Summary of 1/8 Luxury racing truggy
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World champions.
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2 introduction the xray xt9 is a modern, high-competition premium luxury racing 1/8 nitro truggy that is the epitome of high-performance and fine distinctive design. Your xt9 offers highest performance, responsive handling, and traditionally exceptional xray quality, engineering, and design. The sup...
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3 introduction 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 ...
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4 symbols used l=r 2x ca oil part bags used assemble left and right sides the same way assemble in the specified order pay attention here assemble as many times as specified (here twice) apply instant glue cut off shaded portion cut off remaining material tighten screw gently tools required equipmen...
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5 xt9 tech tips before filling the differentials with oil we suggest that you first check gear mesh as below. If there is too much or too little diff side play, this may create non-optimal gear mesh between the diff gear and the pinion drive gear. This is easily resolved by inserting 1 or 2 of the i...
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6 differential gears 1. Front & rear differentials 2x f=r step detail ➊ ➋ ➌ ➍ ➎ ➎ ➎➏ ➏ 35 5020 differential case 35 5030 steel diff bevel & satellite gears (2+4) 35 5043 front/rear diff large bevel gear 43t - hudy steel 35 5061 front diff outdrive adapter - long (2) - hudy spring steel™ 35 5080 diff...
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7 differential oil fill the differentials with oil just above the satellite gears. Important! After assembly the differentials should have a length of 32.4 mm measured from the ends of the installed ball-bearings. If differentials are longer, retighten the 4 screws holding the crown gears. 32.4mm ve...
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8 differential gears step detail center differential bag ➊ ➋ ➌ ➍ ➎ ➎ ➏ ➏ ➎ 355071 940816 903312 355048 971060 355030 971060 355020 940816 355090 964060 964030 980212 355080 355071 35 5020 differential case 35 5030 steel diff bevel & satellite gears (2+4) 35 5048 center diff spur gear 48t 35 5071 cen...
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9 differential oil after assembly the differential should have a length of 32.4 mm measured from the ends of the installed ball-bearings. If differential is longer, retighten the 4 screws holding the spur gear. 32.4 mm ➊ ➋ ➍ ➎ ➎ ➏ ➌ 971060 o 6x1.5 964060 s 6x18x0.2 980212 p 2x11.6 very important! Fi...
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10 2. Front transmission 940816 bb 8x16x5 902312 sh 3x12 980314 p 3x14 901404 sb 4x4 901310 sb 3x10 902310 sh 3x10 graphite grease (hudy #106210) follow the tech tip on page 5 for drive shaft pin servicing note orientation short cvd drive shaft assembled view cut on both front and rear bulkhead bloc...
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11 rear transmission 940816 bb 8x16x5 902312 sh 3x12 980314 p 3x14 902310 sh 3x10 901404 sb 4x4 graphite grease (hudy #106210) follow the tech tip on page 5 for drive shaft pin servicing note orientation long cvd drive shaft assembled view cut on both front and rear bulkhead blocks before inserting ...
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12 33 3450 anti-roll bar ball joint 5.8 mm (2) 35 2001 diff bulkhead block set rear 35 2314 composite eccentric bushings (2) 35 2460 pivot ball 5.8 (10) 35 2470 ball joint 5.8 (8) 35 3118 xt8 rear lower suspension arm 35 3304 alu rear lower susp. Holders set- square adj. Roll-center 35 3316 alu rear...
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13 toe-in anti-squat roll center downstop wheelbase track width rear suspension 909395 ss 3.5x45 909372 ss 3.5x22 901408 sb m4x8 eccentric bushings have two different offsets from the center. Middle position = 0.5 mm or 0.5° from center outer position = 1mm or 1° from center the new xray rear alu lo...
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14 rear suspension anti-roll bar 901303 sb m3x3 901305 sb m3x5 901312 sb m3x12 902318 sh m3x18 ➊ ➋ ➌ ➍ 3x5 3x8 903308 sfh m3x8 l=r 2x 1.5mm 6mm follow the tech tip on page 5 to install the pivot balls 3x3 l=r step check for free movement ➊ 0mm step detail ➍ 3x18 detail detail loosen the 3x5 setscrew...
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15 track width wheelbase 980317 p 3x17 901404 sb m4x4 901504 sb m5x4 902305 sh m3x5 961032 s 3.2 980264 p 2.5x14 940816 bb 8x16x5 use hudy ball-bearing grease for servicing: #106220 - standard #106221 - extra #106222 - premium ➊ ➋ ➌ ➍ ➑ ➒ ➓ ➐ ➏ ➏ ➎ assembled view l=r 4. Rear suspension 35 2638 adj. ...
