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Old 03-13-2016, 06:28 PM   #1
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Default tad's ASII

Guys I have finished the lower wing that was damaged and am in the process of reassembling the plane. Have the wings on and started adjusting the wires but have noticed a problem that was not there before. Leveled and squared the center section first using plumb bobs etc and then attached the wings. Got the top wings leveled and was adjusting the wires when I decided to pull a string line at the rear of the wing from tip to tip. Even though the trailing edges are level as is the leading edge with the center section the trailing edges are not lining up exactly with the string line. The left wing is about 1/4 inch low at the aileron bay and 1/2" at the wing root. Not sure if I have a put a twist in the wing or if I have missed something this time around. I have never used rigging boards, since I do not have a drawing or measurements on making them, but wondered if anyone has a drawing or sketch you could send me. Maybe I am putting a twist in the wing with the flying wires


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Old 03-13-2016, 07:03 PM   #2
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I don't think that Bill ever did a rigging board design for the ASII, but maybe I just missed it.

I think I've got some 3D models of ASII wing airfoils. I could probably draw up a simple rigging board pretty quick. PM me your email address.


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Old 03-13-2016, 08:21 PM   #3
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Just to be clear, is it the top wing that is low at the root or the new bottom wing?
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Old 03-13-2016, 08:34 PM   #4
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Tad,
Good to hear you are putting it back together.
Not sure i understand the trailing edge problem.
If you have the string from outboard trailing edges it is hard to figure how
you can have the center section level and be 1/2" off on the left root rib.
The only way that is possible is for the left top rear wing fittings to have moved
either the center section or the left wing. i would sure take a look at them even if you have to cut some inspection holes.
i seem to remember the bottom of the spars to be parallel with the chord line so a short (24") digital level held there
should tell you what is off.
In the photos of the left lower wing damage you can see the top left wing twisted down at the leading edge
so i would look at the fitting at the rear spar top left wing first.
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Old 03-13-2016, 09:05 PM   #5
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I'm with Dennis. If the top wing still matches the center section and one side checks 1/2 inch low then it has always been that way or something could be damaged.
Also the center section could be off center to the left causing the left side to move down and the right side would move up. If you started out by tightening the left side landing wires, that could have contributed but they would have to be way too tight as would the left side flying wires.
Re check the Center section. You may fix it with the roll wires.
I'm thinking this through as I type.
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Old 03-13-2016, 10:46 PM   #6
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Hey Neil, It's the top wing. I probably should have taken a picture of it rather than trying to explain it. May not be worth worrying about since the plane flew hands off prior to damaging the lower wing. I did have to add a few washers to correct the right wing being a little heavy but basically flew fine. All I can determine is there may be a slight twist in the wing.
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Old 03-13-2016, 10:56 PM   #7
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I will do that Dennis although I checked the upper left wing while I had it off and could not find anything that off with it. The strut was fine and the wing fittings bolted right up to the center section. I'll recheck the center section tomorrow afternoon and see if I overlooked something.

Hope all is well with you and I really enjoyed the article on your ASII.
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Old 03-14-2016, 12:57 AM   #8
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Tad,
i have a much worse problem;
My wife spent the money you gave me for the wing....
but there is still an empty space on the wall with only 3 out of 4 wing panels!
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Old 03-14-2016, 10:21 AM   #9
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I'll recheck the center section this afternoon and see if it is level at the rear. Could be that is where the problem is given that I was leveling it at the front. I had checked all the wing connection points and did not find anything appearing out of alignment or moved from it's original location.
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Old 03-14-2016, 10:24 PM   #10
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Dennis, I am pretty sure most wives out there all have the same operating system, just come in different cases.


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