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4

Arm Reamer 3.0mm

INTRODUCTION 

2

TOOLS AND PREPARATION 

4

XB4 TECH TIPS 

5

REAR DIFFERENTIAL 

6

REAR CENTRAL TRANSMISSION 

8

FRONT CENTRAL TRANSMISSION 

10

BAG 

THEME 

PAGE

BAG 

THEME 

PAGE

BAG 

THEME 

PAGE

NOT INCLUDED

To ensure that you always have access 

to the most up-to-date version of the 

Set-up  Book  you  can  download  the 

HUDY  Set-up  Book  from  their  web 

site at www.hudy.net. By offering this 

online  version  instead  of  including  a 

hardcopy  printed  version  in  kits,  you 

will always be assured of having the 

most current updated version.

XRAY offers wide range of optional 

tuning  parts  which  are  listed  in  a 

table like this. Please reffer to the 

exploded view of each main section 

to  verify  which  part  is  included  in 

the  kit  while  all  other  parts  are 

available only as an optional part 

and must be purchased separately.

SYMBOLS USED

L=R

2x

CORRECT

WRONG

Overtightened

The threads 

are stripped.

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 CA glue

TOOLS REQUIRED

EQUIPMENT REQUIRED

CONTENTS

EQUIPMENT INCLUDED

Apply oil

Apply cleaner

XRAY Premium Silicone Oils

Side Cutters

(HUDY #189010)

Hobby Knife

Turnbuckle Wrench    

3mm (HUDY #181030)

Reamer

(HUDY #107600) or

(HUDY #107601)

Combination Pliers

(HUDY #189020)

HUDY TOOLS:

Transmitter

Steering Servo

Receiver

05

Tighten screw 

gently

Apply thread lock

Lexan Paint ™

Battery Charger

Tires & Inserts

Apply grease

Ensure smooth 

non-binding movement

Graphite Grease

(HUDY #106210)

Bearing Oil

(HUDY #106230)

Follow Set-Up Book

FRONT & REAR AXLES

Scissors

(HUDY #188990)

3.0 mm

SAMPLE OF

OPTIONAL PARTS

#36XXXX OPTION 1
#36XXXX OPTION 2
#36XXXX OPTION 3

Speed Controller

LiPo Battery

Pinion Gear and Setscrew

Electric Motor

Double-sided Tape

Special Tool for turnbuckles, 

nuts (HUDY #108090)

OIL

Socket 5.5mm

Socket 7.0mm

Allen 2.0mm

Allen 1.5mm

REAR SUSPENSION 

11

FRONT SUSPENSION 

14

REAR TRANSMISSION 

17

FRONT TRANSMISSION 

19

FRONT & REAR ASSEMBLY 

21

STEERING 

23

SLIPPER CLUTCH ASSEMBLY 

25

SHOCK ABSORBERS 

27

FINAL ASSEMBLY 

31

MULTIFLEX™ 

37

MAINTENANCE 

38

SET-UP SHEET 

39

Summary of Contents for XB4 2WD

Page 1: ......

Page 2: ...item The buyer expressly agrees to indemnify and hold harmless XRAY for all claims resulting directly or indirectly from the purchase ownership or use of the product By the act of assembling or opera...

Page 3: ...al use or cover or imply how long any model cars components or electronic components will last before requiring replacement Due to the high performance level of this model car you will need to periodi...

Page 4: ...Assemble in the specified order Pay attention here Assemble as many times as specified here twice Apply CA glue TOOLS REQUIRED EQUIPMENT REQUIRED CONTENTS EQUIPMENT INCLUDED Apply oil Apply cleaner XR...

Page 5: ...umbers that are related to the assembly of that section The part descriptions are color coded to make it easier for you to identify the source of a part Here are what the different colors mean Style A...

Page 6: ...36 4960 GEAR DIFF OUTDRIVE ADAPTER HUDY SPRING STEEL 2 90 3258 HEX SCREW SFH M2 5x8 10 94 1015 HIGH SPEED BALL BEARING 10x15x4 RUBBER SEALED 2 96 4031 WASHER S 3 5x10x0 2 10 96 4050 WASHER S 5x15x0 3...

Page 7: ...the diff including oil is 11 12g LOW TRACTION 700cSt HUDY 106370 MEDIUM HIGH TRACTION 2000cSt HUDY 106420 SUPER HIGH TRACTION 3000cSt HUDY 106430 NOTE Softer oil increases rear traction harder oil in...

Page 8: ...SH M3x6 10 90 2310 HEX SCREW SH M3x10 10 94 0510 HIGH SPEED BALL BEARING 5x10x4 RUBBER SEALED 2 94 0815 HIGH SPEED BALL BEARING 8x14x4 RUBBER SEALED 2 98 0210 PIN 2x10 10 36 4900 GEAR DIFFERENTIAL SET...

