Xray XB808 Instruction Manual
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Xray XB808 Instruction Manual

Xray 1/8 nitro buggy kit
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Summary of Contents for Xray XB808

  • Page 2: Safety Precautions

    Phone: (800) 519-7221 * (214) 744-2400 many other goodies. We pride ourselves on taking excellent care of our customers. Fax: +421-32-7401109 Fax: (214) 744-2401 You can join thousands of XRAY fans and enthusiasts in our online community at: Email: info@teamxray.com Email: xray@rcamerica.com www.teamxray.com Failure to follow these instructions will be considered as abuse and/or neglect.
  • Page 3 • Make sure that chassis screws do not protrude from the chassis. Please support your local hobby shop. We at XRAY Model Racing Cars support all local • For the best performance, it is very important that great care is taken to ensure the hobby dealers.

  • Page 4: Symbols Used

    SYMBOLS USED Part bags used Assemble in the Assemble left and Assemble front Pay attention Assemble as Apply instant Apply oil Apply grease Apply specified order right sides the and rear the same here many times glue threadlock same way as specified (here twice) Cut off shadded...
  • Page 5 HUDY drive pins wear. Drive Pin Replacement Tool. #106050. GRAPHITE PARTS PROTECTION Follow this tech tip to protect the graphite parts. Protect all XB808 Fine sandpaper Graphite Parts: Use fi ne sandpaper Apply CA glue to all edges to sand smooth the of the graphite parts.
  • Page 6 35 5043 FRONT/REAR DIFF LARGE BEVEL GEAR 43T - HUDY STEEL 96 4060 WASHER S 6x18x0.2 (10) 35 5062 XB808 FRONT/REAR DIFF OUTDRIVE ADAPTER (2) HUDY SPRING STEEL™ 97 1060 SILICONE O-RING 6x1.5 (10) 35 5080 DIFF PIN (2) 98 0212 PIN 2x11.6 (10)

  • Page 7: Very Important

    FRONT & REAR DIFFERENTIALS 940814 Graphite Grease BB 8x14x4 Graphite Grease (HUDY #106210) (HUDY #106210) STEP DETAIL 964060 S 6x18x0.2 Use HUDY Ball-Bearing Grease for servicing: #106220 - Standard #106221 - Extra #106222 - Premium 971060 O 6x1.5 980212 P 2x11.6 VERY IMPORTANT! Use these silicone oils included in the kit for initial settings: Front diff:...

  • Page 8: Center Differential

    355080 971060 940814 355054 903312 352070 355070 35 2070 XB808 COMPOSITE BEARING HUB FOR DIFF (4) 90 3312 HEX SCREW SFH M3x12 (10) 35 5011 XB808 CENTRAL DIFFERENTIAL - SET 94 0814 HIGH-SPEED BALL-BEARING 8x14x4 BLUE COVERED (2) 35 5020...
  • Page 9 CENTER DIFFERENTIAL 940814 BB 8x14x4 Graphite Grease Graphite Grease (HUDY #106210) (HUDY #106210) STEP DETAIL Use HUDY Ball-Bearing 964060 Grease for servicing: S 6x18x0.2 #106220 - Standard #106221 - Extra #106222 - Premium 971060 O 6x1.5 980212 P 2x11.6 VERY IMPORTANT! Use the following silicone oil included in the kit for initial setting: Center diff: 7000cSt...

  • Page 10: Front Transmission

    35 2002 XB808 DIFF BULKHEAD BLOCK SET FRONT/REAR 90 1303 HEX SCREW SB M3x3 (10) 35 2092 XB808 GRAPHITE FRONT SHOCK TOWER - CNC MACHINED 4 MM 90 2305 HEX SCREW SH M3x5 (10) 35 5111 XB808 PINION GEAR 10T...