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16 camber roll center rear suspension rear wing 902322 sh m3x22 902316 sh m3x16 960030 n m3 902314 sh m3x14 960030 n m3 902322 sh m3x22 follow the tech tip on page 5 to install the pivot balls detail use tools to tighten as shown special tool for all turnbuckles, nuts (hudy #108090) initial position...
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17 5. Front suspension 33 3450 anti-roll bar ball joint 5.8 mm (2) 35 2000 diff bulkhead block set front 35 2118 xt8 front lower suspension arm right 35 2128 xt8 front lower suspension arm left 35 2304 alu front lower susp. Holders set - square adj. Roll-center 35 2323 alu front lower susp. Holder -...
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18 front suspension kick up roll center downstop wheelbase track width 901408 sb m4x8 909395 ss 3.5x45 909372 ss 3.5x22 all possible mounting alternatives of eccentric bushings composite eccentric bushings initial position 1 1 0.5 0.5 0 composite eccentric bushings initial position 1 1 0.5 0.5 0 fro...
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19 front suspension anti-roll bar 901303 sb m3x3 901305 sb m3x5 901312 sb m3x12 902318 sh m3x18 903308 sfh m3x8 l=r 2x 1.5mm 6mm follow the tech tip on page 5 to install the pivot balls step check for free movement ➊ detail detail loosen the 3x5 setscrew if the anti-roll bar does not turn freely ste...
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20 20 use hudy ball-bearing grease for servicing: #106220 - standard #106221 - extra #106222 - premium ➊ ➊ ➊ ➋ 980317 p 3x17 901404 sb m4x4 901504 sb m5x4 902412 sh m4x12 902416 sh m4x16 980264 p 2.5x14 940816 bb 8x16x5 caster track width 6. Front suspension 35 2150 front upper arm ball joint (2) 35...
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21 camber roll center 902322 sh m3x22 902318 sfh m3x18 960030 n m3 ➊ press pivot ball into arm until it snaps into place the caster bushing influences the total caster of the car. Please see page 18. Assembly 2.5 mm step detail ➎ remove 3x5 screw holding composite bushing in arm. Push out the pivot ...
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22 903412 sfh m4x12 front & rear assembly 35 1122 xt9 alu chassis - hardcoated swiss 7075 t6 (3mm) 35 1200 front & rear bumper - v2 35 3087 composite rear brace - short 35 3089 composite rear brace - v2 90 2312 hex screw sh m3x12 (10) 90 3312 hex screw sfh m3x12 (10) 90 3412 hex screw sfh m4x12 (10)...
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23 903312 sfh m3x12 902312 sh m3x16 903412 sfh m4x12 960030 n m3 front & rear assembly front & rear assembly sh 3x12 sfh 3x12 detail.
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24 servo saver 903308 sfh m3x8 940610 bb 6x10x3 follow the tech tip on page 5 to protect graphite parts 971120 o 12x1.6 7. Steering 30 3122 alu shim 3x6x1.0mm (10) 30 3123 alu shim 3x6x2.0mm (10) 35 1346 xt9 graphite upper plate 35 2089 composite front brace - v2 35 2500 servo saver complete set - v...
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25 ackermann bump steer toe-in 902314 sh m3x14 903410 sfh m4x10 903312 sfh m3x12 960030 n m3 902308 sh m3x8 902310 sh m3x10 960030 n m3 303123 shim 3x6x2 step step steering follow the tech tip on page 5 to install the pivot balls right thread left thread 66.6 mm 66.6 mm 4x10 3x14 3x8 3x12 1mm shim n...
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26 902316 sh m3x16 8. Center diff & brake 2x ca fibre pad (ferodo™) bag steel pad f=r 35 4011 center diff mounting plate - set 35 4040 brake cam post & rod (2+2) 35 4054 xt8 graphite center diff mounting plate 35 4080 composite bushing for diff mounting plate (2) 35 4110 ventilated brake disk - lase...
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27 901304 sb m3x4 903308 sfh m3x8 902330 sh m3x30 903412 sfh m4x12 903308 sfh m3x8 8. Center diff & brake center diff & brake before inserting 3x30 long screws, loosen the four flat-head screws in the upper plate by 1/2 turn. Tighten all screws after assembly. 3mm 0mm detail note orientation of all ...
