Sebart KatanaS 120 ARF User manual

SebArt professional line
KatanaS120 ARF
ASSEMBLY MANUAL
The new KatanaS 120 ARF was designed by Italy aerobatic pilot,
Sebastiano Silvestri and the design is based on of his successful
and famous KatanaS Tournament Of Champion’s airplane.
This professional ARTF kit is the result of Sebastiano’s long
research in 3D performance. This combined with an extremely
lightweight structure, the all wood airframe and the big control
surfaces give the KatanaS 120E an impressive thrust-to-weight
ratio and crisp control authority at any airspeed and flight
condition.
The KatanaS 120E can do it all…unbelievable easy harriers,
torque rolls, blenders, waterfalls and almost anything else you can
dream up are waiting you!
.....the only aerobatic limit is your fantasy!
Specifications: Recommended Set Up:
Wingspan:…..........187 cm (73,61 in) Weight:....3.900 - 4.100 g. RTF less motor battery
Length:….......……186 cm (73,22 in) Radio:…..6-ch with 5 digital servos metal gear
Wing Area:…..........78 dm² (121 sq.in) Motor: …Hacker A60-22S + MasterBasic 90-Opto
Engine: …2 or 4 cycle 1.20 - 1.80

Table of contents
Table of contents...............................................................................................................………..2
Required radio, motor and battery.............................................................................................….3
Additional required items, tools and adhesives.............................................................................. 3
Warning.......................................................................................................................................... 3
Before starting assembly ...........................................................................................................… 4
Using the manual........................................................................................................................... 4
Warranty information…................................................................................................................. 4
Section 1 – wing fillet installation…..............................................................................................5
Section 2 – ailerons installation………..........................................................................................7
Section 3 – aileron servo & control horn installation…............................................................….8
Section 4 – elevator installation…..................................................................................................11
Section 5 – elevator servo installation……....................................................................................14
Section 6 – tail wheel & rudder installation ……….......................................................................16
Section 7 – rudder servo installation……......................................…........................................….20
Section 8 – landing gear & wheel installation................................................................................23
Section 9 – electric motor & cowl installation…….......…….........................................................26
Section 10 – glow engine & cowl installation.......................................................................…….30
Section 11 – final radio installation ……………...........................................................................39
Section 12 – hatch & cockpit installation….................................................................................. 40
Wing installation…….....................................................................................................................42
Control throws…………………….......................................................................................……. 42
Mixing.............................................................................................................................................42
Rates and expos..........................................................................................................................… 43
Recommended CG......................................................................................................................…43
Pre-flight…................................................................................................................................…..43
Range test your radio..................................................................................................................….43
2

Required radio, motor and battery
Radio equipment:
•Minimum 5-channel radio system
•5 digital servos metal gear, recommended JR PROPO DS 8411
•2 servo extension 300mm, for elevator’s servos
•4 servo extension 100mm, for aileron’s servos
Recommended electric motor for best performance:
•Hacker A60-22S + MasterBasic90-Opto controller + APC 20 x 10 E
Recommended Li-Po battery pack for best performance:
•FlightPower 3700mAh 10S.….for unlimited 3D
•FlightPower 4250mAh 10S…..for 3D, duration and precision
Additional required item, tools and adhesives
Tools:
•Drill
•Drill bits: 1,5mm; 2mm; 2,5mm; 3mm; 5mm; 6mm
•Flat blade screwdriver
•Phillips screwdriver large and small
•Hobby knife
•Masking tape
•Paper towels
•Rubbing alcohol
•Sand paper
•Soldering iron
•synthetic oil
Adhesives:
•5-minute epoxy
•thin CA
•medium CA
Warning
This RC aircraft is not a toy!
If misused, it can cause serious bodily harm and damage to property.
Fly only in open areas, preferably in official flying sites, following all instructions included with
your radio and motor.
This plane is a compromise between Aerobatics and 3D flying, and not a pylon racer.
It is built with a very light structure and for this reason we hardly recommend:
→Do NOT fly your airplane at high speeds, because this may cause structural
failures or flutter due to the extremely large control surfaces.
3

Before starting assembly
Before starting the assembly of your KatanaS, remove each part from its bag and protection for a
prior inspection. Closely inspect the fuselage, wing panels, rudder, and stabilizer for damage. If you
find any damage or missing parts, contact the place of purchase.
If you find any wrinkles in the covering, use a heat gun or covering iron to remove them. Use
caution while working around areas where the covering material overlap to prevent separating the
covers.
Using the manual
This manual is divided into sections to help make assembly easier to understand and to provide
breaks between each major section.
In addition, check boxes () have been placed next to each step to keep track of each step
completed. Steps with two boxes indicate that the step will require repeating, such as for a right or
left wing panel, two servos, etc.
Remember to take your time and follow the directions.
Warranty information
SebArt garantees this kit to be free from defects in both material and workmanship at the date of
purchase.
This warranty does not cover any parts damage by use or modification, and in no case shall
SebArt’s liability exceed the original cost of the purchased kit.
Further, SebArt reserve the right to change or modify this warranty without notice.
In that SebArt has no control over the final assembly or material used for the final assembly, no
liability shall be assumed or accepted for any damage of the final user-assembled product. By the
act of using the product, the user accepts all resulting liability.
If the buyer is not prepared to accept the liability associated with the use of this product, the buyer
is advised to return this kit immediately in new and unused condition to the place of purchase.
SebArt di Sebastiano Silvestri
Via Trento 69/3
38017 Mezzolombardo (TN) – Italy
www.sebart.it
4

