Mountain Models SwitchBack Senior Assembly Instructions Manual page 17

12. Press the parts from the previous step into place on the back of the ribs, as shown in the
image below. MAKE SURE that the angled end goes towards the center section and is on the
correct side. Press it into place a little bit at a time until all the ribs are fully seated and it is
plugged into the center 1/8" rib.
13. Press the outboard 1/8" balsa ribs into place. These are on the sheet with the canopy frame.
14. Slide the 1/16" plywood spars into place as shown in the images below. Note that the top and
bottom spars are different shapes. Make sure they are flush with the spar and glue them in
place with thin CA after they are in position.
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