Goldwing RC 77in CORVUS 35CC & 170E User manual

GoldWing RC
77in CORVUS 35CC & 170E
Giant Scale Aerobatic Aircraft

Specifications
Wing Span: 77"(1960mm)
Length: 74"(1890mm)
Wing Area: 1190sq in(76.8sq dm)
Flying Weight: 11.5-12.7lbs(5200-5700g)
Gas： 30CC-40CC Gas DLE30 DLE35RA
Electric Power：
Hacker A50-14L with 8S 3700-4400mah 18x8 or 19x8 prop
Hacker A60-5S with 8S 4000-5000mAh 20x10 prop
DUSKY XM6360EA 184KV 12S 3300-4400mAh 20x10 prop
Or other 2600-3000Watt electric motor
ESC： 90-120A
Radio: 6+ Channels
Servos: 5-6 servos required 120 oz to 190 oz (8-12kg/cm)
All contents copyright 2016, GoldWing RC
Version 2.0, Nov 2016
Dear Customer,
Thank you for purchasing the new Goldwing RC giant scale aerobatic aircraft. This manual covers the 77in
CORVUS 35CC & 170E aircraft. Goldwing RC proudly presents 77in CORVUS 35CC & 170E, Extreme Series,
which is a premium product line of electric & gas RC airplanes designed for unlimited 3D performance. The
new 77in CORVUS adopts cutting edge aerodynamic features, such as streamlined canopy, aileron
counterbalance, removable side force generators (SFGs) .The 77in CORVUS is also loaded with high-end
accessories including genuine Oracover, CF landing gear, tail wheel assembly and control horns. KUZA brand
CNC Aluminium Backplate Hollowed-out Spinner is included as bonus (limited quantities) for 170E version.
And KUZA new 410cc fuel Tank is included for 35CC version.
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, correct 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". Or if you are in any other country please contact the appropriate body.
By the act of using the final assembled model, the purchaser/operator accepts all resulting
liability.
Goldwing RC 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 us at
[e-mail].

Included Features:
 High quality ball link assemblys
 Larger Aluminium hub rubber wheels diameter than 30CC(30CC is 3in.35CC is 3.25in)
 Improved stainless steel axles
 Includes Side Force Generator’s(SFG)
 Servo lead safety clips
 Extra strength Carbon Fiber control Horns
 One piece air foiled carbon fiber landing gear
 KUZA V2 version Carbon fiber tail wheel assembly
 Two piece removable stabs
 Larger carbon fiber wing tube diameter. Carbon fiber tube for stab.
 Extra covering provided for small repairs and covered in genuine Ultracote / Oracover
Adjustable pushrods for easy fine tuning(Includes wrench)
Pocket Style Scale Hinging
Removable rudder

Canopy extended into cowl
Two Quick stainless steel release canopy latch

Including high quality Velcro Straps
Including KUZA Socket Head Servo Screws
Including KUZA 410ml Gas Tank V2 Version for 35CC version

Including KUZA CNC Aluminum Fuel Dot & Fuel Vent Line Plug for 35CC version

Aluminium Backplate Hollowed-out Electric Spinner included for 170E version (Excellent cooling effect for
brushless motor)
Including POM & ALU motor washers for 170E version

Scheme A White /Yellow/black
Scheme B Red/White /black

Scheme C White/red /black

Items required to complete this Model:
 30-40 cc gas engine with stock or aftermarket
exhaust systems
 Appropriate propeller for your engine
 All the required engine and exhaust mounting
hardware
 Ignition battery and switch
 One quality throttle servo and appropriate
servo arm
 Four high quality metal gear servos of 120 in-
oz
or better for the ailerons and elevators
 One high quality rudder servo of 190 in-oz or
better
 Appropriate servo arms for the above
 Heavy duty servo wire extensions.
Recommends two 24”, three 12” extensions.
Your installation though may vary.
 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
Required 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
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. We recommend 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. Our 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.
Please verify the accessories before commencing assembly:
 Carbon Fiber control Horns (Bag No. KA03CA2) : 8 single horns for ailerons and elevator. 2 dual horns
for rudder.

Sand the area of the horn that will be glued to help adhesion.
 KUZA 3” Aluminium Backplate Hollowed-out Electric Spinner for 170E version (Bag No. KAG0205)

 KUZA new 410cc(14oz) larger volume fuel Tank for 35CC version (including Alloy fuel cap)
 Adjustable pushrods kits: (Bag No. KA04CB4) Two 2.5x60mm Pushrods for aileron. Three 2.5x110mm
Pushrods for elevator & rudder（Pull-push style）
 Pull-pull assembly kits for the rudder. (Bag No. KA03CD)

 Ball link assembly (Bag No. KAG00122): 8 for ailerons and elevators.
 Servo lead safety clips：6 pcs (Bag No. KAG0021)
 3.25in Main wheels：2pcs GW version is Aluminium hub, ARF version is nylon hub

 Including 3.25in Spare replacement wheel tyres for GW version.
 New stainless steel Axle kits (Bag No. KA03CH)
 Carbon fibre tail wheel assembly:GW version is CNC machined metal parts

 Side force generators (mounted with four M3X18 hand bolts and 2 balsa sheets)
 Bolts for landing gear: 4(4x20mm) hexagon bolts and 4(M4) stainless steel self-locking nuts & 4
washers
 Bolts & washers for cowl: 4(3x16mm) Hexagon bolts and 4(10mm) PTFE washers

 Bolts & washers for stab tails: 4(3x12mm) Hexagon bolts and 4(10mm) PTFE washers
 20 POM & ALU washers for 170E motor
 Washers for 35CC gas engine Version: 12(20mm) POM washers

 Wrench set (Bag No. KA03CE)
RUDDER ASSEMBLY
NOTE: There are pictures of different planes in this manual, however, this plane’s wings is assembled the same
way.
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 or soldering iron remove 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．To fit the rudder to the fin, locate the rudder hinge wire and insert. To make it easier to insert twist as it is
inserted.