Jabiru J450, Руководство конструктора, Страница: 150 / 343

Jabiru J450 Constructors Manual
Pre-Paint>Fuselage>Fit windows
Tuesday, April 6, 2010 150 of 343
Pre-Paint>Fuselage>Fit windows
The windows are formed from strong but brittle acrylic and care must be taken to avoid
marking or cracking the windows while they are being fitted. The windows are fixed in place
with flock and
without screws, however screws are used around the windows to hold the
windows in place while the flock cures and are then removed.
Any minor shaping of the windows that may be required must be done with an 80 grit sanding
disc or a hand-held sanding block: you must
never use a jigsaw on acrylic.
The description and photos that follow show the window being fitted to a pilot‟s door, and the
exact same technique should be used for any window.
Materials required:
Epoxy resin and flock, wax
¼ x ¼” adhesive-backed foam strip
8G self-tapping screws in heavy duty (coax) cable clamps:
Pre fit the window
Start by carefully sanding away all of the gel coat from the joggle, then fit a length of the ¼”
foam strip around the very inside of the joggle (the dark grey line in the photo below) – this
will keep the flock from making a messy line around the inside of the window and give a nice
clean edge when the window has been flocked into place.
Close and latch the door and then test fit the window, holding or taping it in place and making
any minor adjustments that may be required so that the window fits snugly inside the joggle.
Remove the window and, working very carefully, drill 1/8” screw holes in the door frame just
outside of the joggle as shown arrowed above. Note in the photo of a completed window
above that the protective plastic sheet has been folded and taped back from the edges of the
window so that the bulk of the window area is still protected from scratching.