BEFORE YOU START This is a high-competition, high-quality RC car intended for persons aged 16 years and older with previous experience building and operating RC model racing cars. This is not a toy; it is a precision racing model. This model racing car is not intended for use by beginners, inexperienced customers, or by children without direct supervision of a responsible, knowledgeable adult.
IMPORTANT NOTES – ELECTRICAL • Insulate any exposed electrical wiring (using heat shrink tubing or electrical tape) to prevent dangerous short circuits. Take maximum care in wiring, connecting and insulating cables. Make sure cables are always connected securely. Check connectors for if they become loose. And if so, reconnect them securely. Never use R/C models with damaged wires. A damaged wire is extremely dangerous, and can cause short-circuits resulting in fire.
TOOLS REQUIRED Combination Pliers (HUDY #189020) Allen 1.5mm (#111545 - HUDY EXCLUSIVE Limited Edition) Allen 2.0mm (#112045 - HUDY EXCLUSIVE Limited Edition) Side Cutters (HUDY #189010) Allen Wrench 2.5mm (#112545 - HUDY EXCLUSIVE Limited Edition) Pocket Hobby Knife (HUDY #188981) Ball Allen Wrench 2.5mm (#132545 - HUDY EXCLUSIVE Limited Edition) Allen 3.0mm (#113045 - HUDY EXCLUSIVE Limited Edition) Cross Wrench 3mm (HUDY #107581) Arm Reamer 3.
EQUIPMENT INCLUDED 550cSt (#106356) HUDY Premium Silicone Oils OIL * Kit includes smaller but sufficient amount of oil and grease to build the car. 600cSt (#106361) HUDY Premium Silicone Oils 3.000cSt (#106431) HUDY Premium Silicone Oils 7.000cSt (#106471) HUDY Premium Silicone Oils OIL OIL OIL (HUDY #106240) Air Filter Oil (HUDY #106210) Premium Graphite Grease OIL At the beginning of each section is an exploded view of the parts to be assembled.
1. FRONT & REAR DIFFERENTIALS XRAY BALL-BEARINGS 355065 #930816 8x16x5 GREASE STEEL OPTION #930817 8x16x5 OIL OPTION STEEL 355022 940816 #940816 8x16x5 GREASE RUBBER INCLUDED #940817 8x16x5 OIL RUBBER OPTION 971061 964030 355091 355031 980261 355084 971061 903312 # 355064 FRONT DIFF.
1. FRONT & REAR DIFFERENTIALS 2x F=R IMPORTANT! Use the same diff outdrives on both ends of a diff. ➌ 940816 ➋ BB 8x16x5 Graphite Grease (HUDY #106210) Graphite Grease (HUDY #106210) 964060 DETAIL Use HUDY Ball-Bearing Grease #106220 - STANDARD #106221 - BLUE #106222 - RED ➍ S 6x18x0.2 STEP ➎ DETAIL ➊ ➎ 971061 O 6x1.55 ➏ 980261 P 2.5x11.5 VERY IMPORTANT! Use the following silicone oils included in the kit for initial settings: FRONT diff: 7.000cSt / REAR diff: 3.
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1. CENTER DIFFERENTIAL ➌ ➋ Graphite Grease (HUDY #106210) 940816 BB 8x16x5 ➊ STEP ➎ DETAIL Use HUDY Ball-Bearing Grease #106220 - STANDARD #106221 - BLUE #106222 - RED ➍ 964060 Graphite Grease (HUDY #106210) S 6x18x0.2 ➏ 971061 O 6x1.55 DETAIL ➎ 980261 P 2.5x11.5 VERY IMPORTANT! Use the following silicone oil included in the kit for initial setting: Center diff: 7.000cSt CORRECT 903312 INCORRECT IMPORTANT! OIL SFH M3x12 Do not overfill the differential.