Section 1 – wing fillet installation
 step 1
On the fuselage, with an hobby knife open carefully in the covering the holes for wing panel three
pins, wing tube, wing retainer and servo lead.
 step 2
Locate the corresponding wing fillet to the wing.
 step 3
Locate the wing tube in the fuselage, and carefully slide the wing panel. Make sure the wing panel
alignment pins slide into the holes provided in the fuselage. If necessary sand a little the holes, to let
enter the pins free. Test fit the wing fillet and his alignment.
5

 step 4
Once satisfied with the fit, glue the wing fillet to the wing panel using medium CA.
Use the glue carefully avoid over runs onto the area to be covered with the material.
 step 5
Use the covering iron carefully, at a medium temperature, to glue the cover material down around
the area of the fillet. Use caution while working around areas where the cover material overlaps to
prevent separating the covers.
step 6
Repeat steps 1 through 5 for the remaining wing panel and wing fillet.
6

Section 2 – ailerons installation
 step 1
Locate the five aileron pin-hinges included in the hardware and trial fit in their place and verify the
correct position and alignment of the aileron with the wing panel.
 step 2
Before to glue the hinges, carefully put few drops of oil in the hinge of the pin-hinges.
Locate and glue the five hinges with 5 minutes epoxy, verifying their correct alignment.
 step 3
Carefully glue, with 5 minutes epoxy, the hinges into the aileron.
7

 step 4
Work the aileron up and down some times to work the hinges and check for proper movement.
step 5
Repeat steps 1 through 4 for the remaining wing panel.
Section 3 – aileron servo & control horn installation
 step 1
Locate the following items, included in the hardware, plus the long arm and servo (not included).
Install the servo hardware (gommets and eyelets) included with the servo.
8

 step 2
With the hobby knife open the servo bay and the control horn location.
 step 3
Place the fibreglass control horn into aileron, check for correct alignment and glue it with some
drops of medium CA.
 step 4
Drill the location for the four self-tapping screw using a 1.5mm drill bit and install the servo into
the wing panel as per the picture.
9

 step 5
Bring out the servo lead.
 step 6
Install the control horn as per picture.
step 7
Repeat steps 1 through 6 for the remaining wing panel.
10

Section 4 – elevator installation
 step 1
Locate the following items, included in the hardware.
 step 2
Cut only one (1) of the three hinge as follow.
 step 3
Place the three hinges in their holes, and verify the correct position and alignment of the elevator
with the stabilizer panel.
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 step 4
Prepare the hinges for the application, using one small drop of sinthetic oil in their center of
movement, like for the ailerons application.
 step 5
Use good quality 5 minutes epoxy to glue the hinges in the elevator, and remember to check the
correct sense of work for every hinge. If necessary clean the zone of the hinges with paper towels
and rubbing alcohol.
 step 6
Always with 5 minutes epoxy glue the hinges in the stabilizer. If necessary clean the zone of the
hinges with paper towels and rubbing alcohol.
12

 step 7
Work the elevator up and down some times to work the hinges and check for proper movement.
 step 8
With the hobby knife remove the cover in the control horn location.
 step 9
Place the fibreglass control horn into elevator, check for correct alignment and glue it with some
drops of medium CA.
step 10
Repeat steps 1 through 9 for the remaining elevator.
13

Section 5 – elevator servo installation
 step 1
Install the servo hardware (gommets and eyelets) included with the servo.
Locate the following items, included in the hardware, plus the long arm and servo (not included).
 step 2
With the hobby knife open the stabiliser location on fuselage and the elevator servo bay.
14

 step 3
Drill the location for the four self-tapping screw using a 1.5mm drill bit and install the servo into
the wing panel as per the picture.
 step 4
Locate the stabilizer carbon tube into fuselage and carefully slide the stabilizer on it too.
 step 5
Fix the stabilizer on the fuselage with the provided 3mm screws and washers.
15

 step 6
Install the control horn as per picture.
step 7
Remove the stabilizer, and repeat steps 1 through 6 for the opposite side of the fuselage.
Section 6 – tail wheel & rudder installation
step 1
Locate the following items, included in the hardware.
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step 2
Using a 2mm drill bit, carefully drill the hole into rudder, 25mm from the base level, for the tail
wheel. With the hobby knife cut a groove 25mm length into the rudder as follow.
step 3
Assemble the tail wheel as follow.
step 4
Locate the tail wheel on rudder and glue it with some drops of medium CA.
17

step 5
Prepare the hinges for the application, using one small drop of sinthetic oil in their center of
movement.
step 6
Use 5 minutes epoxy to glue the hinges in the rudder, remember to check the correct sense of work
for every hinge. If necessary clean the zone of the hinges with paper towels and rubbing alcohol.
step 7
Always with 5 minutes epoxy glue the hinges in the fuselage. If necessary clean the zone of the
hinges with paper towels and rubbing alcohol.
18

step 8
Work the rudder right and left some times to work the hinges and check for proper movement.
step 9
Using a 1,5mm drill bit, carefully drill the two holes for fixing the tail wheel on the fuselage.
step 10
Use the two self-tapping screws to fix the tail wheel as follow.
19

Section 7 – rudder servo installation
step 1
Install the servo hardware (gommets and eyelets) included with the servo and locate the following
items, included in the hardware.
step 2
Drill the location for the four self-tapping screw using a 1.5mm drill bit and install the servo as per
the picture.
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