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RJX Hobby X-TREME 50 Assembly Instructions Manual

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ASSEMBLY INSTRUCTIONS

Technical Data:

Overall Length
Overall Height
Overall Wide
Main Rotor Diameter
Tail Rotor Diameter
Gear Ratio
Gross Weight
PLEASE READ AND UNDERSTAND THE INSTRUCTIONS THOROUGHLY BEFORE ASSEMBLY
1260 mm
390 mm
210 mm
1339 mm
233 mm
8.5:1:4.7 (8.5:1:5.2 Optional)
3200g - 3300g
VERSION1.4

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Summary of Contents for RJX Hobby X-TREME 50

  • Page 1: Assembly Instructions

    ASSEMBLY INSTRUCTIONS VERSION1.4 Technical Data: 1260 mm Overall Length 390 mm Overall Height 210 mm Overall Wide 1339 mm Main Rotor Diameter 233 mm Tail Rotor Diameter 8.5:1:4.7 (8.5:1:5.2 Optional) Gear Ratio 3200g - 3300g Gross Weight PLEASE READ AND UNDERSTAND THE INSTRUCTIONS THOROUGHLY BEFORE ASSEMBLY...
  • Page 2 It may look easy when watching an experienced pilot flying his model, but perseverance and hours of practice will needed before you will be able to fly and opperate the model safely. RJX HOBBY suggests you join a club or seek help from an experienced pilot to help you in your first hops off the ground and then as with all things the more you practice the better you will become.

  • Page 3: Table Of Contents

    TABLE OF CONTENTS 1. Introducion 2. Table of contents 3. Additional Items Required 4. Tools Required 5. Assembly A1 - A28 S1-S4 6. Servo Installation 7. Servo Adjustment S5-S6 8. Rotor Head Setup Rh1-Rh3 9. Final Servo and Radio Setup R1-R5 10.

  • Page 4: Additional Items Required

    ADDITIONAL ITEMS REQUIRED TO COMPLETE THE Gyro system with Choose a CCPM compatible PCM Radio System for Three large and two small disks or Heading Hold Helicopters with a minimum of 6 channels. arms are required 1x Servo extension 100 mm 50 Size glow engine,Os 50 Hyper, Ys50 50 Size Muffler (for kits without Muffler) 1,5V Glow Plug Battery...