Page 9: ...HREAD LOCK Alternative 1 LOW MEDIUM HIGH TRACTION TRACKS SHOCK TOWER IN FRONT OF THE DIFF HOUSING SHOCK TOWER BEHIND THE DIFF HOUSING Depending on the track traction conditions there are two alternati...

Page 10: ...BLOCK SET FRONT 36 2080 GRAPHITE SHOCK TOWER FRONT 3 0MM 90 2310 HEX SCREW SH M3x10 10 BAG Follow the TECH TIP on page 5 to protect graphite parts 362000 362080 902310 902310 FRONT BLOCK 362000 IMPOR...

Page 11: ...2 36 3111 COMPOSITE SUSPENSION ARM REAR LOWER RIGHT 36 3121 COMPOSITE SUSPENSION ARM REAR LOWER LEFT 36 3311 ALU REAR LOWER SUSP HOLDER 2 FRONT 7075 T6 5MM 36 3321 ALU REAR LOWER SUSP HOLDER 2 REAR 7...

Page 12: ...s of adjustment using the center and outside positions of the eccentric bushings The middle position eccentric bushings allow for finer adjustment increments Example The track width is directly influe...

Page 13: ...TAIL DETAIL Loosen the 3x4 setscrew if the anti roll bar does not turn freely Step assembly view 901308 SB M3x8 901303 SB M3x3 901304 SB M3x4 902308 SH M3x8 IMPORTANT Do not use anti roll bars for bas...

Page 14: ...3 HEX SCREW SB M3x3 10 90 1304 HEX SCREW SB M3x4 10 90 1308 HEX SCREW SB M3x8 10 90 2308 HEX SCREW SH M3x8 10 90 3312 HEX SCREW SFH M3x12 10 303431 K 362320 362315 362310 903312 361200 902308 362111 9...

Page 15: ...plane Caster is affected not only by the C Hub caster but also by the front kick up angle relative to the flat chassis bottom The table indicates how kick up angle effects total caster Total caster C...

Page 16: ...x4 setscrew if the anti roll bar does not turn freely Step 3x4 3x3 3x8 901308 SB M3x8 901303 SB M3x3 901304 SB M3x4 902308 SH M3x8 902308 SH M3x8 assembly view 1 5mm 4mm IMPORTANT Do not use anti roll...

Page 17: ...x4 RUBBER SEALED 2 94 0512 HIGH SPEED BALL BEARING 5x12x4 RUBBER SEALED 2 96 0030 NUT M3 10 98 0210 PIN 2x10 10 2x 2x 2x L R L R L R Graphite Grease HUDY 106210 Lubricate the drive shaft connecting jo...

Page 18: ...shims SHORT LONG Important NOTE ORIENTATION INITIAL POSITION NOTE ORIENTATION NOTE ORIENTATION Alternative Shim IN FRONT OF HUB SHORT SHORT LONG LONG VIEW VIEW Alternative Shim BEHIND HUB ARM ARM NOT...

Page 19: ...PIN 2x10 10 96 4054 WASHER S 5 3x7 8x0 5 10 2x 2x L R L R Bearing Oil HUDY 106230 Effects of option hex hubs see page 17 step 2 DETAIL ALTERNATIVE 2 ALTERNATIVE 1 LoWer roll center When the longer bu...

Page 20: ...m 20mm 10mm thread 10mm thread 8mm thread 8mm thread DO NOT OVERTIGHTEN L R Check for free movement If the C hub does not move freely use a HUDY Arm Reamer to resize the hole ARM REAMER HUDY 107633 IN...

Page 21: ...Y BAG 90 2314 HEX SCREW SH M3x14 10 90 2316 HEX SCREW SH M3x16 10 90 3310 HEX SCREW SFH M3x10 10 36 1101 ALU CHASSIS SWISS 7075 T6 2MM 2WD 36 1261 COMPOSITE CHASSIS FRAME SPLITED 902314 903310 903310...

Page 22: ...22 902314 SH M3x14 902314 SH M3x14 902316 SH M3x16 3x16 DETAIL FRONT REAR ASSEMBLY 903310 SFH M3x10 903310 SFH M3x10 3x10 3x10 3x10 3x10 3x10 3x10 3x14 3x14 3x14 3x10 3x10 3x10 3x10 3x10 3x10 3x14...

Page 23: ...EERING BUSHING SHORT 2 36 2510 COMPOSITE SERVO SAVER 36 2540 ALU SERVO SAVER MAIN SHAFT 36 2550 SERVO SAVER PIVOT SHAFT 2 36 2572 ALU STEERING PLATE 2WD 36 2610 ADJ TURNBUCKLE M3 L R 50 MM SPRING STEE...

