Assembly Manual
Assembly Manual
The World’s Finest Electric Aircraft www.SapacAmerica.com
Specifications
Material:
Length:
Wing Span:
Wing Area:
All Up Weight:
Wing Loading:
EDF:
Recommended Motor:
Recommended ESC:
Recommended Battery:
Radio System:
T
T
-
-
45 Goshawk Composite V2
45 Goshawk Composite V2
Composite Fuselage, Balsa Wings
39.3 in
37.4 in
1.937 ft²
54 - 65 oz
27 - 33 oz/ft²
70mm with 5 Blade Fan
2842MB1 @ 3200KV (1100W)
80A+
LiPo, 4s 3300 - 3700 mAH
4 - 6 Channel (optional retracts)
SAPAC America Import and Distribution, Inc., (Sapac) warranties that the Products purchased (the “Product”) will be free from defects in materials and
workmanship at the date of purchase by the Purchaser.
(a) This warranty is limited to the original Purchaser (“Purchaser”) and is not transferable. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS
WARRANTY IS THE EXCLUSIVE REMEDY OF THE PURCHASER. This warranty covers only those Products purchased from an authorized Sapac dealer.
Third party transactions are not covered by this warranty. Proof of purchase is required for warranty claims. Further, Sapac reserves the right to
change or modify this warranty without notice and disclaims all other warranties, express or implied.
(b) Limitations – SAPAC MAKES NO WARRANTY OR REPRESENTATION, EXPRESS OR IMPLIED, ABOUT NONINFRINGEMENT, MERCHANTABILITY OR
FITNESS FOR A PARTICULAR PURPOSE OF THE PRODUCT. THE PURCHASER ACKNOWLEDGES THAT THEY ALONE HAVE DETERMINED THAT THE
PRODUCT WILL SUITABLY MEET THE REQUIREMENTS OF THE PURCHASER’S INTENDED USE.
(c) Purchaser Remedy – Sapac’s sole obligation hereunder shall be that Sapac will, at its option, (i) repair or (ii) replace, any Product determined by
Sapac to be defective. In the event of a defect, these are the Purchaser’s exclusive remedies. Sapac reserves the right to inspect any and all equip-
ment involved in a warranty claim. Repair or replacement decisions are at the sole discretion of Sapac. This warranty does not cover cosmetic damage
or damage due to acts of God, accident, misuse, abuse, negligence, commercial use, or modification of or to any part of the Product. This warranty
does not cover damage due to improper installation, operation, maintenance, or attempted repair by anyone other than Sapac. Return of any goods by
Purchaser must be approved in writing by Sapac before shipment.
SAPAC SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR PRODUCTION OR COMMERCIAL LOSS
IN ANY WAY CONNECTED WITH THE PRODUCT, WHETHER SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, NEGLIGENCE, OR STRICT LIABILITY.
Further, in no event shall the liability of Sapac exceed the individual price of the Product on which liability is asserted. As Sapac has no control over
use, setup, final assembly, modification or misuse, no liability shall be assumed nor accepted for any resulting damage or injury. By the act of use,
setup or assembly, the user accepts all resulting liability.
If you as the Purchaser or user are not prepared to accept the liability associated with the use of this Product, you are advised to return this Product
immediately in new and unused condition to the place of purchase.
Information in this document is subject to change without notice
© 2009, SAPAC America Import and Distribution, Inc. All rights reserved
September 2009 P/N SAP11500M Rev. A02
The SAPAC T-45 Goshawk Composite is not a toy. It is an advanced remote control aircraft requiring advanced
building techniques and advanced piloting techniques. If this is your first remote control aircraft you are encouraged
to find an experienced builder and an experienced pilot to help you enjoy your T-45.
We recommend you read through the complete manual before starting your assembly to familiarize yourself with the
steps you will be following when putting together your T-45.
