GREAT PLANES YAK-55M Yakovlev Instruction Manual
GREAT PLANES YAK-55M Yakovlev Instruction Manual

GREAT PLANES YAK-55M Yakovlev Instruction Manual

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INSTRUCTION MANUAL
INSTRUCTION MANUAL
NSTRUCTION MANUAL
SPECIFICATIONS
SPECIFICATIONS
Wingspan:
Wingspan:
51 in
51 in
[1295mm]
[1295mm]
508 in
508 in
Wing Area:
Wing Area:
[32.8 dm
[32.8 dm
WARRANTY
WARRANTY
Great Planes
Great Planes
®
®
®
Model Manufacturing Co. guarantees this kit to
Model Manufacturing Co.
be free from defects in both material and workmanship at the
be free from defects in both material and workmanship at the
date of purchase. This warranty does not cover any component
date of purchase. This warranty does not cover any component
parts damaged by use or modification. In no case shall Great
parts damaged by use or modification. In no case shall Great
Planes' liability exceed the original cost of the purchased kit.
Planes' liability exceed the original cost of the purchased kit.
Further, Great Planes reserves the right to change or modify this
Further, Great Planes reserves the right to change or modify this
warranty without notice.
warranty without notice.
In that Great Planes has no control over the final assembly or
In that Great Planes has no control over the final assembly or
material used for final assembly, no liability shall be assumed nor
material used for final assembly, no liability shall be assumed nor
accepted for any damage resulting from the use by the user of
accepted for any damage resulting from the use by the user of
the final user-assembled product. By the act of using the
the final user-assembled product. By the act of using the
user-assembled product, the user accepts all resulting liability.
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
READ THROUGH THIS MANUAL BEFORE STARTING CONSTRUCTION. IT CONTAINS IMPORTANT
INSTRUCTIONS AND WARNINGS CONCERNING THE ASSEMBLY AND USE OF THIS MODEL.
© 2010 Hobbico
®
, Inc.
Weight:
Weight:
3.5– 3.75 lb
3.5– 3.75 lb
[1590– 1700 g]
[1590– 1700 g]
Wing
Wing
2
2
16– 17 oz/ft
16– 17 oz/ft
2
2
Loading:
Loading:
]
]
[49– 52 g /dm
[49– 52 g /dm
guarantees this kit to
Length:
Length:
Radio:
Radio:
2
2
Motor/ESC/Prop:
Motor/ESC/Prop:
2
2
]
]
this kit immediately in new and unused condition to the
this kit immediately in new and unused condition to the
place of purchase.
place of purchase.
To make a warranty claim send the defective part or item to
To make a warranty claim send the defective part or item to
Hobby Services at the address below:
Hobby Services at the address below:
Hobby Services
Hobby Services
3002 N. Apollo Dr. Suite 1
3002 N. Apollo Dr. Suite 1
Champaign IL 61822 USA
Champaign IL 61822 USA
Include a letter stating your name, return shipping address, as
Include a letter stating your name, return shipping address, as
much contact information as possible (daytime telephone
much contact information as possible (daytime telephone
number, fax number, e-mail address), a detailed description of
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.
(217) 398-8970, Ext 5
airsupport@greatplanes.com
47 in
47 in
[1195mm]
[1195mm]
4-Channel minimum or
4-Channel minimum or
5-Channel with mixing
5-Channel with mixing
(for separate ailerons)
(for separate ailerons)
RimFire .32 (42-50-800)
RimFire .32 (42-50-800)
Champaign, Illinois
GPMA1186 Mnl

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Summary of Contents for GREAT PLANES YAK-55M Yakovlev

  • Page 1 Champaign IL 61822 USA Champaign IL 61822 USA In that Great Planes has no control over the final assembly or In that Great Planes has no control over the final assembly or material used for final assembly, no liability shall be assumed nor...
  • Page 2: Table Of Contents

    Recommended Batteries ..... . .3 the Yak-55M EP visit the Great Planes web site at www. greatplanes.com. Open the “Airplanes” link, then select the Recommended Charger.
  • Page 3: Decisions You Must Make

    SS-45A Brushless ESC. model has remained structurally sound. Be sure to check ❏ clevises or other connectors often and replace them if they Great Planes RimFire .32 Brushless Outrunner Motor show any signs of wear or fatigue. [GPMG4700] ❏...
  • Page 4: Additional Items Required

    Product Support. When reporting defective or missing parts, use the part names exactly as they are written in the Kit Contents list. Great Planes Product 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...
  • Page 5: Ordering Replacement Parts

