SUKHOI

SU-27

for 2 AMT Mercury

or 2 RAM 1000 / 750
or 2 Jet CAT P 80 / 120

Assembly Manual

ZI le chenet, 91490 Milly La Foret, FRANCE

Tel : 33 1 64 98 93 93
Fax : 33 1 64 98 93 88
E-mail : aviation.design@wanadoo.fr
www.adjets.com

Version 15/11/2002

1
INTRODUCTION
The Su-27 from is designed for high thrust jet engines.
It is a scale kit, with all the panel lines engraved in the fuselage and a lot of scale details (gears, hinges,
cockpit...). It is fully molded in fiberglass, carbon and epoxy. Up to 80% of the work is done in our
factory.
The flight characteristics are excellent with low and high speed capability.
The model has plug in wings, stabs and fins.
The Sukhoi will operate from prepared grass fields (70 meters long) or tarmac surfaces.

KIT FEATURES
- High quality, grey gel-coated epoxy-glass fuselage. All the panel lines are engraved. The fuselage is in 2
parts for shipping.
- Nose cone and central tail boom in epoxy glass
- Air brake molded in epoxy-glass
- Main gear doors
- Canopy frame molded in epoxy-glass
- 2 Exhaust nozzle.
- 2 Epoxy-glass inlets
- 2 Epoxy-glass ductings
- Fully molded epoxy carbon wings and stabs with aluminium spar already glued.
- Fully molded epoxy carbon fins with aluminium spar already glued
- 2 ventral fin in epoxy
- Wing tip rails
- All plywood and wood parts pre-cut to shape where necessary.
- Air cylinder for air brake.
- All hardware necessary.
Following items are included in the kit
For the fuselage :
a set of screws + blind nuts for the gear
For the canopy, 1hatch latch
For the air brake, 1air cylinder + tubing and air valve
For the stabs :
4 ball bearing for the stabs
4 ball bearing mounting
8 screws M3x16 mm long
2 aluminium link M4
2 threaded rod M4
2 carbon control horns
- ABS cockpit interior and scale accessories.
- Clear formed canopy.
- Cockpit detail kit include 1/8 full body jet pilot, 1/8 ejector seat & instrument panel.
- pitot probes and incidence probes.
- vacuum parts
- instructions in English and plan.

To complete the kit :

The following items are not included in the kit. They are available from .

2
Landing gear + gear doors kit : ref : ADJ 410 for the Su 27
scale retractable landing gear is specially designed for the Sukhoi.
It is made in aluminium and include also plastic parts
For the gear, it includes 3 rotating retracts system, 3 oleo legs, 4 way valve, tubing, connectors, air tank,
filling valve, ...
For the doors, it includes 3 air cylinders, electronic gear door cycler (3 chanels), 4 way valve, tubing,
connectors, air tank, door hinges, ball links
It includes also 2 x 125 mm diameter wheels + scale cover + brakes and 1 x 88 mm diameter front wheel
It includes valve, tubing, connectors, air tank, filling valve.

Kevlar Fuel tanks : ref ADJ 450

2 Fuels cells molded in kevlar. Capacity : 2 x 2.4 liters
It includes also all tubing and upper tank

Variable pressure brake control valve : ref : ADT Brk

2 stainless steel tailpipe : ref : ADJ 460

Jet Engines :
2 Complete AMT Mercury jet engines
or 2 RAM 750 or RAM 1000 jet engines
or 2 Jet Cat P120 jet engines

Not included in the different package :

0.3 kg epoxy and glass fiber
ZAP CA

DISCLAIMER
assumes no liability for the operation and use of these products.
The owner and operator of these products should have the necessary experience and exercise common
sense. Said owner and operator must have a valid Model Airplane license and insurance, as required.

FIBREGLASS PREPARATION
The inside of the fuselage should be sanded with fresh #80 grit paper for best glue adhesion where
bulkheads and other attachments are fixed.

