49
Hangar 9 P-47D-40 Thunderbolt 30cc ARF
Flap:
Mid
1
1
/
2
inches
38mm
20 degrees
Elevator compensation:
1/16 inch (1.5mm) down elevator
Full
3
3
/
8
inches
86mm
40 degrees
Elevator compensation:
1/8 inch (3mm) down elevator
The flap servo speed can be reduced at
the transmitter to help reduce the ballooning
effect when applying the flaps.
We have provided a flap throw gauge at
the back of the manual. Use the template to
cut a piece of cardstock. Placing it under the
wing to set the amount of flap throw.
These are general guidelines measured from our own flight
tests. You can experiment with higher rates to match your
preferred style of flying.
Travel Adjust and Sub-Trims are not listed and
should be adjusted according to each individual
model and preference. Always install the control
horns 90 degrees to the servo centerline. Use
sub-trim as a last resort to center the servos.
We highly recommend re-binding the radio
system once all the control throws are set. This will
keep the servos from moving to their endpoints
until the transmitter and receiver connect.
Before your first flight
Prior to your first flight, we recommend that you do some
low speed taxi tests. Use these tests to center the tail wheel
steering by adjusting the pull/pull cables to allow for a
takeoff straight down the runway. Once you have finished, be
sure and take a minute to refuel the fuel tank ,fill the Retract
air tank, and take one last look at the airframe to be sure all
screws and control linkages are secure.
Until you have the model trimmed and have adjusted
the elevator compensation mix during the first flights, it
is recommend that you do not use the flaps for the first
takeoff. Once you have the model trimmed for straight and
level flight, you then can proceed to adjust the elevator
compensation mix.
Start with the recommended settings in this manual to begin
the process of adjusting the elevator compensation. Take
off and adjust the elevator trim for level flight with the gear
retracted. Next, slow the model to approximately half throttle
and lower the landing gear. Once the landing gear has been
lowered, move the flaps to the MID/ takeoff position and
observe how the model maintains altitude, making note of
any adjustments needed to keep the model level or of any
tendencies of the model to roll. Next, lower the flaps to
the FULL/landing position and then reduce the throttle to
what would be considered a slow landing approach speed.
Observe how the model maintains altitude and make note of
any adjustments needed to the keep the model level, noting
any tendencies of the model to roll.
TAKEOFF
For subsequent flights with the P-47D-40 Thunderbolt using
MID flaps for take off, maintain a shallow rate of climb and
allow the model to gain speed prior to making the first turn.
The flaps should be retracted at this point and you should
be entering into the normal traffic pattern. If you are using
retracts, we suggest that you retract the landing gear prior to
retracting the flaps.
LANDING
To set up for a landing, enter an upwind leg to the runway
at a comfortable altitude. As soon as you establish yourself
on approach, reduce power, extend the landing gear, and
extend the flaps to MID/takeoff to allow plenty of time for
them to cycle fully and the airspeed to stabilize. This gives
you the added benefit of verifying that you have all three
wheels down and locked prior to entering the downwind
leg. Make a gentle turn to align yourself parallel with the
runway at a comfortable distance out. Once you are nearing
the approach end of the runway on your downwind leg,
fully extend the flaps to the FULL/landing position and
allow the airspeed to stabilize prior to turning base and
final. Once you are on final, use the elevator to control
airspeed and the throttle to control your altitude. Once
you pass over the runway threshold, reduce the power
completely and begin to flatten out your descent to flare
for landing. Should you overshoot the runway, gradually
increase power to full and use the rudder to keep the
airplane tracking straight for a second attempt.
