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JMB-Jets PC 21 Instruction Manual

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Instruction Manual PC 21
Ver. 1.0 28.03.2019 Written by F.W
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Summary of Contents for JMB-Jets PC 21

  • Page 1 Instruction Manual PC 21 Ver. 1.0 28.03.2019 Written by F.W...
  • Page 2 Before you get start building and setting up your aircraft, please make sure you have read this manual and understood it. If you have any question, please don’t hesitate to contact your dealer. Below are the contact list Email: kingtechturbine@gmail.com Liability Exclusion and Damages You have acquired a kit, which can be assembly into a fully working R/C model when fitted out with suitable accessories, as described in the instruction manual...
  • Page 3 Attention ! This aircraft is a high end product and can create an enormous risk for both pilot and spectators . If not handled with care& used according to the instructions. Make sure that you operate your PC21 according to the laws and regulations from the governing model flying in the country of use.
  • Page 4 Did you read the hints and warnings above and the instruction carefully? Did you understood everything in this manual completely ? Then and only then, let’s start assembling your JMB PC 21, If not please read it again before you continue.
  • Page 5 How to Glue the Plastic Hinge in My Personal favorite are the UHU Endfest 300, I do not recommend to use any 5 min Epoxi for this work step. Fill the Hole on one side with the mixed glue, you can use a Siring or just a small Wood to fill it up a bit, if the glue goes around 5mm in to the hole is enough.
  • Page 6 How to Glue the Plastic Hinge in Repeat this Work until all hinges are in, Make sure the Orientation of the hinge is 90 degree to the hinge line. Apply on the plastic hinge until half way around also Glue same you did already on the opposite side.
  • Page 7 How to Glue the Plastic Hinge in 1mm Gap Ver. 1.0 28.03.2019 Written by F.W...
  • Page 8 How to Glue the CFK Horns in I'm decide to use this Horns because they look much nicer as the ones which coming with the Kit. The Order number you can find on Page 4. Mark the right position and drill 2 x 5,5 mm holes , be careful that you not going to drill all way through the Part! after remove the Cover film.
  • Page 9 Mount the Servo, the output shaft face to the leading-edge. Now push the Servohorn against the Balsa blanking, you can feel now On the outside where you have to start cutting the hole . Ver. 1.0 28.03.2019 Written by F.W...

  • Page 10: Vertical Stabilizer

    Vertical Stabilizer Start with a small hole and make sure You are on the right Spot. Open the Hole until you can see the Horn. Use tape for mark the size of The slot Ver. 1.0 28.03.2019 Written by F.W...
  • Page 11 Vertical Stabilizer Glue the CFK Horn like you see on Page 8. Finish the Linkage , I use a 3mm Threaded rod because the Linkage Supplied in the Kit was not usable Mount the Servohorn cover by glue or Screwing (The cover set you can buy separate) Ver.