    The fastest, most economical service can be GPMA4102 Horizontal Stab provided by your hobby dealer or mail-order company. GPMA4103 Rudder To locate a hobby dealer, visit the Great Planes web site GPMA4105 Canopy/Hatch at www.greatplanes.com. Choose “Where to Buy” at the GPMA4106 Cowl bottom of the menu on the left side of the page.
  • Page 6: Preparations

    PREPARATIONS ❏ 1. If you have not done so already, remove the major parts of the kit from the box and inspect for damage. If any parts are damaged or missing, contact Product Support at the address or telephone number listed in the "Kit Inspection" section on page 4.
  • Page 7: Assemble The Fuselage

    rest on a hardwood block in the aileron. Mark the location of the mounting holes onto the aileron. Drill a 1/16" [3.2mm] hole on the marks, approximately 3/8" [9.5mm] deep. Do not drill completely through the top of the aileron. ❏...
  • Page 8: Install The Elevators

    Apply 30-minute epoxy to the wood, top and bottom. Slide the stabilizer through the fuse so that approximately 1/2" [12.7mm] of bare wood is showing on the other side and apply epoxy to the wood. Now align the stabilizer, remove the masking tape and wipe off any excess epoxy from the stabilizer and fuselage.
  • Page 9: Install The Rudder

    wire in each elevator half. Check that both elevator halves Install the Main Landing Gear are aligned. If not, remove the elevators and while holding one leg of the elevator joiner wire, slightly bend the other. Reinstall the elevator halves and check again. ❏...
  • Page 10: Install The Motor

    Install the Motor The Yak-55M EP has been designed to use the Great Planes RimFire .32 Outrunner Brushless motor. If you will be installing a different motor, you may need to modify the plywood motor box. ❏ ❏ 3. Install a 4mm wheel collar on the axle, then the foam main wheel, followed by a second 4mm wheel collar.
  • Page 11: Install The Radio System

    INSTALL THE RADIO SYSTEM Install the Elevator Servo ❏ 5. Thread a nylon clevis 16 turns onto a 2-56 x 10" [254mm] wire pushrod. Connect the clevis to a nylon control horn. Using the elevator pushrod, position the control horn in line with the servo arm. When positioned properly ❏...
  • Page 12: Install The Rudder Servo

    Install the Rudder Servo ❏ 5. Thread a nylon clevis 16 turns onto a 2-56 x 10" [254mm] wire pushrod. Connect the clevis to a nylon control horn. ❏ 1. Cut the covering away from the rudder servo opening Position the control horn so that it is centered on the line from on the left side of the fuselage, in front of the stabilizer.
  • Page 13: Install The Cowl

    Install the Cowl ❏ 8. Attach strips of adhesive-backed hook material to the cross members of the battery tray. The adhesive backed loop material can be attached to the back of the battery. This will ❏ 1. If you have installed the recommended RimFire .32 prevent the battery from sliding forward and aft.
  • Page 14: Apply The Decals

    Apply the Decals Set the Control Throws The box photographs show the location of the decals on To ensure a successful first flight, set up your Yak-55M EP the airplane. Refer to the box for the exact placement of the according to the control throws specified in the manual.
  • Page 15: Set The Control Throws

    ❏ 3. Move the elevator up with your transmitter and move the ruler forward so it will remain contacting the trailing edge. The distance the elevator moves up from the center is the “up” elevator throw. Measure the down elevator throw the same way.
  • Page 16: Finish The Model

    If additional weight is required, may not reach their full capacity and you may be flying with use Great Planes (GPMQ4485) “stick on” lead. A good place batteries that are only partially charged. to add stick-on nose weight is to the motor box (don’t attach...
  • Page 17: Balance Propellers

    We use a Top Flite Precision Magnetic Prop Balancer NiMH peak charger. (TOPQ5700) in the workshop and keep a Great Planes • ONLY use a LiPo approved charger, Fingertip Prop Balancer (GPMQ5000) in our flight box. • NEVER charge in excess of 4.20V per cell.
  • Page 18: Ama Safety Code

    AMA SAFETY CODE ( CHECK LIST EXCERPTS Read and abide by the following excerpts from the Academy During the last few moments of preparation your mind may of Model Aeronautics Safety Code. For the complete Safety be elsewhere anticipating the excitement of the fi rst fl ight. Code refer to Model Aviation magazine, the AMA web site or Because of this, you may be more likely to overlook certain the Code that came with your AMA license.
  • Page 19: Flight Notes

    FLIGHT NOTES The Yak-55M EP is a great-flying model that flies smoothly and predictably. The Yak-55M EP does not, however, possess the self-recovery characteristics of a primary R/C trainer and should be flown only by experienced R/C pilots. CAUTION (THIS APPLIES TO ALL R/C AIRPLANES): If, while flying, you notice an alarming or unusual sound such as a low-pitched "buzz,"...

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