Top Flite TOPA0970 - Manual (Page 14)

14
HOW TO CUT COVERING FROM BALSA
Use a soldering iron to cut the covering from the
area beneath the belly pan. The tip of the soldering
iron doesn’t have to be sharp, but a fi ne tip does
work best. Allow the iron to heat fully.
Use a straightedge to guide the soldering iron at a
rate that will just melt the covering and not burn into
the wood. The hotter the soldering iron, the faster it
must travel to melt a fi ne cut. Peel off the covering.
OPTIONAL PNEUMATIC RETRACT
INSTALLATION
If you plan to install pneumatic retracts, skip to step 11
after you have completed this installation.
❏
1. Two sets of bolt-on axles are included with the
optional pneumatic retract set. If you plan to use the
wheels included with the P-40, you will install the 5mm
diameter axles. If you plan to use wheels from another
manufacturer such as Robart, install the 3/16” [4.8mm]
axles. Flat spots are provided on both sides of each
landing gear strut. The fl at spots that are closest to
the end of the struts should be used. Install the axles
onto the struts using the included 3mm SHCS and
threadlocking compound. Do not completely tighten
the screws yet.
❏
2. Connect the airlines to the retract. Insert the
retract into the plywood mounting box and slide the
retract as far forward (toward the LE of the wing) as it
will go. Mark the locations of the four mounting holes
onto the box. Drill 5/64” [2mm] holes at your marks.
❏
3. Thread a #4 x 5/8” [16mm] self-tapping screw
into each hole and back it out. Apply a couple drops
of thin CA to each hole. When the CA has dried,
install the retract with four #4 x 5/8” [16mm] self-
tapping screws.
❏
4. If the end of the axle does not align with the
center of the wheel well when the gear is in the up
position, adjust the position of the axle on the strut
until it does and then thoroughly tighten the screw in
the axle.