Hello,

Has anyone had trouble aligning the wing on their CAP?

When I place mine in the saddle and square it up to the former that the dowels go through it measures a 1/2 inch difference between the tailpost and the end of the aileron on each side. When I adjusted the holes and the back of the wing to get very close measurements there is a noticeable angle between the former and the leading edge of the wing and I have unequal gaps between the sides of the fuse and root ribs. The fuse appears straight and when I have equal measurements between the ailerons and the tailpost I also have equal measurements between the wing tips and the middle of the firewall.

Before making anything permanent I was hoping to hear what others had done, or what others with a similar issue on a different model had done.

TIA for your help.

GalenB,

This might be a dumb question but bear with me. Did you have to insert the extra plywood rib to correct for cowl clearance? There's 1/8 " potential offset to the center of the wing right there. I hope your not trying to center the mounting dowels to the large mounting holes in the fuselage -- thats why they gave you mounting blocks to glue behind those fuselage holes. If you added the extra rib it will look like the illustration attached below:

I finally assembled my wing and had to install 3 extra 1/8" hardwood ribs to provide for clearance of the fuselage and cowl. This puts the middle extra rib right in the center of my wing. When I go to square it up to the fuselage I will measure for the middle of the mounting block. I estimate I barely have enough to clear the large mounting holes in the fuselage -- my mounting block pieces will be nearly to the outside edges of those holes.

Before I can perform the above I have to trim the extra ribs, fill in any gaps with filler, and glass the center of the wing panel.

I did have to increase the thickness of the center rib. I made a new one from 1/4 ply that gave me a 1/4 of clearance between the root rib and the fuse on each side. This extra width caused me to enlarge the holes in the former that the blocks for the dowels get epoxied behind. I am planning on making a single piece for this purpose as it will strengthen that former once it is "sistered" to the back of that former... I also had to enlarge the holes for the lite-ply plate that is epoxied to the front of the wing across the joint. When I epoxied the wing halves together the middle of the extra rib was aligned with the middle of the hardwood joiner...

I will measure the distance between the dowels and the wing center when I get home tonight, but I am pretty sure they are nearly equal... I will also check how square the former that the dowels go into is with the sides of the fuse. Maybe its off...

I am worried that the in my quest for getting equal measurements I am going to mount the wing at an angle to the fuse...

Bump...


Anyone else?...