GLUING TECHNIQUES
All the plywood formers should be fitted with cyano adhesive and then glued with epoxy and glass fiber
tape. All other parts should be glued with epoxy.

3
CONSTRUCTION
Front FUSELAGE
Gear doors :
Cut just one side off the front gear door according to the engraved panel lines.
Glue the 3 door hinges with cyano (take care of the position according to the plan).

Finish to cut the front gear door 15 mm longer than the engraved panel lines ( 10 mm forward, 5 mm
backward).

Make 2 fence in the front gear door according to the engraved panel line

Glues with CA the plastic vacuum parts in the front gear door

4
Frame :
Assemble the frame C1, C2 and C3

Desassemble them , fit them in the fuselage and assemble them.

Glue them in the fuselage according to the plan (check distance between the C2 former and the fuselage
end)

Epoxy the bulkheads in place : the 2 formers must be glued with epoxy and glass fiber.
Cut some glassfibre tapes (30 mm large and 10 cm long).
Glue this tape with epoxy overlapping all the formers and the fuselage.
Let them dry overnight.

5
Rear FUSELAGE
Cut the 2 gear doors according to the engraved panel lines.
Also cut some 4 mm larg slot for the wood location, according to the photos and line drawn on the fuselage

Gear frame :

Drill the 4 mm holes in C10

Insert 4 M3 blind nuts

Screw the aluminium gear block on C10 with 2x M3 x 12 alen screw

Drill bigger (4 mm diameter) the 4 holes in the air cylinder steel mounting.
Screw the air cylinder on C15 and on C10 with 2x M3x16 philips screw
But don’t tighten it too much so that the air cylinder can have a little play up and down

Screw the air cylinder ball link on the aluminium pivot with 1 M3x 16 alen screw.

6
Insert the locking air cylinder in the aluminium gear block.
Screw the small air cylinder and C16 on C10 with 2x16 parker screw.
Check that it lock the gear when it is extended and it unlock the gear when it is retracted.
Glue C16 on C10

Assemble the frame C10, C11, C12 and C13

Fit them in the fuselage and assemble them.
Insert C14 in the fuselage and drill a 3 mm hole throught the aluminium bock, the fuselage and C14
Remove C14 and increse the hole diameter to 4 mm
Insert a M3 blind nut

Epoxy all the bulkheads in place : C10, C11, C12, C13, C14 must be glued with epoxy and glass fiber.

7
Cut some glassfibre tapes (30 mm large and 5 cm long).
Glue this tape with epoxy overlapping all the formers and the fuselage.

Screw the gear box to C14 with M3x12 alen screw puting some epoxy on C14.

Insert some tape IN the fuselage overlapping all the formers and the fuselage.
Check to glue very strongly C14 in the fuselage against the main fraime

Let them dry overnight.

Rear frame and bearing installation :

Cut out all hatches and make the necessary holes in the fuselage according to the photos.
Cut the back of the fuselage at the bearing position.

Cut the slot (6 mm larg, 20 mm height) in the fuselage (fin root location) for the elevator control horn
It will be covered by the fin
Glue the bearing in the mounting with threadlock glue.
Screw the 4 bearing mounting to the rear fuselage with M3x16 alen screw.

8
Screw the 2 servos (9 kg.cm torque) on each plywood frame C20.

Connect the 2 servos together and try them with your radio. They must move without any bad noise

Insert them in the fuselage.

Check that they can move without problem.

Glue C20 with CA for the moment.

Fin assembly :
Trim all the parts of the fin.
Trim also the aluminium tube and pins

If necessary, drill again all the holes in the fuselage for the fin tube and pin
Insert some greass in the fuselage aluminium tube

Cut a fence in the back of the fit for the servo

and ball link

Fit the fin on the fuselage.

Check that the servo can move without
problem.

