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Thank you for purchasing the Model Tech Apex 3D EP ARF.  We're confident that the quality of your new airplane meets and 
even exceeds your expectations.  Before completing the final assembly of your new airplane, please carefully read through 
these assembly instructions in their entirety.  Doing so will ensure your success the first time around!

These assembly instructions are designed to guide you through the entire assembly process of your new airplane in the least amount 
of time possible.  Along the way you'll learn how to properly assemble your new airplane and also learn tips that will help you in the 
future.  We have listed some of our recommendations below.  Please read through them before beginning assembly.

  Please read through each step before beginning assembly.  You 

should find the layout very complete and straightforward.  Our goal 

is to guide you through assembly without any of the headaches 
and hassles that you might expect.

  There  are  check  boxes  next  to  each  procedure.    After  you 

complete a procedure, check off the box.  This will help prevent 
you from losing your place.

  Cover your work table with brown paper or a soft cloth, both to 

protect the table and to protect the parts.

  Keep a couple of small bowls or jars handy to put the small parts 

in after you open the accessory bags.

  We're all excited to get a new airplane in the air, but take your 

time.  This will ensure you build a straight, strong and great flying 

airplane.

  If you come across this symbol 

,  it means that this is an 

important point or an assembly hint.

This R/C airplane is not a toy! If misused or abused, it can cause serious bodily injury and/or damage to property.  Fly only in open 

areas and preferably at a dedicated R/C flying site.  We suggest having a qualified instructor carefully inspect your airplane before 
its first flight.  Please carefully read and follow all instructions included with this airplane, your radio control system and any other 

components purchased separately.

Model Tech guarantees this kit to be free from defects in both material and workmanship at the date of purchase.  This does not cover any component 

parts damaged by use, misuse or modification.  

in no case shall Model Tech's liability exceed the original cost of the purchased kit.

In that Model Tech has no control over the final assembly or material used for final assembly, no liability shall be assumed for any damage resulting 
from the use by the user of the final user-assembled product.  By the act of using the final user-assembled product, the user accepts all 

resulting liability.

INTRODUCTION .....................................................................................2

SAFETY WARNING ................................................................................2

OUR GUARANTEE .................................................................................2

CUSTOMER SERVICE INFORMATION .................................................3

OUR RECOMMENDATIONS ..................................................................3

LITHIUM POLYMER BATTERY WARNINGS - PLEASE READ ..............4

TOOLS AND SUPPLIES REQUIRED .....................................................5

KIT CONTENTS ......................................................................................5

A NOTE ABOUT COVERING MATERIAL ...............................................6

TIPS FROM THE PROS ..........................................................................6

MOTOR INSTALLATION .........................................................................7

WING INSTALLATION .............................................................................8

STABILIZER INSTALLATION ..................................................................9

ELEVATOR AND RUDDER CONTROL SYSTEMS INSTALLATION ........12

AILERON CONTROL SYSTEMS INSTALLATION ................................15

LANDING GEAR INSTALLATION .........................................................16

FINAL ASSEMBLY .................................................................................18

BALANCE POINT AND CONTROL THROWS ......................................19

PREFLIGHT CHECK AND SAFETY .....................................................20

REPLACEMENT PARTS LIST ..............................................................20

PRODUCT EVALUATION SHEET .........................................................23

TABLE Of CONTENTs

iNTrODuCTiON

sAfETY WArNiNG

Our GuArANTEE

Summary of Contents for Apex 3D EP ARF

Page 1: ...our Color Decal Sheet Dual Aileron Servos for Precise Control and Mixing Capabilities Includes High Quality Hardware Fast and Easy Assembly Over 60 High Resolution Digital Photos and Drawings All Cont...

Page 2: ...s an important point or an assembly hint This R C airplane is not a toy If misused or abused it can cause serious bodily injury and or damage to property Fly only in open areas and preferably at a ded...

Page 3: ...ak Quattro LiPO DC Charger l Maxx Products 1 8 Propeller Adapter You will need to use a 4 or more channel transmitter with a 4 or more channel standard range mini receiver Ideally the transmitter shou...

