Goldwing RC Corvus Racer 540 120CC User manual

GoldWing RC
Corvus Racer 540 120CC
Giant Scale Aerobatic Aircraft

Specifications
Scale: 36%
Wing Span: 108"(2740mm)
Length: 106"(2690mm)
Wing Area: 2111sq in(136.2sq dm)
Flying Weight: 26.5-28lbs(12-12.7kg)
Engine：100cc-130cc gas DLE111, DLE120, DA120,
3w110
Radio: 6+ Channels
Servos: 7 to 9 servos required 240 oz to 500 oz (15-
30kg/cm)
All contents copyright 2015, GoldWing RC
Version 2.0, Nov 2015
Dear Customer,
The latest Goldwing RC Corvus 120cc aircraft was designed in
conjunction with EG AIRCRAFT. EG Aircraft will exclusively sell in the
USA while Goldwing RC will be available for the rest of the world.
Specifications of the aircraft are identical between the brands.
The structure of the new 120CC aircraft has been further optimized,
retaining
the current features of being built super light for 3D aerobatics yet are
even
stronger. Designed for the latest generation of high output engines
like the
DA-120 and 3W110 engines.
Thank you for purchasing the new Goldwing RC giant scale aerobatic
aircraft. This manual covers the CORVUS aircraft. The CORVUS is designed

for the popular 100-130 cc engines and weighs approximately 12 to
12.7Kg. Perfect for IMAC or Freestyle, this new giant offers everything you
want in a giant scale aerobat including great looks! Covered in genuine
Ultracote, this ARF comes with premium hardware, C.F landing gear,
carbon fiber wing and dual stab tubes, carbon fiber reinforced wing and
fuselage spars, carbon fiber horns and pre-hinged elevators and ailerons.
The Corvus 120CC is also loaded with new Carbon fibre tail wheel assembly with
CNC machined metal parts, including the aluminium tail wheel hub. And KUZA new
1000cc gas Tank with Alloy cap is included. We hope you will enjoy your new
giant scale aircraft as much as we have.
A QUICK WORD ABOUT SAFETY AND RADIO CONTROL FLYING MODELS
With radio control aircraft, like any hobby or sport, there are certain
risks. The operator of these models is responsible for these risks. If
misused or abused, you may cause serious bodily injury and/or damage to
property. With this in mind, you will want to be certain that you build your
model carefully and correctly. If you are not an experienced flier, have
your work checked and ask for help in learning to fly safely. This model
aircraft is not a toy and must be operated and flown in a safe manner at all
times. Always perform a pre-flight check of the model including all
control surfaces, proper function of the radio gear, structure, radio range,
and any other area relating to the safe operation of this aircraft.
Models are not insurable but operators are. You can obtain coverage
through membership in the Academy of Model Aeronautics (AMA). For an

AMA information package call 1-800-435-9262, ext. 292 or visit the AMA
website at "www.modelaircraft.org".
By the act of using the final assembled model, the purchaser/operator
accepts all resulting liability.

GoldWing WARRANTY AND RETURN POLICY
GoldWing RC guarantees this product to be free from defects in both
material and workmanship at the date of purchase. This does not cover
any parts damaged by use, misuse or modification. In no case shall
liability exceed the original cost of this kit. Because GoldWing RC has no
control over the final assembly or equipment/components used in the final
assembly, no liability shall be assumed for any damage resulting from the
use of this model by the user. By the act of using the final assembled
model, the user accepts all resulting liability. If you should find any
missing or damaged parts, or have any questions about this product,
please contact within 30 days of the purchase in order to be covered by
our warranty. You may contact at [e-mail].
Included Features:
Larger aileron and elevator design. Up to 60 degrees of throw on all control
surfaces for excellent 3D aerobatic flying
High quality ball link assemblie
Improved the stainless steel axles
Servo lead safety clips
High performance cap head bolts
Honeycomb board carton packing for safer transportation
Adjustable pushrods for easy fine tuning(Includes wrench)
Aluminium hub rubber wheels

Replacement wheel tyres, using the existing wheel hubs.
Flat nylon hinges for inproved flying strength
Pre-hinged control surfaces

Extra covering provided for small repairs, genuine Ultracote / Oracover
Removable rudder
Side force generators

CNC ALU canopy bolts
X basla batten structure ensures high strength of fuselage
Canopy hatch pins are made of nylon rods for better resistance aganist vibratio
n

The Corvus is designed to directly accommodate KUZA® rudder servo tray
KUZA new 1000cc(34oz) gas Tank with alloy tank cap included.

Carbon Fiber accessories version：
Extra strength carbon fiber control horns

One piece airfoiled carbon fiber landing gear
Carbon fiber tail wheel assembly with CNC machined metal parts, including the
aluminium tail wheel hub.

