Turnigy SU-25 50CC Operation instructions

CAUTION : this plane is not a toy and should be kept away
this manual.
●First-time builders should seek advice from people having building
experience in order to assemble the model correctly and to produce its
●Assemble this kit only in places out of children’s reach!
●Take enough safety percautions prior to operating this model.
You are responsible for this model’s assembly and safe operation!
●Always keep this instruction manual ready at hand for quick
reference,even after completing the assembly.
children under 16 years of age! Before use , please carefully read
Flying Weight:6000g;
Radio:6channels 6servos;
Engine: 50CC GAS engine;
Wing Span:89in/2260mm;
Wing Area:93sq.dm;
Length:87in/2208mm;
performance to full extent .
P.1

Gather the wings and joiner
parts as show.
Cut the film along the servo
hole on the bottom of the mian
wing.
Apply AB glue to make aileron
attache to the main wing.
Install The Aileron Servo
P.2

Lay out the servo and draw the
servo extention throught the
wing and pull through the wing
root rib.
Link the servo arm and control horn with pushrod as show.
Repeat all above steps for the other wing.
Gather the elevator and
carbon joiner parts as
show.
Install The Rudder & Elevator
P.3

Cut the position for the
stabilizer assembly.
Insert the stabilizer with
aluminiun joiner .
Fixup the stabilizer to the
Apply AB glue to make elevator
attach to the stabilizer.
P.4

fuselage with four screws
on both side.
Mount the elevator servo in place
and pull the servo wire extension
up toward the front.
Attach the servo extension wire
using foam wire holding brackes
or zip ties to the formers along
the sides of the fuse so they
can't interfere with the rudder
control cables.
Mount the servo arm on to the
elevator push rod before installing
it on the servo so you can tighten
the nylon insert locking nut to the
mounting screw.
P.5

Slide the stab on to the alumium
tube and attach to fuse using the
bolts provided.
●Make sure the bolts has been
totally screwed into the blind nuts.
Loop the cable back through
the brass swage tube as show.
Crimp the brass tube with a
criming tool or pliers.
P.6

Attach an metal threaded RC
link to each threaded coupler.
Attach the RC links to the
rudder servo arm and then
attach the servo arm to the
rudder servo as shown.
●Ensure the servo doesn't bind
at center or at either end point.
Drill holes in the hardwood tail
wheel mount and install the blind
nut through the opening in the
rear of the fuse.
Install the mounting screw for the
tail wheel.
●Ensure it has been totally
screwed into the blind nuts.
Push
rods
Rudder
servo arm
Aluminum
steering peg
P.7

Join the wing with wing joiner
as show.
Pull out the servo extention.
Use four bolts to fixup the
main wing to the fuselage.
Join The Wing
Plastic
bolt
P.8

Gather the landing gear parts
as show,Landing gear strut,4
mounting bolts,washers and
lock washers,2 wheels,2axles,
and 4 collars .
Install the inner wheel collar
next to axle bolt.Tighten the
inner wheel collar in place.
Attach the landing gear to the
wheel.
Install wheel pants with two
mounting bolts.
Wheel pants take a lot of abuse,
mount securely!
Install The Landing Gear
P.9

The finished photo as shown.
●Bottom View
High quality carbon landing gear for choice.
P.10

The process of the fuel tank
assembly.
Install the fuel tank mounting
ties under the fuel tank floor.
External fuel pipe
Insert the throttle pushrod through the
throttle servo easy link.Move the
throttle servo arm to the centered
position and pushrod so that carturetor
is at half open.
Tighten easy link set screw.
Install The Fuel Tank
Velcro tank straps
over foam.
P.11

The final throttle servo installation.
Install the battery,receiver and
switch in place as shown.
Attach the escape-pipe to the
engine.
Glow Engine Installation
P.12

Draw the engine ecnter line and
thrust line darker with a ball point.
Note the 2 degree right thrust built
in to the firewall.
The cowl is already built with this
offset as well.
Use the drill template if you are
going to use a DA 50 or measure
your engines mounting location.
Remember the engine is mounted
inverted.
Determine where the throttle arm
push rod is going to the firewall
and drill a hole.If you are going to
use a Nyrod,then make the hole
the same size as the outsider
red tube.
Install the canister muffler in the
cooling tunnel with a commercial
muffler mount and a support in the
front of the muffler made of
plywood using some silicon tubing
for insulation form the heat using
glue.
P.13

Use four 3MM screws to fixup
the canopy .
Install the cowling with
four 3MM screws.
Assemble The Canopy
Assemble The Cowling
P.14

CG & Control Surface Movement
P.15

Finished Photo
P.16

children under 16 years of age! Before use , please carefully read
P.17

P.18

P.19

P.20