Schumacher CAT L1 R PURE BEAST User manual

71-73 Tenter Road
Moulton Park
Northampton
NN3 6AX
Instruction Manual ISS01
www.racing-cars.com
S1651

01
IMPORTANT SAFETY NOTES
We strongly recommend that anyone driving RC cars, or organising events, should obtain third party liability insurance. In the UK this
can be done by joining the BRCA. www.brca.org
This product is not suitable for children under the age of 14, without the direct supervision of a responsible adult.
Select an area for assembly that is away from the reach of small children.
The parts in this kit are small and can be swallowed by children causing choking and possible internal injuries.
Exercise care when using hand tools and sharp instruments during assembly.
Carefully read all manufacturers warnings and cautions for any additional items used in the construction.
In line with our policy of continuous development the exact details of the kit may vary.
DO NOT use this car on public roads or in places where it can interfere with traffic, people or animals.
Always check the operation of the radio with the wheels off the ground, before using the car.
Make sure the radio and car batteries are fully charged before use.
Disconnect and remove the battery from the car when not in use.
Always store and charge LiPo batteries in a fireproof container.
DO NOT put fingers or any objects inside rotating or moving parts as this may cause injury.
Make sure the charger is correctly set for the type of battery you are using.
Incorrect charging may cause a fire.
Insulate all exposed electrical wiring. Exposed or damaged wires can cause short circuits and fire.
The motor and speed controller can become hot during use. DO NOT touch them immediately after using your car as this may cause injury.
ADDITIONAL ITEMS REQUIRED
TOOLS REQUIRED ICON KEYS
Radio Equipment
Steering Servo
Motor and Pinion Gear
Electronic Speed Controller
1.5mm Hex Driver - U2789
2.0mm Hex Driver - U2790
2.5mm Hex Driver - U2791
3.0mm Hex Driver - U2792
5.5mm M3 Nut Driver - U2795
7.0mm M4 Nut Driver - U2796
Body Reamer - U2818
Pliers - CR528
Side Cutters - CR527
Soldering Iron - CR275
Solder - U3107
Curved Scissors - CR044
2S Shorty LiPo
Polycarbonate Paint Pro Tyre Glue
Battery Charger
Tyres and Inserts
CORE RC Medium Thread
Lock 3ml - CR520
THREAD LOCK
CORE RC 522 Pro Tyre
Glue 20g + 2 Nozzles - CR522
CA GLUE
Caution/Important note. Please read.
!
Axle Grease - Pot - U1300
AXLE GREASE
Left-Hand Side of car
LH
Right-Hand Side of car
RH
Additional information that will help you
build a faster race car.
RACE TIP
Set up Sheet - Refer to page 40.

02
NOTE location
of ‘O’ Ring .
A
!
!
Ensure screw is clean
& let threadlock dry
for 20min.
!
Grip shaft here.
!
Use pliers.
!
Recess this side.
Piston White 1.6 2 Hole
22.0mm
!
Slowly move piston
up and down. Let the
air bubbles rise to the
top before next step.
!
Slowly fully compress
the shock. Once the
excess oil has been
expelled, seal the cap
with the screw A.
This process results
in an aerated damper.
Cap V S A
RACE TIP
For top performance
replace the oil every
2-3 meetings.
Change the ‘O’ Rings
after every 4-6
meetings. Spring lb/in
Blue 3.7
C
Important!
Note placement of
piston support .
!
!
Build two identical front shocks.
!
Remove parts cleanly from sprue.
File parts if necessary.
Ensure ‘C’ is not a tight fit in
shock body.
!
Remove piston cleanly from sprue.
File part if necessary.
!
Ensure the O’Ring is
assembled on the
correct side.
!
Apply a drop of oil to the
shaft to ease assembly.
!
These parts can be found
on the white shock sprue,
loose in the box.
!
Ensure piston is a sliding
fit in the shock body.
Use the low spring
seat when using
the car on carpet.
Low High
!
BAG A - Step 01
A x2
7.0x 1.0 Black ‘O’ Ring
B x4
Red ‘O’ Ring
C x2
Big Bore Shock Bush
A
C
B
A
C
B
BAG A - Step 02
A x2
M 2.5x 8mm Csk Screw
B x2
Rod End Ball
C x2
Shock Piston Support
BAG A - Step 03
A x2
M2.5x 4 Button Hd Screw
B x2
C x2
‘O’ Ring Ø12 x 1.6
‘O’ Ring Ø15 x 1.6
A
B
C
LH
RH
Max Ø1.9mm
!Max Ø1.9mm
!

