow varying the wing's angle:
b7df07a6-4110-47ff-aeff-d73754281684.jpg
and experimentation seems to have shown that using the above configuration makes the wing most apt to reliably stop with the white side facing upwind (and out of sight of finishing birds) in winds strong enough to stand the wings vertically - another feature I'll not give up.
Which isn't to say I won't experiment with concentric wings (albeit attached under the axle) if I ever get to the point of having to have wings fabricated.