Page 4: ...NOT leave in direct sunlight or in a hot car or storage area Do NOT get wet or expose to moisture Do NOT short circuit the battery ONLY discharge and charge the battery outdoors or in a firesafe cont...

Page 5: ...e you begin assembly and it will also help you become familiar with each part If you find any parts missing or damaged please contact your local distributor using the Customer Service Information on p...

Page 6: ...the glue to stick better Also never glue directly to the covering material Always remove the covering material from the gluing surfaces prior to gluing the parts together When cutting away the coverin...

Page 7: ...4 6mm in front of the front of the fuselage q While gently holding the motor in position adjust the placement of the two motor mounting straps so they are centered but not covering any of the motor s...

Page 8: ...draw an outline around the wing hold down doubler on the wing Step 1B INSTALLING the motor Brushless outrunner direct drive Line up the mounting holes in your motor with the precut slots in the plywo...

Page 9: ...ways make sure to remove the covering material from the gluing surfaces before gluing the parts together Step 2 installing the WING HOLD DOWN dowels Glue one wing hold down dowel into the two holes at...

Page 10: ...zontal Stabilizer with Elevator 1 Vertical Stabilizer with Rudder q 220 Grit Sandpaper with Sanding Block q Masking Tape q Paper Towels q Rubbing Alcohol q Epoxy Mixing Sticks q Epoxy Mixing Cups Cut...

Page 11: ...ing IMPORTANT If the stabilizer is not parallel to the wing remove it and use 220 grit sandpaper with a sanding block to sand down the higher side of the stabilizer mounting slot until you are satisfi...

Page 12: ...s amount of 5 minute epoxy to the gluing surfaces of both the stabilizer and the fuselage then push the stabilizer into place and realign it double checking all of your measurements once more before t...

Page 13: ...Screwdriver q Needle Nose Pliers Modeling Knife q Electric or Hand Drill 1 5 1 2 140mm Threaded Wire with Z Bend q 1 4 1 8 105mm Threaded Wire with Z Bend 2 Nylon Control Horns with Backplates 2 Nylon...

Page 14: ...servo making sure that the servo horn is centered and pointing out toward the side of the fuselage Position and install one control horn onto the left side of the rudder using the same techniques that...

Page 15: ...With both the rudder servo horn and the rudder centered thread one nylon clevis onto the pushrod wire and snap the clevis into the outermost hole in the control horn Double check that both servo horn...

Page 16: ...er or lower than the other one Position and install one control horn onto the bottom of one aileron using the same techniques that you used to install both the elevator and the rudder control horns Wh...

Page 17: ...ding gear wires in place Test fit and glue the tail skid into place using a generous amount of glue Make sure that the tail skid faces toward the back of the fuselage and that it s lined up straight w...

Page 18: ...n mount your receiver to the fuselage floor using a piece of double sided foam tape not included Plug a Y Harness into the aileron slot in your receiver so that you can connect the aileron servo leads...

Page 19: ...RTANT Make sure to tighten the propeller nut firmly Ailerons 5 8 16mm Up and Down Elevator 1 2 13mm Up and Down Rudder 1 2 13mm Right and Left Test Flying and Sport Flying 3D Flying Balance Point The...

Page 20: ...heck that they are on the low rate setting for your first few flights Check to ensure that all of the control surfaces are moving the proper amount in both low and high rate settings Check the receive...

Page 21: ...prowess beyond mere loops and rolls The Profile Sukhoi will hover knife edge perform blenders and all the advanced 3D aerobatics The ModelTech engineers have designed the Sukhoi 31 to handle superbly...

Page 22: ...Page 22 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 23: ...Fit Hardware Supplied Price Other 9 What did you like least about this kit Assembly Manual Parts Fit Hardware Supplied Price Other 10 Are you satisfied with the finished model If no please explain Ye...

Page 24: ...l Hobby Distributors Attn Global Services 18480 Bandilier Circle Fountain Valley CA 92728 8610 Post Office will not deliver without proper postage ______________________________ ______________________...

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