arf MX2 50CC V2 User manual

ARF MODEL
MX2 50CC V2
Instruction Manual

Dear Customer,
Thanks for purchasing this newly designed MX2 50CC V2 aerobatic RC airplane. The weight is
approximately 17Lbs. 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 MX2 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. Larger carbon fiber wing tube diameter than V1 Previous versions.
10. 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:88-1/2" (2250mm)
LENGTH: 85-3/4"(2180mm)
WING AREA:1488sq in(96sq dm)
FLYING WEIGHT:16.5-17.8lbs(7500-8100g)
GAS: 50CC-70CC Gas DLE55 DLE61 DA50 DA60 EME60 GP61
Electric Power：
Hacker Q80-8M with 12S 5000mah 24x10 prop
KUZA EXM 8015 with 12S 5000mah 24x10 prop
Or other 4000Watt electric motor
ESC:160A
RADIO:4+CH/5-6S
FEATURES INCLUDED
Newly designed structure
Two pieces removable wings & stabs
PVC canopy
 Larger aileron and elevator design for excellent 3D aerobatic flying
 Removable rudder

 Includes Side Force Generator’s(SFG)
 CNC anodized aluminum Canopy Bolts
 Full length Tuned pipe tunnel designed into fuselage

 Anodized aluminum Long servo arms included
 Adjustable pushrods for easy fine tuning(Includes wrench)
 Servo extension safety connector clips
 High performance cap head bolts

 Flat nylon hinges for increased strength
 Honeycomb board carton packing for safer transportation
 High quality 3mm ball links assembly
 New dual fiberglass horn assembly

 New Carbon fiber tail wheel assembly
 High-quality durable rubber wheels
 Improved new Axles (the material of the Axle is stainless steel )

 Two options for landing gear: Anodized 6061 Aluminum or Carbon fiber
Carbon fiber landing gear
 Increased diameter carbon fiber wing tube than previous V1 version.
 Carbon fiber stab tube

Scheme A White/black/green

Scheme C Red/white/black

Items Required to Complete This Model:
 50-70CC Gas engine and exhaust
 Appropriate propeller for your Motor
 All required engine and exhaust mounting
hardware
 Ignition battery and switch
 One quality throttle servo and appropriate
servo arm
 4Pcs high quality metal gear servos or better
for the ailerons and elevators
 Appropriate servo arms for the above
 Servo wire extensions. Recommends two 24”,
One 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 locate the accessories before assembly:
New Expoxy horn kits (Bag No. KA05CA): 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(Bag No. KA05CBG3) Four 3x60mm pushrods for ailerons. One 3x165mm pushrods rudder
（Pull-push style）
Pull-pull assembly kits for the rudder. (Bag No. KA05CD)
Ball link assemblies (Bag No. KAG00131): 8 for ailerons and elevators.

Alu long arm kits (Bag No. KA05CC): 4 single arms for ailerons and elevators. 1 dual arm for the rudder.
6 Servo extension safety connector clips (Bag No. KAG0021)
Main rubber wheels (Bag No. KAG014B)：2PCS
New stainless steel Axle kits (Bag No. KA05CH): 2PCS

New Carbon fiber tail wheel assembly. (Bag No. KAG0104)
Side force generators (4 x 3x20mm hex bolts & 4 x washers & 2 balsa sheet)
Bolts for landing gear: 4(4x20mm) Hexagon bolts & 4 washers& 4mm stainless steel Self-locking nuts
Bolts & washers for cowl: 4(3x16mm) Hexagon bolts & 4 washers

5 allen keys(Bag No. KA05CE)
Wing Assembly
NOTE: There are pictures of different planes in this manual, however, this plane’s wings is assembled the
same way.
1.Aileron push rod linkage set. 3x60mm Pushrods for aileron.
2.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.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. 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.
9. 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.
10. 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.
11. 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.
Use the wrench to adjust the pushrod to the appropriate length.
Elevator Assembly
NOTE: There are pictures of different planes in this manual, however, this plane’s elevator is assembled the
same way.
1. Push rod linkage set for elevator. 3x60mm Pushrods for elevator.
2. Find the slots for the control arms in the elevators and remove the covering where the horns are
inserted and the area for the plate.

3. Sand the area on the horn that will be glued inside the elevator.
4. Using plenty of 30 minute epoxy fit the horn and plate into place. Use a ball joint and bolt to hold
the horn in place while drying.
REPEAT FOR THE OTHER SIDE
5. Place long arms onto the servo’s you are planning to use for the elevators.

6. Place the servo into the elevator and screw in place. Remember to harden the holes with thin Cyano.
7. Place the servo arm back onto the servo, remembering to centre.
Use nutlock on the servo arm screw.
8. Fit the pushrod in place remembering one end is reverse threaded. Set it so the arm is centered and
the elevator is flat. Choose the holes depending on how much deflection you require.