RJX Hobby X-50EP Instruction Manual

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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

9:1:4.7 (others Optional)

2900g - 3000g (without Battery)

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Summary of Contents for RJX Hobby X-50EP

Page 1: Technical Data
Technical Data: 1260 mm Overall Length 390 mm Overall Height 210 mm Overall Wide 1339 mm Main Rotor Diameter 233 mm Tail Rotor Diameter 9:1:4.7 (others Optional) Gear Ratio 2900g - 3000g (without Battery) 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 - A30 6. Servo Installation S1-S4 7. Servo Adjustment S5-S6 Rh1-Rh2 8. Rotor Head Setup R1-R5 9. Final Servo and Radio Setup 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 Brushless Motor (Outrunner) (depending on Servos) 8-12S Li-Po Batterie Pack...
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 Ball Link Tool Ball Link Driver...
Page 6 STEP 1-1 Landing Skid Support Assembly LANDING SKID MOUNTS inside the bag of the MAIN FRAME USE THREADLOCK Landing Skid Mount A Landing Skid Mount B Bottom Plate Mounting Block M3x12 NOTE:Assemble 2 units. View of the complete Assembly. STEP 1-2B Tail Drive Pinion Gear Assembly (Belt Version) IMPORTANT: USE THREADLOCK One end of the BB Block is machined with a flange to retain the...
Page 7 STEP 1-2TT Tail Drive Pinion Gear Assembly (TT Version) USE THREADLOCK IMPORTANT: Start assembly with the OUTPUT SHAFT. This step is preassembled.PLEASE CHECK AND ADD THREAD LOCK Tail Drive Pinion TT Gear Box View of the complete Assembly. 5x7x1 Washer Check that the gearmesh is correctly (if necesary add a 0.2mm Nylon Washer) and 19T Delrin Bevel Gear...
Page 8 STEP 1-4 Canopy Stands BREAKOFF are inside the bag of the MAIN FRAME USE THREADLOCK 32mm Crossmember Breakoff M3x8 Socket Head Bolt View of the completed Assembly NOTE: Assemble 4 sets STEP 1-5 Swash Control Lever Assembly CONTROL LEVER inside the bag of the MAIN FRAME USE THREADLOCK CAUTION: Flange facing upward...
Page 9 STEP 1-6 Rear Swash Control Assembly USE THREADLOCK Joinball 4mm Ball Arm Nick Arm M2x6 Socket Head Bolt Rear Swash Lever View of the completed Assembly STEP 1-7 Front Tail Arm Assembly USE THREADLOCK CAUTION: M2x10 Socket Head Bolt Do NOT over tighten the M3x20 bolts to avoid breaking the bearings.
Page 10 STEP 1-8 Battery Tray Assembly BATTERY TRAY inside the bag of the MAIN FRAME USE THREADLOCK M3x8 Countersunk Head Bolt Special Crossmember Battery Tray View of the completed Assembly from both side...
Page 11 STEP 2-1 Lower Main Frame Assembly USE THREADLOCK Lower Frame Bottom Plate Lower Frame M3x8 M3x8 M3x10 M3x10 View of the completed Assembly M3x8 M3x8 60mm Crossmenber Assambled in Step 1-1 STEP 2-2 Upper Main Frame Assembly CAUTION: USE THREADLOCK The upper main frame sides are NOT the same.
Page 12 STEP 2-3 Upper Main Frame Assembly USE THREADLOCK Assembled in Step2-2 Standoff Finish Cap M3x10 M3 Lock Nut Left Upper Frame Finish Cap IF BUILD AS TT VERSION Use the Assembly from STEP1-2TT Standoff M3x8 (2) Assembled in Step1-2B View of the completed Assembly Assembled in Step1-1 STEP 2-4 Upper Main Frame Assembly USE THREADLOCK...
Page 13 STEP 2-5 Upper Main Frame Assembly USE THREADLOCK 4x6x1 Washer Nick Arm Swashguide M4x4 M4x4 Set Screw Set Screw ( Do not use Threadlock for later adjustment) F4x8x3 Bearing CCPM Arm CCPM Shaft F4x8x3 Bearing M4 Lock Nut M4 Lock Nut M3x8 M3 Lock Nut M3x8...