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3. REAR SUSPENSION MEDIUM HARD SUSPENSION ARMS RR 353371 0.5º 1º SHIM 4x10x2 1º RF 1º Do not use INNER positions. 901408 SUSPENSION ARMS RR 0.5º 1º 0.5º 1º 0.5º RF RF 0.5º 1º X-HARD / GRAPHITE SUSPENSION ARMS RR 0.5º Do not use OUTER positions. All positions are available. SB M4x8 DETAIL 3.5x45mm ➍ Check for free movement. RR ➌ 909372 SS 3.5x22 ➊ RR 1º 0.5º INITIAL SETTING NOTE ORIENTATION ➎ 4x8mm NOTE ORIENTATION ➋ 2mm ➌ ➊ SS 3.5x45 3.5x22mm 2.
3. REAR SUSPENSION 2x Install the pivot balls with Professional Multi-Tool (HUDY #183011). L=R DETAIL 1.5mm 6mm 901312 SB M3x12 901303 SB M3x3 L=R STEP ➍ DETAIL 0mm 901305 SB M3x5 DETAIL 3x3mm 902318 ➌ SH M3x18 903308 SFH M3x8 3x18mm ➋ ➊ SET-UP BOOK 3x5mm 3x8mm ANTI-ROLL BAR INITIAL SETTING REAR ANTI-ROLL BARS DETAIL DETAIL DETAIL Loosen the 3x5 setscrew if the anti-roll bar does not turn freely. Step ➊ Step ➊ check for free movement. 14 #353418 ø1.8mm OPTION #353420 ø2.
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4. REAR SUSPENSION 2x 93mm - SHORT CVD DRIVE SHAFT L=R To tighten the setscrew you can also use the HUDY 17mm Wheel Nut Tool #107570. ➌ 901504 SB M5x4 NOTE ORIENTATION ➋ 2.5x13mm Follow the TECH TIP on page 5 for drive shaft pin servicing. 13x19x4mm ➐ 940816 3x17mm Graphite Grease (HUDY #106210) ➍ BB 8x16x5 m 2.
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5. FRONT SUSPENSION FRONT LOWER SUSP. ARMS #352120 SOFT OPTION #352120-M MEDIUM INCLUDED #352120-G GRAPHITE OPTION 909372 352324 #902407 HEX SCREW SH M4x7 WITH HEX FROM BOTTOM (4) 352314 901408 357212 353371 352314 902318 352323 909395 352120-M 901303 352470 352492 352006 333450 901305 901312 FRONT ANTI-ROLL BARS 352460 903308 352470 #333451 ALU ANTI-ROLL BAR PIVOT BALL 5.
5. FRONT SUSPENSION 353371 SHIM 4x10x2 ➍ 3.5x22mm FR 901408 SB M4x8 ➌ ➊ ➋ FR 1º INITIAL SETTING 909372 SS 3.5x22 4x8mm 2mm 0.5º ➎ INITIAL SETTING FF ➌ 3.5x45mm ➊ ➍ FF 1º DOWNSTOP SETTING DETAIL All possible mounting alternatives of eccentric bushings. DETAIL If the suspension arms do not move freely, use a HUDY Arm Reamer to resize the holes. 909395 #902407 SS 3.5x45 2.0mm Allen 0.0mm 0.5º INITIAL SETTING (HUDY #107644) Downstop screw for fine tuning.
5. FRONT SUSPENSION 2x L=R 1.5mm 6mm 901312 SB M3x12 Install the pivot balls with Professional Multi-Tool (HUDY #183011). L=R 901303 STEP ➍ DETAIL 1.5~2.5mm SB M3x3 901305 SB M3x5 DETAIL 3x3mm ➍ 902318 SH M3x18 ➋ 3x18mm 903308 ➌ SFH M3x8 ➊ 3x5mm 3x8mm DETAIL Step ➊ Loosen the 3x5 setscrew if the anti-roll bar does not turn freely. FRONT ANTI-ROLL BARS SET-UP BOOK ANTI-ROLL BAR 20 #352487 1.6mm OPTION #352489 1.8mm OPTION #352490 2.0mm OPTION #352492 2.2mm INCLUDED #352493 2.
