Summary of XB808
Page 2
2 introduction the xray xb808 is a modern, high-competition premium luxury racing 1/8 nitro buggy that is the epitome of high-performance and fine distinctive design. Your xb808 offers highest performance, responsive handling, and traditionally exceptional xray quality, engineering, and design. The ...
Page 3
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...
Page 4
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 shadded portion cut off remaining material tighten screw gently tools required equipme...
Page 5
5 808 tech tips 962080 s 8x0.1 962081 s 8x0.2 tip tighten screw until pivot ball is tight against block. Lift ball joint until it snaps into place over pivot ball. Ball joint should move freely. The fi nished joint. Loosen and remove screw. Installing pivot balls into composite ball-joints place the ...
Page 6
6 1. Front & rear differentials 2x f=r step detail ➊ ➋ ➌ ➍ ➎ ➏ ➏ ➐ ➐ 35 2070 xb808 composite bearing hub for diff (4) 35 5001 xb808 front/rear differential - set 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 50...
Page 7
7 gear diff very important! Fill the differentials with oil just above the satellite gears. After assembly the differentials should have a length of 32.6~32.7 mm measured from the ends of the installed ball-bearings. If differentials are longer, retighten the 4 screws holding the crown gears. 32.6~3...
Page 8
8 step detail center differential bag ➊ ➋ ➌ ➍ ➎ ➏ ➏ ➐ ➐ 355070 940814 903312 355054 971060 355030 971060 355020 352070 940814 355090 964060 964030 980212 355080 355070 352070 35 2070 xb808 composite bearing hub for diff (4) 35 5011 xb808 central differential - set 35 5020 differential case 35 5030 s...
Page 9
9 gear diff after assembly the differential should have a length of 32.6~32.7 mm measured from the ends of the installed ball-bearings. If differential is longer, retighten the 4 screws holding the spur gear. 32.6~32.7 mm ➊ ➋ ➍ ➎ ➏ ➌ ➐ 940814 bb 8x14x4 971060 o 6x1.5 964060 s 6x18x0.2 center diff: s...
Page 10
10 2. Front transmission cut on both front and rear bulkhead blocks 941319 bb 13x19x4 902305 sh 3x5 902312 sh 3x12 980263 p 2.5x13 follow the tech tip on page 5 for drive shaft pin servicing follow the tech tip on page 5 to protect graphite parts 3x5 3x12 replace this pin when wear is present graphi...
Page 11
11 rear transmission cut on both front and rear bulkhead blocks rear diff 2000 cst follow the tech tip on page 5 to protect graphite parts graphite grease (hudy #106210) follow the tech tip on page 5 for drive shaft pin servicing 3x5 graphite grease (hudy #106210) 941319 bb 13x19x4 902305 sh 3x5 902...
Page 12
12 toe-in anti-squat roll center 909395 ss 3.5x45 909372 ss 3.5x22 front view r 33 3450 anti-roll bar ball joint 5.8 mm (2) 35 2002 xb808 diff bulkhead block set front/rear 35 2460 pivot ball 5.8 (10) 35 2470 ball joint 5.8 (8) 35 3114 xb808 composite rear lower suspension arm 35 3302 xb808 composit...
Page 13
13 downstop wheelbase anti-roll bar rear suspension 901312 sb m3x12 901303 sb m3x3 902318 sh m3x18 903308 sfh m3x8 901305 sb m3x5 901408 sb m4x8 960040 n m4 ➊ ➋ ➌ ➍ 3x5 3x8 l=r 4mm downstop setting l=r loosen the 3x5 setscrew if the anti- roll bar does not turn freely 4x8 downstop screw 2mm 2mm do n...
Page 14
14 track width wheelbase 980317 p 3x17 941319 bb 13x19x4 901504 sb m5x4 980263 p 2.5x13 940814 bb 8x14x4 use hudy ball-bearing grease for servicing: #106220 - standard #106221 - extra #106222 - premium ➊ ➋ assembled view l=r ➌ ➍ ➑ ➐ ➏ ➍ ➎ 4. Rear suspension 35 1301 xb808 body posts 35 2631 adj. Turn...
