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4

ADDITIONAL ITEMS REQUIRED

Adhesives and Building Supplies

This is the list of adhesives and building supplies required 
to finish the Yak-55M EP. Order numbers are provided in 
parentheses. 

  1/2 oz. [15g] Thin Pro

 CA (GPMR6001)

  Pro 30-minute epoxy (GPMR6043)

  Threadlocker thread locking cement (GPMR6060)

  Denatured alcohol (for epoxy clean up)

  Paper towels

  Drill bits: 1/16" [1.6mm], 3/32" [2.4mm]

  #1 Hobby knife (RMXR6903)

  #11 blades (5-pack RMXR6930)

  Small T-pins (100, HCAR5100)

  Tape measure

  Pliers with wire cutter (HCAR0625)

  Phillips Head screw driver 

  Masking tape

  Metal cutting file

Optional Supplies and Tools

Here is a list of optional tools mentioned in the manual that 
will help you build the Yak-55M EP.

  2 oz. [57g] spray CA activator (GPMR6035)

  CA applicator tips (HCAR3780)

  CA debonder (GPMR6039)

  Pro 6-minute epoxy (GPMR6042)

  Epoxy brushes (6, GPMR8060)

  Mixing sticks (50, GPMR8055)

  Mixing cups (GPMR8056)

  AccuThrow

 Deflection Gauge (GPMR2405)

  CG Machine

 (GPMR2400)

  21st Century

®

 sealing iron [COCR2700]

  21st Century iron cover [COVR2702]

IMPORTANT BUILDING NOTES

• 

There are three types of screws used in this kit:

Sheet metal screws are designated by 
a number and a length. For example, 
#6 x 3/4" [19mm] 

Machine screws are designated by a 
number, threads per inch, and a length. 
For example 4-40 x 3/4" [19mm]

• 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

, and then slightly modify or

 custom 

fit

 the part as necessary for the best fit.

 Whenever the term 

glue

 is written you should rely upon 

your experience to decide what type of glue to use. When 
a specific type of adhesive works best for that step, the 
instructions will make a recommendation.

 We recommend 30-minute epoxy to install the stabilizer, 

because you will need the working time. 6-minute epoxy can 
be used for the remaining assembly, but 30-minute epoxy 
can also be used.

 

Photos

 and 

sketches

 are placed 

before

 the step they 

refer to. Frequently you can study photos in following steps 
to get another view of the same parts.

 

The Yak-55M EP is factory-covered with Top Flite

®

 

MonoKote

®

 film. Should repairs ever be required, MonoKote 

can be patched with additional MonoKote purchased 
separately. MonoKote is packaged in six-foot rolls, but 
some hobby shops also sell it by the foot. If only a small 
piece of MonoKote is needed for a minor patch, perhaps a 
fellow modeler would give you some. MonoKote is applied 
with a model airplane covering iron, but in an emergency a 
regular iron could be used. A roll of MonoKote includes full 
instructions for application. Following are the colors used on 
this model and order numbers for six foot rolls. 

 White 

(TOPOQ0204)

 

Sapphire Blue (TOPQ0226)

 

True Red (TOPQ0227)

KIT INSPECTION

Before starting to build, take an inventory of this kit to make 
sure it is complete, and inspect the parts to make sure they 
are of acceptable quality. If any parts are missing or are not of 
acceptable quality, or if you need assistance with assembly, 
contact 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

Summary of Contents for YAK-55M Yakovlev

Page 1: ...package the problem will be evaluated as quickly as possible Length 47 in 1195mm Radio 4 Channel minimum or 5 Channel with mixing for separate ailerons Motor ESC Prop RimFire 32 42 50 800 Wingspan 51...

Page 2: ...eat Planes web site at www greatplanes com Open the Airplanes link then select the Yak 55M EP ARF If there is new technical information or changes to this model a tech notice box will appear in the up...

Page 3: ...05mm servo extensions are required for the rudder and elevator servos If you are using a radio system that does not support mixing functions a Y harness will also be required to connect the aileron se...

Page 4: ...ly upon your experience to decide what type of glue to use When a specific type of adhesive works best for that step the instructions will make a recommendation We recommend 30 minute epoxy to install...

Page 5: ...rs 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 List Payment by cre...

Page 6: ...ger than the S3115 servo If the S3150 servo is installed both ends of the aileron servo opening will need to be trimmed approximately 1 32 1mm 3 Install the servo into the servo opening Drill through...

Page 7: ...silicone clevis retainer over the clevis With the aileron servo and the aileron centered mark the aileron pushrod where it crosses the aileron servo arm Make a 90 bend at the mark Cut the pushrod 3 8...

Page 8: ...bottom of the stabilizer just outside the cut covering Insert the stabilizer in the fuse so that part of the bare wood is showing Apply 30 minute epoxy to the wood top and bottom Slide the stabilizer...

Page 9: ...line 2 Install the three CA hinges into the rudder Insert the tail gear wire in the rudder and check the fit of the rudder on the fin Use pins to hold the CA hinges in position 3 Coat the inside of t...

Page 10: ...he threads of the SHC screws 5 Repeat steps 1 4 for the left main landing gear Install the Motor The Yak 55M EP has been designed to use the Great Planes RimFire 32 Outrunner Brushless motor If you wi...

Page 11: ...tall and center the servo arm 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 li...

Page 12: ...ition the control horn so that it is centered on the line from the previous step Mark the location of the mounting holes onto the rudder Drill a 1 16 1 6mm hole on the marks Do not drill completely th...

Page 13: ...loop material around the battery Trim off the excess material Install the Cowl 1 If you have installed the recommended RimFire 32 brushless motor the cowl louvers will need a 1 3 4 38mm to 1 7 8 48mm...

Page 14: ...4 CHANNEL RADIO SET UP STANDARD MODE 2 3 Make certain that the control surfaces and the throttle respond in the correct direction as shown in the diagram If any of the controls respond in the wrong d...

Page 15: ...ate to fit your motor s prop adapter Install the spinner back plate propeller with washer and prop nut and the spinner cone Secure the spinner cone to the back plate with two 3 x 12mm sheet metal scre...

Page 16: ...ed to support weight Begin by placing incrementally increasing amounts of weight on the fuse over the motor box until the model balances Once you have determined the amount of weight required it can b...

Page 17: ...sand the propeller may throw such material in your face or eyes Keep your face and body as well as all spectators away from the plane of rotation of the propeller as you run the motor Keep these items...

Page 18: ...ment listed in the complete AMA Safety Code 9 Under no circumstances may a pilot or other person touch a powered model in flight nor should any part of the model other than the landing gear intentiona...

Page 19: ...it will probably flutter again unless the problem is fixed Some things which can cause flutter are Excessive hinge gap Not mounting control horns solidly Poor fit of clevis pin in horn Side play of w...

Page 20: ......

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