good solder joints is using the soldering iron to completely heat
both parts before applying the solder. Apply a little flux to the end
of the pushrod and insert it into the barrel of the R/C solder link
about 3/8" of an inch - no further. Use a weight or a clamp to hold
the parts in this position. Apply another drop or two of flux to the
front and rear of link's barrel and place the soldering iron onto the
solder link, keeping it there until the flux boils. Apply a little solder
to the solder link, allowing it to flow into the barrel. When the joint
looks neat, remove the soldering iron and allow the assembly to
cool. Clean the joint with a rag and fresh water to remove all
excess flux. Prepare both aileron pushrods in this manner.
❑
9) Use two pieces of masking tape to secure each end of the
ailerons to the wing panels, holding them in "neutral" position.
Prepare the two nylon control horns by first drilling out the two
mounting holes in the base with a 3/32" dia. bit. This allows the #3
mounting screws to pass more freely.
Connect the aileron pushrod to the servo output arm, using the
solder link. Connect the 4-40 R/C link to the nylon control horn,
using the 2nd hole from the end. Thread the R/C link onto the
pushrod wire until threads show through the R/C link. Place the
base of the nylon control horn onto the front edge of the aileron,
with the pushrod wire visually aligned in parallel with the wing ribs.
The correct mounting location for the control horn is with the front
edge of its base lined up with the edge of the aileron. Thread the
R/C link in or out on the pushrod threads until the base of the
control horn is in the correct position, sitting flat on the aileron.
Once in position, use a pointed object to mark the control horn's
two mounting hole locations into the aileron. Rotate the pushrod
out of the way and use a 1/16" dia. bit to drill two holes - about 1/2"
deep - into the aileron at the marks just made. Remove the control
horn from the R/C link and use two #3 x 12mm PWA screws to
mount the control horn securely to the aileron.
Re-connect the R/C link to the control horn and remove the two
pieces of tape holding the aileron in neutral to the wing panel. Plug
the aileron servo into one of the leads in the Y-harness and turn on
the radio system. Make sure the aileron trim lever is set at neutral
on the transmitter. Now, use the transmitter to check the aileron
for neutral. Adjust the R/C link as needed for neutral and test the
action of the aileron with the transmitter. The action should be
smooth with good centering back to neutral. Also again, check that
the aileron is moving in the proper direction for "right" and "left"
aileron commands from the transmitter. If necessary, reverse the
aileron direction from your transmitter and re-adjust the R/C link to
the control horn as required.
Repeat this procedure with the
remaining wing panel and aileron.
With the aileron servos installed, centered, and all adjustments
made to the linkages, it's good practice to secure the R/C links to
the control horns and servo output arms. Cut four short lengths -
about 1/4" or so - of medium fuel tubing. Slip a piece of tubing over
each R/C link, onto the two arms. Re-attach the R/C link to the
control horn and output arm and then, slide the tubing forward to
the connection. This ensures that the R/C links cannot be easily
dislodged from these important linkages.
With the exception of the decals, the wings are now complete and
ready to use. Set them aside for now.
FUEL TANK ASSEMBLY:
From the kit contents, locate the Fuel Tank Assembly bag. The
450cc (15.2 oz.) fuel tank will now be assembled. We suggest
using a simple two-line fuel delivery system in this airplane. One
fuel line is connected to the fuel pick-up or "clunk" line and the
engine's carburetor. If you are not using a fueling valve, this same
line is used to fill the tank. The second fuel line is the overflow line
for use when filling the tank. After filling the tank, this same fuel
line is then connected to the engine's muffler pressure nipple to
provide manifold pressure to the tank.
Note that the rubber
stopper for the tank has two holes all the way through it. Use these
two holes for the two aluminum fuel lines.
8