Drill a hole through the aluminium joining

tube to secure the fin
Insert a screw to secure the fin

9
Stabs assembly :
First you have to balance the stabs.
Drill a hole in the stab root (leading edge)
Insert some lest (about 75 grammes) in each stabs

Fit the stab on the bearing fuselage to see if it is

balanced well.
Glue the lest with epoxy

Insert the 12 mm washer on the aluminium tube

Fit the stab in the fuselage bearing

Secure the stab with a screw through the aluminium tube

Draw a line on the stab just in front of the servo arm

Cut a 2 mm larg slot for the carbon control horn

Fit the control horn in the stab and fit the fin on the fuselage.
Check that the control horn is just in the middle of the fin
slot

Sand the carbon control horn for a best glue adhesion

You can also drill some small holes in the bottom of the
horn for best gle adhesion
Glue the control horn in the stab with epoxy

Let them dry overnight.

Connect the servo to the carbon control hon with the 2 M4 aluminium
ball link and the M4 threated rod

10
Air brake :
Fit the air brake on the fuselage.
Draw a line on the fuselage at 18 mm from the fuselage edge

Cut 2 slots in the air brake location fuselage

Check that the air brake can move without problem in this slot

Fit the air brake on the fuselage.

Drill a 2 mm diameter hole through the fuselage and the air
brake just on the line
Take care that the 2 side holes are parallel

Fit a 2 mm piano wire through the fuselage and the air brake
And check that it can move without problem

For the air cylinder location, Cut a slot in the top of the
fuselage according to the plan

Fit a 2 mm piano wire in the cylinder hole and glue the piano
wire IN the fuselage according to the plan

Cut a slot in the air brake according to the plan

Glue the plywood control horn C24 in the air brake with epoxy

Fit the air brake on the fuselage with the piano wire
Connect the air cylinder to the control horn with the
aluminium link

11
Air intakes
Glue with epoxy the plywood reinforcement C26

Cut the air intakes as engraved

Fit the air intake on the fuselage.

Drill a 3 mm hole throught the plywood reinforcement and the fuselage
Insert a 3 mm screw

Insert M3 blind nut in C25

Glue with epoxy C25 in the fuselage

Screw the air intake on the fuselage with a M3 screw

Drill 4 x 2 mm holes through the intake and C10

Screw the 4 parker screws

Unscrew the air intake from the fuselage. You will have
now to glue the ducting in the air intake

Cut the back of the ducting so that it will not touch the
engine mounting frame.

Fit the ducting in the air inlet and glue the leading edge
with epoxy and microballon
Glue also the rear of the ducting to the air intake
Put some clothes pegs all around the intake leading eadge
during drying.
Let them dry overnight.
Trim all the leading edge.

12
Gear doors
Cut the main gear doors in 3 parts

Cut 2 slots in the fuselage as engraved for the 2

Robart door hinges.

Glue the 2 Robart hinges against the fuselage with

CA, just in front of the 2 slots.
They must be outside of the fuselage.

Glue the plywood reinforcement C28 on the main gear door with quick epoxy
Put 4 cloth pegs

Glue the 2 hinges on the gear door with epoxy. Adjust carefully them so that the gear door is in front of the
fuselage hole
Secure the hinges with 2 parker screw and plywood reinforcement C29 inside

13
Drill a 2 mm hole at the end of the rear hinge
Insert the steel ball ling for the air cylinder

Srew the ball link plastic end to the 2 ’’ air cylinder

Screw the air cylinder on the obechi block C30 with the
parker screw

Extend the air cylinder

Fit the plastic ball ling on the metal ball.

Glue with CA the obechi wood block on the fuselage to have to

correct gear door angle (when the door is open)
Check that it close without problem

Rear gear door :

Glue the 2 door hinges

with cyano (take care of
the position according to
the plan).
Cut the rear gear door
according to the
engraved panel line.

14
Glue with CA the fix piece on the fuselage

Check that it can open and close without problem

Fit a spring on the rear door hinges so that the

door automatically close when the gear goes up.

Wings:

Cut the location of the 2 gear doors hinges

in the wing according to the engraved panel
line.