  • Page 11: Rear Transmission

    35 2002 XB808 DIFF BULKHEAD BLOCK SET FRONT/REAR 90 1303 HEX SCREW SB M3x3 (10) 35 3092 XB808 GRAPHITE REAR SHOCK TOWER - CNC MACHINED 3.5 MM 90 2305 HEX SCREW SH M3x5 (10) 35 5111 XB808 PINION GEAR 10T...

  • Page 12: Rear Suspension

    35 3114 XB808 COMPOSITE REAR LOWER SUSPENSION ARM 90 2318 HEX SCREW SH M3x18 (10) 35 3302 XB808 COMPOSITE REAR LOWER SUSP . HOLDERS SET 90 3308 HEX SCREW SFH M3x8 (10)) 35 3371 XB808 SET OF COMPOSITE LOWER ARM SHIMS 90 9372 SCREW PHILLIPS SS 3.5x22 (10)
  • Page 13 REAR SUSPENSION Check for free REAR ARM movement 901408 SB M4x8 960040 N M4 Do not overtighten the self-locking nut. Overtightening may result in suspension binding. If the suspension arm does not move freely use a HUDY Arm Reamer to size the holes of the arms (HUDY #107634) Downstop screw ARM REAMER...
  • Page 14 355250 35 1301 XB808 BODY POSTS 35 7331 XB808 REAR LOWER OUTER PIVOT PIN SCREW 3MM (2) 35 2631 ADJ. TURNBUCKLE M5 L/R 64 MM - HUDY SPRING STEEL (2) 35 3131 XB808 REAR UPPER INNER CAMBER LINK BALL JOINT (2)
  • Page 15 REAR SUSPENSION Follow the TECH TIP on page 5 Follow the TECH TIP on page 5 to install the pivot balls to install the pivot balls CAMBER LEFT RIGHT THREAD THREAD LEFT THREAD RIGHT THREAD DETAIL Right thread Left thread Left thread Right thread 37.5 mm...

  • Page 16: Front Suspension

    XB808 COMPOSITE FRONT LOWER SUSP . HOLDERS SET 90 1408 HEX SCREW SB M4x8 (10) 35 2317 XB808 STEEL SUSP . HOLDER - FRONT - LASER CUT 90 2318 HEX SCREW SH M3x18 (10) 35 2460 PIVOT BALL 5.8 (10)
  • Page 17 FRONT SUSPENSION FRONT ARM 901408 Do not overtighten the self-locking SB M4x8 nut. Overtightening may result in suspension binding. 960040 N M4 If the suspension arms do not move freely, use a HUDY Arm Reamer resize the holes. ARM REAMER (HUDY #107634) Downstop screw DETAIL...
  • Page 18 XB808 CVD DRIVE AXLE - HUDY SPRING STEEL™ 98 0263 PIN 2.5x13 (10) 35 5221 XB808 CVD UNIVERSAL DRIVE SHAFT - HUDY SPRING STEEL™ 98 0317 PIN 3x17 (10) 35 5237 XB808 CVD DRIVE SHAFT COUPLING - HUDY SPRING STEEL™...
  • Page 19 FRONT SUSPENSION RIGHT ASSEMBLY LEFT ASSEMBLY 902418 SH M4x18 DO NOT Check for free movement OVERTIGHTEN DO NOT OVERTIGHTEN DETAIL LEFT THREAD LEFT RIGHT THREAD RIGHT THREAD Use tools to tighten as shown THREAD Follow the TECH TIP on page 5 Follow the TECH TIP on page 5 to install the pivot balls to install the pivot balls...

