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3D AEROWORKS Yakovlev Yak-3 Assembly Manual And User Manual
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3D AEROWORKS Yakovlev Yak-3 Assembly Manual And User Manual

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ASSEMBLY MANUAL
AND USER GUIDE
Yakovlev
Yak – 3
By 3D AEROWORKS

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Summary of Contents for 3D AEROWORKS Yakovlev Yak-3

  • Page 1 ASSEMBLY MANUAL AND USER GUIDE Yakovlev Yak – 3 By 3D AEROWORKS...
  • Page 2 OVERVIEW: This replica of the Yakovlev Yak 3 is designed for quick and easy construction and printed using light weight PLA (LW-PLA). For best results the canopy should be printed with clear PLA The motor mount and propeller assembly in regular PLA. A semi-scale propeller is included in the plans designed to suit the 2804 2300kv outrunner (5x4.75) in 2 or 3 blade configuration.
  • Page 5 REQUIRED TOOLS: KNIFE LIGHTER SANDPAPER (MEDIUM GRIT) PLIERS CA GLUE SCREW DRIVERS FILE OR RASP REQUIRED COMPONENTS: X1 2804 2300KV MOTOR (or similar) X1 20AMP ESC X1 950MAH 2S LIPO OR SIMILAR X4 3.7G MICRO SERVO BAMBOO SKEWERS 3MM HEAT SHRINK TUBE 3mm X2 10mm X 10mm X 2mm MAGNET (ROUND) X10 MICRO HINGES (OPTIONAL) VELCRO...
  • Page 6 ASSEMBLY INSTRUCTIONS After all parts have been printed, some may require to be cleaned as LW-PLA is prone to stringing. Do this by gently sanding back the rough sections with a file, sandpaper or blade until the surface is smooth. All faces which are to be glued to other parts need to be given a light sanding (scuff the surface) to assist with glue adhesion.
  • Page 7 Cut 15mm sections of skewer and place into alignment holes in the fuselage sections. NOTE - It may be required to open up the holes a small amount if the fit is too tight. Do this by using a 3mm drill bit. Gently spin it in reverse as you insert it into the hole. This will ensure the bit does not tear the print.
  • Page 8 From part “fuse 3” remove the inner section of the lead tunnel with a knife or heated metal rod to allow the servo lead for the aileron to pass through. (refer image) Test fit the hinges in the hinge slots for each control surface and its parent part, this will make gluing the control surface easier when the time comes.
  • Page 9 Place a drop of CA in the hinge slot of the control surface and insert the hinge. Be sure that the hinge is perpendicular to the control surface. Then bend the hinges to 90deg back and forward a few times to make sure they are appropriately loose. (the outer aileron and elevator hinge may need to be trimmed).
  • Page 10 Bend a section of 1mm steel wire to connect the elevators together. Test fit the wire and the elevators connection to the horizontal stabilisers before gluing the wire to the elevators or the elevators to the tail plane. There should be un-obstructed travel. Glue the rudder, elevators and ailerons in place.
  • Page 11 Glue the wingtips and tail cone in place (if required). Cut one 110mm section and four (2 per wing)15mm sections of skewer. Insert the 15mm sections into the wings and the 110mm section through the fuselage. This is a makeshift spar to assist supporting the landing gear.
  • Page 12 Run a string through the aileron servo wire tube from the mount hole for the aileron servo to the wing root. Leave enough length so that you will be able to feed the string through the fuse later. Install all servos using a small amount of hot glue to secure it in place. The aileron servos mounting tabs will need to be trimmed.
  • Page 13 Install the magnets to both the fuselage and the canopy using CA. Install the desired motor mount to the fuselage using m2 screws. The mount holes may need to be pre-drilled with a 2mm drill bit. Wire up the ESC to the motor. The esc is intended to sit below the battery floor with the wires connecting to the battery through the hole in the mid section of the fuselage floor.
  • Page 14 Install the motor to the motor mount. The motor mount holes may need to be pre-drilled with a 2mm drill bit. Fit the propeller hub to the motor and screw in the blades using m2 x 10mm screws. Then secure the spinner to the hub. The propeller blades will need to be pre-drilled with a 2mm drill bit for ease of fitment.

  • Page 15: Top View

    ** IF NOT USING LANDING GEAR SKIP AHEAD TO STEP 27 ** Bend up the 2mm section of piano wire according to the diagram below. TOP VIEW FRONT VIEW (X)mm refers to the distance required to fit the wheel and wheel lock of your choice to the axel.
  • Page 16 Add a slight rake forward to the main gear leg. This will assist in preventing the model from nosing over on grass fields. See below.
  • Page 17 Insert the gear leg into the wing as pictured below. Apply a small amount of hot glue to the outer bend of the leg (red circle on image above. This will hold it in place but also allow it to be removed if desired. Fit the wheel and secure it with a shaft collar.