Wing tip missile rails :

Fit the wing tip missile rails with 2 parker screws 3x20

15
Drill a hole (about 15 mm diameter) in the top of the
main frame for the electric wire and air tubing

Landing Gear :
Main gear :

You have now to connect all the gear, door and brake
tubing.

Fit the main oleo legs in the retracts. Check that the 2
wheels are parallel.
Drill a 2.5 mm hole through the oleo legs and the main
gear
Insert a M3 screw.

Retract and extend the legs to check that the wheels fit
well in the fuselage.

Front gear

Screw the front landing gear on C2

Fit the steering control arm + the oleo legs on the retracts
Glue the ABS cover on the wheel hole

16
Screw the M2 ball link on the central door hinge
Screw the air cylinder on the ply renforcement C29.
Connect the 1‘‘ air cylinder link to the ball link and check
that the door closes perfectly : the door is open when the
cylinder is fully extended and the door is closed when the air
cylinder is retracted.
Glue C29 on the fuselage.

Connect all tubing to the retract and the door cylinder.

Screw the steering servo on the C4 frame

The steering servo should be a 4 kg.cm servo

Glue C4 on C2 just in front of the steering control arm

Connect the servo to nose gear steering arm with 2 x M3
link and M3 threaded rod.

Nose
C33 will be removable for an easier access in the fuselage.
Glue the 4 plywood reinforcement C32 in the fuselage acording to the plan.
C33 must slide beetween the 4 plywood parts C32
Epoxy C32 in place : they must be glued with epoxy and glass fiber, overlapping all the formers and the
fuselage.
Insert C33 beetween C32. Drill a hole through C32 and C33 and fit a M3 screw + blind nut

Fuel tanks
You will now have to install the 2 fuel tanks
in the fuselage before to continue the
assembly.

Fit the 2 kevlar tanks in the fuselage against

the main frame. Secure them with silcon glue

Glue with silicon glue the 2 upper tanks just

in front of the main tanks

17
Assemble the fuselage
You have now to assemble the 2 part of the fuselage together.

If you have a Su 27, you can only screw the 2 parts together. It will be easier later to repair any damage.

Fit the 2 parts in front of each other.

Drill a 15 x 1.5 mm hole through the 2 parts to insert parker screw.

If you want only to screw the fuselage together (disassemble later),

glue 15 x 3 mm plywood reinforcement on the hole location.
Screw the 2 parts with 15 parker screws.

If you glue the 2 parts, put some epoxy on both side.

Fit the 2 parts together and screw au the parker screw. Let it dry
overnight. Remove the screw after drying.

Assemble the central tail boom

If you want, you can only screw the 2
parts together. It will be easier for
handling.
But it is also possible to glue it.

Fit the 2 parts in front of each other.

Drill a 6 x 1.5 mm hole through the 2
parts to insert parker screw.
Glue 6 x 3 mm plywood reinforcement
on the hole location.
Screw the 2 parts with 6 parker screws

18
CANOPY :
Front canopy :
Cut the front fiberglass canopy
Cut the clear canopy in 2 parts
Cut the front clear canopy according to the
engraged line
Glue the glear canopy INSIDE the fuselage
with Zap canopy glue
Let it dry overnight.
Cut the front vacuum part. Paint it in black
Glue it inside the front canopy with Zap
canopy glue
Let it dry overnight.

Glue the on the canopy with canopy with Zap canopy glue

Rear canopy :

Cut the rear fiberglass canopy from the

canopy frame
Cut the rear clear canopy according to the
engraged line
Glue the glear canopy INSIDE the canopy
frame with Zap canopy glue
Let it dry overnight.
Cut the rear vacuum part. Paint it in grey
Glue it inside the canopy frame with Zap
canopy glue
Let it dry overnight.

Insert the hatch latch in the fuselage to

secure the canopy frame on the fusleage.

