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Xray RX8 Instruction Manual
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Xray RX8 Instruction Manual

1/8-scale nitro car
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Summary of Contents for Xray RX8

  • Page 2: Before You Start

    RC model racing cars. This is not a toy; it is a precision racing reason you decide the RX8 is not what you wanted or expected, do not continue any further. Your hobby dealer model.
  • Page 3 • Clean all ball-bearings so they move very easily and freely. Therefore we ask you, if at all possible, to purchase XRAY products at your hobby dealer and give them your • Tap or pre-thread the plastic parts when threading screws.

  • Page 4: Equipment Required

    To ensure that you always have access to the most up-to-date version of the XRAY Silicone Shock Oil XRAY Set-up Book, XRAY will now be offering only the digital online version at our Web site at www.teamxray.com. By offering this online version instead of including a hardcopy printed version in kits, you will always be assured of having the most current updated version.
  • Page 5 1. FRONT ONE-WAy & REAR SOLID AXLE 968120 345148 980324 345070 345110 345010 968120 345024 345800 968140 345070 345000 FRONT ONE-WAY - SET 345110 REAR SOLID AXLE SHAFT 345010 FRONT ONE-WAY AXLE 345148 COMPOSITE REAR SOLID AXLE PULLEY 48T 345024 COMPOSITE FRONT ONE-WAY AXLE PULLEY 24T 345070 FRONT ONE-WAY AXLE OUTDRIVE ADAPTER - HUDY SPRING STEEL™...

  • Page 6: Rear Suspension

    2. REAR SUSPENSION 306219 345310 342630 901316 962121 980322 343130 901306 343310 901410 343150 303241 342070 343285 941218 962121 342070 962120 337250 343120 941218 902308 902308 343110 345360 337253 901303 345280 901306 HEX SCREW SB M3x6 (10) 343150 C. REAR UPPER CAMBER LINK BALL JOINT 5.8MM - SHORT & LONG (2+2) 303241 BALL UNIVERSAL 5.8 MM HEX (4) 901316...
  • Page 7 1+1+0.5 To ensure that you always have access to the most up-to-date version of the XRAY Set-up Book, XRAY will now be offering only the digital online version at our Web site at INITIAL SETTING REAR TRACK WIDTH...
  • Page 8 2. REAR SUSPENSION 342316 345450 302080 343050 903308 347320 344050 345320 342317 342316 940508 903308 345100 344180 941218 940815 342070 342180 344040 901303 343020 981208 343010 940508 344130 357210 343055 342317 902318 901405 965090 344110 341100 903416 344140 345820 903412 345510 903412 302080...
  • Page 9 2. REAR SUSPENSION 965090 ASSEMBLED VIEW 941218 BB 12x18x4 NOTE ORIENTATION BEARING Both bushings must be in same position BEARING REAR BELT TENSION ADJUSTMENT INITIAL POSITION Place tab in this notch TO TIGHTEN REAR BELT TO LOOSEN REAR BELT Rotate BOTH rear composite bushings in Rotate BOTH rear composite bushings INITIAL SETTING arrow direction...
  • Page 10 2. REAR SUSPENSION 903308 SFH M3x8 903412 SFH M4x12 4x12 4x16 903416 4x12 SFH M4x16 4x16 901303 SB M3x3 BEARING 903308 SFH M3x8 981208 P 2x8 DETAIL 940508 BB 5x8x2.5 Use 0mm suspension holders for initial assembly INITIAL SETTING COMPOSITE SET OF BUSHINGS Tighten fully REAR CAMBER RISE setscrew M3x6...
  • Page 11 2. REAR SUSPENSION 902314 902312 344050 341360 902314 901303 343070 901305 343080 940508 902310 901303 341380 343070 903308 302080 343428 902310 333450 341330 303210 343030 347330 333460 902310 341370 302291 302080 CASTER CLIPS SET 4+3+2+1 MM (2) 343070 BELT TENSIONER SET 902312 HEX SCREW SH M3x12 (10) 302291 STEEL STEERING BUSHING (2+2) 343080 GRAPHITE SHOCK TOWER REAR...
  • Page 12 2. REAR SUSPENSION NOTE ORIENTATION 901303 SB M3x3 3x14 3x12 902312 902314 SH M3x12 SH M3x14 Only tighten setscrew enough to remove excessive free play; anti-roll bar must still move freely. DETAIL 903308 SFH M3x8 DETAIL INITIAL 902310 POSITION SH M3x10 REAR BODY MOUNT Distance according to 901305...

