Summary of GTX8
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2 before you start the gtx8 is a high-competition, high-quality, 1/10-scale nitro 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...
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3 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 becom...
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4 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 website at www.Teamxray.Com. By offering this online version instead of including a hardcopy printed version in kits, you will always be a...
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5 xb8 tech tips 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 included thin shims behind a diff outdrive ball-bearing, depending on how much play there is. F...
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6 differential gears step detail ➎ ➎➏ ➏ detail ➊ ➋ ➌ ➍ ➎ ➏ graphite grease (hudy #106210) graphite grease (hudy #106210) use hudy ball-bearing grease #106220 - standard #106221 - blue #106222 - red 1. Front & rear differentials 2x f=r 35 5003 front/rear differential 46t - set 35 5020 composite diffe...
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7 differential oil after assembly the differentials should have a length of 32.3~32.5 mm measured from the ends of the installed ball-bearings. If differentials are longer, retighten the 4 screws holding the crown gears. 32.3~32.5 mm ➊ ➋ ➌ ➍ ➎ ➏ use hudy ball-bearing grease #106220 - standard #10622...
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8 2. Front transmission 940816 bb 8x16x5 902312 sh m3x12 980314 p 3x14 901404 sb m4x4 graphite grease (hudy #106210) apply oil from inside to prevent breakage of the rubber boot. Short cvd drive shaft before inserting the clip on the central cvd shaft joint, apply a small amount of threadlock on the...
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9 2. Rear transmission 940816 bb 8x16x5 902312 sh m3x12 980314 p 3x14 901404 sb m4x4 apply oil from inside to prevent breakage of the rubber boot. Graphite grease (hudy #106210) note orientation long cvd drive shaft cut on both front and rear bulkhead blocks before inserting the clip on the central ...
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10 bag 3. Rear suspension 909395 353426 353371 352006 909372 353317 352314 902318 903308 901305 901303 333450 352470 901312 352470 353123 352460 33 3450 anti-roll bar ball joint 5.8 mm (2) 35 2006 diff bulkhead block set front/rear 35 2314 composite eccentric bushings - v2 (2) 35 2460 pivot ball 5.8...
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11 toe-in anti-squat roll center downstop wheelbase track width 3. Rear suspension 909395 ss 3.5x45 909372 ss 3.5x22 901412 sb m4x12 353371 shim 4x10x2 check for free movement rear arm orientation ➊ ➊ ➋ ➌ ➌ ➍ ➍ ➎ 2mm 4x12mm rr rf all possible mounting alternatives of eccentric bushings push the arm ...
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12 3. Rear suspension anti-roll bar 901303 sb m3x3 901305 sb m3x5 901312 sb m3x12 902318 sh m3x18 903308 sfh m3x8 1.5mm 6mm detail -2~0mm l=r step detail ➍ detail loosen the 3x5 setscrew if the anti-roll bar does not turn freely step ➊ detail step check for free movement ➊ detail ➋ ➊ ➌ 3x5mm 3x8mm 3...
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13 980317 p 3x17 901504 sb m5x4 940814 bb 8x14x4 941319 bb 13x19x4 960030 n m3 980263 p 2.5x13 903416 sfh m4x16 2x l=r ➊ ➋ ➌ ➍ ➑ ➐ ➒ ➏ ➍ ➎ l=r graphite grease (hudy #106210) initial setting alternative 01 alternative 02 3x17mm 2.5x13mm 8x14x4mm 13x19x4mm follow the tech tip on page 5 for drive shaft...
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14 4. Rear suspension camber 353370 shim 3x9x1 353370 shim 3x9x2 960030 n m3 follow the tech tip on page 5 to install the pivot balls note orientation note orientation right thread left thread right thread left thread 43.5 mm 43.5 mm right thread right thread left thread left thread follow the tech ...
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15 4. Rear suspension 353380 shim 4x7.5x1 353381 shim 4x7.5x2 960030 n m3 902318 sh m3x18 960030 n m3 903312 sfh m3x12 902318 sh m3x18 902320 sh m3x20 detail initial setting initial setting 2x 2x l=r l=r l=r optional shims can be used for roll center adjustment. #353380 - alu shim 4x7.5x1mm #353381 ...
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16 909372 901410 902318 352120 909395 901303 901312 901305 903308 352324 352314 357212 352314 353371 353371 333450 352470 352496 352470 352460 352006 352323 front anti-roll bars #352492 2.2mm option #352493 2.3mm option #352494 2.4mm option #352495 2.5mm option #352496 2.6mm included 5. Front suspen...
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17 5. Front suspension kick up roll center downstop wheelbase track width 901410 sb m4x10 909395 ss 3.5x45 909372 ss 3.5x22 353371 shim 4x10x2 all possible mounting alternatives of eccentric bushings 3.5x22mm 3.5x45mm the tables below describe the amounts of kick-up, front track-width change dependi...
