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FUSELAGE CONSTRUCTION
74.
Use a sanding block to very lightly sand the edges of all the die-cut plywood
fuselage parts to remove any burrs or rough spots. Hold the sanding block at a 90
angle to the part while doing this. Remember, sand very lightly! You only want to
smooth the edges of the parts, not change their size or shape.
75.
Fuselage formers F1, F2, F3, and F6 are laser-cut plywood, and they do not have
their part name/number pre-printed on them. Use a pencil to mark each of these
formers with their proper name/number. Also mark TOP and FRONT on formers
F1, F2, and F3, after making sure that the holes in those three formers are
oriented EXACTLY as shown.
76.
The group of four holes located at the bottom center of former F1 are for the mounting of the Nose Gear Bearing. Turn F1
over, and use a hammer to gently tap a 4-40 Blind Nut into each of those four holes from the backside. Tap the Blind Nuts
in until the flange is flush against the back surface of F1. Apply a little Medium CA around the flanges of the Blind Nuts to
keep them from coming loose. Be careful not to get any glue in the threads of the Blind Nuts.
77.
Trial mount the nylon Nose Gear Bearing to the front of F1 using the four 4-40 x1/2" Mounting Bolts provided. Then remove
the Nose Gear Bearing and the four Mounting Bolts and store them away until needed later.
78.
Draw a vertical center line on the front of
F1, exactly equal distance from each
side. Then set your engine on the front
of F1 as shown in the photo, with the
crankshaft of the engine directly in line
with the vertical center line. Finally,
make two pencil marks on F1, one on
each side of the engine’s crankcase, to
indicate where the inside of the two
Engine Mounts should be.
79.
Draw a vertical line through both of the pencil marks you made in the previous
step. Make sure that both lines are exactly parallel to the vertical center line.
80.
Bolt the Engine Mounts onto the front of F1 as shown, using the four 6-32 x3/4"
Mounting Bolts and the four 6-32 Blind Nuts provided.
NOTES:
The holes in F1 for the bolts are oblong, to allow the Engine Mounts to be shifted
sideways to accommodate engines with different width crankcases. Thus, we can't
just hammer the Blind Nuts in as we did for the Nose Gear Bearing. Instead, first
assemble the Mounts, Bolts, and Blind Nuts loosely in place on F1.
Then as you begin to tighten down the Bolts and Blind Nuts for the first time, line up the inner sides of the Mounts with the
two lines that you drew in the last step. Continue tightening down the Mounting Bolts until the prongs of the Blind Nuts start
to get a grip on the back of F1. Double check that the sides of the Mounts are still lined up with the lines, and then continue
tightening the Bolts. Keep tightening the Bolts until the prongs of the Blind Nuts are drawn all the way into the wood, with
the flange flush against the back of F1.
Содержание KADET LT-40
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