6. FRONT SUSPENSION #357253 BRASS ADJUSTING NUT M15x1 #350907 C-HUB FRONT SUSPENSION CONVERSION SET 352133-M 903312 980263 357256 352370 357251 ALU BLACK SOFT 355237 355211 357252 OPTION #352133-M MEDIUM 941318 357254-G FRONT UPPER SUSP.
6. FRONT SUSPENSION 2x L=R ALU pivot ball BLACK color DETAIL STEEL pivot ball SILVER color #357253 Brass Adjusting Nut M15x1 Tighten hex nuts using HUDY tool #107581. 2x PIVOT BALLS MUST MOVE FREELY During initial assembly, tighten each hex nut until the pivot ball starts to bind, then loosen slightly. Verify that the pivot balls move freely. L=R 357256 SHIM 6x13x1 1mm m 2.5m HUDY Tool Allen 2.5mm FRONT UPPER SUSP.
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6. FRONT & REAR ASSEMBLY Push the top of the holder together with fingers to insert the brace with body post. 902335 SH M3x35 960030 N M3 #353280 GRAPHITE BRACE SET for extra stiffness adjustment. M3 902340 SH M3x40 M4 903412 SFH M4x12 960030 960040 N M3 N M4 DETAIL 903412 SFH M4x12 During assembly, there is no need to check gear mesh or diff play.
7. STEERING 351301 #352658 BALL STUD 6.
7. STEERING WIDER hole on TOP 970121 NOTE SPRING ORIENTATION DETAIL O 12.1x1.6 NARROWER hole on BOTTOM INITIAL PRELOAD SETTING 3~4mm DETAIL SET-UP BOOK SERVO SAVER 3.0mm HUDY Tool Allen 3.
7. STEERING 902310 SH M3x10 All possible mounting alternatives of eccentric bushings. 903308 SFH M3x8 DETAIL 1º SET-UP BOOK 0.5º NOTE ORIENTATION INITIAL SETTING ROLL CENTER 3x12mm 3x12mm 3x12mm 3x10mm Check for free movement. USE ONLY RIGHT HOLE 902312 SH M3x12 M3 DETAIL After the top deck assembly check for free movement of steering system.
7. STEERING 908312 SCH M3x12 NOTE ORIENTATION 1.0mm 1.0mm 2.0mm INITIAL SETTING 1º 0.5º All possible mounting alternatives of eccentric bushings. UPPER CLIP Behind arm CASTE R CASTER UPPER CLIP LOWER SHIM (Behind arm) (Behind arm) 2mm SET-UP BOOK ROLL CENTER CASTER 2x 4mm 21º 3mm 22.5º 2mm 24º 1mm 25.5º 0 27º LOWER SHIM Behind arm INITIAL SETTING L=R 902310 SH M3x10 NOTE ORIENTATION Adjustment block towards outside.
8. CENTER DIFF & BRAKE #354113 SUPER-LIGHTWEIGHT VENTILATED BRAKE DISK PRECISION-GROUND (2) 902330 354073 901304 903308 354049 354041 354131 354073 902316 354041 354011 372176 354011 372176 354131 902316 354110 354110 355013 CENTER DIFF 354011 #354121 STEEL BRAKE PAD - LASER CUT (4) 354011 903308 #354130 BRAKE PAD FIBER (4) #354132 BRAKE PAD “SLS” (4) 903412 It is necessary to glue the brake pad with strong CA glue suitable for steel.
8. CENTER DIFF & BRAKE 2x 902316 SH M3x16 F=R OVAL HOLE NOTE ORIENTATION ROUND HOLE NOTE ORIENTATION When using ultra-efficient brake pads you need to remove from the servo holder on radio case. Fibre pads together #354121 STEEL BRAKE PAD - LASER CUT (4) DETAIL Temporarily insert brake disk between pads to set correct gap. #354130 BRAKE PAD FIBER (4) #354132 BRAKE PAD “SLS” (4) 0.5 mm It is necessary to glue the brake pad with strong CA glue suitable for steel. STRAIGHT 2.