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18 5. Front suspension anti-roll bar 901303 sb m3x3 901305 sb m3x5 901312 sb m3x12 902318 sh m3x18 903308 sfh m3x8 3x3mm 3x5mm 3x8mm -2~0mm 3x18mm l=r 2x loosen the 3x5 setscrew if the anti-roll bar does not turn freely step ➊ ➊ ➋ ➌ ➍ l=r step detail ➍ 1.5mm 6mm follow the tech tip on page 5 to inst...
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19 ➊ ➋ use hudy ball-bearing grease or oil for servicing: #106220 - standard #106221 - extra #106222 - premium #106230 - bearing oil 35 2132 front upper arm right 35 2142 front upper arm left 35 2153 front upper arm ball joint (l+r) 35 2240 steering block 35 2376 gt alu steering king pin plate 0°-7°...
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20 roll center camber roll center 357256 shim 6x13x1 l=r pivot balls must move freely during initial assembly, tighten each composite hex nut until the pivot ball starts to bind, then loosen slightly. Verify that the pivot balls move freely. Tighten composite hex nuts using hudy tool #107581 2.5mm 3...
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21 903412 sfh m4x12 6. Front & rear assembly 35 1130 gt alu chassis - swiss 7075 t6 (3mm) 35 1232 gt composite front & rear suspension holder plate 35 3083 gt composite rear brace bag 902325 351232 351130 903412 903412 960030 960040 353083 90 2325 hex screw sh m3x25 (10) 90 3412 hex screw sfh m4x12 ...
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22 6. Front & rear assembly 902325 sh m3x25 903412 sfh m4x12 960030 n m3 960040 n m4 #353281 graphite brace set for extra stiffness adjustment. 903412 sfh m4x12 m3 m4 note orientation.
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23 352664 7. Steering 30 3122 alu shim 3x6x1.0mm (10) 35 1344 composite upper plate 35 2040 gt graphite front shock tower - cnc machined 3.5 mm 35 2084 composite front brace 35 2314 composite square adj. Roll center bushings - v2 (2) 35 2333 alu front upper arm holder - swiss 7075 t6 (6mm) 35 2381 c...
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24 servo saver book set-up 7. Steering 902308 sh m3x8 940610 bb 6x10x3 903410 sfh m4x10 970121 o 12.1x1.6 4~ 5mm initial preload setting detail detail 3.0mm hudy tool allen 3.0mm note orientation detail for servicing use bearing oil (hudy #106230).
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25 roll center 903308 sfh m3x8 903312 sfh m3x12 check for free movement after the top deck assembly check for free movement of steering system. 4x12mm 3x12mm 3x10mm 3x10mm 3x12mm 3x12mm note orientation m3 m4 right thread right thread left thread left thread 34.7 mm 34.7 mm left thread right thread ...
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26 roll center caster ackermann bump steer toe-in caster 7. Steering f=r 2.0mm 0.5mm + 1.0mm upper clip lower shim behind arm behind arm 960030 n m3 303122 shim 3x6x1 l=r 2x 1.0mm check for free movement check for free movement initial position 902312 sh m3x12 962041 shim 4x8x0.5 902310 sh m3x10 not...
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27 8. Center diff & brake bag 34 5520-o carrier for 2-speed gear (2nd) - swiss 7075 t6 - orange 34 5530 alu drive flange with one-way bearing - swiss 7075 t6 34 5540 composite 2-speed gear box shoe - set 34 5546 composite 2-speed gear 46t (2nd) - h 34 5549 composite 2-speed gear 49t (1st) 34 5570 ad...
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28 8. Center diff & brake 902316 sh m3x16 901304 sb m3x4 903308 sfh m3x8 2x f=r fibre pads together round hole oval hole note orientation note orientation note orientation note orientation temporarily insert brake disk between pads to set correct gap 0.5 mm detail for improved brake efficiency and i...
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29 2-speed transmission 901305 sb m3x5 902314 sh m3x14 983404 rp 4x4 903306 sfh m3x6 950814 bb 8x14x4 arm reamer arm reamer ➊ ➊ ➋ ➋ ➌ ➍ ➍ ➎ ➎ setscrews must not protrude top of screw head should be level with hole bottom edge do not overtighten gap-setting setscrews. Only tighten until roller pins c...
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30 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. 981310 p 3x10 901404 sb m4x4 one way lube 46 49 940817 bb 8x16x5 8. Center diff & brake note orientation note orientation note orientation detail bearing oi...