  • Page 5: Tools Required

    TOOLS REQUIRED (NOT INCLUDED) Allen Drivers 1,5mm - 2mm - 3mm - 4mm Phillips Drivers Large,Middle, Small Nut Drivers 4,5mm - 5,5mm - 7mm Scissors Universal Pliers Cutter Sandpaper Pitch Gauge Ball Link Plier Metric Ruler Grease Cyanoacrylate (CA/Superglue) Epoxy 30 Minutes Universal RC Cross Wrench Ball Link Driver Ball Link Tool...
  • Page 6 STEP 1-1 Clutch Bell / Starter Shaft BB Block Assembly USE THREADLOCK IMPORTANT: USE THREADLOCK IMPORTANT: Before assembling sand the inner side of the clutch bell and the side from the clutch liner you will glue in.Use 30 minutes EPOXY to glue the liner in the clutch bell and fix them with some clips to ensure a good and thight fit of the liner.
  • Page 7 STEP 1-3 Drive Gear Assembly CAUTION: USE THREADLOCK Clean off any dust on drive gears. Add grease to the one way bearing, to ensure smooth opperation. Don´t fix the four M3x6 bolts before M3x6 Socket Head Bolt having all four in place. 85T Main Gear Autorotation Spacer IMPORTANT:...
  • Page 8 STEP 1-5 Swash Control Lever Assembly USE THREADLOCK CAUTION: Flange facing upward Control the correct fit of M2x10 Countersunk Screw the Flanged Bearings. Jointball F3x6x2.5 Bearing with Flange Control Lever M2 Nut NOTE: Assembly 2 sets of this lever CAUTION: Add a small amount of CA between Flange facing downward the two Control Lever parts.
  • Page 9 STEP 1-7 Front Tail Arm Assembly USE THREADLOCK CAUTION: M2x10 Countersunk Screws Do NOT over tighten the M3x20 bolts to avoid breaking the bearings. M3x20 Socket Head Bolt Joinball Control Lever Washer 3x5x1 View of the completed Assembly Leverblock STEP 1-8 Battery Tray Assembly USE THREADLOCK M3x6 Countersunk Head Bolt Special Crossmember...
  • Page 10 STEP 2-1 Main Frame Assembly USE THREADLOCK M3x10 SocketHead Bolt Washer 3x8x1 Main Frame Right 32mm Crossmember Main Frame Left M3x8 Socket Head Bolt CAUTION: Bottomplate Mounting Block M3x10 SocketHead Bolt 32mm Crossmember The main frame sides are NOT the same. Look at the X-TREME writing cutout on the frame sides to ensure that you have the correct sides.
  • Page 11 STEP 2-3 Main Frame Assembly Main Frame Left (Assembled in Step 2-2) 32mm Crossmember USE THREADLOCK Gyro Tray (To fit into the upper cutout) Gyro Tray Main Frame Right (Assembled in Step 2-1) M3 Lock Nut M3x10 Socket Head Bolt View of the completed Assembly M3x10 Socket Head Bolt with Finish Cap´s...
  • Page 12 STEP 2-5 Main Frame Assembly USE THREADLOCK Short Fan Shroud Mount M3x20 Socket Head Bolt Self Taping Screw 2,6x12 Washer 2,6x6x0,8 Short Fan Shroud Mount Long Fan Shroud Mount NOTE: In this step no screw is 12mm Spacer placed here. Washer 2,6x6x0,8 Self Taping Screw 2,6x12 M3x20 Socket Head Bolt...
  • Page 13 STEP 2-7 FRONT CCPM LEVER ATTACHMENT CAUTION: Assembled in Step1-5 M3 Lock Nut Do not over tighten the M3x20 bolts to avoid breaking the bearings. M3x20 Socket Head Bolt Washer 3x5x2 Spacer 3x8x5,5 Spacer 3x8x5,5 Washer 3x5x2 Assembled in Step1-5 M3x20 Socket Head Bolt STEP 2-8 REAR CCPM LEVER ATTACHMENT M4x4 Set Screw...
  • Page 14 STEP 3-1 Landing Skid Assembly Note: For extra strength place a second Landing Strut.On the NOTE: top of both sides and the other on the lower part of the Assemble two sets.Do NOT tighten the screws for later adjustment. other set. As shown in the diagram below.. Landing Strut To be used in back M3x14 Socket Head Bolt...
  • Page 15 STEP 3-3 Landing Skid Assembly USE THREADLOCK Bottom Plate View of the completed Assembly NOTE: Assembled in Step 3-2 Place the complete frame after assembling on a M3x14 Socket Head Bolt flat surface and tighten the screws from the Landingskid assembly.Insure that the the skids are flat on the surface.
  • Page 16 STEP 4-2 TAIL PINION GEAR MESH IMPORTANT about GEAR MESH: In order to archive smooth operation of the main drive train, it is important that the correct gearmesh is obtained after assembly. Try to mesh the gears to get the minimum amount of backlash and the smoothest rotation. Remember that too little clearence and the train will be too stiff to work properly and too much clearance may result the teeth stripping off when under load.
  • Page 17 STEP 4-3 COOLING FAN ASSEMBLY USE THREADLOCK Drive Nut NOTE: ( incl. with OS Engine) If a drive washer is included with the engine you willl need to remove this. (Contact your dealer for information). For OS Engines, the thin black washer supplied will be used Tapper Collet Upper under the bottom collet.
  • Page 18 STEP 4-5 ENGINE INSTALATION Assembled in STEP 4-3 Engine Mount NOTE: There are two different side. Control facing of the mount. Washer 3x8x1 IMPORTANT: Do NOT tighten the srews for later alignment. M3x12 Socket Head Bolt Spring Washer STEP 4-6 ENGINE INSTALATION USE THREADLOCK Engine Crossmount M3x6 Socket Head Bolt...
