RCU Forums - View Single Post - Building technique: Utilizing a Wing-Jig, Scale P-51 "Speed Wing"
Thread: Building technique: Utilizing a Wing-Jig, Scale P-51 "Speed Wing"
View Single Post
Old 03-01-2015, 12:00 AM
  #17  
Iron Dog
 
Iron Dog's Avatar
 
Join Date: Feb 2009
Location: Sacramento, CA
Posts: 1,348
Likes: 0
Received 3 Likes on 3 Posts
Default
General Wing Assembly:

13. It is at this point that the dihedral-angled shear web SW1 and root rib W1 can be aligned and glued:


a. Insert both SW1 and the rear SW1 spacer so that the square (or right-angled) side of each is against rib W2. (Unlike the other spacers, due to the dihedral angle, this particular rear spacer shear web will need to be inserted vertically.) For proper dihedral it is important to note that the longest side is oriented at the bottom of the wing, and the shortest side is at the top.

b. Then slide the root rib W1 against the shear webs. Lay a straight-edge across the top of the rods to ensure that the rib is perfectly straight, with no warping, prior to gluing. (Any warps would likely cause gaps at the centerline when later gluing the wing halves together. This could affect the integrity of the glue joint.)





c. Very carefully move the straight-edge away and CA the inside (towards the W2 side only) of the rib to the front and rear CF rods (if used). Because of the complex curves in this section of the wing, you will need to gently, but firmly pinch the spruce spars to seat them in the spar cut-outs of the rib. Ensure the dihedral-gauged shear web is away from the spars, then glue spars to rib W1. When the glue is dry, with one hand, continue holding the spars in place, while the other hand slides SW1 back against the spars. Center the shear web perfectly on the spars and glue. Once this glue joint has set, you can release the spars without worry that the spar will pull away from the rib.

(Pull straight-edge away before actually gluing.)



d. Remove the rear SW1 spacer.
Attached Thumbnails Click image for larger version Name: IMG_4977.jpg Views: 1373 Size: 661.1 KB ID: 2077615   Click image for larger version Name: IMG_4978.jpg Views: 1350 Size: 667.0 KB ID: 2077616  
Iron Dog is offline  
Reply Like