Xray X12 User manual

2
BEFORE YOU START
The X12 is a high-quality, 1/12-pan 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 car 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. If you do not fulfill these requirements, please return the kit in unused and unassembled form back to the shop where you
have purchased it. Before building and operating your X12, YOU MUST read through all of the operating instructions and instruction manual and fully understand
them to get the maximum enjoyment and prevent unnecessary damage. Read carefully and fully understand the instructions before beginning assembly. Make sure
you review this entire manual and examine all details carefully. If for some reason you decide the X12 is not what you wanted or expected, do not continue any
further. Your hobby dealer cannot accept your X12 kit for return or exchange after it has been partially or fully assembled.
Contents of the box may differ from pictures. In line with our policy of continuous product development, the exact specifications of the kit may vary without prior
notice.
Failure to follow these instructions will be considered as abuse and/or neglect.
In line with our policy of continuous product development, the exact specifications of the kit may vary. In the unlikely event of any problems with your new kit, you
should contact the model shop where you purchased it, quoting the part number. We reserve all rights to change any specification without prior notice. All rights
reserved.
CUSTOMER SUPPORT
We have made every effort to make these instructions as easy to understand as possible. However, if you have any difficulties, problems, or questions, please do not
hesitate to contact the XRAY support team at [e-mail]. Also, please visit our Web site at www.teamxray.com to find the latest updates, set-up information,
option parts, and many other goodies. We pride ourselves on taking excellent care of our customers.
You can join thousands of XRAY fans and enthusiasts in our online community at: www.teamxray.com
XRAY USA
RC America, 2030 Century Center Blvd #15 Irving,
TX 75062
USA
Phone: [phone] * [phone]
Fax: [phone]
E-mail: [email protected]
XRAY Europe
K Výstavisku 6992 , 91101 Trenčín
Slovakia
EUROPE
Phone: [phone]
Fax: [phone]
E-mail: [e-mail]

3
XRAY Premium
Silicone Oil 700cSt
(#359270) &
Silicone Oil 3000cSt
(#359303)
Diff. Grease
(HUDY #106211)
SYMBOLS USED
TOOLS REQUIRED
TOOLS REQUIREDEQUIPMENT INCLUDED
EQUIPMENT REQUIRED
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 CA glue Apply oil
05
Apply grease Ensure smooth
non-binding
movement
Follow Set-up
Book
Side Cutters
(HUDY #189010)
Hobby Knife File Turnbuckle 4mm
(HUDY #181040)
Turnbuckle 3mm
(HUDY #181030)
Reamer
(HUDY #107600)
Pliers
(HUDY #189020)
Allen Wrench 1.5mm
(HUDY #111540)
Allen Wrench 2.0mm
(HUDY #112040)
Allen Wrench 2.5mm
(HUDY #112540)
Socket Driver 5.5mm
(HUDY #170055)
1.5 mm
2.0 mm
2.5 mm
5.5 mm
Scissors
(HUDY #188990)
Transmitter Steering ServoReceiver
Lexan™ PaintBattery Charger Front & Rear Tires Bearing Oil
(HUDY #106230)
Speed Controller
Tire Truer
(HUDY #102003)
LiPo Battery Pack
Pinion Gear and Setscrew BodyshellElectric Motor
Fibre Tape
(HUDY #107870)

4
GRAPHITE PART PREPARATION
To protect and seal edges of graphite parts, sand edges smooth and then apply CA glue.
Fine sandpaper
Use fine sandpaper to sand smooth
the edges of all graphite parts.
CA
PREPARE ALL GRAPHITE PARTS
Apply CA glue to all adges
of the graphite parts.