  • Page 19 STEP 4-7 ENGINE INSTALATION IMPORTANT: M3x14 Socket Head Bolt Do NOT tighten the four M3x14 srews for later alignment of the engine. M3x8 Socket Head Bolt Finish Cap View of the completed Assembly M3x14 Socket Head Bolt NOTE: Finish Cap M3x8 Socket Head Bolt It is possible that you may have to remove the carburator to insert the...
  • Page 20 STEP 5-1 SWASHPLATE ASSEMBLY USE THREADLOCK Swash Guide Pin 9mm Ballarm Jointball View of the completed Assembly Jointball Spacer 2x4x2,75 M2x10 Countersunk Screw STEP 5-2 WASHOUT ASSEMBLY USE THREADLOCK Washout Base Washout Arm M2x10 Countersunk Screw View of the completed Assembly Jointball Washout Arm Washer 3x5x1...
  • Page 21 STEP 5-3 SWASHPLATE / WASHOUT INSTALLATION BOTTOM IMPORTANT: Insure the correct direction View of the completed Assembly NOTE: Attach the two Washoutlinks to the swash plate. STEP 5-4 SEESAW INSTALLATION USE THREADLOCK M3x6 Socket Head Bolt Rotor Stopper Centerhub M3x6 Socket Head Bolt Bearing Collar M3x6 Socket Head Bolt Seesaw...
  • Page 22 STEP 5-5 MAIN BLADE HOLDER ASSEMBLY USE THREADLOCK Main Blade Holder M3x6 Socket Head Bolt Pitch Arm NOTE: Assemble 2 sets of the Main Blade Holder View of the completed Assembly STEP 5-6 MIXER ARM ASSEMBLY IMPORTANT: NOTE: Mixer settings are explained on Page Rh1 more detailed. Don´t use in this step threadlock to fix the Ball arm.
  • Page 23 STEP 5-7 MAIN ROTOR HEAD ASSEMBLY USE THREADLOCK NOTE: Use silicon grease for the dampers. This also needs to be reaplied as part Assembled in STEP 5-4 of your on going maintenace (after about 30 to 40 flights) to ensure that Spindle the dampers not getting dry.
  • Page 24 STEP 5-9 MAIN ROTOR HEAD ASSEMBLY M3 Lock Nut Washer 3x8x1 Jesus Bolt M3x20 Phase Ring Set Screw M3x4 View of the completed Assembly STEP 5-10 SWASH GUIDE ASSEMBLY USE THREADLOCK Finish Cap M3x8 Socket Head Bolt Special Crossmeber Swash Guide M3x6 Socket Head Bolt M3x8 Socket Head Bolt Finish Cap...
  • Page 25 STEP 5-11 CONTROL ROD INSTALLATION USE THREADLOCK NOTE: Assembly both sides of the flybar control arm on the same way M2,5x6 Socket Head Bolt M2,5x6 Socket Head Bolt Flybar Control Arm Linkrod Linkage Rod B Linkage Rod A Linkage Rod C Link A NOTE: The size of the linkage rod can variate depending...
  • Page 26 STEP 5-12 MAIN ROTOR HEAD ASSEMBLY M3x3 Set Screw USE THREADLOCK Flybar Paddle Stopper Flybar Paddle M3x3 Set Screw IMPORTANT: Insure the correct direction of the Flybar Paddle. M3x3 Set Screw M3x3 Set Screw Flybar Paddle Stopper Flybar Paddle View of the completed Assembly M3x3 Set Screw NOTE: Adjust so that A and B are exactly the same distance...
  • Page 27 STEP 6-1 TAILCASE ASSEMBLY USE THREADLOCK Pin 14mm M3x4 Set Screw Tail Pulley 10T IMPORTANT: Ensure to enter the side with the screw hole in the tailcase first, to secure the 14mm pin with the M3x4 Set Screw. Tail Shaft Tailcase View of the completed Assembly STEP 6-2 TAILCASE ASSEMBLY...
  • Page 28 STEP 6-3 TAILCASE ASSEMBLY NOTE: Check that the Joint ball is working freely and smoothly in the tail pitch control lever. View of the completed Assembly STEP 6-4 TAILCASE ASSEMBLY USE THREADLOCK Tailhub M2 Nut Tail Grip with Ball Tail Grip 4x10x4 Bearing Lock Nut Tail Grip with Ball...
  • Page 29 STEP 6-5 TAILCASE ASSEMBLY USE THREADLOCK NOTE: Clip the linkage into the jointball and check that the assembly works smooth. M4x4 Set Screw IMPORTANT: Fix the two M4x4 Set Screw into the holes from the tailshaft. View of the completed Assembly STEP 6-6 TAILCASE ASSEMBLY USE THREADLOCK M3x8 Socket Head Bolt...
  • Page 30 STEP 6-7 TAILCASE ASSEMBLY USE THREADLOCK Assembled in Step 6-6 M3x6 Socket Head Bolt Plastic Washer Finish Cap Finish Cap Tailboom M3x10 Socket Head Bolt Vertical Fin View of the completed Assembly STEP 6-8 TAIL BOOM INSTALATION NOTE: Introduce the complete Tail Assembly into the Tail Boom Holder as shown in the diagram, Next .The Tail Rotor is pointing upwards.
  • Page 31 STEP 6-9 TAIL BRACE ASSEMBLY IMPORTANT: Sand the ends with sandpaper and apply epoxy glue. Also sand the inner of the metal supports. Metal End 4x6 CF Tube NOTE: Place a long M3 Screw like shown in the diagram on both ends. This way you ensure they are exactly Metal End parallel.
  • Page 32 STEP 6-11 TAIL BRACE INSTALLATION USE THREADLOCK M3x12 Socket Head Bolt View of the completed Assembly M3x10 Socket Head Bolt Tail Brace NOTE: 32mm Crossmember Fix the two M3x10 Socket Head bolt form M3x10 Socket Head Bolt the Horizontal Fin with Threadlock in this Step M3x12 Socket Head Bolt Tail Brace STEP 6-12 TAIL BRACE ASSEMBLY...