8. CENTER DIFF & BRAKE 903308 NOTE ORIENTATION SFH M3x8 NOTE ORIENTATION OF ALL PARTS 3x8mm 903412 SFH M4x12 4x12mm NOTE ORIENTATION OF ALL PARTS All screws Before inserting 3x30 long screws, loosen the four flat-head screws in the upper plate by 1/2 turn (CCW). Tighten all screws after assembly. 902330 SH M3x30 DETAIL Insert brake disk between brake pads.
9. FUEL TANK & ENGINE #358709 ALU MONOBLOCK ENGINE MOUNT - SWISS 7075 T6 Engine (NOT INCLUDED) 908312 901405 358731 Manifold (NOT INCLUDED) 903410 358722 #358718 ALU STAND (FX, NOVAROSSI, MAX, SIRIO) Exhaust Pipe (NOT INCLUDED) 964073 / 964074 / 964075 358533 #358719 ALU STAND (PICCO, REDS, ORION, LRP, OS, ULT.
9. FUEL TANK & ENGINE Threadlock on all screws 902305 SH M3x5 961032 S 3.2 #351159-S COMPOSITE CHASSIS SIDE GUARD L+R - SOFT #351160 CARBON FIBER CHASSIS SIDE GUARD L+R Threadlock on all screws All screws 908312 SCH M3x12 IMPORTANT! 7x10x0.2 / 0.3 / 0.5 Use appropriate shims to achieve proper clutchbell endplay. 964073 S 7x10x0.2 964074 S 7x10x0.3 964075 S 7x10x0.5 When installing the engine, first check that the drive shaft does not touch the engine.
9. FUEL TANK & ENGINE Note the orientation of the clutch shoes. The short side of spring must be in the groove of the flywheel nut. 359050 BB 5x10x4 CLUTCH SHOE #358563 GRAPHITE (2) OPTION 908308 SCH M3x8 961032 S 3.2 #358564 ALU - HARD (3) INCLUDED These bearings must still be regularly serviced and replaced when worn out. 10~ CLUTCHBELL 3 SHOE CLUTCH 10.
9. FUEL TANK & ENGINE 3x16mm DETAIL 902316 SH M3x16 2.2x6mm 903310 SFH M3x10 906206 SFP 2.2x6 #358660 GRAPHITE 125CC FUEL TANK GUARD 3x10mm 901405 SB M4x5 After running your engine, apply (#106250 HUDY ENGINE AFTER RUN OIL). 903410 SFH M4x10 Cut away for muffler outlet DETAIL Mufler screw NOT INCLUDED DETAIL DETAIL Shorten the wire as appropriate to fit the muffler. Bend the exhaust wire as appropriate to fit the muffler.
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10. RADIO CASE step 1 Servo screw (NOT INCLUDED) Plug the connectors into the receiver in Step 2. 902314 SH M3x14 961032 S 3.2 NOTE NOTE ORIENTATION Use the shims only if the servo is too high and extends from the case. step 2 Use foam to cushion the inside of the radio case so the receiver and battery cannot vibrate or move.
11. SHOCK ABSORBERS 358041 358055 PISTONS 358043 10 holes/ø1.1mm 8 holes/ø1.2mm 8 holes/ø1.3mm 358043 960026 358040 6 holes/ø1.2mm 358264 6 holes/ø1.4mm 358087-S 6 holes/ø1.3mm 358225 358032 358033 358165 DETAIL 970100 358124 358018 970180 971034 #358126 ALU FRONT SHOCK BODY -2mm (2) 358074 358142 358335 358150 #358164 FRONT SHOCK SHAFT 59mm (2) #358265 REAR SHOCK SHAFT 71.