§ Table of Contents
T-45 Goshawk Composite iii
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What’s in the Box ................................................................................................... 1
Airframe Components ........................................................................................................... 1
Additional Kit Components .................................................................................................... 1
Main Hardware Bag Contents [H1]......................................................................................... 2
Thrust Duct & Elevator Hardware Bag Contents [H2]............................................................... 2
Additional Required Components ........................................................................................... 3
Available Optional Components ............................................................................................. 3
Assembly Sequence ................................................................................................ 4
Wing Control Surfaces ............................................................................................ 5
Hinge Wing Control Surfaces ................................................................................................. 5
Cut Servo Slots in Wing ........................................................................................................ 6
Mount Aileron and Flap Servos to Servo Covers....................................................................... 7
Bond and Mount Control Horns.............................................................................................. 8
Route Servo Wires................................................................................................................ 8
Make Control Rods and Mount Servos .................................................................................... 9
Main Gear, Fixed (Optional)................................................................................... 11
Build Gear Mounts.............................................................................................................. 11
Cut Slots in Wing for Gear Mounts ....................................................................................... 11
Prepare Gear Mount Covers................................................................................................. 12
Bond Main Gear ................................................................................................................. 13
Main Gear Final Assembly ................................................................................................... 14
Main Gear, Retractable (Optional) .......................................................................... 15
Select Retractable Gear Strut Geometry ............................................................................... 15
Cut Openings in Wing for Mounts and Gear .......................................................................... 16
Mount Gear ....................................................................................................................... 17
Route and Connect Air Lines ............................................................................................... 18
Final Assembly ................................................................................................................... 18
Wing Belly Pan ..................................................................................................... 19
Fit Wing Bolt Reinforcement ................................................................................................ 19
Trim and Fit Belly Pan......................................................................................................... 19
Trim Wing Covering............................................................................................................ 20
Bond Wing Bolt Reinforcement Plate .................................................................................... 21
Bond Belly Pan................................................................................................................... 22
Rudder Modification (Optional) .............................................................................. 23
Separate Rudder from Fuselage........................................................................................... 23
Reinforce Rudder ............................................................................................................... 23
Mount Rudder Servo........................................................................................................... 24
Reinforce Vertical Stabilizer ................................................................................................. 25
Hinge Rudder and Mount Control Horn................................................................................. 26
Make Control Rod............................................................................................................... 27
Nose Wheel, Fixed (Optional) ................................................................................ 28
Mount Nose Wheel Strut ..................................................................................................... 28
Mount Steering Servo ......................................................................................................... 29
§ Table of Contents
iv
T-45 Goshawk Composite
Make Control Rod............................................................................................................... 29
Nose Wheel Final Assembly................................................................................................. 30
Nose Wheel, Retractable (Optional) ....................................................................... 31
Cut Opening in Fuselage for Nose Wheel.............................................................................. 31
Mount Nose Gear Retract Unit ............................................................................................. 32
Mount Strut and Test Retract Motion.................................................................................... 33
Mount Steering Servo ......................................................................................................... 34
Assemble Pull-Pull Steering ................................................................................................. 34
Air Retract Mechanism (Optional)........................................................................... 36
Mount Retract Servo........................................................................................................... 36
Mount Actuator Valve and Linkage....................................................................................... 36
Mount Main Gear Valve and Connect Nose Gear Air Line........................................................ 37
Mount Fill Valve and Air Tank .............................................................................................. 38
Elevators ............................................................................................................. 40
Mount Elevator Servo ......................................................................................................... 40
Mount Elevator Coupler....................................................................................................... 41
Assemble and Mount Elevator Control Rod............................................................................ 43
Bond Elevators................................................................................................................... 44
Fan Installation .................................................................................................... 45
Assemble Fan Unit.............................................................................................................. 45
Mount Fan Unit .................................................................................................................. 46
Wire and Mount ESC and BEC.............................................................................................. 48
Thrust Duct.......................................................................................................... 49
Assemble Thrust Duct......................................................................................................... 49
Insert Thrust Duct in Fuselage............................................................................................. 50
Bond Thrust Duct Locating Ring .......................................................................................... 50
Bond Thrust Duct to Inside of Fan Shroud ............................................................................ 51
Trim Away Excess Thrust Duct ............................................................................................ 51
Radio Installation ................................................................................................. 52
Radio Installation Overview Diagram.................................................................................... 52
Wire and Mount BEC and/or Receiver Battery ....................................................................... 52
Mount Receiver and Connect Servos .................................................................................... 53
Test Radio Installation and Set-up Control Throws ................................................................ 54
Canopy and Decals ............................................................................................... 55
Trim the Cockpit and the Canopy......................................................................................... 55
Mount Cockpit using Supplied Magnets................................................................................. 56
Glue Cockpit to Canopy....................................................................................................... 57
Place Decals ...................................................................................................................... 58
Before You Fly...................................................................................................... 59
Set Up Center of Gravity & Verify Control Throws and Directions............................................ 59
Check Power System .......................................................................................................... 59
Range Check Your Radio..................................................................................................... 60
Flying Characteristics.......................................................................................................... 60
Parts Cross Reference........................................................................................... 61
§ What’s in the Box
T-45 Goshawk Composite 1
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Airframe Components
}
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The following are the main airframe components
of the T-45.