  • Page 33: Servo Installation

    STEP 7-1 SERVO INSTALLATION IMPORTANT: Depending on servo type used for cyclic, you have to install the servo from inside the frames. In the diagram below you see how to insert the servo into the frames. Servo Mounting Plate 1.Attach the servo mounting plate into the grommets from the servo.
  • Page 34 STEP 7-3 SERVO INSTALLATION Servo Mounting Plate Washer 2,6x7x1 The yellow market holes are for securing the rear servo cable. Use the delivered cable binder and cable cover line. Run the servo cable inside the frame to the front. 2,6x12 Selftapping Screws NOTE: IMPORTANT: Depending on servo type used...
  • Page 35 STEP 7-5 RECEIVER / GYRO / BATTERY INSTALLATION 1. Install the Battery and Receiver Install the Gyro sensor NOTE: a) Be sure to keep all the lead wires. etc., away from all servo arms,rods and sharp edge of the helicopter mechanics. After final installation group these wires together.
  • Page 36 STEP 7-6 SERVO ARM PREPARATION AND INSTALLATION NOTE: USE THREADLOCK Before attaching any of the servo output arms, turn on your radio and check that all of the primary control functions and trims are set to neutral. Pay special attention to the throttle/pitch channel where the stick has to be positioned manually unless your transmitter has a digital or graphical display of the output.
  • Page 37 STEP 7-7 LINKAGE CONNECTION NOTE: Assembly the linkage as shown below Check the correct side of the link with the logo. 1. RIGHT SERVO RJXHOBBY Use two large links 48,5mm and a 25mm rod. RJXHOBBY RJXHOBBY 90º 85mm Use four large links and two 60mm rod.
  • Page 38 STEP 7-8 LINKAGE CONNECTION 82mm 4. THROTTLE SERVO Use two large links and one 60mm rod. 90º RJXHOBBY IMPORTANT: Ensure that the carburator is 50% open in this position.Readjust the carburator arm if not. NOTE: To avoid differential throttle travel, make certain both the throttle arm and the servo horn are positioned as shown next in the diagram.

  • Page 39: Rotor Head Setup

    STEP 8-1 ROTOR HEAD SETUP In the diagrams below are explained the different settings posibilitys of this rotor head. There are many setups with different results. Adjust this settings on demand of you and your capability. Some of the settings can produce binding. Ensure that the ATV settings in the radio and linkage rod adjustments allowing no bindings.
  • Page 40 STEP 8-2 ROTOR HEAD SETUP IMPORTANT: SECURE ALL JOINT BALLS AND SCREWS WITH THREADLOCK USE THREADLOCK NOTE: In this STEP will be explained one setup of the rotor head what is good point for 3D maneuvers. There are many other settings possible. Linkage rod sizes from the rotor head are changing depending on this settings.
  • Page 41 STEP 8-3 PHASE RING ADJUSTMENT USE THREADLOCK NOTE: Once the swashplate is leveled it is important to set the phasing of the the washout base. This is done by rotating the rotor head until the flybar is perfectly in line with the body and the tailboom of the helicopter (see the diagram next).
  • Page 42 STEP 8-4 CANOPY ATTACHMENT NOTE: Use a 6mm drill to make the holes for the Canopy rubbers. Attache the canopy BEFORE making the holes to dobble check the attachment holes. Put the rubbers for about 3 min. in hot water to insert them more easier in the canopy.