11. SHOCK ABSORBERS DETAIL 358040 S 2.5x6x0.5 8 holes ø1.2mm pistons (INITIAL SETTING) 960026 8 holes ø1.3mm pistons (INITIAL SETTING) SHORT rod N M2.5 Install the piston with Professional Multi Tool (HUDY #183011). LONG rod NOTE ORIENTATION BAG BAG 11.1 FRONT SHOCK REAR SHOCK #358265 REAR SHOCK SHAFT 71.5mm (2) SHOCK DAMPING SHOCK PISTONS #358027 PISTON 5-HOLE (1.5mm) & 2-HOLE (1.0mm) (4) #358028 PISTON 6-HOLE (1.3mm) & 2-HOLE (1.1mm) (4) #308029 PISTON 6-HOLE (1.4mm) & 2-HOLE (1.
11. SHOCK ABSORBERS 2x FRONT SHOCKS 2x REAR SHOCKS DETAIL 970180 O 18x1.8 2x FRONT SHOCKS DETAIL 2x REAR SHOCKS Professional Multi-Tool (HUDY #183011). 1 mm DETAIL DEFAULT SHOCK REBOUND SETTING 0% (LOW REBOUND) FRONT (SHORT) 2x Oil 550cSt Follow the steps below to set the shock rebound to the default setting of 0%. SET-UP BOOK 2x REAR (LONG) Oil 600cSt HALF TIGHTEN 50% SHOCK OIL TIGHTEN FULLY 100% DETAIL 3~5x UP & DOWN 40 ➊ ➋ ➌ ➍ ➎ ➏ ➐ Extend the shock shaft completely.
11. SHOCK ABSORBERS FRONT shock PRELOAD DETAIL 2x REAR SHOCKS 2x FRONT SHOCKS approx. 2mm SHORT front shock LONG rear shock REAR shock PRELOAD SHORT spring LONG spring IMPORTANT! approx. 2mm SET-UP BOOK SPRING RATE SHOCK PRELOAD RIDE HEIGHT IMPORTANT! Both front shocks must be the same overall length. IMPORTANT! Both rear shocks must be the same overall length. FRONT & REAR SHOCKS ALTERNATE SHOCK REBOUND SETTING (50% AND 100%) The default shock rebound setting is 0% (as described on page 40).
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12. FINAL ASSEMBLY SHORTER FRONT SHOCKS (SHORT) LONGER 2x DETAIL 902318 INITIAL SETTING NOTE ORIENTATION L=R SH M3x18 L=R 902319 SH M3x18 LEFT thread 960030 Use STANDARD M3x18 screw N M3 DETAIL 3x18mm INITIAL SETTING On the front right arm use the SILVER M3x18 screw - this screw has LEFT THREAD.
12. FINAL ASSEMBLY NOTE ORIENTATION 901302 SB M3x2.5 Servo screw (NOT INCLUDED) Ensure that the servo is in neutral position before attaching the servo horn. ➊ Remove the screws from mounting plate and servo horn. SERVO BRACE LINK 303125 SHIM 3x6x3 8mm THREAD ➋ Install the servo brace. NOTE ORIENTATION ➌ Check free move. NOTE ORIENTATION CONICAL SHIM 3x6x2mm 10mm THREAD 8mm THREAD 3x6x3mm 362280 CON. SHIM 3x6x2 10mm THREAD 8mm THREAD 6.
12. FINAL ASSEMBLY 902308 #358832 AIR FILTER RAIN COVER SH M3x8 Apply #106240 HUDY air filter oil and follow the engine instructions to service the air filter. #106245 HUDY AIR FILTER SEALANT Cut the silicone tube depending on engine and muffler. Use the plastic clips to hold the tubes together. SILICONE TUBE MARKED AS BLUE = FROM FUEL TANK TO CARBURETOR SILICONE TUBE MARKED AS RED = FROM MUFFLER TO FUEL TANK (TOP) Keep fuel line away from clutchbell and flywheel.