Airframe components
o
oo
o F – Main Fuselage
o
oo
o E – Stabilizers (Elevators)
o
oo
o W – Wing
o
oo
o W1 – Wing Belly Pan
o
oo
o C – Cockpit & Canopy
Additional Kit Components
}
}}
}
The following are the additional components
included with the T-45 Kit.
Additional kit components
o
oo
o H1 – Main Hardware Bag
o
oo
o H2 – Thrust Duct & Elevator Hardware
o
oo
o M – EDF (Electric Ducted Fan) Unit
o
oo
o D – Decal Set
§ What’s in the Box
2 T-45 Goshawk Composite
Main Hardware Bag Contents [H1]
}
}}
}
The following are the components packed in the
Main Hardware Bag [H1]:
Main hardware
o
oo
o W2 – Wing Mounting Hardware
o
oo
o W3 – Wing Servo Hardware
o
oo
o W4 – Aileron and Flap Control Horns & Rods
o
oo
o W5 – Fixed Landing Gear Hardware, Main
o
oo
o F1 – Fixed Landing Gear Hardware, Nose
o
oo
o F2 – Rudder Option Wooden Elements
o
oo
o F3 – Hook & Loop Fastener for Battery
o
oo
o F4 – Hinges
o
oo
o T – Wheels & Tires
Thrust Duct & Elevator Hardware
Bag Contents [H2]
}
}}
}
The following are the components packed in the
Thrust Duct & Elevator Hardware Bag [H2]:
Thrust duct & elevator hardware
o
oo
o M1 – EDF Unit Shroud
o
oo
o M2 – Thrust Duct
o
oo
o M3 – Thrust Duct Locator Ring
o
oo
o E1 – Elevator Coupling & Control Rod
§ What’s in the Box
T-45 Goshawk Composite 3
Additional Required Components
}
}}
}
The following is the list of additional
components required to complete and fly your
T-45:
®
®®
® 5 to 6 Channel Computer Radio. Channels
are throttle, ailerons, elevator, nose wheel
steering and flaps with optional rudder and
retractable landing gear.
®
®®
® 5 – 8 Servos (8g – 10g range)
®
®®
® Any necessary servo extensions and Y-
harnesses.
®
®®
® 800W – 1100W motor for EDF Unit
®
®®
® 80A+ Electronic Speed Control (ESC)
®
®®
® Optional Battery Eliminator Circuit (BEC)
®
®®
® Optional Retractable Landing Gear
®
®®
® 4S, 3300mAH – 3700mAH Lithium-Polymer
Battery
®
®®
® Lithium-Polymer Battery Charger
®
®®
® Building supplies and tools (as referenced in
each assembly step)
Available Optional Components
}
}}
}
To complete your T-45, the following
components are recommended by SAPAC as
they are designed to work seamlessly with this
model.
}
}}
}
Motor, SAPAC 2842MB-1 Kv3200.
Dynamically balanced 3200Kv outrunner motor
designed specifically for the SAPAC EDF70
[P/N SAP30731].
Optional, SAPAC 2842MB-1 EDF motor
}
}}
}
Retractable Landing Gear, SAPAC Rz180.
Designed specifically for models in the size and
weight range of the T-45; this gear fits into the
provided mounts without any adjustments
[P/N SAP14000].