  • Page 18: Side View

    Bend up the tailwheel link from 1mm piano wire as pictured below. SIDE VIEW ISO VIEW (X)mm refers to the distance required to fit the wheel and wheel lock of your choice to the axel. Test wheel was a 20mm diameter x 5mm wide printed. 2mm should protrude from the wheel collar once fitted to allow crimping of the wire.
  • Page 19 Insert the tail wheel assembly into the rudder as pictured. The slot should not be drilled out so as to maintain friction and stop the wheel from rotating in the slot. A drop of CA can be applied to the link once in place if desired however this will make removal later on much more difficult.
  • Page 20 BALANCING AND CG The ballast lead required should be placed in the hollow section of fuse 1. NOTE! Balancing needs to be done with the propeller attached. See below Installing the propeller: Install the blade to the hub and secure it with an m2 x 10mm screw. (screw direction towards the back of the hub) Install the hub to the motor.
  • Page 21 RANGE OF TRAVEL: NORMAL FLIGHT: Elevator +/- 5mm Rudder +/- 6mm Aileron +/- 7mm AEROBATIC: Elevator +/- 8mm Rudder +/- 15mm Aileron +/- 10mm LAUNCHING: It was found that the safest and most successful launch technique for this model was the under-arm style.
  • Page 22 PARTS LINKS: 2804 2300KV MOTOR https://www.aliexpress.com/item/32880887286.html?spm=a2g0o.productlist.0.0.659f6c8bwc R3rb&algo_pvid=1a051112-8f8e-4d7e-86b6-08e641484301&algo_expid=1a051112-8f8e-4d7 e-86b6-08e641484301-6&btsid=0b0a555b16077432899228522e950a&ws_ab_test=searchw eb0_0,searchweb201602_,searchweb201603_ 20AMP ESC https://www.aliexpress.com/item/32905632543.html?spm=a2g0o.productlist.0.0.293536aecw u7yT&algo_pvid=09b70550-d77e-46d3-b25e-621167aaeef6&algo_expid=09b70550-d77e-46 d3-b25e-621167aaeef6-0&btsid=0b0a556616077433274567589e7b03&ws_ab_test=search web0_0,searchweb201602_,searchweb201603_ 950MAH 2S LIPO OR SIMILAR https://www.aliexpress.com/item/32907577121.html?spm=a2g0s.9042311.0.0.30714c4dJd4d 3.7G MICRO SERVO https://www.aliexpress.com/item/32965734270.html?spm=a2g0o.productlist.0.0.57d95e97a WNNAJ&algo_pvid=4824ea1c-06ed-43e8-b6c7-9737d1226dbe&algo_expid=4824ea1c-06ed -43e8-b6c7-9737d1226dbe-0&btsid=0bb0623415991458444523660eb7bd&ws_ab_test=sea rchweb0_0,searchweb201602_,searchweb201603_ BAMBOO FOOD SKEWERS (3mm diameter) HEAT SHRINK TUBE 3mm https://hobbyking.com/en_us/turnigy-3mm-heat-shrink-tube-black-1mtr-1.html?queryID=c16c 094bb26b18e39fabcb12a93a96cb&objectID=46911&indexName=hbk_live_magento_en_us_ products...
  • Page 23 10mm X 10mm X 2mm MAGNET (ROUND) https://www.aliexpress.com/item/1005001362617359.html?spm=a2g0o.productlist.0.0.5da36 07dAATh5j&algo_pvid=b9e32b8a-0d4f-469a-b838-b478442dda50&algo_expid=b9e32b8a-0 d4f-469a-b838-b478442dda50-0&btsid=0bb0623a15991797178681785e1811&ws_ab_test=s earchweb0_0,searchweb201602_,searchweb201603_ MICRO HINGES (optional in place of lw-pla hinges) https://hobbyking.com/en_us/super-light-pivot-round-hinges-d2xw8xl24mm-12pcs.html VELCRO – (local hardware store) 200mm carbon strips 3mm x 0.6mm (optional) https://www.aliexpress.com/item/32576381076.html?spm=a2g0o.productlist.0.0.4e922cc3nR 6757&algo_pvid=500714e5-ce74-4e52-a1b0-e349cac3f595&algo_expid=500714e5-ce74-4e 52-a1b0-e349cac3f595-7&btsid=0bb0623e15991463277515177efc08&ws_ab_test=searchw eb0_0,searchweb201602_,searchweb201603_ m2 x10mm screws https://www.ebay.com.au/itm/400PCS-M2-M2-6-Pan-Head-Self-Tapping-Screws-Assorted-Kit -Stainless-Steel-Black/254399626404?hash=item3b3b663ca4:g:CLEAAOSwQLZdsqkd&frce ctupt=true M2 push rod (200mm min length)
  • Page 24 Thank you for supporting us! We hope you enjoy many hours of flying your micro YAK 3. If you have any questions regarding the build process or set-up of your model, please contact us at: Aeroworks3d@outlook.com...