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WARRANTY

Great Planes

®

Model Manufacturing Co. guarantees this kit to be free from defects in both material and workmanship at the date of

purchase. This warranty does not cover any component parts damaged by use or modification. In no case shall Great Planes’ liability
exceed the original cost of the purchased kit. 
Further, Great Planes reserves the right to change or modify this warranty without notice.

In that Great Planes has no control over the final assembly or material used for final assembly, no liability shall be assumed nor
accepted for any damage resulting from the use by the user of the final user-assembled product. By the act of using the user-assembled
product, the user accepts all resulting liability.

If the buyer is not prepared to accept the liability associated with the use of this product, the buyer is advised to return this
kit immediately in new and unused condition to the place of purchase.

To make a warranty claim send the defective part or item to Hobby Services at the address below:

Hobby Services

3002 N. Apollo Dr. Suite 1

Champaign IL  61822 USA

Include a letter stating your name, return shipping address, as much contact information as possible (daytime telephone number, fax
number, e-mail address), a detailed description of the problem and a photocopy of the purchase receipt. Upon receipt of the package
the problem will be evaluated as quickly as possible.

READ THROUGH THIS MANUAL BEFORE STARTING
CONSTRUCTION. IT CONTAINS IMPORTANT WARNINGS
AND INSTRUCTIONS CONCERNING THE ASSEMBLY
AND USE OF THIS MODEL.

GPMZ0181 for GPMA1274  V1.0

© Copyright 2005

Champaign, Illinois

(217) 398-8970, Ext 5

[email protected]

INSTRUCTION MANUAL

3D EP with FlightFlex

Wingspan: 33.5 in [850mm] 
Wing Area: 369 sq in [24 dm

2

Weight: 16-17 oz [455–480g]
Wing Loading: 6.2–6.6oz/sq ft [19–20 g/dm

2

Length: 36.5 in [925mm] 
Radio: 4-channel w/ 4 micro servos and 25A brushed ESC
Power System: Ball-bearing 370-sized motor, 5:1 reduction gearbox (included)

Summary of Contents for YAK 55

Page 1: ...unused condition to the place of purchase To make a warranty claim send the defective part or item to Hobby Services at the address below Hobby Services 3002 N Apollo Dr Suite 1 Champaign IL 61822 USA...

Page 2: ...obably be making some repairs To minimize damage cut the throttle before impact if possible Take care to build straight and true as you complete the airplane Misaligned parts will hurt the airplane s...

Page 3: ...art numbers are included in parentheses 4 channel radio minimum for maximum 3D performance a computer radio with mixing is recommended 4 sub micro servos 0 3 oz 9g or less each FUTM0042 Micro receiver...

Page 4: ...llimeters multiply inches by 25 4 25 4mm 1 When you see the term test fit in the instructions it means that you should first position the part on the assembly without using any glue then slightly modi...

Page 5: ...ct Support 3002 N Apollo Drive Suite 1 Champaign IL 61822 Telephone 217 398 8970 ext 5 Fax 217 398 7721 E mail airsupport greatplanes com KIT INSPECTION 1 Fuselage 2 Cowl 3 Elevator joiner tube 4 Prop...

Page 6: ...Mail parts orders and payments by personal check to Hobby Services 3002 N Apollo Drive Suite 1 Champaign IL 61822 Be certain to specify the order number exactly as listed in the Replacement Parts Lis...

Page 7: ...l not to flex the fuselage as you make your measurements 4 When you are satisfied with the alignment of the wing glue it in place with hot melt glue 5 Use hot melt glue to secure four hinges in the pr...

Page 8: ...are glued in place 9 Use a hobby knife to clean any excess glue from the hinges 10 Slide the 3mm 1 8 carbon elevator joiner tube into the plastic tubes on the stabilizer Make sure it is centered 11 R...

Page 9: ...utout in the fuselage with hot melt glue Both servos should have their output shafts toward the front of the airplane and the lower servo should project out the left side of the plane while the upper...

Page 10: ...ame procedure 12 Install control horns in the underside of the ailerons using the same procedure 13 If necessary remove the servo arms from all of your servos Find 4 long output arms with the spline s...

Page 11: ...ailerons are in the neutral position This will create a small amount of aileron differential 18 Check that all of the servo arm screws are installed in the servos 1 Pull the ESC output wires forward...

Page 12: ...behind the battery using hook and loop fastener Run the antenna out the back of the zippered fuselage opening Use a pin to puncture two holes 1 2 12mm apart in the vertical fin Stick the receiver ante...

Page 13: ...Once you have determined the amount of weight required it can be permanently attached IMPORTANT If you found it necessary to add any weight recheck the C G after the weight has been permanently insta...

Page 14: ...your face and body as well as all spectators away from the plane of rotation of the propeller whenever the battery is connected Keep these items away from the prop loose clothing shirt sleeves ties s...

Page 15: ...your name address AMA number and telephone number on or inside your model 11 If you wish to photograph your model do so before your first flight 12 Range check your radio when you get to the flying fi...

Page 16: ...o maintain your glide path and airspeed If you are going to overshoot smoothly advance the throttle always ready on the right rudder to counteract torque and climb out to make another attempt When you...

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