Optional, SAPAC Rz180 retractable landing gear
§ Assembly Sequence
4 T-45 Goshawk Composite
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Assembly sequence for SAPAC T-45 Goshawk Composite V2
§ Wing Control Surfaces
T-45 Goshawk Composite 5
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Hinge Wing Control Surfaces
Required Parts
o
oo
o Wing [W]
Required Tools and Adhesives
®
®®
® Thin CA (Cyanoacrylate) Adhesive
}
}}
}
We recommended that you work on one wing
half at a time for all wing related assembly
steps.
}
}}
}
Separate the aileron and the flap from the main
wing. Ensure the hinges are well seated and
centered in their corresponding slots. Replace
the control surfaces and flex the hinges back
and forth several times to loosen them up.
Remove the control surfaces again.
Separate control surfaces
Seat hinges in control surfaces properly
}
}}
}
Starting with the flap (inboard, white control
surface), insert into the wing and line it up to
the desired position. Make sure you have a
small gap between the flap and the wing around
both edges and there is no rubbing or binding.
Using thin CA glue with a thin applicator place a
few drops on each side of the hinges.
By using thin CA you will make sure that the
glue is wicked up the complete surface of the
hinge for a tighter bond. Avoid the use of
accelerator in this joint since you don’t want to
cure the adhesive before it completely coats the
hinges.
Bond hinges using thin CA adhesive
}
}}
}
Once the flap has been hinged repeat the step
with the aileron (outboard, red control surface).
Make sure that there is a small gap around all
edges and no rubbing or binding.
}
}}
}
Finally, repeat the procedure for the opposite
half of the wing. Set the wing aside to ensure
the adhesive has dried thoroughly.
}
}}
}
Once the adhesive is dry flex all the control
surfaces several times and give them a light tug
to make sure they are properly bonded.
§
6 T-45 Goshawk Composite
Cut Servo Slots in Wing
Required Parts
o
oo
o Wing [W]
o
oo
o Servo Covers (4) [W3]
Required Tools and Adhesives
®
®®
® Hobby Knife
®
®®
® Thin CA Adhesive
®
®®
® Hand Drill & Drill Bits
®
®®
® Pen
®
®®
® Flashlight
}
}}
}
Locate the openings for the flap and aileron
servos in the wing.
}
}}
}
Tip, it may be useful to shine a flashlight
through the wing to help locate wing features.
}
}}
}
Remove the covering from the servo mounting
locations using a sharp hobby knife.
Remove covering from servo bays
}
}}
}
Reinforce the cover mounting holes in the wing
with thin CA adhesive to add strength to the
plywood and provide the cover screws a
stronger surface to attach to.
Reinforce screw holes with CA adhesive
}
}}
}
Using a sharp hobby knife, trim away the
covering from the servo arm slots in the servo
covers
Remove covering from servo arm slots
}
}}
}
Using a hand drill with a bit slightly larger in
diameter than the mounting screws, drill the
holes in the corners of all the servo covers
(marked by a laser dot).
Drill out mounting screw holes
}
}}
}
Dry fit the servo covers in the corresponding
locations to ensure they will fit when the servos
are mounted.
Dry fit servo covers
§
T-45 Goshawk Composite 7
Mount Aileron and Flap Servos to
Servo Covers
Required Parts
o
oo
o Wing [W]
o
oo
o Servo Covers (4) [W3]
o
oo
o Servo Mounting Posts (8) [W3]
o
oo
o
Flap Servos (2) + Hardware
o
oo
o
Aileron Servos (2) + Hardware
Required Tools and Adhesives
®
®®
® Thin CA Adhesive
®
®®
® 12 Minute Epoxy Adhesive
®
®®
® Hand Drill & Drill Bits
®
®®
® Screwdriver
}
}}
}
Test fit your servos in the wing to make sure
that you won’t encounter any clearance issues.
}
}}
}
Test all new servos before using them in any
project to ensure there are no production
defects; center your servos and attach the
control arms.
Test and center your servos
}
}}
}
Hold the servo mounting posts against your
servos and drill pilot holes in them using the
servo mounting holes as guides for the location
of the holes. Use a hand drill to avoid splitting
the wood and make sure that you use a bit that
is only slightly smaller in diameter than your
servo mounting screws.