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31 33 8584 shim 5x7x0.2 (10) 34 8516 xca alu 7075 t6 hard coated pinion gear - 16t (1st) 34 8519 xca alu 7075 t6 hard coated pinion gear - 19t (2nd) 35 1159 chassis side guards l+r 35 3370 set of composite rear hub carrier shims 35 8510 gt 2-speed clutch bell - lightweight 35 8532 flywheel - high to...
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32 7x10x0.2 / 0.3 / 0.5 use appropriate shims to achieve proper clutchbell endplay all screws use the cone included with your engine, or use option xray cone #358540 note orientation important! When installing the engine, first check that the drive shaft does not touch the engine. If it does, remove...
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33 gearing gear mesh adj. Clutch springs clutch shoe 911410 shf m4x10 thread lock all screws adjust gear mesh so there is minimal play between the gears. Too tight gear mesh will put excessive strain on all parts and damage the parts. Too loose gear mesh may result in stripped gears. 9. Fuel tank & ...
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34 353370 shim 3x9x2 9. Fuel tank & engine cut away for muffler outlet bend the exhaust wire as appropriate to fit the muffler after running your engine, apply (#106250 hudy engine after run oil) alternative 150cc fuel tank alternative 125cc fuel tank initial setting #358605 fuel tank 125cc with flo...
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35 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 6004 composite radio case set - soft 35 6050 battery cable...
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36 907206 sp m2x6 903412 sfh m4x12 960030 n m3 902314 sh m3x14 902310 sh m3x10 902312 sh m3x12 902314 sh m3x14 10. Radio case use foam to cushion the inside of the radio case so the receiver and battery cannot vibrate or move. Plug the connectors into the receiver in step 2 use the shims only if the...
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37 bag 11 35 2460 pivot ball 5.8 - v3 (10) 35 8019 composite set of shims for shocks - v2 (2) 35 8020 composite shock parts 35 8032 shock piston set 8-hole (1.2; 1.3) 10-h. (1.1mm) - delrin - v2 35 8033 composite shock 6-hole piston set (1.2; 1.3; 1.4mm) - delrin - v2 35 8040 hardened shock shims (4...
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38 shock damping shock pistons 960026 n m2.5 358040 s 2.5x6x0.5 there are two different thickness shims, use them as shown. Use the same procedure when building both front and rear shocks. Correct tighten gently the self-locking nut is gently tightened. The piston remains undistorted and fits inside...
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39 shock oil 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 completely. The rebound will be at approximately 0%. ➐ half tighten tighten fully 100% follow the s...
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40 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. Gently place the shock cap assembly onto the filled...
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41 960030 902325 358047 960030 349400 902318 rear shock front shock 901306 351430 351420 351420 12 bag 30 2291 steel steering bushing (2+2) 30 2630 adj. Turnbuckle l/r 20 mm - hudy spring steel™ (2) 30 2663 composite ball joint 4.9mm - open - v2 (8) 30 3123 alu shim 3x6x2.0mm (10) 34 9400 body clip ...
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42 shock absorbers book set-up shock absorbers 960030 n m3 960030 n m3 902319 sh m3x18 left thread 902318 m3x18 901303 sb m3x3 902314 sh m3x14 shorter longer shorter longer on the front right arm use the silver m3x18 screw - this screw has left thread use standard m3x18 screw 3x18mm l=r l=r 2x 2x 90...
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43 901303 sb m3x3 961022 s 2.2 servo screw (not included) ensure that the servo is in neutral position before attaching the servo horn 3x12mm 3x6mm 3x6mm 4x14mm 4x16mm m3 m4 ➊ remove the screws from mounting plate and servo horn ➋ install the servo brace ➌ check free move 3x6x2mm 3x6x2mm note orient...
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44 902310 sh m3x10 960030 n m3 12. Final assembly wheel nuts #355261 open included #293560 covered option #355265 covered option wheel & tire (not included) wheel & tire (not included) 4x 902325 sh m3x25 to tighten the screw you can also use the #107570 hudy 17mm wheel nut tool cut off remaining mat...
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45 ➍ before cutting and making holes on the body, put the unpainted body on the chassis to confirm the mounting position and location for holes and cutouts. Before painting, wash the inside of the body with mild detergent, and then rinse and dry thoroughly. Mask all windows. Apply paint masks as app...
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46 • 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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47 problem cause solution engine does not start • fuel tank is empty or carburetor is not primed • bad glowplug or dead glowdriver battery • fuel lines, fuel filter, air cleaner, or muffler is clogged • engine is flooded due to over-priming • carburetor is not adjusted properly • throttle servo link...
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/teamxray /teamxray /teamxray /xrayracing /+teamxrayrc /xrayracing rc america, 2030 century center blvd #15, irving, tx 75062, usa phone: 214-744-2400, fax: 214-744-2401, xray@rcamerica.Com.