ARF MODEL Corvus Racer540 30CC V2 User manual

ARF MODEL
Corvus Racer540 30CC V2
Instruction Manual

Dear Customer,
Thanks for purchasing this newly designed Corvus Racer540 30CC V2 aerobatic RC airplane. The weight is
approximately 10Lbs. It’s good for IMAC and free style flying. It’s a beautiful plane with amazing flight
performance. It’s covered with genuine monocote, and comes with good quality accessories, including
carbon fiber wing tube, Anodized 6061 aluminum landing gear or carbon fiber as an option. We hope you
enjoy this plane.
The new V2 version of Corvus has the following improvements from previous versions:
1.Control services is larger than V1 version. Up to 50 degrees of throw on all control surfaces. Best for more
vibrant aerobatic flight.
2.Improved wheels with more durable materials, and filled with rubber.
3.Using high quality cap head screws.
4.Improved ball link assembly.
5. Improved new Axle.the material of Axle is stainless steel .
6. Improved new Dual Fiberglass horn assembly
7. Flat nylon hinges for better flying strength
8. Include Side Force Generator’s(SFG)
9. Air exit opeing behind the rudder servo for electric set-ups.
10. Larger carbon fiber wing tube diameter than V1 Previous versions.
11. This V2 new design with a longer fuselage moment arm aids the tracking of the model, giving it rock
sold precision flight. Making it perfect for modern day flight schedules for IMAC and Freestyle
competitions.
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.
ARF MODELS WARRANTY AND RETURN POLICY
We guarantee that the plane is in perfect condition at purchase. The warranty will be voided after
modifications and usages. If you have any questions or find any issues, please contact the distributors in
your area.

SPECIFICATIONS
WING SPAN: 72"(1830mm)
LENGTH: 70"(1780mm)
WING AREA: 1017sq in(65.6sq dm)
FLYING WEIGHT: 9.7-11lbs(4400-5000g)
Glow: .91-1.20（2C） 1.10-1.40（4C）
Gas: 26CC-38CC Gas DLE30 DLE35
Electric Power：
KUZA EXM 5420 185KV with 12S 3300-4000mAh 18x10 prop
KUZA EXM 5420 280KV with 8S 3700-4400mAh 18x10 prop
DUSKY XM6350EA-12 with 8S 3700-4400mAh 18x10 prop
Or other 1800-2000Watt electric motor
ESC：80-100A
RADIO:4CH/5-6S
FEATURES INCLUDED
Newly designed structure
Two pieces removable wings
PVC canopy
 Larger aileron and elevator design for excellent 3D aerobatic flying

 Air exit opeing behind the rudder servo for electric set-ups
 Includes Side Force Generator’s(SFG)
 Canopy extended into cowl

 Quick release canopy latch
 Full length Tuned pipe tunnel designed into fuselage
 Anodized aluminum Long servo arms included

 Servo extension safety connector clips
 High performance cap head screws
 Flat nylon hinges for better flying strength

 High quality 2.5mm ball links assembly
 New dual fiberglass horn assembly
 New Carbon fiber tail wheel assembly

 High-quality durable rubber wheels
 Improved new Axle (the material of Axle is stainless steel )
 Two options for landing gear: Anodized 6061 Aluminum or Carbon fiber
Carbon fiber landing gear Anodized 6061 Aluminum landing gear

 Larger carbon fiber wing tube diameter than V1 Previous versions.
Scheme A White/Yellow/Black

Scheme B Red /White/ Black

Items Required to Complete This Model:
 26-38CC Gas engine
 Appropriate propeller for your Motor
 All required engine and exhaust mounting hardware
 Ignition battery and switch
 One quality throttle servo and appropriate servo arm
 3-5Pcs high quality metal gear servos or better for
the ailerons and elevators
 Appropriate servo arms for the above
 Servo wire extensions. Recommends three 18”, two
12” extensions.
 Two 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
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.
Please verify the accessories before assemble:
New Fiber glass servo horns: 8 single horns for ailerons and elevators. 2 dual horns for rudder.
There is a layer of protection film on the horns. Please remove the film as shown following picture.
Make sure to sand the horns so the surface is rough to glue correctly.

Pushrods: Two 2.5x60mm Pushrods for aileron. Three 2.5x120mm Pushrods for elevator & rudder
（Pull-push style）
Pull-pull setup for the rudder.
Ball links: 8 for aileron and elevator.

Servo arms: 4 single arms for aileron and elevator. 1 dual arm for rudder.
5 Servo extension safety connector clips
Main rubber wheels：2PCS

New stainless steel Axle kits: 2PCS
New Carbon fiber tail wheel assembly.
Side force generators (Four 3x14mm Hexagon bolts & 4 Washers)
Motor mount for brushless motor

Engine mount for nitro or gas engine
Screews for landing gear: 4(4x20mm) Hexagon bolts & 4mm stainless steel Self-locking nuts & washers
Screws for cowl: 4(3x14mm) Hexagon bolts & 4 washers

4 allen key wrenches
Wing 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 wing. Locate the fiberglass
aileron 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 aileron 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.
3. The slots for the supplied hinges are pre cut. Locate the hinges and dry fit the hinges and aileron 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 aileron deflection.
4. Before gluing the hinges in you must first clean the hinges of any mold release agent using isopropyl
alcohol. We also recommend 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 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 hinges with epoxy and install the aileron into the trailing edge of the wing.
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 aileron is fully seated so that the hinge gap is minimal while still allowing full deflection of
the aileron. When satisfied, use some masking tape to hold the aileron 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 stiff some light oil carefully placed on each hinge will help greatly.
8. Cut the covering from the aileron servo openings from corner to corner and iron down inside the openings.
Connect servo wire extensions to your servos and secure the connections with the supplied clips, your own
clips, or tape. Feed the servo wires into the wing and out the root. Install the servos and screw firmly in
place.
9. Use your radio to set the centers of each servo and then assemble and adjust the length of each control rod.
The servo arm should be as close to perpendicular to the control rod as possible while the aileron is at
neutral. Double check all screws, bolts and nuts to assure proper installation and operation without
binding.Once satisfied, permanently attach the ball link to the servo arm with the supplied screw and nut.
10. Check the final radio operation of the ailerons and make sure there is no binding or servo fighting of
each other. Also check to make sure all linkage bolts and nuts are secure.

11. We recommend using KUZA 1.5” aluminium CNC servo arm (sold separately) for wing control.
Elevator Assembly
NOTE: Some pictures are of different planes in this manual, however, this plane’s elevator is assembled the
same way.
1.Cut the covering over the hole for elevator on the fuselage. Glue the elevator to the fuselage. Making sure
it’s centered.

2. Use two servos for the elevators.
3，Glue the hinge for the elevator the same way as the main wings.