Mountain Models Tantrum
17
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Putting the pieces together
1.
Attach the spar caps along the top and bottom of the vertical spar, matching the
cutouts on the spar caps with the placement of the wing ribs.
Pay special attention to which end of the spar cap is facing towards
the root of the wing, and which end is facing towards the wing tip.
The wing tip should be flush along the side edge, with no
overhanging wood.
2.
Check to make sure that the rear of each rib is lined up with the other ribs and then
glue all of the joints, making sure that the ribs fit fully into both spars, that both spars
are touching the vertical spar, and that everything is flush, snug, and square,
including the wing reinforcements.
The Tantrum is meant to be a lightweight plane, so make sure you
use the CA as sparingly as possible, but you shouldn’t sacrifice
strength for weight.
Attaching the Stringers
For each wing, you will need:
•
4 stringers (Figure D)
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Putting the pieces together
1.
Slide each stringer lengthwise into the four slots at the end of each wing rib, making
sure that they are flush with the wing tip.
Upper spar cap
Lower spar cap