Page 14 STEP 2-7 Main Frame Assembly USE THREADLOCK M3x25 12mm Spacer View of the completed Assembly Finish Cap M3x25 Assempled in Step2-1 12mm Spacer Finish Cap STEP 2-8 Landing Skid Attachment M3x18 View of the completed Assembly M3x18 Skids 3x5x3 Plastic Washer(4) M3x4 Set Screw Landing Skid Brace M3 Lock Nut...
Page 15 STEP 3-1 Drive Gear Instalation USE THREADLOCK M4x4 Set Screw Pinion M4x10 Motor Mount M4x10 View of the completed Assembly Brushless Motor Note: Do not tighten the two M4x10 screws. On some motors you can use up to 4 Set Screws to fix the Pinion. Depending on the KV of the Brushless Motor the Pinion and/or the Maingear must be changed to reach a good ratio.
Page 16 STEP 3-3 Drive Gear Instalation USE THREADLOCK Main Shaft NOTE: 4mm Hole IMPORTANT: Insure the bigger hole is inserted. When securing the main shaft, pull it upwards through the main bearings to eliminate any freeplay. Next press Main Shaft Collar the main shaft collar firmly onto the upper bearing block and fix with threadlock the four M4x4 set screws.
Page 17: Assembly
STEP 4-1 SWASHPLATE ASSEMBLY USE THREADLOCK Swash Guide Pin 9mm Ballarm Jointball View of the completed Assembly Jointball Spacer 2x4x2,75 M2x10 Socket Head Bolt STEP 4-2 WASHOUT ASSEMBLY USE THREADLOCK Washout Base Washout Arm M2x8 Socket Head Bolt View of the completed Assembly Jointball Washout Arm Washer 3x5x1...
Page 18 STEP 4-3 SWASHPLATE / WASHOUT INSTALLATION BOTTOM IMPORTANT: Insure the correct direction View of the completed Assembly NOTE: Attach the two Washoutlinks to the swash plate. STEP 4-4 SEESAW INSTALLATION USE THREADLOCK M3x10 Socket Head Bolt Rotor Stopper Centerhub M4x6 Socket Head Bolt M3x7 Socket Head Bolt and Collar Seesaw...
Page 19 STEP 4-5 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 4-6 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 20 STEP 4-7 MAIN ROTOR HEAD ASSEMBLY NOTE: USE THREADLOCK Assembled in STEP 4-5 Use silicon grease for the dampers. This also needs to be reaplied as part of your on going maintenace (after Spindle 8mm about 30 to 40 flights) to ensure that the dampers not getting dry.
Page 21 STEP 4-9 MAIN ROTOR HEAD ASSEMBLY M3 Lock Nut Jesus Bolt M3x20 Phase Ring Set Screw M3x4 View of the completed Assembly STEP 4-10 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...
Page 22 STEP 4-11 MAIN ROTOR HEAD ASSEMBLY See STEP 4-15 for Rod lenght example Link A NOTE: The size of the linkage rod can variate depending on the head setup. In the STEP 7-2 will be an example of setup with the acording sizes of the Use four short links linkage rods.
Page 23 STEP 4-13 MAIN ROTOR HEAD ASSEMBLY NOTE: Adjust so that A and B are exactly the same distance and secure with the M3x3 Set Screws firmly. IMPORTANT: Center the flybar in the seesaw firmly before securing the control arm. Check to be sure that there is no sideplay in the flybar before securing the control arm.
Page 24 STEP 4-14 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 25 STEP 4-15 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 26 STEP 5-1 TAILCASE ASSEMBLY USE THREADLOCK Pin 14mm Tail Pulley 17T M3x4 Set Screw 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 5-1TT TAILCASE ASSEMBLY (TT Version)
Page 27 STEP 5-2 TAILCASE ASSEMBLY NOTE: USE THREADLOCK Do not over tighten the M3x20 bolts to avoid breaking the bearings. M3x20 Socket Head Bolt M2x6 Socket Head Bolt Jointball Washer 3X5x2 Tail Pitch Control Lever Washer 3X5x2 Washer 3X5x1 View of the completed Assembly M2.5x6 Socket Head Bolt Pitch Lever Supoort STEP 5-2TT TAILCASE ASSEMBLY (TT Version)
Page 28 STEP 5-3 TAILCASE ASSEMBLY USE THREADLOCK NOTE: Check that the Joint ball is working freely and smoothly in the tail pitch control lever. IMPORTANT: Check the pre installed assemply and add red threadlock on the copper sleeve. View of the completed Assembly STEP 5-4 TAILCASE ASSEMBLY USE THREADLOCK M2x10 Socket Head Bolt...