}
}}
}
Tip, when drilling the pilot holes for the servos
in the mounting posts drill then in such a way
that you will be able to mount the servos flush
to the servo covers. This will allow for maximum
clearance for the servos inside the thin wing.
}
}}
}
Once the holes have been drilled reinforce the
posts with a few drops of thin CA adhesive.
Drill pilot holes in servo mounting posts
}
}}
}
Screw the post to the servos using the mounting
hardware supplied with your servos.
}
}}
}
Use Epoxy Adhesive to bond the servo mounting
posts to the servo covers. When bonding the
posts, make sure that the servo arm is located
in the center of the slot and ensure there will be
no clearance issues when mounting the servos
to the wing.
Bond servo mounting posts to servo covers with
Epoxy adhesive
§
8 T-45 Goshawk Composite
Bond and Mount Control Horns
Required Parts
o
oo
o Wing [W]
o
oo
o Aileron Control Horns (4) [W4]
o
oo
o Flap Control Horns (4) [W4]
Required Tools and Adhesives
®
®®
® Hobby Knife
®
®®
® Thin CA Adhesive
®
®®
® 12 Minute Epoxy Adhesive
®
®®
® Hand Drill & Drill Bits
®
®®
® Flashlight
}
}}
}
There are two types of control horns provided,
the straight control horns are for the flaps and
the angled control horns are for the Ailerons.
}
}}
}
Double up the control horns by bonding them
using thin CA adhesive. Make sure that they are
perfectly aligned and soak them generously with
CA to increase their strength. When the
adhesive has dried on the control horns; clean
out the control rod holes using a hand drill with
a bit matching the control rod diameter.
Double-up control horns with CA adhesive
}
}}
}
Find the control horn mounting slots in the
control surfaces and remove the covering using
a sharp hobby knife.
}
}}
}
Bond the control horns to the control surfaces
using Epoxy adhesive.
Mount control horns with Epoxy adhesive
Route Servo Wires
Required Parts
o
oo
o Wing [W]
o
oo
o Aileron Servo Assembles (2) [W3]
o
oo
o Flap Servo Assemblies (2) [W3]
o
oo
o Servo Cover Mounting Screws (8) [W3]
o
oo
o
Any required servo extensions and/or Y-
harnesses.
Required Tools and Adhesives
®
®®
® Hobby Knife
®
®®
® Flashlight
®
®®
® String / Wire / Small Weight / Magnets – for
running wires through the wing.
®
®®
® Screwdriver
}
}}
}
On the top center of the wing, find the two
servo wire exit holes and remove the covering
using a sharp hobby knife.
}
}}
}
Starting with the aileron servos route the servo
wires through the wing to the exit holes in the
top center of the wing.
}
}}
}
By starting with the aileron servo you can run
the wire from the aileron servo opening to the
flap servo opening first and then completing the
run to the center of the wing making the
process easier.
}
}}
}
Tip, we recommend first running a guide string
using a wire hook or some small weights first.
You can then use the guide string to pull the
servo wires through the wing. Another
alternative is to use a vacuum cleaner hose to
pull the guide string through the wing.
Route Servo Wires
§
T-45 Goshawk Composite 9
}
}}
}
Tip, when using servo extensions or Y-harnesses
that will be buried inside the wing it is highly
recommended that you use extension safety
clips (or equivalent alternative) to secure them.
This will prevent servo wires coming undone
during the routing process or worse, during
flight.
}
}}
}
Temporarily mount the servo covers to the
wings using only two screws. Connect all the
servos to your radio system and set them in the
correct position for measuring control rod
length. This should be centered for the aileron
servos and fully retracted for the flap servos.
Make Control Rods and Mount
Servos
Required Parts
o
oo
o Wing [W]
o
oo
o Control Rods (4) [W4]
o
oo
o Servo Cover Mounting Screws (8) [W3]
Required Tools and Adhesives
®
®®
® Ruler
®
®®
® Needle Nose Pliers
®
®®
® Z-Bend Pliers (optional)
®
®®
® Screwdriver
}
}}
}
Starting with the flap servos, manually center
the flaps and measure the distance between the
holes in the servo arm and the control horn. Use
the hole in the servo arm closest to the servo
that still provides the necessary clearance for a
full range of motion.