  • Page 20: Front & Rear Assembly

    960030 351200 903412 903312 903412 351102 35 1102 XB808 ALU CHASSIS - HARDCOATED SWISS 7075 T6 (3MM) 90 2312 HEX SCREW SH M3x12 (10) 35 1200 FRONT & REAR BUMPER - V2 90 3312 HEX SCREW SFH M3x12 (10) 35 3088...
  • Page 21 FRONT & REAR ASSEMBLY 902312 SH M3x12 SH 3x12 903312 SFH M3x12 960030 N M3 SFH 3x12 903412 SFH M4x12 DETAIL...
  • Page 22 NUT M3 (10) 35 2664 XB808 COMPOSITE STEERING BALL JOINT 6.8MM (2) 96 1032 WASHER S 3.2 (10) 35 2665 XB808 COMPOSITE RELIEF STEERING BALL JOINT 6.8MM (2) step step Follow the TECH TIP on page 903308 5 to protect graphite parts...
  • Page 23 STEERING 3x10 step step 903310 SFH M3x10 3x10 3x14 3x10 903312 903314 SFH M3x12 SFH M3x14 902310 903410 SH M3x10 SFH M4x10 90238 SH M3x18 960030 N M3 4x10 961032 SFH 3x12 S 3.2 Follow the TECH TIP on page 5 Follow the TECH TIP on page 5 to install the pivot balls to install the pivot balls...
  • Page 24 XB808 CENTER DIFF MOUNTING PLATE SET 90 1304 HEX SCREW SB M3x4 (10) 35 4041 XB808 ALU BRAKE CAM POST & ROD (2+2) HARD COATED 90 2316 HEX SCREW SH M3x16 (10) 35 4058 XB808 COMPOSITE CENTER DIFF MOUNTING PLATE...
  • Page 25 CENTER DIFF & BRAKE 901304 SB M3x4 903308 SFH M3x8 NOTE ORIENTATION OF ALL PARTS 903308 SFH M3x8 Before inserting 3x30 long screws, loosen the four flat-head screws in the upper plate by 1/2 turn. Tighten all screws after assembly. DETAIL 902330 SH M3x30...
  • Page 26 18T (OPTION) 35 1151 XB808 CHASSIS SIDE GUARDS L+R 90 1405 HEX SCREW SB M4x5 (10) 35 8526 XB808 CLUTCH BELL 16T WITH OVERSIZED 5x12x4MM BALL-BEARINGS 90 2308 HEX SCREW SH M3x8 (10) 35 8531 FLYWHEEL 90 2316 HEX SCREW SH M3x16 (10)
  • Page 27 DETAIL 911410 SHF M4x10 EXTREMELY IMPORTANT It is very important that your XB808 has properly-adjusted gear mesh. Adjust the gear mesh so there is adequate (or slightly larger) space between the spur gear and clutchbell DETAIL teeth. Adjust the gear mesh by sliding the engine mounts in the slots of the chassis.

  • Page 28: Radio Case

    HEX SCREW SH M3x10 (10) 35 2670 SERVO BALL JOINT 5.8MM (4) 90 2312 HEX SCREW SH M3x12 (10) 35 6001 XB808 RADIO CASE SET 90 3308 HEX SCREW SFH M3x8 (10) 35 6050 BATTERY CABLE WITH SWITCH (OPTION) 90 3310...
  • Page 29 RADIO CASE DETAIL step step 3x10 Ensure the throttle servo is not Follow the TECH TIP on page 902308 SH M3x8 touching the chassis. If necessary 5 to protect graphite parts use shims to alter the height of the servo. NOTE 903308 ORIENTATION...

  • Page 30: Shock Absorbers

    XB808 COMPOSITE SHOCK PARTS 35 8150 XB808 ALU SHOCK BODY ADJ. NUT (2) BAGS 35 8015 XB808 COMPOSITE SET OF SHIMS FOR SHOCKS 1 & 2.5 MM 35 8168 XB808/XT8 FRONT SHOCK SHAFT (2) 35 8038 XB808 COMPOSITE SHOCK 6-HOLE PISTON SET 35 8184 XRAY XB808 FRONT SPRING SET C=0.75 - SILVER (2)
  • Page 31 SHOCK ABSORBERS EXTREMELY IMPORTANT FRONT SHOCKS SHORT SHOCK ROD SHORT SHOCK BODY 1.5mm PISTON 970180 O 18x1.8 REAR SHOCKS LONG SHOCK ROD INCORRECT CORRECT LONG SHOCK BODY 1.3mm Do not push the shock rod straight Twist the shock rod through the PISTON through the lower shock body lower shock body assembly.
  • Page 32 SHOCK ABSORBERS FRONT SHOCK PRELOAD FRONT SHOCKS REAR SHOCKS SHORT FRONT SHOCKS LONG REAR SHOCKS REAR SHOCK PRELOAD SHORT SPRING LONG SPRING IMPORTANT! IMPORTANT! Both front shocks Both rear shocks must be the same must be the same SPRING RATE overall length.