Increased diameter carbon fiber wing tube over previous versions
Two pcs carbon fiber tubes for stab
Special 4in Painted carbon fiber spinner for Corvus

Scheme A : White/yellow/black
Scheme B : Red /white/ black

Scheme C White /red/ /black

Items Required to Complete This Model:
100-130 cc gas engine with
stock or aftermarket exhaust
systems
Appropriate propeller for your
engine
All required engine and exhaust
mounting hardware
Ignition battery and switch
One quality throttle servo and
appropriate servo arm
Six high quality metal gear
servos of 180 in-oz or better
for the ailerons and elevators
One or two high quality rudder
servos totaling at least 330 in-
oz or better
Appropriate servo arms for the
above
Heavy duty servo wire
extensions. recommends two
42”, two 18”, three 12”, two Y-
harnesses, two 6”, two 6”
Two heavy duty switches with
charging jacks for the Rx
Two high quality Rx batteries
of significant capacity to
power your choice of servos.
One Receiver of your choice
Shop Supplies/Tools
Covering Iron and heat gun
Assortment normal hobby
tools such as screwdrivers,
hobby knife, drill and drill bits,
pliers, etc.
Thick and Thin CA adhesives
30 minute Epoxy
Isopropyl alcohol
Ruler or tape measure
Blue thread-lock or equivalent

extensions. Your installation
though may vary.
Note: As with all kits, it’s a good idea to read all the instructions
and study the parts before you begin construction. Handle the
parts of this kit with care so you do not damage any of the
structure or covering. Inspect all the parts for any shipping
damage and report any issues to as soon as you can. Make sure
you have a flat and sturdy workbench and follow all safety advice
for the tools and adhesives you plan to use.
AIRCRAFT COVERING
1. With all ARFs, varying temperatures and storage delays can cause
covering material to loosen over time and transportation. recommends
lightly going over all the covering with a covering iron set at medium
temperatures. Be sure to use a soft cover over your iron so you do not
scratch the covering surface. Be sure you go over all seams and edges
of the covering to assure it is secure to the airframe and other covering.
Be careful not to apply too much heat or you may cause bubbles or
damage to the covering. A heat gun may also be used along with a soft
cotton cloth to shrink and adhere the covering. Again, be extremely
careful when using a heat gun.
2. Be sure to seal any exposed wood with a thin coating of epoxy to
prevent engine oil from soaking in. This is especially important around
the engine compartment and servo openings with exposed areas.
3. Some modelers prefer to seal the hinge gaps using strips of appropriate
covering or clear trim tape. We have found this to be helpful with
models intended for higher speed flight or models with unusually large
hinge gaps. aircraft utilize a very tight double beveled hinge line and
do not normally require this step. Sealing the hinge gaps is therefore
left as an option for the modeler.

RUDDER INSTALLATION
1. It is much easier to install the twin control horns before installing the
rudder. Locate the Carbon Fiber rudder control horns, ball links, and
associated bolts and nylon-insert lock nuts. Use some fine sandpaper
to roughen up the center areas of the two control horns so that the glue
adheres better. Using a sharp hobby knife cut the covering away from
the slots in the rudder and trial fit the two control horns.
2. Mix up some 30 minute epoxy and coat the inside of the slots and the
center of the control horns. Hint: a scrap piece of 1/16” ply, tooth pick,
or old hobby blade can be used to coat the inside of the rudder slots.
Slide the control horns in place and make sure they are centered
perfectly by using a ruler to measure between the pivot holes and the
hinge line. Wipe any excess glue off with isopropyl alcohol and paper
towels. Install the ball links, bolts and nuts into the holes to help assure
alignment of both control horns while the glue cures. Set aside until
cured. NOTE: There are pictures of different planes in this manual,
however, this plane’s rudder is assembled the same way.

3. The slots for the supplied flat hinges are pre cut. Locate the flat hinges
and dry fit the hinges and rudder into place and test the operation.
The hinges should seat fully into the slots so that the hinge line gap is
minimal while still allowing full rudder deflection.
4. Before gluing the hinges in you must first clean the hinges of any mold
release agent using isopropyl alcohol. also recommends scuffing up
the plastic with light sandpaper for maximum glue adhesion.
5. Mix up some 30 minute epoxy and using a toothpick or small wooden
dowel coat the inside of each hinge slot with epoxy. Also put a thin
layer of epoxy on one side of the flat hinges. Install this end into the
slots of the rudder and make sure each hinge is properly aligned at
exactly 90 degrees to the hinge line.
6. Now coat the other end of the flat hinges with epoxy and install the
rudder into the trailing edge of the vertical stabilizer. Again, make sure
the hinges remain in proper alignment. Using paper towels and some
isopropyl alcohol clean off any excess epoxy from the hinges and
surrounding areas.
7. Make sure the rudder is fully seated so that the hinge gap is minimal
while still allowing full deflection of the rudder. When satisfied, use
some masking tape to hold the rudder in place along the bottom and
counterbalance. After the epoxy has cured, remove the masking tape
and check for proper operation. If the hinges are dry some light oil
carefully placed on each hinge will help greatly.

8. We recommend using KUZA 4” aluminium CNC servo arm (sold
separately) for rudder control.
9. We recommend using KUZA® rudder servo tray (available separately) for
better rudder performance.

10 ．This CORVUS is designed to directly accommodate KUZA® rudder
servo tray, and so will be all other pending Goldwing airplanes that are
120cc or greater.
11．You will need to provide 3X42 mm push rods (4 Pcs) and ball links (8
Pcs), depending on the servo of your choice, 2Pcs KUZA 3.25” aluminum
CNC servo arm may also be needed.
12. Assembling rudder servo tray.