© 2008 Stevens AeroModel.
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Joining the Wing Tips
Method: Wing tips are joined to the center wing section using a robust Delrin tip spar, double anti rotation dowels, and
four sets of incredibly strong Neo. Magnets. This arrangement negates the need to tape your wing tips on as they are
neatly retained by the friction of the tip spar and attractive force of the Neo. Magnets.
1.
Separate the provided Delrin tip spars. Tip spars are marked “RIGHT” and “LEFT” though they are identical
you may be required to make fit adjustments to fine tune each tip spar to properly seat within your wing center
section and wing tip. The “RIGHT” and “LEFT” designation is to help you identify the placement of these
custom fit parts. Fit tip spars to your wing center section assembly and corresponding wing tip by lightly
sanding the top and bottom edges (to remove the tooling marks from cutting) then more aggressively reduce
the thickness of tip spar until they slide easily within wing tip. This takes some time to get right but it’s well
worth it. You absolutely do not want the fit to be overly snug as this will make it next to impossible to separate
the panels.
2.
Build the wing dowel jig from 1/8 in. balsa parts (sheet 10/21) as illustrated below.
3.
Use the plan set as a reference for proper positioning of the wing anti-rotation dowels. You will install one each
to either side of the wing center section and the wing tip. These dowels are composed of 1/8 in. aluminum
tubing and are located in your 2x3 hardware bag. Use the previously assembled jig to obtain the proper
extension and maintain perpendicular orientation of the dowel to rib surface.
