Discuss 4m

User Manual: Discuss-4m

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Simple easy DUO Discus XL Manual
Model No:FF-B040/FF-B041
Scale Glider Radio control airplane Wingspan:4000mm
1
17

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16

17

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14 13
12 11
8

9

7

6

10

5

4

3

18

17
17
17

Basic parts
1 Carbon Rod 12*680mm for main wing joinner

10 M4*20 Butterfly Screws for lock the wings

2

Carbon Rod 10*485mm *2pcs for second wing
joinner

11 FF12-05 Linkage Stoppers*6/set

3
4
5
6
7
8
9

Plastic Serve tray *5pcs
Carbon pin 6*50mm 4pcs for stable wings
Push Rod M2*20 *5pcs for Flap,rudder and aileron
004-00140 Hinges*3
Soft wire*2pcs for elevator
LL04-405B Horns 8pcs for push all the servos
Metal Pinned Hinges*4pcs for canopy

12
13
14
15
16
17
18

M3*8 Screws*4pcs for locked motor
Metal Collar*2/set
M1.5 *9mm Screws 20 pcs
Metal Clevis M1.5 *3pcs
M4*20 Screws*2/pcd for locked the stable tail
Canopy.(Optional Seat and Cockpit /sets)
FF1-130 Optional Alum retract with servo tray*1/set

UNDER SAFETY PRECAUTIONS
This radio controlled plane is not a toy!
Always keep this instruction manual ready on hand for quick reference.
Assemble this kit only places out of children reach.
First-time builders of RC radio power model should seek the advice of experienced modellers
before beginning assembly and if they do not fully understand any parts of the construction.
Taking out liability insurance is recommended.
You are responsible for this model’s assembly and safe operation.

Page 1

You need to purchase the following accessories power system separately to complete the model.

FF3-309B Motor 720kv 1pcs
FF4-402 ESC 60A 1pcs
FF10-107 Alum Propeller &
sprinner 11*7 φ38mm /1set
FF9-912 MG Servo 17g 7pcs

FF14-03 Servo extension cable: 800mm 8pcs
FF14-06 Y# extension cable: 300mm *2pcs
Battery 5S 35C 3500-4000mAh 1pcs for electric

(1). Installing The wings: need to preparing:17g Servos*4pcs (Flyfly item no:FF9-912) Servos extension cables
800mm*6pcs (Flyfly item no:FF14-03)
Parts:Horns(No:LL04-406A/B),Servo tray ,Push robs(No:NN17-00401),Linkage Stoppers(No:FF12-05)
Push Rod Fixed to
the servo horns
Put the servo in to the servo
tray, 2 of screws locked

Locked with 4screws
Push rod & Lingkage
Stoppers

After installed like this photos

After finished like this photo, Adjust the aileron &
Flaps,then locked the Linkage stoppers,please
remember the servo horns between the Linkage
stoppers always keep in a flat line
Copyright 2015 Flyfly hobby
Web: www.flyflyhobby.com

Designed and Manufactured by: Flyfly hobby Mfg.
Email:info@flyflyhobby.com

Page 2

(2). Installing elevator & Tail Rudder: need to preparing 17g metal servos*2 pcs (FF item no:FF9-912)
Servos extension cables 800mm*2pcs (Flyfly item no:FF14-03)
Parts:Horns(FF item no:LL04-406A/B),Soft wire,Metal collar, servo tray, push rod
Linkage Stoppers(FF item no: FF12-05)
A/B Glue 3pcs
Hinges to the tail
& rudder

Soft wire

Metal Collar

Horns

Elevator After installed like this photos
Servo tray

Elevator servo wire across
from here to the nose fusealge

Locked the Elevator on the tail
fuselage

Soft wire across from tail to the
nose fuselage here. Used Linkge
Stoppers locked the wire

Page 3

(3). Landing gear installing: : need to preparing 17g metal servos*1 pcs (FF item no:FF9-911)

Servo for Rudder

Push Rob for
work retract
and Clevis

Servo for retract

After installed
servos,put landing gear
in here

Locked with
2 screws

Used this
wood put here

(4). Canopy installing

Cut the transparent canopy shape, used AB
glue to fixed on the canopy framework Like
this photos

(5). Joined wings and Decals

Page 4

AB Glue the plywood on the
framework made a 6mm hole for
canopy locked,please adjest hole
where is fit the canopy locked
befored you made.

1
2
3
4

On the wing left side & right side
Put on the nose fuselage right and leftsite
On the tail right and left side
On the fuselage rigth and left side

1

3
3

4
2

1

(6). Motor & ESC & Adjustment

75mm

Copyright 2015 Flyfly hobby
Web: www.flyflyhobby.com

Designed and Manufactured by: Flyfly hobby Mfg.
Email:info@flyflyhobby.com

Page 5
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