HUDY #106230
HUDY #106220
HUDY #106221
HUDY #106222
RECOMMENDED PRODUCTS
SUSPENSION & DRIVETRAIN MAINTENANCE
• Check suspension for free movement during building and operation, and especially after running
and if you have crashed the car. If the suspension does not move freely, use the appropriate HUDY
Arm Reamer to clean and resize the holes of the suspension arms.
• Regularly check the drive shaft pins and if they show any wear must be immediately replaced
by new pins. If the car is run with worn pins, excessive wear on the diff outdrives will result. The
#106000 HUDY Drive Pin Replacement Tool (for 3mm Pins) is a compact, rugged multi-use tool
set for replacing 3mm drive pins in drive shafts. Use the HUDY replacement drive shaft pins 3x12
(#106051).
• Regularly inspect and replace the pins that connect the wheel drive shafts with wheel axles. Use
HUDY Graphite Grease to lubricate the drive shaft connecting joints and the diff gears.
HUDY SPRING STEEL™
The HUDY Spring Steel™ used in the car is the strongest and most durable steel material on the
RC market. While items made from HUDY Spring Steel™ are still subject to wear, the lifespan is
considerably longer than any other material. As parts made from HUDY Spring Steel™ wear, the
HUDY #106210
MAINTENANCE
• For club racing, it is recommended to check the shocks for air inside before each race and only re-fill
and bleed them if necessary. Before each race day, make sure you take the spring off of each shock,
hold it up to your ear, and quickly compress the shock rod fully into the body while listening for any
air making a “whistling” or “squishy” sound as it passes through the piston holes. If you hear any
air, refill and bleed your shocks. For high-competition racing, it is recommended that the shocks be
re-filled and bled before a large event.
➊
Remove the seals on both sides of the bearing (if present). If the seals bend a little and you can see
a kink, carefully flatten the kink out by hand.
➋
Spray the seals with motor cleaner and blow dry with compressed air.
➌
Spray the bearing on both sides with motor cleaner.
➍
Spin the bearing while it is still wet to dislodge any particles with the cleaner.
➎
Spray the bearing on both sides again.
If you spin test the bearing after you have re-oiled and sealed it, 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 train will spin freely.
Make sure you use a motor cleaner that does not leave a residue after it dries as this may cause
drag and wear in the bearings.
SHOCK MAINTENANCE
The most important maintenance task for keeping consistent shock performance is refilling and bleeding them correctly. If built correctly, it will not be necessary to re-build them often. Replacing warped/hard
o-rings, scarred piston rods, or shaved/split/loose composite upper and lower ball joints are also important.
BEARING MAINTENANCE
Ball-bearings in an off-road car must be properly maintained for smooth operation and long lifespan.
The XB2 ball-bearings are degreased and are lubricated with HUDY Bearing Oil. The following procedures are recommended to clean all of the bearings in your off-road car. For high-competition racing, we
recommended doing this every 3-4 weeks, or before a major race.
• If building or pairing new shocks, always make sure they are the same length using a shock
length measuring tool and adjust the lower ball joints as needed.
• During regular shock operation, oil naturally gets on the shock shaft and drop-by-drop slightly
gets out of the shock body. Shocks should be inspected regularly after each race, and oil replaced
as required.
➏
Blow both sides of the bearing dry with compressed air to make sure particles come out.
➐
Hold the inner part of the bearing with my left thumb/forefinger and spin it to make sure it
spins free without any abnormal vibrations or sounds.
➑
Place one drop of bearing oil into each side of the bearing.
➒
Replace both seals at the same time by lining them up on each side of the bearing and
lightly pressing them in all the way around the bearings circumference with your thumb and
forefinger. Do not press too hard or use any type of tool, such as a wrench tip, to push the
blue seals in as they will push in too far, bend and cause drag.
• Pivot balls and ball-joints will naturally wear for some time and will generate play. If there
is too much play the pivot balls and ball joints need to be replaced.
• If the car is run in wet conditions, apply WD-40® on all drivetrain parts before the run. After
the run, clean and dry the parts again.
brown color will fade (get lighter) but it will not affect the strength of the material. The brown
color is only a surface treatment and if the brown color will wear the durability of the part
will be still strong.