}
}}
}
Bend a V into the control rod halfway between
the two attachment points. Make a Z-bend at
the opposite end of the control rod making sure
the length matches the measured distance. The
V will allow for minor adjustments of the control
rod length.
}
}}
}
Tip, for even greater ease of adjustability a
different control rod adjustment mechanism
such as threaded clevises or linkage stoppers
can be used.
Completed control rod
}
}}
}
Remove the flap servo cover, thread the control
rod through the control horn and the servo arm
and re-mount the flap servo cover with all four
screws.
§
10 T-45 Goshawk Composite
Completed control rod assembly
}
}}
}
Once you have completed the mounting of the
flaps make sure they are in the completely
retracted position as you will use them as a
reference for centering the ailerons when
creating the aileron control rods.
}
}}
}
Create the aileron control rods in the same way
the flap control rods were created. Insert the
aileron control rods and mount the aileron
servos using all four servo cover screws.
§ Main Gear, Fixed (Optional)
T-45 Goshawk Composite 11
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)
Build Gear Mounts
Required Parts
o
oo
o Main Gear Central Mounts (2) [W5]
o
oo
o Main Gear Side Components (4) [W5]
Required Tools and Adhesives
®
®®
® 12 Minute Epoxy Adhesive
}
}}
}
Make two main gear mounts by bonding the two
side components to the central mount as shown
in the picture below.
Main gear mount assembly
}
}}
}
Use Epoxy adhesive to bond these components
as these bonds will transfer a large amount of
the load from the gear to the wing structure.
}
}}
}
Set aside and make sure the glue is thoroughly
dry before proceeding with the mounting of the
gear.
Cut Slots in Wing for Gear Mounts
Required Parts
o
oo
o Wing [W]
o
oo
o Main Gear Cover (for measuring) [W5]
Required Tools and Adhesives
®
®®
® Hobby Knife
®
®®
® Pen
®
®®
® Flashlight
}
}}
}
Locate the opening for the main gear on the
bottom side of the wings (close to the flap
servos). You will notice the balsa wood sheeting
has been removed over the gear mounts.
}
}}
}
Using a sharp hobby knife cut away the covering
to expose the opening.
}
}}
}
Use one of the main gear covers to mark the
additional area on the wing you will need to trim
away for a proper fit (see picture below).
Main gear slot pre-cut in wing
}
}}
}
Trim away the additional covering and balsa
sheeting to create the necessary access to
mount the gear.
}
}}
}
Make sure that you don’t trim away any of the
internal structure as it must remain in place to
properly bond the gear mounts.
§ Main Gear, Fixed (Optional)
12 T-45 Goshawk Composite
Main gear slot expanded to fit gear mount
}
}}
}
Dry fit the gear mount in the slot you just cut; it
may have to enter slightly angled.
}
}}
}
Remove the gear mounts; you will drill them for
mounting screws in the next step.
Prepare Gear Mount Covers
Required Parts
o
oo
o Main Gear Mount Assemblies (2) [W5]
o
oo
o Main Gear Covers (2) [W5]
o
oo
o Main Gear Struts [W5]
Required Tools and Adhesives
®
®®
® Hobby Knife
®
®®
® Thin CA Adhesive
®
®®
® Hand Drill & Drill Bits
®
®®
® Screwdriver
}
}}
}
Using a hand drill with a bit sized to drill pilot
holes for the main gear cover screws, drill four
holes in each cover at the marked locations
Pilot holes in Gear Cover
}
}}
}
Using a sharp hobby knife cut away the covering
over the strut hole in the Main Gear Covers.
}
}}
}
Temporarily assemble the gear struts and the
gear cover to the gear mount. Use the holes you
just drilled to drill pilot holes into the main gear
mount assemblies.
Drill holes through gear cover into gear mount
(struts omitted for clarity, use them to properly
align gear cover to mount)
§ Main Gear, Fixed (Optional)
T-45 Goshawk Composite 13
}
}}
}
Remove the covers and gear struts. Reinforce
the pilot holes with thin CA adhesive.
}
}}
}
Enlarge the holes in the gear covers to
accommodate the gear cover screws.