19
Cockpit
Paint all the part of the cockpit, instrument panel and ejector seat.

Ejector seat :
Cut the vaccum part according to the photo
Glue the 2 vaccum parts together with CA

Glue the platic parts on the vaccum parts according to the photos.

Instrument panel :

20
Cut the vaccum part according to the
photo

Glue the platic parts on the vaccum

parts according to the photos.

Fit the ejector seat in the vaccum part

Pilot : cut the pilot legs

Fit it in the cockpit

Air intake Fairings :

Cut the vaccum part according to the
photo

Glue them on the air intake with CA

21
Gear locking mechanism fairings :
Cut the vaccum part according to the photo

Glue them on the air intake with CA

Front gear fairing :

Cut the 3 vaccum part according to the photo

Glue the big rear part under the fuselage with CA

Glue the small front part on the front gear door

Install a hinges on
the rear part and
meium part.

Screw the 5 mm
aluminium tube on
the oleo leg.

Glue the 6 mm tube

on the hinges

Drill a hole in the

fuselage so that the
aluminium tube can
go in the fuselage
when the nose gear
goes up

22
Stab servo fairings :
Cut the vaccum part according to the photo

Glue them on the stabs with CA

Check that the stabs can move without problem

Pitot :
Drill a 2 mm hole in the
fuelage.

Glue the 2 pitot with CA.

Secure it inside with

epoxy.

23
Ventral fins:
Fit the ventral fins under the fuselage.

Engine installation.

For less CG problem, you will have to fit the engine as forward as possible on their mounting.
Fit the engien on their mounting
Drill 4 x 2 mm hole and insert the parker screw in the wood.
Drill a hole for all the tubing and engine connector.

24
Exhaust tube
Fit the aluminium ring on the exhaust tube.
Rivet the 2 part together.
Insert 3 x M3 screw in the aluminium ring to adjust the
clearance between the engine and the exhaust tube.
The exhaust tube must just overlap the engine exhaust cone.

Fit the exhaust in the fuselage

Screw an aluminium pad on the exhaust to fit it on the main

rear frame

Important : Protect all electric wire with ceramic fiber.

The rear exhaust cone can be fitted with 3 parker screw or with
silicon glue.

FINISHING TIPS

Now you have to remove the wax from all the parts to paint.
The best way to do this is to sand all the surfaces with a "scotch brit" scouring pad used to wash up the
crockery
All the parts can also be sanded with #400 grit paper to remove wax.

Do not apply primer on the fuselage, wings, stabs and fins.

They must be directly painted.

Think light : excessive paint build-up will add unnecessary weight to the model. Apply light, thin coats of
paint and sand between coats to avoid excess weight.

Radio, ECU, batterie, tubing... installation :

Connect all the engine tubing to the fuel pump.
Connect the fuel pump to the fuel tank.
Connect all the engine connector the the ECU.

Connect all the retract tubing according the manual to the air valve.

Connect all radio wire

25
Fit the radio and ECU close to the cockpit

Fit the ECU batterie and radio batteries in

the nose (on the C33 frame)

Secure all the screw with threated lock.

RADIO

The Sukhoi 27 needs very good servos :

For the 2 tailerons, we recommend to use 4 very good servos with metallic gears : 9 kg torque

NG steering : 1 servo 4 kg torque

Retract + gear doors + locking : 3 micro servos 1 kg torque

You normally need 2 x 1700 Mah batteries power to have a correct Center of Gravity. The correct CG is
drawn on the plan in attach.

Note : balance the model with the gear down and the fuel tanks empty.

You also need 1 electronic mixers on your radio.

You must mix the 2 tailerons like a delta.

Taileron : in roll : 30 mm up and 30 mm down at the leading edge

in pitch : 40 mm up and 40 mm down at the leading edge

With a Mercury engine or a RAM engine, the total weight of the Su 27 is 19 kg tanks empty

Important note : Pay very careful attention to structural integrity. This jet can reach speeds of
over 300 KPH. It is your responsibility to operate it safely.

Specifications may change without notice.

26