Page 15
15 rear suspension camber roll center wing angle 902322 sh m3x22 902316 sh m3x16 960030 n m3 905314 sp 3x14 960030 n m3 902318 sh m3x18 902320 sh m3x20 902310 sh m3x20 follow the tech tip on page 5 to install the pivot balls detail use tools to tighten as shown initial positions initial positions ri...
Page 16
16 kick-up roll center 909395 ss 3.5x45 909372 ss 3.5x22 5. Front suspension 33 3450 anti-roll bar ball joint 5.8 mm (2) 35 2002 xb808 diff bulkhead block set front/rear 35 2114 xb808 composite front lower suspension arm 35 2302 xb808 composite front lower susp. Holders set 35 2317 xb808 steel susp....
Page 17
17 downstop wheelbase anti-roll bar front suspension 901408 sb m4x8 901312 sb m3x12 901303 sb m3x3 902318 sh m3x18 903308 sfh m3x8 901305 sb m3x5 960040 n m4 ➊ ➋ ➌ ➍ 3x5 3x8 3x3 3x18 l=r l=r 2x loosen the 3x5 setscrew if the anti- roll bar does not turn freely 1.5mm 6mm follow the tech tip on page 5...
Page 18
18 caster track width 902414 sh m4x14 use hudy ball-bearing grease for servicing: #106220 - standard #106221 - extra #106222 - premium ➊ ➋ ➋ ➊ ➊ 980317 p 3x17 941319 bb 13x19x4 901504 sb m5x4 980263 p 2.5x13 940814 bb 8x14x4 6. Front suspension 35 2151 xb808 front upper arm ball joint (2) 35 2181 xb...
Page 19
19 camber roll center 902418 sh m4x18 902325 sh m3x25 902316 sfh m3x16 960030 n m3 ➊ ➋ ➌ ➌ front suspension l=r l=r initial position l=r do not overtighten do not overtighten right thread left thread detail use tools to tighten as shown note orientation adjustment block towards outside 3x16 3x25 not...
Page 20
20 903412 sfh m4x12 front & rear assembly 35 1102 xb808 alu chassis - hardcoated swiss 7075 t6 (3mm) 35 1200 front & rear bumper - v2 35 3088 xb808 composite rear brace 90 2312 hex screw sh m3x12 (10) 90 3312 hex screw sfh m3x12 (10) 90 3412 hex screw sfh m4x12 (10) 96 0030 nut m3 (10) bag 902312 96...
Page 21
21 903312 sfh m3x12 902312 sh m3x12 903412 sfh m4x12 960030 n m3 front & rear assembly detail sh 3x12 sfh 3x12.
Page 22
22 servo saver 903308 sfh m3x8 940610 bb 6x10x3 follow the tech tip on page 5 to protect graphite parts 7. Steering 30 3122 alu shim 3x6x1.0mm (10) 30 3123 alu shim 3x6x2.0mm (10) 35 1301 xb808 body posts 35 1349 xb808 composite upper plate 35 2089 composite front brace - v2 35 2501 xb808 servo save...
Page 23
23 ackermann bump steer toe-in 903314 sfh m3x14 903410 sfh m4x10 903310 sfh m3x10 903312 sfh m3x12 960030 n m3 90238 sh m3x18 902310 sh m3x10 960030 n m3 903320 sfh m3x20 903318 sfh m3x18 303122 shim 3x6x1 303123 shim 3x6x2 961032 s 3.2 steering initial position follow the tech tip on page 5 to inst...
Page 24
24 902316 sh m3x16 8. Center diff & brake 2x ca fibre pad (ferodo) bag steel pad f=r 35 4012 xb808 center diff mounting plate set 35 4041 xb808 alu brake cam post & rod (2+2) hard coated 35 4058 xb808 composite center diff mounting plate 35 4110 ventilated brake disk - laser cut - precision-ground 3...
Page 25
25 901304 sb m3x4 903308 sfh m3x8 902330 sh m3x30 903412 sfh m4x12 903308 sfh m3x8 center diff & brake note orientation before inserting 3x30 long screws, loosen the four flat-head screws in the upper plate by 1/2 turn. Tighten all screws after assembly. 1mm 1mm insert brake disk between brake pads ...
