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1. Cut out the wing section according to the measurements shown on the plans. Draw
a centerline from nose to tail on the wing before cutting it out. Do not discard the
excess foam pieces. They will be used to create the bottom skid.
2. Mark and cut out the four ½" X 2" mounting tab slots from the wing center. (FIG 4)
Make the cuts as straight and square as possible as these will accept the alignment
tabs from the vertical fuse section. Try not to "overcut" the corners as this may
weaken the joint. An Xacto #11 or similar blade should work well to make these
cuts. Again, use multiple passes to make the cuts.
Note: At this time, remove the plastic film from all fuselage and control surface pieces.
Also, this would be a good time to remove the manufacturer's markings if desired.
Complete these steps before gluing any parts or servo mounting tabs. Finally, shape the
leading edges of the wing and vertical fuse sections. A rounded cross section is the most
desirable. Take care to place the parts on a smooth surface when sanding. If this is done
on plywood or other rough surface, any imperfection in the building surface will transfer
to the foam especially if the foam is allowed to move. It is suggested that these edges be
covered with packing tape or other means to prevent damage from landings and to
avoid "hanger rash" when handling.
3. Mark and remove the elevons from the wing section. (FIG 5) Be very careful not to
"overcut" the corners on these cuts. Instead, make the main cut just short of the
corner and then use the blade following this cut to finish. Make sure to keep each
elevon in the same position that it was cut from. This can normally be accomplished
by matching up the manufacturers markings.
4.
Remove approximately 1/8" inch from one end and 1/8" lengthwise from each
elevon for clearance. (Note: This step is important if you intend to perform vertical
takeoffs. The clearance will allow the elevons to function during the takeoff
maneuver as described in the "Flying" section)Remove the lengthwise material
from the trailing edge which should be the manufactured end and normally has
minor dings from handling. It is very important to make several light cuts with the
blade here or the edge of the foam will distort the blade resulting in an uneven and
unpleasant looking trailing edge.
5. Bevel the leading edge of each elevon 45 degrees and attach to the wing section.
(FIG 6) Attach the elevons to the fuselage with a good quality packing tape or hinge
tape. A strip is applied to the top surface, then the elevon is folded over and a
second strip applied to the bottom. A third strip is then applied again to the top.
This creates a very strong yet flexible hinge that has never failed to date. (FIG 7)
6. Cut out the area for the elevon servos and epoxy ply servo mounting tabs to the top
side of the wing section. While there really isn't a top or bottom until assembled,
the Delta is more appealing if the side with the remaining manufacturers marking is
placed on the bottom. (The servo mounting tabs are shown on the bottom view on
the plans for reference only) The servo size and locations shown in the plan are for
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