  • Page 12: Horizontal Stabilizer

    Horizontal stabilizer Mount the Servo the output shaft face to the trailing-edge. Glue the CFK Horn in like you see on Page 8. Finish the Linkage , I use a 3mm Threaded rod because the Linkage Supplied in the Kit was not usable Ver.
  • Page 13 Horizontal stabilizer Mount the Servohorn cover by Glue or Screwing (The cover set you can buy separate) I face the problem that one Stab are not align properly. It mean there was a gap from around 5 mm on the front pin, so I decide to modify the mounting by add 2 screws .
  • Page 14 Horizontal stabilizer First I open the front pinhole to the size of 3 x 15 mm. this area is reinforced With plywood from inside. the same you have to do on the stab side I cut from GFK sheet (CFK or similar Is also ok) a strip with 115 x 15 mm After I glued it in to the fuselage The tongue should look out 15mm...
  • Page 15 Horizontal stabilizer Drill a hole with 2,5mm through all Remove the Stab and cut a M3 thread in the tongue. In the stab you need to drill a 3mm hole Now the Stab fit perfect Ver. 1.0 28.03.2019 Written by F.W...
  • Page 16 Wing After you finish gluing the Aileron and Flap hinges in you can start to assemble the Servos on the Hatches. All Servos need to assemble like that the Servo output shaft face to the trailing edge. Glue the CFK Horn in like you see on Page 8.
  • Page 17 Wing Finish the Linkage , I use a 3mm Threaded rod because the Linkage Supplied in the Kit was not usable Mount the Servohorn cover by Glue or Screwing (The cover set you can buy separate) Ver. 1.0 28.03.2019 Written by F.W...
  • Page 18 Wing I sprayed my retract Door and support with Granit design color which you can buy at some Hardware shops, it looks much nicer and the wood is a moister resist Drill in each support a 3,5mm hole for guiding the brake tube or cable. Ver.
  • Page 19 Wing Notice : Make sure all screws from the retract are tight by using Loctite . Also check if you have the pneumatic version the Cylinder are not leaking. Assemble the Strut with the Door support as you can see Also connect the pressure lines (Cables) Screw the Retract with the...
  • Page 20 Wing The Coverplate get screwed on with the 2 mm wood screws. Screw the door on and adjust it to the door outline on the wing, There should be a gap from around 2mm between the door and the wing door outline . Glue the support on the Retract Strut by using Silicon Ver.
  • Page 21 Wing Ver. 1.0 28.03.2019 Written by F.W...
  • Page 22 Rear Fuselage For help routing the cables through the Tail , I am use a 6 mm Carbon tube. Ver. 1.0 28.03.2019 Written by F.W...
  • Page 23 Rear Fuselage I am using this 3D Printing Servo connector Frames. For the Tail - Stabilizer section I want be able to split the Fuselage For Transport or storage. So I use this 10pin connector Ver. 1.0 28.03.2019 Written by F.W...

  • Page 24: Front Fuselage

    Front Fuselage At my fuselage some Glue joints was not enough Glue, so I add on all areas where I could reach some more . Ver. 1.0 28.03.2019 Written by F.W...
  • Page 25 Front Fuselage For protect the Wood i painted inside all grey . Ver. 1.0 28.03.2019 Written by F.W...
  • Page 26 Front Fuselage At the Engine bay I used the Granit spray paint Ver. 1.0 28.03.2019 Written by F.W...
  • Page 27 Front Fuselage Notice : Make sure all screws from the retract are tight by using Loctite . Also check if you have the pneumatic version the Cylinder are not leaking. The front Retract are Screwed in by the 4mm screws, add a bit Loctite for secure it , screw the Servo in like you can see and make the Steering Cable as on the Pic.
  • Page 28 Front Fuselage The Wing Fuselage Connection for the Servo and Air im using the green Multiplex connector and 3mm Festo Fittings. The Green parts are 3D printed parts. Ver. 1.0 28.03.2019 Written by F.W...
  • Page 29 Front Fuselage Cut out if necessary for the Engine clamp Install the Engine , the holes in the Front head Former are fit perfect for the SPT5 Ver. 1.0 28.03.2019 Written by F.W...
  • Page 30 Front Fuselage Install the Bottom cowling und start Step by Step to give the right clearance. The cut out should be give the exhaust around 5 mm clearance Ver. 1.0 28.03.2019 Written by F.W...
  • Page 31 Front Fuselage I paint the composite parts with grey color as I did with the Fuselage, also I apply on the top cowling Aluminum Tape for the head protection. Open the Bottom Cowling as the turbine get maybe not enough air, also I installed on the cut outs a mosquito net.
  • Page 32 Front Fuselage The Complete finish layout, use this as guiding for you installation. Ver. 1.0 28.03.2019 Written by F.W...
  • Page 33 Front Fuselage The Final finish is to get the Cockpit in and apply the Sticker Ver. 1.0 28.03.2019 Written by F.W...
  • Page 34 Adjustments The center of gravity is the center of the wingtube . Check it with full Headertank and extended landing gear. We have listed below the control movements recommended to fly the aircraft. Pilots sometimes prefer a different feeling, but you will find your personal setting using these deflections as a starting point.