5
1. FRONT SUSPENSION
FRONT COIL SPRINGS
#372180 C=3.5 - GOLD
#372181 C=4.0 - SILVER
#372182 C=5.0 - BLACK
#372183 C=6.0 - GREY
ALU ECCENTRIC BUSHINGS
#372316-O 0MM - STANDARD
#372317 0.5MM - OPTION
#372318 1.0MM - OPTION
SUSPENSION ARMS
#372112 RIGHT - HARD
#372113 RIGHT - GRAPHITE
#372122 LEFT - HARD
#372123 LEFT - GRAPHITE
UPPER ARM MOUNTS
#372010 RIGHT - STANDARD
#372011 RIGHT - HARD
#372012 RIGHT - GRAPHITE
#372020 LEFT - STANDARD
#372021 LEFT - HARD
#372022 LEFT - GRAPHITE
372180
372021 372620
371105 372315
902312
901304
296530-O
372290
372316-O
303121-O
373120-O
377220
372122
372292
372293
372294
373241
BAG
903312
902310
965019
372290
372280
372131 373240
965019
372130
372650
964032
372221
303123-O
303122-O
375220
303121-O ALU SHIM 3x6x0.5MM - ORANGE (10)
303122-O ALU SHIM 3x6x1.0MM - ORANGE (10)
303123-O ALU SHIM 3x6x2.0MM - ORANGE (10)
371105 X12‘15 CHASSIS - 2.5MM GRAPHITE
372011 COMPOSITE FRONT UPPER ARM MOUNT - RIGHT - HARD
372021 COMPOSITE FRONT UPPER ARM MOUNT - LEFT - HARD
372112 COMPOSITE SUSPENSION ARM FRONT LOWER - RIGHT - HARD
372122 COMPOSITE SUSPENSION ARM FRONT LOWER - LEFT - HARD
372130 COMPOSITE FRONT UPPER SUSPENSION ARM & BALL JOINT
372131 COMPOSITE FRONT UPPER SUSPENSION ARM - HARD
372180 FRONT COIL SPRING 3.6x6x0.5MM; C=3.5 - GOLD (2)
372211 COMPOSITE STEERING BLOCK - RIGHT - HARD - V2
372221 COMPOSITE STEERING BLOCK - LEFT - HARD - V2
372280 KING PIN (2)
372290 ALU SHIM 3.2x4.8x0.5 (4)
372292 STEEL SHIM 0.2MM - SILVER (2)
372293 STEEL SHIM 0.4MM - BLACK (2)
372294 STEEL SHIM 0.6MM - GOLD (2)
372315 COMPOSITE ECCENTRIC BUSHINGS + CASTER CLIPS (2)
372316-O ALU ECCENTRIC BUSHING 0.0MM - ORANGE (2)
372620 ADJ. TURNBUCKLE M3x17 MM - HUDY SPRING STEEL™ (2)
372650 BALL-END 4.2MM - THREADED - HUDY SPRING STEEL™ (2)
373120-O ALU SHIM 5.3x7.8x0.5MM - ORANGE (10)
373240 PIVOTBALL UNIVERSAL 6.0 MM - HUDY SPRING STEEL™(2)
373241 COMPOSITE PIVOTBALL 6.0 MM (2)
375220 FRONT WHEEL AXLE (2)
372211
372112
372011
377220 FRONT UPPER PIVOT PIN 2x31MM (2)
296530-O ALU NUT M3 - ORANGE (10)
901304 HEX SCREW SB M3x4 (10)
902310 HEX SCREW SH M3x10 (10)
902312 HEX SCREW SH M3x12 (10)
903312 HEX SCREW SFH M3x12 (10)
964032 WASHER S 3.2 x 4.8 x 0.2 (10)
965019 E-CLIP 1.9 (10)

6
1. 2. 3.
3x12
3x10
5.3x7.8x0.5
3x6x0.5
7.2mm 7.2mm
ASSEMBLED VIEW
ASSEMBLED VIEW
ASSEMBLED VIEW Moves freely
Marked “L“
NOTE ORIENTATION
2mm
1+0.5mm
NOTE
ORIENTATION
COMPOSITE
BALL
STEEL BALL
2x
2x 2x
REACTIVE CASTER SETTING
= 2.5°
= 5° INITIAL SETTING
= 7.5°
Use same bushings in left and
right sides.
CASTER CAMBER
If the arm does not have
enough play, remove the clips
and thin the clips slightly with
sandpaper. The arms must have
free movement and not bind.
Upper Arm Position Adjustment Shims
The shims influence the camber gain change.
MORE shims = less camber gain, reduced initial
steering, reduced steering sensitivity (less twitchy).
LESS shims = more camber gain, increased initial
steering, increased steering sensitivity.
Use same shim thickness in left and right sides.
Make sure that
arm moves freely.
CASTER
902310
SH M3x10
901304
SB M3x4
902312
SH M3x12
373120-O
SHIM 5.3x7.8x0.5
303121-O
SHIM 3x6x0.5

