Great Planes F-14 60 Kit - GPMA0435 - Manual (Page 5)

DECISIONS YOU MUST MAKE NOW
ENGINE, MOUNT AND MUFFLER
SELECTION
The recommended engine for the F 14 is a 60* - 75
cubic inch displacement 2-cycle *NOTE: Performance
may be marginal if a non-Schneurle-ported 60 cu in
2-Cycle engine is used. The engine you select will
determine how you build the fuselage, so it is important
that you have the engine close at hand while building
Because of the size limitations and the nature of this
model, 4-cycle engines are more difficult to install and
balance and therefore are not recommended.
This kit includes a Great Planes MM60 engine mount
(or similar mount) that fits most 60 - 61 (2-Cycle)
engines (slight modification of this mount is required to
mount the OS 61 SF by filing the inside edges of the
engine mount beams) If the supplied mount can't be
modified to fit your engine, it may be necessary to
purchase a different mount (check with your hobby
dealer).
SELECTION OF WHEELS
To save weight, we recommend using lightweight
wheels REMEMBER: Large wheels are ugly and
unrealistic on a model of this type, so try to keep the
wheels as small as possible.
If you will be flying from a concrete or asphalt runway, we
recommend 2-1/4" main wheels and a 2" nose wheel
For grass fields, larger wheels will be required, such as 2-1/2"
main wheels and a 2-1/4" to 2-1/2" nose wheel.
If you will be installing retracts, you should try to limit the
wheel size to a maximum of 2-1/4" main wheels and a 2" nose
wheel or the wheel wells will be excessively large.
POSSIBLE RADIO INSTALLATIONS
The F-14 is designed to satisfy a wide variety of
modelers' desires The f o l l o w i n g radio i n s t a l l a t i o n
options will allow you to customize the plane to fit
whichever radio you want to use.
Our recommended radio i n s t a l l a t i o n requires 5
standard servos and a 180 degree retract servo (if retracts
are used) This will allow you to use one standard servo
for the rudders, two servos for the elevators (one for
each), one for the throttle and one for the ailerons This
set-up will give you very precise control and is easy to
install
You can also fly the plane with 4 standard servos by
using only one servo to drive both elevators In this case
the elevator servo is mounted up in a front servo tray and
two long pushrods are used This will work Ok, but there
is generally more "play" in the elevators (due to the
longer, c u r v e d p u s h r o d s ) This method is not
recommended if you intend to use a high powered engine
or do a lot of high speed flying
Both rudders can be operated from one servo without
any problems because their linkage is much straighter If
you don't plan on doing much acrobatic flying, you can
even get by with only one operating rudder In this case
you would just run one pushrod straight back to the
rudder on the same side as the servo The other rudder
would be glued on to the fin and would not move
RETRACTABLE LANDING GEAR (optional)
This airplane flies very well with a fixed landing gear,
and retracts are not necessary, however, they do add
realism and speed, and are a nice addition (it you are
prepared for the extra work involved in their installation)
Since the retracts are all located in the fuselage, one
retract servo (such as the Futaba FP-S136G) can be used
to actuate all three retracts
COMMON ABBREVIATIONS USED IN
THIS BOOK AND ON THE PLANS:
Elev = Elevator
Fuse = Fuselage
LE = Leading Edge (front)
LG = Landing Gear
Ply = Plywood
Stab = Stabilizer
TE = Trailing Edge (rear)
= Inches
TYPES OF WOOD
Balsa Basswood Plywood