Wing washout

The original Templates have "level lines" drawn on them. Would that help you to determine the angles?

I don't know the numbers off the top of my head but I'll try to put you in contact with someone who knows.

Stand by.

-Dan Yager

www.quickheads.com

Hi Graeme,
I posed this question to some other Quickie builders and I got the following response from Larry Severson:

The plans say nothing about washout degrees. However, if you hot wire to plans, you WILL have the desired plan washout. For a person using a CNC device, the twist can be calculated simply by using the length of the segment and the amount of drop going from the inside to the outside front. Use a protractor placed at the projected tip defined by an in place control trailing edge.

Actually, it mystifies why the plane has washout. The purpose of
washout is to insure that the ailerons (area of) are stalled last.
With washout the wing stalls inboard. On the Q, the ailerons/elevators are near the root. I think that it works because
the surfaces cover so much of the span. Of course, the span of the
controls needs to be great because they are inboard and have a small moment arm of action. If the controls were placed out at the tips, they could be smaller but more complex in manufacture.

Larry Severson
Fountain Valley, CA 92708
(714) 968-9852

The best advice I've gotten from people though is to "build it per plans" first and then make modifications if you need to, after you've flown it for a while. So I don't recommend building it without washout.

Please let me know if you have a set of templates though. Those should give you enough information to figure it out using the BL measurements, and level lines.

CLICK HERE for a complete set of Q1 templates with GU canard templates.

Or CLICK HERE for a verified set of LS1 templates and instructions for the Q1.


I hope this is helpful. Please let me know.

Thanks,
Dan Yager

www.quickheads.com

Graeme,
That's good to hear. Please document what your doing, I'm sure lots of people would like to hear how this turns out for you.

You can even use this site as a blog if you're interested. I have plenty of space for pictures, and you can use it for free.

Keep up the good work and good luck!

Cheers,
Dan Yager

www.quickheads.com