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28 903310 sfh m3x10 903314 sfh m3x14 960030 n m3 35 1153 xb9 chassis side guards l+r 35 8513 clutch bell 13t 35 8531 flywheel 35 8540 flywheel collar (option) 35 8550 flywheel nut - hudy spring steel™ 35 8561 alu clutch shoes - light 1.71g - cnc machined (3) 35 8585 clutch springs - hard (3) 35 8603...
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29 gearing gear mesh adj. Clutch springs clutch shoe 911410 shf m4x10 908308 sch m3x8 908312 sch m3x12 359050 bb 5x10x4 961025 s 2.5 962050 s 5x10x1 964073 s 7x10x0.2 964074 s 7x10x0.3 964075 s 7x10x0.5 7x10x0.2 / 0.3 / 0.5 3x8 5x10 2.5 adjust engine position to achieve proper gear mesh use appropri...
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30 902316 sh m3x16 901405 sb m4x5 903410 sfh m4x10 903310 sfh m3x10 902308 sh m3x8 3x8 detail 3x16 3x16 3x10 3x10 detail fuel tank & engine bend the exhaust wire as appropriate to fit the muffler. Not included.
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31 902312 sh m3x12 10. Radio case 10 bag 30 2611 adj. Turnbuckle l/r 35 mm - hudy spring steel (2) 30 6310 antenna tube (2) 33 6120 composite steering servo holder - set - v2 35 2460 pivot ball 5.8 (10) 35 2670 servo ball joint 5.8mm (4) 35 6003 xb9 radio case set 35 6050 battery cable with switch (...
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32 907206 sp m2x6 903412 sfh m4x12 960030 n m3 960033 n m3 902312 sh m3x12 902314 sh m3x14 902310 sh m3x10 902312 sh m3x12 902316 sh m3x16 radio case servo screw note orientation of servo arm when servo is at neutral use foam to cushion the inside of the radio case so the receiver and battery cannot...
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33 shock damping shock pistons 971034 o 3.4x2 960026 n m2.5 358040 s 2.5x6x0.5 970100 o 10x1.5 incorrect incorrect correct cutaway view bags 11.1 35 2460 pivot ball 5.8 - v3 (10) 35 8019 xb9 composite set of shims for shocks (2) 35 8020 xb9 composite shock parts 35 8032 xb9 shock piston set 8-hole (...
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34 shock oil 970180 o 18x1.8 incorrect incorrect correct incorrect correct front shocks rear shocks 1~1.5 mm gently push the shock shaft completely into the shock body. Excess oil will flow through the hole in the shock cap. Keep the shock shaft pushed in the shock body and tighten the shock cap com...
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35 spring rate selection shock preload ride height fill the shock body with shock oil up to the top. Make sure to use same viscosity shock oil as is in the shock. ➋ orient the filled shock vertically for several minutes with the shock shaft fully extended. The remaining air bubbles will release. Gen...
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36 shock absorbers 902319 sh m3x18 left thread 960030 n m3 902318 sh m3x18 12. Final assembly 12 bag 35 1310 foam washer for body posts (4) 35 3511-k xb9 rear wing - black 35 3511 xb9 rear wing - white (option) 35 3511-y xb9 rear wing - yellow (option) 35 3565 composite rear wing shim - black (2) 35...
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37 shock absorbers 960030 n m3 901303 sb m3x3 901303 sb m3x3 902310 sh m3x10 903314 sfh m3x14 961022 s 2.2 902319 sh m3x18 left thread 902318 m3x18 final assembly 3x10 brak e rod throttle rod thread brake rods into plastic pivots until flush with outer end 3x14 silicone tubing 10mm brak e rod tighte...
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38 903312 sfh m3x12 960030 n m3 902308 sh m3x8 final assembly cut the silicone tube depending on engine and muffler. Use the plastic clips to hold the tubes together. The fuel filter a smal hole that fits into notch on the composite holder to prevent the filter from turning freely. To tighten the se...
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39 brake adjusting knobs: upper linkage - rear brake lower linkage - front brake cca 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. • adjust both the throttle linkage ...
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40 note.
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41 • 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 ...
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42 42 recommended products • use hudy bearing grease to regularly lubricate grease-bearing ball-bearings. • use hudy bearing oil to lubricate the bearings of the steering system. • use hudy bearing grease to regularly lubricate the clutch bearings. Suspension & drivetrain maintenance • check suspens...
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Front droop measure under wheel axle #107717 gauge 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 -10 -11 -12 -13 front front rear rear ff fr rr rf set-up sheet type differentials type inserts wheels tires body type manifold muffler plug fuel engine gearing type front rear center differrential - oil clutch bell spur ...
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