.
Elevator And Rudder Hookup
Attach a small nylon control horn to the rudder and another to the elevator using #2x1/2" sheet metal screws. Mount the
rudder control horn to the left side of the rudder and the elevator control horn on the bottom of the right elevator half, as
shown on the plans.
Slide an inner nylon pushrod into its outer sleeve and attach the Z-bend to the servo arm as you did in Step 73. Be certain
to completely tighten the small servo screw that holds on the servo arm.
The inner nylon pushrod must be trimmed to length before it can be hooked up. With the servo arm and the control surface
held in neutral, cut off the nylon tubing 1-1/4" from the control horn. To keep the exposed inner portion of the nylon
pushrod from flexing, it must be supported by the smooth end of the threaded rod. Cut a 2-56 threaded rod to the required
length and screw it into the nylon pushrod about five or six turns. Lock it in place with a couple of drops of thin CA.
Screw the clevises provided in the kit onto the threaded rods.
NOTE: Depending on our supply at the time of packing, your kit may contain nylon clevises instead of the metal clevises
shown in the photo.
Repeat this procedure for the remaining pushrod.
Receiver And Battery Installation
Wrap the receiver and the battery pack separately in foam rubber (such as SIGRF240), held on with rubber bands or tape,
to protect them from damage. Locate the battery pack as far forward in the nose as possible. Position the receiver right
behind the battery. The weight of these components will help to balance the RISER.The foam rubber should be thick
enough to hold the battery and receiver firmly in place so that they will not shift around in flight.
The receiver antenna can be run out of the
bottom of the fuselage and taped at the aft
end; or run out of the top hatch and
connected to a straight pin on the fin using
a small rubber band. The switch can be
mounted directly on the fuselage side
(locate it so that you won't accidentally
touch it during launch). If you prefer, the
switch can be mounted internally as
shown in the photo. Use a short piece of
music wire poked through the fuselage
side to activate the internal switch. Lastly, make certain that the charging jack is easily accessable inside the fuselage.
Pre-Flight
Be certain to range check your radio equipment according to the manufacturer's instructions before attempting test
flights. If there are any problems, send the radio in to be tuned or repaired. Various brands of servos can give different
amounts of control surface travel. By moving your pushrod linkages into a different hole of the control horn and/or into a
different hole of the servo arm, you can change the total amount of control surface travel you'll get when the transmitter
stick is moved to the full throw position. Adjust your pushrod linkages to produce the amounts of movement listed
below. Measurements are made at the trailing edge of the control surfaces at their widest point.
The control surface measurements
listed should give you plenty of control
during your first flights without being
overly sensitive. Test flights may
indicate a need for slightly more or less
movement, depending on individual
model performance and personal
preference.
RECOMMENDED
CONTROL
SURFACE MOVEMENTS
For test flying, the following
are suggested:
ELEVATOR
3/8" UP and 3/8" DOWN
RUDDER
1-1/4" LEFT and 1-1/4" RIGHT
Before flying, you should also adjust all your pushrod linkages so the control surfaces are in neutral position when the
transmitter sticks and trim levers are centered. After the first test flight, readjust the linkages if necessary so that the trim
levers can be returned to neutral position. It may take several flights before exact trim is established on all the flight
controls.