Page 24: ...ICAL SHIM 3x6x2 SHIM 3x6x4 Left thread 33 5mm 3x8 3x8 3x10 This shim must be used with 369701 XRAY DMX body use this shim from BAG 07 3x6x3 3x6x1 5mm Right thread Check for free movement NOTE ORIENTAT...

Page 25: ...K 2 0MM 2WD 36 4010 ALU MOTOR BULKHEAD 36 4020 COMPOSITE CLUTCH SHAFT HOLDER 36 4110 SLIPPER CLUTCH SHAFT HUDY SPRING STEEL 36 4120 ALU SLIPPER CLUTCH PLATE 7075 T6 BLACK HARD COATED 36 4131 SLIPPER C...

Page 26: ...e slipper clutch needs to be tighter rotate the spur gear in the counterclockwise direction If the slipper clutch needs to be looser rotate the spur gear in clockwise direction When tightening the set...

Page 27: ...8100 FRONT SHOCK ABSORBERS COMPLETE SET 2 36 8120 ALU FRONT SHOCK BODY HARD COATED 2 36 8140 ALU LOWER SHOCK BODY CAP 2 36 8160 FRONT HARDENED SHOCK SHAFT 2 36 8174 FRONT SPRING SET PROGRESSIVE 2 STRI...

Page 28: ...to the filled shock body and start to tighten the cup Tighten the cap fully 3 5x UP DOWN DEFAULT SHOCK REBOUND SETTING 0 low rebound CORRECT 3x6x1 3x6x1 EXTREMELY IMPORTANT Do not push the shock rod s...

Page 29: ...n page 34 Alternatively you may set the shock rebound setting to 50 or 100 as described below Remove the shock springs before performing shock rebound adjustment Fill the shock body with shock oil up...

Page 30: ...SHOCK PIVOT BALL WITH HEX 2 90 2308 HEX SCREW SH M3x8 10 90 2310 HEX SCREW SH M3x10 10 90 2312 HEX SCREW SH M3x12 10 90 2314 HEX SCREW SH M3x14 10 90 2316 HEX SCREW SH M3x16 10 90 3308 HEX SCREW SFH M...

Page 31: ...3 3x16 3x16 3x12 3x12 SHOCKS IN FRONT OF SUSPENSION SHOCKS BEHIND THE SUSPENSION Depending on the track traction conditions there are two alternatives how to mount the rear shocks The shocks can be mo...

Page 32: ...THREAD SERVO LINK Adjust Servo link to fit your servo Left thread 26 29mm Right thread 10mm thread 6mm thread 10mm thread REMOVE UPPER DECK FROM SERVO 6mm thread 902308 SH M3x8 306219 SHIM 3x6x2 3x6x2...

Page 33: ...amount of play between the teeth of the pinion gear and the spur gear Adjust gear mesh Tighten the screw Untighten screw Insert motor into the bulkhead 902310 SH M3x10 PINIONS OPTION 365718 18T 48P OP...

Page 34: ...trip 107871 HUDY LiPo BATTERY PACKS NOT INCLUDED 48mm CUT 902314 SH M3x14 FINAL ASSEMBLY 4x 902308 SH M3x8 903310 SFH M3x10 306219 SHIM 3x6x2 3x6x2 This shim must be used with 369701 XRAY DMX body use...

Page 35: ...the antenna tube does not hold the antenna properly apply a small drop of the CA glue to the outside end of the antenna tube while inserting it into the holder Make sure not to apply glue to the insid...

Page 36: ...the inside of the body with mild detergent and then rinse and dry thoroughly Mask all windows REAR WIDE WHEEL FRONT NARROW WHEEL 960240 N M4 FINAL ASSEMBLY wing cutting line options Apply paint masks...

Page 37: ...he car is SOFT medium stiff Use soft setting for low traction dusty tracks The car will create a lot of traction with this setting but will have less steering and response compared to stiffer setting...

Page 38: ...t it will not spin freely for an extended period of time The lightest of oils may allow it to spin for 1 2 seconds This is normal and once you have mounted the bearings in the car again the drive trai...

Page 39: ...NSTOP FRONT CAMBER REAR CAMBER SHOCK PRELOAD mm RIDE HEIGHT 107720 GAUGE SHOCK PRELOAD mm HOLES RIDE HEIGHT mm STANDARD FRONT ARM STANDARD REAR ARM 3 1 2 3 2 3 1 1 2 3 1 2 1 2 1 2 3 0 1 2 3 4 5 6 7 8...

Page 40: ...www facebook com teamxray www twitter com teamxray www youtube com xrayracing RC AMERICA 2970 BLYSTONE LANE SUITE 109 DALLAS 75220 TEXAS USA PHONE 214 744 2400 FAX 214 744 2401 xray rcamerica com...

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