7
4. 5. 6.
The flat of the nut must be PARALLEL to the lower arm.
Marked “R“
Marked “L“
2mm
1mm
ASSEMBLED VIEW
NOTE
ORIENTATION
NOTE
ORIENTATION
The number of shims used affects the ride
height of the car, so determine the proper
amount of shimming based on tire diameter.
Moves freely
Use the proper bushing, to achieve requested front track-width.
The X12 has adjustable front track-width. There are 3 different
bushings - 0mm centric (included in kit), or 0.5mm or 1.0mm
eccentric (optional). Use the same bushing in front and rear, and
also use the same orientation of the bushing on both right and left
sides.
2x 2x 2x
FRONT RIDE HEIGHT ADJUSTMENT
INITIAL SETTING
above upper arm (0.5mm)
above steering block (1.3mm)
beneath steering block (0.2mm)
ASSEMBLED VIEW
FRONT COIL SPRINGS
#372180 C=3.5 - GOLD
#372181 C=4.0 - SILVER
#372182 C=5.0 - BLACK
#372183 C=6.0 - GREY
0.5mm 0.5mm
0.2mm
0.2mm (4x)
RIDE HEIGHT
OIL
USE XRAY
SILICONE OIL
The number of washers used affects the
ride height of the car, so determine the
proper amount of shimming based on
tire diameter.
INITIAL SETTING = 0.6mm washer
RIDE HEIGHT
TRACK-WIDTH
LEFT RIGHT TRACK WIDTH
-1mm
-0.5mm
0mm
+0.5mm
+1mm
165mm
166mm
167mm
168mm
169mm
+=
Initial setting
LOW traction & bumpy track
10K cSt (#359310 XRAY)
HIGH traction & flat track
30K cSt (#359330 XRAY)
296530-O
ALU N M3
303122-O
SHIM 3x6x1
303123-O
SHIM 3x6x2
372290
S 3.2x4.8x0.5
964032
S 3.2x4.8x0.2
965019
C 1.9
903312
SFH M3x12

8
3. REAR SUSPENSION
373011
902306
376300
372650
306219
373590
903306
903310
373585
373591
373092
296530-O
902258
378140
378150
296530-O
373545 902306
373030-O
373066
371190
373092
902306
296530-O
372650
373084 901308
902306
372662
372662
903308
901303
903306
376362-O
376352
902306 903306
903310
373021
371146
903306
903306
303241
902258
372650
903306
371190
303241
296530-O
306219
373073-O
BAG
303241 BALL UNIVERSAL 5.8 MM HEX (4)
306219 COMPOSITE SET OF SERVO SHIMS (4)
371146 LINK GRAPHITE 2.5MM REAR POD LOWER PLATE
371190 COMPOSITE POD LINK (2)
372650 BALL-END 4.2MM THREADED HUDY SPRING STEEL™(2)
372662 COMPOSITE BALL-JOINT 4.2 MM (4)
373011 ALU REAR BULKHEAD - MOTOR (RIGHT)
373021 ALU REAR BULKHEAD - LEFT
373030-O ALU REAR BULKHEAD BRACE - ORANGE
373066 ALU PIVOT BALL
373073-O ALU REAR BRACE MOUNT 16MM- ORANGE (2)
373084 LINK REAR BRACE - GRAPHITE 2.5MM
373092 COMPOSITE LOWER & UPPER PIVOT BRACE - LOW ROLL-CENTER
373545 X12‘15 REAR POD UPPER PLATE - GRAPHITE
373585 SIDE SPRING C=0.9 - GOLD (2)
373590 COMPOSITE SPRING HOLDER (2)
373591 COMPOSITE SIDE SPRING HOLDER (2)
376300 COMPOSITE ANTENNA MOUNT
376352 GR. PLATE FOR ANTENNA HOLDER
376362-O ALU ANTENNA HOLDER MOUNT - ORANGE (2)
378140 SIDE LINKAGE TUBE (2)
378150 SIDE SHOCK SHAFT (2)
296530-O ALU NUT M3 - ORANGE (10)
901303 HEX SCREW SB M3x3 (10)
901308 HEX SCREW SB M3x8 (10)
902258 HEX SCREW SH M2.5x8 (10)
902306 HEX SCREW SH M3x6 (10)
903306 HEX SCREW SFH M3x6 (10)
903308 HEX SCREW SFH M3x8 (10)
903310 HEX SCREW SFH M3x10 (10)
SIDE SPRINGS
#373584 C=0.6 - SILVER
#373585 C=0.9 - GOLD
#373586 C=1.2 - BLACK

9
1. 2. 3.
NOTE
ORIENTATION
3x10
3x10
3x6
3x6
DO NOT TIGHTEN FULLY
Ensure free, smooth movement without excessive freeplay.
Lightly tighten the screws so there is no free
play, but do not overtighten otherwise the
pivotball will not move freely.
903306
SFH M3x6
903310
SFH M3x10
902306
SH M3x6
296530-O
ALU N M3
903310
SFH M3x10