Page 29 STEP 5-5 TAILCASE ASSEMBLY USE THREADLOCK 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 onto the holes from the tailshaft. View of the completed Assembly STEP 5-6 TAILCASE ASSEMBLY USE THREADLOCK 20mm Spacer...
Page 30 STEP 5-6TT Torque Tube ASSEMBLY ca.140mm View of the completed Assembly Torque Tube Outer Bearing Case Inner Bearing Case Rubber Ring Bearing Note: Fix the Torque Tube Bearing Support with EPOXY. Take special Care that no EPOXY get inside the Bearing when assembly.
Page 31 STEP 5-7 TAILCASE ASSEMBLY USE THREADLOCK M3x6 Socket Head Bolt Finish Cap Tailboom Finish Cap M3x10 Socket Head Bolt View of the completed Assembly Vertical Fin STEP 5-7TT TAILCASE ASSEMBLY USE THREADLOCK M3x10 Socket Head Bolt Assembled in Step 5-6 Finish Cap Torque Tube Assembly M3x6 Socket Head Bolt...
Page 32 STEP 5-8 TAIL BOOM INSTALATION (TT+Belt Version) Tailboom NOTE: In case the guides are hard to install. Heat them up and push them over the Tailboom. Guides STEP 5-9 TAIL BRACE ASSEMBLY (TT+Belt Version) M3x12 Socket Head Bolt NOTE: Do NOT yet tighten the M3x12 Socket Head Bolt. There will adjustments handed later with the Tail Brace.
Page 33 STEP 5-10 TAIL BOOM INSTALATION (Belt Version) Loosen this screws to attache the Belt M3x40 Socket Head Bolt Loosen this screws to attache the Belt M3 Lock Nuts NOTE: Introduce the complete Tail Assembly into the Tail Boom Holder as shown in the diagram, Next .The Tail Rotor is pointing upwards.
Page 34 STEP 5-10 TAIL BOOM INSTALATION (TT Version) M3x40 Socket Head Bolt M3 Lock Nuts NOTE: Introduce the complete Tail Assembly into the Tail Boom Holder as shown in the diagram, Next .The Tail Rotor is pointing upwards. place the tail belt on the Front Pulley and check the Tail Belt is not twisted.
Page 35 STEP 5-11 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 36 STEP 5-13 TAIL CONTROL ROD ASSEMBLY NOTE: Fix first on one side the Link than pass the rod through the holes from the guides (front first) Long Link 650mm Rod Long Link...
Page 37: Servo Installation
STEP 6-1 SERVO INSTALLATION IMPORTANT: Depending on servo type used for cyclic, you have to install the servo from inside the frames.When installing from outside the servo horn may touch the canopy. In the diagram below you see how to insert the servo into the frames.
Page 38 STEP 6-3 SERVO INSTALLATION 2,6x12 Selftapping Screws Washer 2,6x7x1 Servo Mounting Plate IMPORTANT: Depending on servo type used you have to install the servo from inside the frames shown in STEP 7-1. STEP 6-4 SERVO INSTALLATION NOTE: For more easier assembly use CA glue to fix the Servo Mounting Plates before installing the servo.
Page 39 STEP 6-5 RECEIVER / GYRO / BATTERY INSTALLATION 1. Install the Battery and Receiver Install the Gyro sensor 4. Install the Gyro Amp or Governor Amp. 6. Install the ESC. 5. Install the the Switch harness 7. Install the Flight Pack. NOTE: a) Be sure to keep all the lead wires.