Page 26
26 903310 sfh m3x10 960030 n m3 35 1151 xb808 chassis side guards l+r 35 8526 xb808 clutch bell 16t with oversized 5x12x4mm ball-bearings 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 clut...
Page 27
27 gearing clutch 902316 sh m3x16 911410 shf m4x10 908308 sch m3x8 908312 sch m3x12 359051 bb 5x12x4 961025 s 2.5 962050 s 5x10x1 901405 sb m4x5 902308 sh m3x8 903410 sfh m4x10 960030 n m3 964073 s 7x10x0.2 964074 s 7x10x0.3 964075 s 7x10x0.5 903310 sfh m3x10 7x10x0.2 / 0.3 / 0.5 3x8 5x10 2.5 adjust...
Page 28
28 902312 sh m3x12 10. Radio case 10 bag 30 2615 adj. Turnbuckle m3 l/r 30 mm - spring steel (2) 30 6310 antenna tube (2) 30 9400 body clip (8) 35 2460 pivot ball 5.8 (10) 35 2670 servo ball joint 5.8mm (4) 35 6001 xb808 radio case set 35 6050 battery cable with switch (option) 35 6111 xb808 graphit...
Page 29
29 903308 sfh m3x8 907206 sp m2x6 903308 sfh m3x8 903310 sfh m3x10 960030 n m3 902308 sh m3x8 902310 sh m3x10 903308 sfh m3x8 route steering servo lead behind the personal transponder note orientation 902310 sh m3x10 personal transponder (not included) ensure the throttle servo is not touching the c...
Page 30
30 shock damping 971035 o 3.5x2 960025 n m2.5 358040 s 2.5x6x0.5 970100 o 10x1.5 incorrect incorrect correct bags 11.1 35 2460 pivot ball 5.8 (10) 35 8014 xb808 composite shock parts 35 8015 xb808 composite set of shims for shocks 1 & 2.5 mm 35 8038 xb808 composite shock 6-hole piston set 35 8040 ha...
Page 31
31 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 completely. T...
Page 32
32 spring rate selection 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 as...
Page 33
33 front shock 902319 sh m3x18 left thread 902325 sh m3x25 960030 n m3 902318 sh m3x18 12. Final assembly 12 bag 35 3510 rear wing 35 5260 wheel nut - hard coated (2) 35 6200 brake/throttle arms & servo arms - set 35 6401 xb808 brake/throttle system - set 35 6510 closed ball joint 3.9 (4) 35 8045 sh...
Page 34
34 rear shock 960030 n m3 901303 sb m3x3 902310 sh m3x10 903314 sfh m3x14 961022 s 2.2 902319 sh m3x18 left thread 902325 sh m3x25 902318 m3x18 final assembly 3x18 rear shocks (long) 3x10 brak e rod throttle rod thread brake rods into plastic pivots until flush with outer end 3x14 silicone tubing 10...
Page 35
35 903312 sfh m3x12 960030 n m3 902308 sh m3x8 ca detail xray rear wing #353510 white (standard) #353515 black (option) #353516 orange(option) #353518 pink (option) #353519 yellow (option) xray starburst wheels #359800 white (option) #359806 orange (option) #359808 pink (option) #359809 yellow (opti...
Page 36
36 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 ...
Page 37
37 • 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 ...
Page 38
38 38 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...
Page 39
Rear droop front droop front camber + - - + out in rear camber measure under wheel axle #107703 support blocks upper shock position rear lower shock position rear roll center front roll center camber link location 1 2 3 1 2 1 3 1 2 3 2 3 1 2 3 front lower shock position front rear applied comments b...
Page 40
All rights reserved. © xray. All artwork & design by xray all rights reserved. © xray. All artwork & design by xray xray, k vÝstavisku 6992, 91101 trencin, slovakia, europe phone: +421-32-740 11 00, fax: +421-32-740 11 09, info@teamxray.Com xray, k vÝstavisku 6992, 91101 trencin, slovakia, europe ph...