10
4. 5. 6.
2x 2x
ASSEMBLED VIEW
DO NOT TIGHTEN FULLY,
PIVOTBALLS MUST TURN
FREELY.
TIGHTEN
FULLY
902258
SH M2.5x8
903306
SFH M3x6
903306
SFH M3x6

11
7. 8.
NOTE ORIENTATION
"CLICK"
0.5mm
3x6x2
3x6x2
902306
SH M3x6
903306
SFH M3x6
306219
SHIM 3x6x2
901308
SB M3x8 296530-O
ALU N M3

12
9. 10. 11.
3x6x1
3x6x1
SHOCK MOUNTING POSITION
For alternative shock mounting
positions, see page 20.
902306
SH M3x6
902306
SH M3x6
306219
SHIM 3x6x1
903306
SFH M3x6
903308
SFH M3x8
296530-O
ALU N M3
901303
SB M3x3

13
12. 13.
2x
2x
2x
Add oil in each slot of the Derlin™ side shock tubes.
NOTE: Add oil only in the slots, not on the whole tube.
After assembling the side tubes, check for smooth operation.
NOTE: It is very important to re-oil the side tubes, as least once per race day.
NOTE: You may use different oil thicknesses depending on track conditions.
Optional side shock can be used to improve traction in
low- and medium-grip conditions.
OPTIONAL PARTS (not included):
#378100 Side Shock Absorber Set
#302654 Ball End 4.9mm with 8mm Thread - V2 (2)
#303120 Set of Alu Shims (0.5mm, 1.5mm, 2.5mm)
#372651 Ball Universal 4.9mm - HUDY Spring Steel™ (2)
#902308 Hex Screw SH M3x8 (10)
3x6x2.5mm
302654
372651
3x6x2.5mm
The angle of the side tubes has a fine effect on car
performance. The higher the angle, the stiffer it feels and
the less it rolls. The less (flatter) the angle, the softer it feels
and the more it rolls.
FACTORY PRE-ASSEMBLED
OPTIONAL SIDE SHOCK
For high grip: use softer oils
For low grip or asphalt: use harder oils
OILS
#359301 1000cSt
#359302 2000cSt
#359303 3000cSt
#359305 5000cSt
#359306 6000cSt
#359307 7000cSt
#359308 8000cSt
#359310 10000cSt
OIL
902308
SH M3x8
901310
SB M3x10

14
375030
375050-O
296530-O
930130
941438
375012
372070
375090-O
375090-O
908258
375040
375080
930138
963030
941438
375896
375080
951438
951438
SPUR GEARS
#375876 76T / 64P
#375878 78T / 64P
#375880 80T / 64P
#375896 96T / 64P
4. BALL DIFFERENTIAL
BAG
372070 COMPOSITE RIDE HEIGHT ADJUSTER SET (2)
375012 STEEL REAR AXLE SHAFT - HUDY SPRING STEEL™
375030 ALU REAR WHEEL HUB - RIGHT
375040 ALU REAR WHEEL HUB - LEFT
375050-O ALU DIFF HUB - ORANGE
375080 D-LOCK DIFF PLATE (2)
375090-O SET OF ALU SHIMS (0.5MM, 1.0MM, 2.0MM) - ORANGE
375896 COMPOSITE SPUR GEAR - 96T / 64P
296530-O ALU NUT M3 - ORANGE (10)
908258 HEX SCREW SOCKET HEAD CAP M2.5x8 (10)
930130 CARBIDE BALL 3.175MM (12)
930138 CARBIDE BALL-BEARING AXIAL F3-8 3x8x3.5
941438 HIGH-SPEED BALL-BEARING 1/4“x3/8“x1/8“ RUBBER SEALED (2)
951438 BALL-BEARING 1/4“ x 3/8“ x 1/8“ FLANGED (2)
963030 CONE WASHER ST 3x8x0.5 (10)

15
1. 2.
0 2.02.5 1.5 1.0 0.5
The axle must have a VERY small amount of side
play. If there is no side play, the axle may bind
and damage the ball-bearings.
Use these Ride Height
Adjusters for initial assembly.
Use additional shims to widen the rear
track-width. Use the same shims on
both sides. For initial assembly use
6.4x8.4x1mm shims.
Bearing Oil
(HUDY #106230)
Bearing Oil
(HUDY #106230)
OIL
OIL
Flanged
Flanged
TRACK-WIDTHRIDE HEIGHT
951438
BB 1/4“x3/8“x1/8“
375090-O
6.4x8.4x1.0
908258
SCH M2.5x8