• Use correct oil or grease to lubricate the bearings:
#106230 HUDY Bearing Oil
#106220 HUDY Bearing Grease - Standard
#106221 HUDY Bearing Grease - Blue
#106222 HUDY Bearing Grease - Red
XB2’20 SET-UP SHEET VER. 1 ©XRAY 2019
OUT
FRONT TOE
°
1
2
3
3
2
1
2
1
1 2 3 4 5 6 7 8
1 2 3
LONGER BUSHINGS
UP
DOWN
SHIM
/mm
STEERING BLOCK
MEDIUM
HARD
GRPHITE
WING TYPE
CENTER FIN
WING CUTTING LINE / SIDE LINE
1
2
3 4
5
WING POSITION
UP
MIDDLE
DOWN
DRIVE SHAFT
/mm
Lenght
SHIM
/mm
SHIM
/mm
SHIM
/mm
REAR UPRIGHT
DIFF HEIGHT
FRONT
REAR
SHOCK POSITION
CASTER
BUSHINGS
0° 2.5° 5°
0.5°
1°
REAR ROLL CENTER HOLDERS
IN
REAR TOE
°
UPPER DECK
MEDIUM
HARD
ROLL CENTER
COMPOSITE
ALU
ROLL CENTER
MEDIUM
HARD
ALU
2
3
1
2 3
1
XB2D SUSP. ARM
XB4 SUSP. ARM
FLAT ARM
LSM ARM
ADJUSTABLE
DRIVE AXLE
CAMBER LINK
LOCATION
1
2
1
2
3
3
2
1
APPLIED
APPLIED
SHOCKS
COMMENT
ELECTRONICS
TIRES
ANTI ROLL BAR
cSt
cSt
SPRINGS
OIL
PISTONS
ø1.6mm
ø1.7mm
mm
mm
ø
ø
HOLES
HOLES
HOLES
HOLES
6
3
2
HOLES
HOLES
HOLES
6
3
2
HOLES
TRANSMISSION
BALL DIFF
GEAR DIFF
DIFFERENTIAL
STEEL
GEARS 2
4
COMPOSITE
3 PAD
2 PAD
SATELITE GEARS
SLIPPER
BRAND
COMPOUND
INSERTS
WHEELS
RACE
TRACK
NAME
DATE
LAPS
BEST LAP TIME
FINAL POSITION
sec
GEARING
PINION
SPUR GEAR
T
T
THICKNESS
MOTOR
SPEEDO
MOTOR
TIMING
BATTERY
QUALIFYING POSITION
OIL
cSt
mm
1
2
mm
mm
DOWNSTOP SHIM
mm
mm
SHOCK TOWER
ALU
GRAPHITE
ALU
GRAPHITE
BODY
BETA2
LIGHT
OTHER:
ALPHA2
RF
RR
SHIMS
/mm
LEFT = RIGHT
RIDE HEIGHT
#107721 GAUGE
RIDE HEIGHT
/mm
RIDE HEIGHT
/mm
REAR CAMBER
°
FRONT CAMBER
°
-
-
MEDIUM
HARD
REAR ARM
GRAPHITE
MEDIUM
HARD
FRONT ARM
GRAPHITE
MEDIUM
HARD
CHASSIS BRACE
COMPOSITE
ALU
ARM MOUNT
BRASS
BUMP STEER
SHIM
/mm
UPSTOP SHIM
CASTER BLOCK
MEDIUM
HARD
GRAPHITE
BALANCE
g
BALANCE
g
BALANCE
g
BALL JOINT
KIT
KIT
KICK-UP
º
KIT 26°
STEERING BUMP STEER
BUMP STEER SHIM
/mm
SHIMS
/mm
STEERING ARMS
COMPOSITE
ALU
ALU 2.5mm
CHASSIS
INSERT UNDER PISTON
DOWNSTOP SHIM
INSERT UNDER PISTON
INSERT ABOVE COLLAR
UPSTOP SHIM
INSERT ABOVE COLLAR
OTHER
OTHER
OTHER
EXTENSION
0 SLOTS
1 SLOT
2 SLOTS
STEERING PLATE
COMPOSITE
ALU
LEFT = RIGHT
ACKERMANN
OFFSET
SIZE
TIGHT
OPEN
TRACTION
SURFACE
SMOOTH
MEDIUM
MEDIUM
MEDIUM
BUMPY
TYPE
CARPET
ASTRO
CONDITION
BLUE GROOVE
HARD PACKED
DRY
DUSTY
LOAMY
WET
CLAY
TRACK
VERY-LOW
VERY-HIGH
SERVO POSITION
HIGHER
LOWER
UPPER DECK
SHOCK TOWER
FRONT WING
NO
YES
WING POSITION
0.5°
1°
LENGTH
mm
mm
mm
LENGTH
mm
SHOCK BODY
SHOCK SHAFT
LONG
LONG
SHORT
(KIT)
SHORT
(KIT)
2
1
0.5°
1°
REAR LCG
FRONT LCG
GEAR BOX
/slots
OFFSET
/slots
1 2 3 4
YES
NO
HARD
GRAPHITE
ALU
WHEELBASE
/mm
SHIM
WHEELBASE
/mm
SHIM
UPPER BRACE
YES
NO
GUARD
BRACE FLEX
ECCENTRIC BUSHINGS
1 2 3 4
1 2 3 4
ARM SHIM
/mm
STANDARD
SERVO WEIGHT
LOW PROFILE
BATTERY PLACEMENT
BATTERY SIZE
LOW SHORT
STD. SHORT
LONG SIDE
FRONT
LONG SIDE
REAR
REAR
FRONT
REAR
FRONT
ECCENTRIC SHOCK BALL
CHASSIS FLEX
SCREW USED
SCREW NOT USED
42
Summary of Contents for XB2C'20
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