Page 40 STEP 6-6 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 41 STEP 6-7 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 42 STEP 6-8 LINKAGE CONNECTION 5. TAIL SERVO 90º Use two large links and the 2,6x265mm Rod ca.270mm...
Page 43 STEP 7-1 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 44 STEP 7-2 CANOPY ATTACHMENT NOTE: Put the rubbers grommets for about 3 min. in hot water to insert them more easier in the canopy. Rear Canopy Mount Fixing point NOTE: Use the Thumb Screws to secure the canopy to the body of Front Canopy Mount the helicopter STEP 7-3 MAIN / TAIL BLADE INSTALLATION...
Page 45: Final Servo And Radio Setup
STEP 8-1 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 46 STEP 8-2 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 47 STEP 8-3 FINAL SERVO AND RADIO SETUP 7.Collective Pitch Setup. A Pitch Gauge will be required for this operation MIDDLE HIGH NORMAL -4º +5.5º +10º IDLE UP -10º +10º 0º +14º -14º 0º AUTOROTATION The total pitch range of the is approximately 30 degrees depending the rotor head settings you have done.
Page 48 STEP 8-4 FINAL SERVO AND RADIO SETUP 9. Throttle Curve It is very important to match the throttle curves to those of the main blades. The rotor head should not exceed 2,200 rpm under any circumstances. NOTE: Throttle curves values can vary greatly due to Brushless Motor and ESC combinations and so it will be necessary to fine tune these settings by test flying to achieve the best results.
Page 49 STEP 8-5 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 smooth in operation. Out of Track Adjustment is necessary Caution: Be sure to maintain a safe distance of at least 5 meters from the helicopter when observing the tracking...
Page 50: 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 51: Spare Parts List
SPARE PART LIST 25mm 20mm 70mm XT90-61075 XT60967/8 XT60869/8 XT61104/8 XT61106/8 XT60729B X90-61107 XT61122 XT60729A XT80179 XT61105/8 X90-70504 XT61109 X90-70510 XT61101 XT60868 X90-9006 XT70508 HN60013 HN80071 HN80102 XT61110 HN70008 UP60249 XT61115 XT60729 HN70010 HN70700 HN70184 XT60729B HN70002 XT60729A XT61110 SOME OF THE LISTED SPARE PARTS ARE NOT SOLD SEPERATLY...
Page 52 SPARE PART LIST HN60522 HN70020 EP61082R XT61081 EP61082L XT60028 HN70038 HN70496(5pcs.) XT60072 HN70020 XT90-70506B XT60817 HN70018 UP90-60007 XT90-60523TT A HN60523 XT90-70506TT XT90-50005B XT90-60523TT XT90-50007TT XT90-50005TT XT60819 XT8009 XT8063 HN70310 Xt60025 HN60547M XT61121 XT90-60025A SOME OF THE LISTED SPARE PARTS ARE NOT SOLD SEPERATLY...
Page 53 SPARE PART LIST HN70112 XT8014 XT8041 XT8045 XT61085 HN80014 EP61082U EP61082B EP61082A EP61084 HN70224 HN60339 HN61066 HN70474 EP10T XT90-61090 OPTIONAL: EP12T EP14T HN61074 XT90-61091 EP1000 XT90-61112 OPTIONAL: 740KV RJX Brushless Motor 630KV RJX Brushless Motor XT90-61113 SOME OF THE LISTED SPARE PARTS ARE NOT SOLD SEPERATLY...
Page 54 SPARE PART LIST Complete Tail Rotor: XT90-60528 HN83091 UP60058 HN60056 UP70028 XT90-60222 XT90-83095 XT90-60528A XT90-60050 XT60054 XT60055 Hn61117 XT60862A XT90-60528B XT60862B XT90-81019 XT90-9003A XT70027 (Belt Version) XT90-9003 XT61118 XT80078 XT90-50007TT XT90-81004CTT XT50-83092B XT90-60862TT B XT90-83094 XT90-70027TT (TT Version) XT90-83092A XT90-83093 XT90-70027B TT XT90-60054 XT61120...
Page 55 SPARE PART LIST XT82276Y XT82276O X- 50EP MANUAL CD XT0002/09 SOME OF THE LISTED SPARE PARTS ARE NOT SOLD SEPERATLY...