16
3.
NOTE
ORIENTATION
NOTE
ORIENTATION
NOTE
ORIENTATION
Diff Grease
(HUDY #106211)
Bearing Oil
(HUDY #106230)
Diff Grease
(HUDY #106211)
This nut affects the tightness and stiffness of the
rear differential.
Tighten the nut gently so the diff does not slip
under power, but do not overtighten or damage
to the diff balls and plates may occur.
OIL
Bearing Oil
(HUDY #106230)
OIL
Diff Grease
(HUDY #106211)
Diff Grease
(HUDY #106211)
8.0mm 7.8mm
3.0mm
3.2mm
DIFFERENTIAL
930138
BA 3x8
941438
BB 1/4“x3/8“x1/8“
930130
B 3.1
963030
ST 3x8
296530-O
ALU N M3

17
378011
378011
378061
971022
378030-O
378093
901303
378011
378071-O
378050-O
378080
378020
378011
378040-O
378070-O
965015
SHOCK OILS
#359210 100cSt
#359215 150cSt
#359220 200cSt
#359225 250cSt
#359230 300cSt
#359235 350cSt
#359240 400cSt
#359245 450cSt
#359250 500cSt
#359255 550cSt
#359260 600cSt
#359270 700cSt
#359280 800cSt
#359290 900cSt
#359301 1000cSt
#359302 2000cSt
5. SHOCK ABSORBER
BAG
378001 SHOCK ABSORBER SET
378011 COMPOSITE SHOCK PARTS - FRAME
378020 ALU THREADED SHOCK BODY - HARDCOATED
378030-O ALU SHOCK BODY CAP - LOWER - ORANGE
378040-O ALU SHOCK ADJUSTABLE COLLAR - ORANGE
378050-O ALU SHOCK BODY CAP - UPPER - ORANGE
378061 SHOCK SHAFT
378070-O ALU SHOCK SPRING COLLAR - ORANGE
378071-O ALU SHOCK ADAPTER - ORANGE
378080 SHOCK RUBBER MEMBRANE (2)
378093 SHOCK SPRING - GOLD
901303 HEX SCREW SB M3x3 (10)
965015 E-CLIP 1.5 (10)
971022 SILICONE O-RING 2x2 (10)
SHOCK SPRINGS
#378092 C=1.5 - SILVER
#378093 C=1.8 - GOLD
#378094 C=2.1 - BLACK

18
1. 2. 3.
Shock Oil
Shock Oil
OIL
OIL
Carefully remove the shock piston from the
frame, and remove all excess plastic flash
ASSEMBLED VIEW
965015
C 1.5
971022
O 2x2

19
4.
➊➋➌➍➎➏
➐
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.
Tighten the cap fully but
do not overtighten or the
rubber membrane may be
damaged. Make sure that
there is no oil leakage
after the cap is tightened.
HALF TIGHTEN TIGHTEN FULLY
100%
Extend the shock shaft
completely. Fill the shock
body with the shock oil.
Move the shock shaft up and
down a few times to release
the air bubbles trapped
beneath the piston.
Orient the filled shock
vertically for several
minutes with the shock
shaft fully extended. The
remaining air bubbles will
release.
Installtheshockmembrane
into the groove in the
upper shock cap.
Gently place the shock cap
assembly onto the filled
shock body. Excess oil will
spill from the shock. Screw
the shock cap onto the body
by only a few turns, approx.
50%. Excess oil will flow
through the hole in the
shock cap.
3~5x
UP & DOWN
50%
Follow the steps below to set the shock.
Oil 700cSt
DEFAULT SHOCK SETTING FOR CENTER SHOCK ABSORBER

20
5.
SHORT
LONG
ALTERNATIVE 2 (INITIAL SETTING)
LONG SHOCK (FORWARD POSITION)
ALTERNATIVE 1
SHORT SHOCK (REARWARD POSITION)
The length of the shock absorber affects the amount of
rear downstop. To adjust, thread the ball-joint on or off the
bottom spring cap or adapter.
DOWNSTOP ADJUSTMENT
5mm5mm Press the collar FULLY onto
the end of the shock shaft and
tighten the M3x3 setscrew.
Press the collar FULLY onto
the end of the shock shaft and
tighten the M3x3 setscrew.
For the long shock
alternative, the shock
adaptor must be used.
An innovative new feature is to change the center shock
front mounting position & shock length. By moving the
center shock mounts on the chassis to either the forward or
rearward position, the damping and steering characteristics
can be changed.
REARWARD shock position (SHORT shock):
Improved steering response, quicker direction changes.
FORWARD shock position (LONGER shock with adapter):
Improved driveability over bumps, improved on-power
traction.
For initial setting,
thread fully.
For initial setting,
thread fully.
ADAPTER
901303
SB M3x3