I need someone to knock the cob webs out of my head and get me thinking clearly again. Right now the wing on my 25% Edge ARF does not sit parralel to the already glued into place horizontal stab. I'm not sure if it's the stab that is uneven or the wing. It seems the more I try to figure it out, the more confused I get.

How can I make sure my stab is on square and level? It is easily fixed if my wing is indeed not sitting correctly in the saddle. What if the stab was glued on unevenly? Can I just shim the wing in the saddle to match the horizontal stab? What will this do to the flight characteristics?

If the vertical and horizontal stabs are perpendicular to each other I would sand the wing saddle so the wing and stab are in line.

I had this happen to one of the Bingos that I built (fuselage was twisted) it was much easier to sand the wing saddle that remove the twist and it turned out to be the best flying Bingo that I have built (three two for me and one for a Friend).

The way to find out which is off is to draw a vertical centerline on the firewall and make that line 90 degrees to the workbench. If the fin is vertical and the stab is perpendicular to the fin then as Bingo Flyer said, it's the wing that's off.

If the fin and stab are perpendicular to each other but not square to the fuselage, then the airplane will always look like it's banked in one direction or the other if you square the wing to the stab. I'm not sure it would be worth cutting off the tail feathers though.

When I measure the distance from the wing to the stab it's equal on both sides so they are sitting square with each other. I also measured from the stab to a center point on the fuselage and it was even on both sides. When it comes to either being square there's no doubt it is right.

From there I can't determine whether the wing is sitting parallel to the horizon or if it is the stab. I seem to be able to measure 5 different ways and somehow find 5 different measurements. Sometimes the stab is right on, sometimes the wing is right on, sometimes I have the fuselage just resting on the work bench, other times I put it in an airplane stand. I just cannot seem to come to any decisive result. I even checked some of my other airplanes to make sure I wasn't crazy.

So what do I need to do to make sure when it's in the air both the stab and wing are parallel to each other and the horizon?

Heres how I did it. I took the little level that comes with the GP Plane Balancer. With the fuselage inverted I placed the level on a flat part of the fuselage. I made sure that the bottom of the fuselage was level from left to right. Then I set the level on the stab from left to right.If both are reading level then I know they are right. Always ended up perfect.

As I mentioned in my earlier post. Draw a vertical centerline on the firewall.

Block up the wing so it's level then put the fuselage on it and square up the line on the firewall to the workbench. That will give you a good starting point. Shim the wing as necessary (or work on the saddles) to get the wing sitting in the saddle so that relationship is right. Now add the stab and square it up.

What you need to do is find a reference point on the fuselage that you consider to be "right." A man with five reference lines never knows which one is straight.

Ok, using your suggestions I've determined the stab is off parallel by nearly one quarter of an inch. I have no idea how that happened, but there it is... 1/4". Looks like I'm in for a little reconstruction work unless someone has some brilliant ideas to save me the trouble.

I just went through the same thing on a Majestic I build. I put the stab in about 1/4-1/2 inch off at the tip. I drove myself crazy for days just knowing about it. I couldn't decide what to do about it and got lots of ideas on a fix. but cutting the horizontal stab loose is not something I had any confidence in. I just knew I was going to ruin my plane.

Well to make a long story short. I cut the stab loose on the top and bottom and shimmed it up to make it level (very little is required). Filled in the gaps with balsa and reglued everything it came out great and you can't tell I even did it. If you fold back the covering and are careful you can hardly tell you did it.

The method I used was to use a hacksaw blade on the side were I could run it all the way through both sides of the fuselage. On the rudder side I used a dremel tool with a cutoff wheel to cut a slot along the whole side. Use a blade to cut the edges loose, shim were you need and CA/epocy it all back together. It came out great and was actually not near as difficult as I anticipated.

Read these posts:
http://www.rcuniverse.com/showthread...light=Majestic

http://www.rcuniverse.com/showthread...light=Majestic

http://www.rcuniverse.com/showthread...light=Majestic]

I've had to cut out a stab from a fuselage once or twice, I CA'd a #11 blade to a small square of 1/4" ply and then used this tool to cut the fuse wall 1/4" above the glue joint. Rest the ply flat on the stab surface with the blade cutting into the side of the fuse and push it along.

Peter