}
}}
}
Reassemble and dry fit in the wing, check for
and fix any clearance issues.
Bond Main Gear
Required Parts
o
oo
o Wing [W]
o
oo
o Main Gear Mount Assemblies (2) [W5]
Required Tools and Adhesives
®
®®
® 12 Minute Epoxy Adhesive
}
}}
}
Disassemble the gear mount assemblies, you
will bond the gear mounts into the wing on their
own.
}
}}
}
Bond the completed main gear mounts using
Epoxy adhesive. The following picture shows the
places where Epoxy adhesive needs to be
applied.
Epoxy adhesive locations for main gear mounts
}
}}
}
You may need to temporarily insert the main
gear strut to guide the mount into its final
location.
}
}}
}
Before the Epoxy dries test fit the main gear
covers to make sure that there are no clearance
issues; if necessary make adjustments.
§ Main Gear, Fixed (Optional)
14 T-45 Goshawk Composite
Main Gear Final Assembly
Required Parts
o
oo
o Wing [W]
o
oo
o Main Gear Struts (2) [W5]
o
oo
o Main Gear Covers (2) [W5]
o
oo
o Main Gear Cover Screws(8) [W5]
o
oo
o Main Gear Tires (2) [T]
o
oo
o Main Gear Collets (2) [W5]
Required Tools and Adhesives
®
®®
® Screwdriver
®
®®
® Hex Wrench
®
®®
® Thread Locking Compound
}
}}
}
Mount the main gear struts to the main gear
mounts using the main gear covers and the
main gear cover screws.
Completed main gear assembly
}
}}
}
Mount the tires to the main gear struts using the
supplied collets. Use thread locking compound
so that the wheel collets won’t come off.
§ Main Gear, Retractable (Optional)
T-45 Goshawk Composite 15
M
M
a
a
i
i
n
n
G
G
e
e
a
a
r
r
,
,
R
R
e
e
t
t
r
r
a
a
c
c
t
t
a
a
b
b
l
l
e
e
(
(
O
O
p
p
t
t
i
i
o
o
n
n
a
a
l
l
)
)
Select Retractable Gear Strut
Geometry
Required Parts
o
oo
o Main Gear Retract Template
Required Tools and Adhesives
®
®®
® Scissors
®
®®
® Hobby Knife
}
}}
}
Before cutting the openings in the wing for the
retractable landing gear you need to determine
the landing gear strut geometry you will use.
There are two options for landing gear strut
geometry:
1.- You can use the straight struts provided with
the retractable landing gear unit and bend to
suit.
2.- You can adapt the fixed gear struts to the
retractable landing gear units.
}
}}
}
If you choose to use the straight struts provided
with the retractable landing gear you will use
the following cutout geometry (labeled “For
scale”).
Straight strut wheel location
Straight strut cutout geometry option A
Straight strut cutout geometry option B
}
}}
}
If you choose to use the fixed gear struts
adapted to the retractable landing gear units
you will use the following cutout geometry
(labeled “For wire strut”).
Fixed gear strut wheel location
§ Main Gear, Retractable (Optional)
16 T-45 Goshawk Composite
Fixed gear strut cutout geometry
}
}}
}
Once you have decided which geometry to use
trim the landing gear cutout template to the
desired shape with scissors or a hobby knife to
avoid making any cutting mistakes in the wing.
Cut Openings in Wing for Mounts
and Gear
Required Parts
o
oo
o Wing [W]
o
oo
o Main Gear Retract Template
Required Tools and Adhesives
®
®®
® Hobby Knife
®
®®
® Pen
®
®®
® Flashlight
}
}}
}
Locate the square void under the covering
denoting the location of the landing gear
mounts, trim away the covering using a hobby
knife.
}
}}
}
Lay the template on top of the wing using the
landing gear mount cutout to determine the
correct location. You will be using the template
to locate the score marks laser etched into the
sheeting under the covering.
Use the gear mount to place the template
}
}}
}
Use an erasable pen to trace around the
template defining the location of your cutout.
Mark the location of the cutout
}
}}
}
Cut out the location for the landing gear using a
hobby knife. Once you remove the covering and
balsa sheeting trim the rib section that is
exposed.
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