  • Page 13: Rear Transmission

    3. REAR TRANSMISSION 345581 345545 COMPOSITE 2-SPEED GEAR 45T (2nd) OPTION 901305 345546 COMPOSITE 2-SPEED GEAR 46T (2nd) STANDARD 965070 345541 345547 COMPOSITE 2-SPEED GEAR 47T (2nd) OPTION 345838 345548 COMPOSITE 2-SPEED GEAR 48T (1st) OPTION 345800 983404 345549 COMPOSITE 2-SPEED GEAR 49T (1st) STANDARD 345550 COMPOSITE 2-SPEED GEAR 50T (1st) OPTION...
  • Page 14 3. REAR TRANSMISSION SHIfT-POINT ➎ SCREW 901305 SB M3x5 ➍ SHOE-GAP SETSCREW ➊ ➌ ➋ 902314 SH M3x14 Setscrews must NOT ➋ protrude 983404 RP 4x4 NOTE ORIENTATION ➊ Top of screw head should be level with hole bottom edge ➍...

  • Page 15: Front Suspension

    4. FRONT SUSPENSION 342130 901306 901303 342110 901306 345230 980262 342210 980320 941218 901408 342220 901308 345220 345210 941218 342410 961032 962121 902320 337253 342070 345260 901408 342070 901303 342440 901308 962121 342450 962120 902320 345280 337250 901308 337250 STEEL PIVOT BALL 8.4 MM (2) 345210 FRONT WHEEL AXLE - HUDY SPRING STEEL™...
  • Page 16 4. FRONT SUSPENSION 901303 SB M3x3 Centered DETAIL 980320 P 3x20 Tighten gently Tighten fully ASSEMBLED VIEW 2.6mm 1.8mm FRONT CAMBER 901308 901408 SB M3x8 SB M4x8 NOTE ORIENTATION 3x20 1. Pre-thread mount with the setscrew. 2. After anti-roll bar is inserted, install 961032 902320 S 3.2...
  • Page 17 4. FRONT SUSPENSION 342030 342010 342315 902310 302080 342040 345430 941218 347210 337310 903412 342070 901408 342080 345000 902310 342180 903412 342020 342315 COMPOSITE FRONT UPPER SUSP. ECCENTRIC BUSHING (4) 302080 COMPOSITE CASTER CLIPS SET 4+3+2+1 MM (2) 345430 PUR® REINFORCED DRIVE BELT FRONT 6.0 x 204 MM 337310 PIVOT PIN (2) 347210...
  • Page 18 4. FRONT SUSPENSION 902310 SH M3x10 INITIAL SETTING COMPOSITE SET OF BUSHINGS Use 0mm suspension holders for initial assembly WHEELBASE FRONT ROLL CENTER FRONT CAMBER RISE CASTER Tighten fully 901408 SB M4x8 902310 SH M3x10 fRONT ANTI-ROLL BAR Each anti-roll bar blade has a hex hole at its end. Use a 1.5mm hex wrench to adjust the blades.
  • Page 19 5. FRONT TRANSMISSION 345858 345800 965050 965050 346230 940613 901408 901408 940613 345720 903308 903310 903310 343070 981262 950510 345440 343070 902312 345710 345800 345800 965050 345888 345889 343070 BELT TENSIONER SET 901408 HEX SCREW SB M4x8 (10) 345440 PUR® REINFORCED DRIVE BELT SIDE 6.0 x 432 MM 902312 HEX SCREW SH M3x12 (10) 345710...
  • Page 20 5. FRONT TRANSMISSION STEP DETAIL 965050 NOTE 981262 ORIENTATION P 2.5x12 Use the belt pulley cover 29T NOTE ø6mm ORIENTATION STEP DETAIL 13.4mm GEARING Tighten gently 901408 SB M4x8 903310 SFH M3x10 Tighten gently 903308 SFH M3x8 NOTE ORIENTATION THREAD LOCK BEARING 902312...
  • Page 21 6. STEERING 903312 342500 940508 301159 342510 902308 34251 0 333240 902310 333240 352648 902308 332660 352648 342500 970100 332660 333240 940508 902308 903310 301159 ALU COUNTERSUNK SHIM (4) 902308 HEX SCREW SH M3x8 (10) 332660 COMPOSITE STEERING & SERVO BALL JOINT 5.8 MM (4+2) 902310 HEX SCREW SH M3x10 (10) 333240...
  • Page 22 6. STEERING Follow the TECH TIP on page 31 to install the pivot balls 86.3mm THREAD LOCK NOTE 902308 ORIENTATION SH M3x8 NOTE ORIENTATION BEARING 903310 SFH M3x10 BEARING 940508 BB 5x8x2.5 STEP DETAIL ➋ ➊ THREAD LOCK 902308 SH M3x8 THREAD LOCK FRONT TOE IN...
  • Page 23 7. FUEL TANK & ELECTRONICS 336030 902312 306310 902308 346190 Battery Pack Throttle servo (not included) (not included) 902308 907206 336120 346150 902312 346181 902306 346182 336000 903306 902308 902306 903308 Personal Transponder (not included) 336120 902306 346110 336120 902310 338685 902316 332660...
  • Page 24 7. FUEL TANK & ELECTRONICS 1.5mm 901312 Follow the TECH TIP on page Note the 90° angle difference between SB M3x12 31 to install the pivot balls the ball joints Thin Thick Use appropriate inserts for your servo, to ensure the 902308 servo has minimal play (movement) in the servo holder.
  • Page 25 Route servo and transponder leads into box and seal with silicone sealant. Use an appropriate receiver battery pack Battery (not included) The RX8 accommodates standard 5-cell receiver packs or optional micro-size packs. Use tape to mount the receiver battery pack to the lower holder ASSEMBLED VIEW (not included).
  • Page 26 Shim (for adjusting flywheel distance) 964073 S 7x10x0.2 Use the flywheel collar that comes with your engine, or use optional XRAY collars: #338540 – XRAY flywheel collar for Ø6mm crankshafts #338541 – XRAY flywheel collar for Ø7mm crankshafts 964074 S 7x10x0.3 964075...
  • Page 27 (approximately 0.7~1.0mm) SCH M3x12 NOTE ORIENTATION ➋ ➊ To tighten the 20T pinion gear use the optional To tighten the 17T pinion gear use the optional #349901 XRAY RX8 Pinion Tool (19~21T; 16~18T). #349901 XRAY RX8 Pinion Tool (19~21T; 16~18T).
  • Page 28 8. ENGINE & CLUTCH Most popular engines have a 37.8mm distance between THREAD LOCK mounting holes. However some engines (for example, all screws Picco) have a smaller distance (37mm). If your engine ➋ has the smaller distance between mounting holes, you need to enlarge the mounting holes (for example, make each hole ø0.2~0.4mm larger) to allow the engine to fit the engine mounts properly.