THROTTLE LINKAGE ADJUSTMENT NEUTRAL (IDLE) ADJUST INDIVIDUAL LINKAGES SEPARATELY TO AVOID INTERFERING WITH THE OPERATION OF THE OTHERS 0.5mm ENGINE IDLING ~1mm IDLING ADJUSTMENT SCREW. Use to adjust the idle setting of the carburetor. Do not allow carburetor to close to less than 1mm. • Turn on the transmitter and receiver and set the engine control servo trim to the neutral position. • Adjust the idle adjustment screw on the carburetor to open approx. 1mm.
FRONT C-HUB SUSPENSION #350907 FRONT C-HUB SUSPENSION - SET 352160 901303 902325 352580 352150 303128-K 352287 902318 352625 960030 352150 353170 960030 901408 352652 352180 903308 352277 352378 352121-H 902412 357230 352293 352245 902305 352170 902316 ECCENTRIC BUSHINGS #352170 0° - STEEL INCLUDED #352174 1° - STEEL OPTION #352175 2° - STEEL OPTION 352293 902412 303128-K 352121-H 352150 352160 352170 352180 352245 352277 352287 ALU SHIM 3x6x6MM (10) COMPOSITE FRONT LOWER SUSPENSION ARM - HA
FRONT C-HUB SUSPENSION 2x L=R NOTE ORIENTATION Graphite Grease (HUDY #106210) 13x19x4 941318 940816 BB 13x19x4 BB 8x16x5 To tighten the setscrew you can also use the HUDY 17mm Wheel Nut Tool #107570. 8x16x5 Use HUDY Ball-Bearing Grease for servicing: 980317 903308 901504 P 3x17 SFH M3x8 SB M5x4 #106220 - Standard #106221 - Extra #106222 - Premium 2x L=R m 2.5m ➌ Marked “R“ 902412 SH M4x12 SHORT ➊ LONG ➊ ➋ ➌ 2x Install the pivot balls with Professional Multi-Tool (HUDY #183011).
FRONT C-HUB SUSPENSION DETAIL 901303 L=R SB M3x3 17.5mm 909395 SS 3.5x45 908312 SCH M3x12 INITIAL SETTING 1º 0.5º DETAIL STEP ➍ DETAIL 1.5~2.
FRONT C-HUB SUSPENSION Install the pivot balls with Professional Multi-Tool (HUDY #183011). 24mm 24mm 303128-K SHIM 3x6x6 902318 SH M3x18 6mm 960030 N M3 INITIAL SETTING DETAIL 902318 SH M3x18 902319 SH M3x18 LEFT thread Use STANDARD M3x18 screw 960030 N M3 3x18mm On the front right arm use the SILVER M3x18 screw - this screw has LEFT THREAD.
MAINTENANCE ENGINE OPERATION PREPARING TO OPERATE THE ENGINE • Never modify the engine or muffler. • Confirm the position of needle and idling before running. Be sure to run a new engine smoothly. • Make sure the air filter is clean and oiled. • Never run your engine without an air filter. Your engine can be seriously damaged if dirt and debris get inside the engine. • For proper engine break-in, please refer to the manual that came with the engine.
#355215 ADJ. DRIVE AXLE #355215 ADJ.
SET-UP SHEET C-HUB REAR XRAY XB8E’22 SET-UP VER.01 ©XRAY FRONT C-HUB STEERING BLOCK FRONT COMPOSITE ALU COMPOSITE ALU SHOCK TOWERS REAR GRAPHITE ALU ALU ....... CASTER OFFSET +2 +1 3 2 UPPER SHOCK POSITION 4 1 CAMBER LINK CASTER BUSHINGS 5 2 1 +2˚ +1˚ 0˚ -1˚ 2 1 -2˚ FRONT DROOP 5 ....................................................................................
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RC AMERICA, 2030 Century Center Blvd #15, Irving, TX 75062, USA PHONE: 214-744-2400, FAX: 214-744-2401, xray@rcamerica.
