HARMON ROCKET III.
Instruction Manual.
20
1) Set the tail wheel assembly in place on
the plywood plate. The pivot point of the tail
wheel wire should be even with the rudder
hinge line and the tail wheel bracket should
be centered on the plywood plate.
2 Using a pen, mark the locations of the
two mounting screws. Remove the tail wheel
bracket and drill 1mm pilot holes at the loca-
tions marked.
MOUNTING THE TAIL WHEEL BRACKET.
3) Secure the tail wheel bracket in place
using two 3mm x 15mm wood screws. Be
careful not to overtighten the screws.
1) Align the tail wheel wire so that the wire
is parallel with the bottom of the rudder. The
control clasp has a predrilled hole through the
top of it. Slide this hole onto the tail wheel wire
while sliding the clasp over the bottom of the
rudder.
MOUNTING THE CONTROL CLASP.
2) Using a ruler and a pen place a mark
onto the bottom of the rudder, in front of the
rear edge of the tail wheel wire. The back edge
of the clasp should line up with this mark.
You may find it necessary to bend the tail wheel
wire down slightly so it lines up with the clasp
without binding.
5) Rudder pushrods assembly follow
picture below.
3) While holding the clasp firmly in place,
use a pen and outline the clasp onto the rud-
der.
4) Remove the clasp, and using a model-
ing knife, remove the covering from inside the
lines you drew. Use 220 grit sandpaper and
carefully roughen the inside surface of the ny-
lon clasp.
4) One at a time, hold the pushrods in po-
sition over the respective servos to check for
proper servo direction. If any servo turns in
the wrong direction, switch your radio’s re-
versing switches as necessary to achieve the
correct direction.
2) Elevator pushrods assembly follow
pictures below.
M2 lock nut.
Snap keepper.
M2 clevis.
3) Connect the elevator and rudder servos
to your radio’s receiver and turn on the sys-
tem. Set the trim tabs on the transmitter to
neutral and center the servo arms. The eleva-
tor and rudder servo arms should be perpen-
dicular to the servos.
Elevator pushrod.
Pushrod.
Control horn.
Connector.
Metal clevis.
1)
Thread one nylon adjustable control
horn on to each aileron control rod. Thread
the horns on until they are flush with the ends
of the control rods.
ELEVATOR - RUDDER PUSHROD INSTALLATION.
Rudder control horn.
Elevator control horn.