  • Page 33: Final Assembly

    355260 (not included) 902319 35 3510 REAR WING 35 9703 XRAY XB808 BODY FOR 1/8 OFF ROAD BUGGY 35 5260 WHEEL NUT - HARD COATED (2) 35 9800 WHEELS STARBURST - WHITE (4) (OPTION) 35 6200 BRAKE/THROTTLE ARMS & SERVO ARMS - SET...
  • Page 34 FINAL ASSEMBLY 902318 M3x18 INITIAL POSITIONS UPPER UPPER UPPER UPPER 3x25 LOWER LOWER LOWER LOWER 902319 902325 SH M3x18 SH M3x25 LEFT thread STANDARD INITIAL POSITIONS M3x18 screw 960030 N M3 REAR SHOCKS (LONG) On the rear left arm use the SILVER M3x18 3x18...
  • Page 35 FINAL ASSEMBLY XRAY STARBURST WHEELS XRAY REAR WING #353510 White (STANDARD) #359800 White (OPTION) #353515 Black (OPTION) #359806 Orange (OPTION) #353516 Orange(OPTION) #359808 Pink (OPTION) #353518 Pink (OPTION) #359809 Yellow (OPTION) #353519 Yellow (OPTION) DETAIL 903312 SFH M3x12 960030 N M3...

  • Page 36: Throttle Linkage Adjustment

    THROTTLE LINKAGE ADJUSTMENT NEUTRAL (IDLE) ADJUST INDIVIDUAL LINKAGES SEPARATELY TO AVOID INTERFERING WITH THE OPERATION OF THE OTHERS ~1mm 0.5mm ENGINE IDLING IDLING ADJUSTMENT SCREW. Use to adjust the idle setting of the carburetor. Do not allow carburetor to • Turn on the transmitter and receiver and set the engine control servo trim to the neutral position. close to less than 1mm.
  • Page 37 MAINTENANCE ENGINE OPERATION PREPARING TO OPERATE THE ENGINE • Never modify the engine or muffler. • For proper engine break-in, please refer to the manual that came with the engine. • Confirm the position of needle and idling before running. Be sure to run a new engine smoothly. •...

  • Page 38: Troubleshooting Guide

    CLUTCH BEARINGS To prolong the lifespan of the clutch bearings, they must be regularly cleaned and lubricated (preferably after each run) using a high-quality grease such as HUDY Bearing Grease. However, after some time the clutch bearings must be replaced with new ones. HUDY #106230 RECOMMENDED PRODUCTS •...
  • Page 39 TIGHT SHIMS IN FRONT OF UPRIGHT MEDIUM OIL / cST SOFT REBOUND / PISTONS HOLES SHIM UNDER STEERING PLATE SIZE OTHER FRONT REAR TIRES TYPE INSERTS WHEELS ENGINE TYPE MANIFOLD MUFLER #107717 GAUGE PLUG FUEL BODY TYPE VER. 5.0 ©XRAY...
  • Page 40 PHONE: 214-744-2400, FAX: 214-744-2401, xray@rcamerica.com PHONE: 214-744-2400, FAX: 214-744-2401, xray@rcamerica.com ALL RIGHTS RESERVED. © XRAY. ALL ARTWORK & DESIGN BY XRAY ALL RIGHTS RESERVED. © XRAY. ALL ARTWORK & DESIGN BY XRAY 5 8 1 7 0 3 9 1 0 4 5 9...

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