  • Page 29: Shock Absorbers

    308316 COMPOSITE SHOCK BALL JOINT - OPEN (4) 308321 ALU XRAY SHOCK BODY (2) 308326 ALU CAP FOR XRAY SHOCK BODY #308321 (2) 308330 COMPOSITE FRAME SHOCK PARTS 4-STEP SHOCK OIL ADJUSTABLE PISTONS Carefully remove the shock pistons from the frame,...
  • Page 30 9. SHOCK AbSORbERS (2) O-RING 971031 INITIAL SETTING (1) O-RING O 3.1x1.6 CHOICE THIN SHIM THIN SHIM THICK SHIM SHOCK OIL THIN SHIM 970121 O 12.1x1.6 CUTAWAY VIEW SHOCK OIL Be careful not to cross-thread ➊ the collar on the shock body. ➋...
  • Page 31 9. SHOCK AbSORbERS TIGHTEN ➊ ➋ ➌ RELEASE FULLY 2-3 turns 100% REBOUND CHECK It is very important to push the shock shaft into the shock body slowly otherwise air can come into the shock body which would create bubles. REBOUND ADJUSTMENT AFTER THE SHOCK IS ASSEMBLED YOU HAVE TO SET THE SHOCK REBOUND.

  • Page 32: Final Assembly

    10. FINAL ASSEMbLy 341320 349400 306219 902310 902308 349400 341210 903410 960040 341200 902306 336401 336400 901303 902310 901303 336400 902306 336401 336401 902310 358950 Servo screw not included 903412 336401 336400 306219 COMPOSITE SET OF SERVO SHIMS (4) 902308 HEX SCREW SH M3x8 (10) 336400 THROTTLE LINKAGE SET...
  • Page 33 10. FINAL ASSEMbLy 902308 SH M3x8 306219 SHIM 3x6x3 ASSEMBLED VIEW REAR SHOCK INITIAL POSITION DETAIL 902310 3x10 SH M3x10 INITIAL POSITION 4x10 4x10 The front body post has two positions - FRONT and REAR. 903410 The distance difference between these two positions is SFH M4x10 2mm.
  • Page 34 10. FINAL ASSEMbLy 902306 SH M3x6 Servo screw not included ASSEMBLED VIEW Tires (not included) Cut 2 pieces of silicone tubing and install as follows: • pressure line - between exhaust pipe and fuel tank cap • fuel line - between fuel tank and carburetor...
  • Page 35 CARb LINKAGE ADJUSTMENT NEUTRAL (IDLE) Approx. 0.5mm IDLE ADJUSTMENT SCREW Do not allow carburetor to close to less than 0.5mm. Turn on transmitter and receiver and set the throttle servo trim to the neutral position. Adjust the idle adjustment screw on the carburetor to open approx. 0.5-1mm. Adjust both collars on the carb and brake linkages accordingly.