  • Page 43: Final Servo And Radio Setup

    STEP 9-1 FINAL SERVO AND RADIO SETUP Rudder and Throttle Servo Adjustments 1.Checking the servo rotation. With the radio transmitter and receiver switched on, move the rudder and throttle sticks, and check that each servo moves in the correct direction. If either servo moves in the wrong direction, it will be necessary to reset that servo using the appropriate reversing function on your transmitter.
  • Page 44 STEP 9-2 FINAL SERVO AND RADIO SETUP Now that the radio system is fully installed the following items require precise adjustment to achieve the best results. 1. Dual Rates If dual rates are available for the aileron, elevator and rudder channels, then please ensure that they are all set to the same position for high and low ie.
  • Page 45 STEP 9-3 FINAL SERVO AND RADIO SETUP 7.Collective Pitch Setup. A Pitch Gauge will be required for this operation MIDDLE HIGH NORMAL +5.5º -4º +10º IDLE UP -10º 0º +10º +14º -14º 0º AUTOROTATION The total pitch range of the is approximately 30 degrees depending the rotor head settings you have done.
  • Page 46 - Check that the main and tail rotor blades are installed correctly. - You are now ready for your first flight with the X-TREME 50 and your next step is the adjustment of your engine. Since this depends on the fuel, plug...
  • Page 47 STEP 9-5 FINAL SERVO AND RADIO SETUP Caution: Be sure to maintain a safe distance of at least 5 meters from the helicopter when observing the track of the main rotor disc. Blade tracking ensures that both of the main blades are set to the same pitch angle, and if done correctly will make your helicopter turbine smooth in operation.

  • Page 48: Please Read Before Flight

    PLEASE READ BEFORE FLIGHT is the perfect choice for intermediate and expert level R/C Helicopter pilots, however, Radio controlled models such as this can crash and cause serious damage to people and property if not properly assembled and flown with great care. Please exercise the highest levels of caution and safety when operating this model and if you are a beginner, please seek help from an experienced RC heli pilot.

  • Page 49: Spare Parts List

    SPARE PART LIST XT61075 25mm 20mm 70mm XT60729A XT60967 XT61104 XT60869 XT61122 XT60729B HN61106 XT61109 HN61107 HN70504 XT80179 HN81046 XT61105 HN70510 XT61101 HN81047 HN60013 HN80071 XT70508 HN80102 XT60868 XT61110 HN80004 HN60249M XT61115 XT60729 HN70010 HN70700 HN70184 XT60729B HN70002 XT60729A XT61110...
  • Page 50 SPARE PART LIST HN60733 HN60522 HN70020 HN80065 HN80039 XT61082B HN70496 HN80014 XT61116A HN70038 XT60028 XT61081 Xt61085 XT61082A HN80013 HN60005 HN80005 HN60157 HN80020 XT70506 XT60025 HN61111 HN60523 HN61088 HN70082 XT60025A HN60007...
  • Page 51 SPARE PART LIST HN80004 XT60819 HN60547M HN70201 HN70310 XT8022 HN60851 XT60817 HN70018 XT8009 XT60401 XT8041 XT8041 XT8013 HN70112 HN70034 XT8042 UP1003 XT60402 HN61059 XT61084 XT60339 HN61066 XT60341 XT60340 XT61121 XT8020 XT8040 60mm 25mm 30mm XT31123...
  • Page 52 SPARE PART LIST XT8045 HN60722 HN70300 HN60721 HN60011 HN70474 HN70277 XT8044 XT8044 XT61116M XT61116RL XT61090 HN80033 HN70001 HN61074 XT8036 HN80033 XT8039 HN61091 HN80181 HN61113 HN61112...
  • Page 53 SPARE PART LIST XT80078 XT60055 HN80004 XT70027 XT60862 HN60056 HN61117 HN60528 XT60050 HN81019 XT60054 HN70002 XT8042 XT8038 XT8020 HN60222 XT61120 HN80131 XT60866 XT8040 XT8038 XT83069 XT60044 XT83023 HN70224 XT83035 XT8036 XT61118 HN83091 XT8039...
  • Page 54 SPARE PART LIST XT82276 X-TREME 50 XT0001 MANUAL XT0002...

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