03
28.5mm
!
Grip shaft here.
!
Ensure screw is clean
& let threadlock dry
for 20min.
!
Recess this side.
Piston White 1.8 2 Hole
This process results
in an aerated damper.
Cap V S A
LH
RH
Max Ø1.9mm
!
Max Ø1.9mm
!
!
Slowly move piston
up and down. Let the
air bubbles rise to the
top before next step.
!
Slowly fully compress
the shock. Once the
excess oil has been
expelled, seal the cap
with the screw A.
Spring lb/in
Green 2.2
C
Important!
Note placement of
piston support .
!
!
Build two identical rear shocks.
!
Remove piston cleanly from sprue.
File part if necessary.
!
Apply a drop of oil to the
shaft to ease assembly.
!
Ensure the O’Ring is
assembled on the
correct side.
NOTE location
of ‘O’ Ring .
A
!
!
Remove parts cleanly from sprue.
File parts if necessary.
Ensure ‘C’ is not a tight fit in
shock body.
!
These parts can be found
on the white shock sprue,
loose in the box.
!
Ensure piston is a sliding
fit in the shock body.
A x2
7.0x 1.0 Black ‘O’ Ring
B x4
Red ‘O’ Ring
C x2
Big Bore Shock Bush
BAG A - Step 04
A
C
B
BAG A - Step 05
A x2
2.5x 8mm Csk Screw
B x2
Shock Piston Support
A
B
BAG A - Step 06
A x2
M2.5x 4 Button Hd Screw
B x2
C x2
‘O’ Ring Ø12 x 1.6
‘O’ Ring Ø15 x 1.6
C
A
B
RACE TIP
For top performance
replace the oil every
2-3 meetings.
Change the ‘O’ Rings
after every 4-6
meetings.

04
!
Use to pre-tap the 4 holes in the
diff body. Ensure good alignment.
M2.5x 8 Cap Hd Screw
x1
RACE TIP
Use shims A and B
to take up excessive
end float. Max 3 x A and
2 x B. We recommend
starting with 1 of
each first.
RACE TIP
Use shims A and B
to take up excessive
end float. Max 3 x A and
2 x B. We recommend
starting with 1 of
each first.
!
Fill until oil just covers diff pin.
RACE TIP
Put a little oil in the
diff housing before you
place the gears in.
Always make sure all
the bubbles in the
oil come out.
!
If the diff is too tight remove shim ‘B’.
!
If the diff is too tight remove shim ‘B’.
RACE TIP
Assemble the diff
without any oil first to
check gear mesh.
If the gear mesh is
correct, add oil.
!
Use a small amount of diff oil on shim
‘D’ to hold the gear in place whilst
assembling the diff.
!
Use a small amount of diff oil on shim
‘D’ to hold the gear in place whilst
assembling the diff.
!
Front Diff (Silver Outputs)
BAG A - Step 07
A x3
B x2
C x1
Ø5 x Ø7 x 0.1mm Shim
Ø4 x Ø13 x 0.1mm Shim
Ø1.5 x 7.8 Pin
E x1
‘O’ Ring Ø3.69 x 1.8
D x1
Ø4 x Ø13 x 0.5mm Shim
A
B
D
C
E
BAG A - Step 08
A x3
B x2
C x1
Ø5 x Ø7 x 0.1mm Shim
Ø4 x Ø13 x 0.1mm Shim
Ø1.5 x 7.8 Pin
E x1
‘O’ Ring Ø3.69 x 1.8
D x1
Ø4 x Ø13 x 0.5mm Shim
BAG A - Step 09
A x2
Ø3 x Ø9 x 0.5mm Shim
A
EB
D
C
A
A
B x4
M2.5x 10 Csk Hd Screw
C x1
‘O’ Ring Ø21 x 1.0
C
BB

05
!
Use to pre-tap the 4 holes in the
diff body. Ensure good alignment.
M2.5x 8 Cap Hd Screw
x1 (From step 7)
RACE TIP
Use shims A and B
to take up excessive
end float. Max 3 x A and
2 x B. We recommend
starting with 1 of
each first.
RACE TIP
Use shims A and B
to take up excessive
end float. Max 3 x A and
2 x B. We recommend
starting with 1 of
each first.
!
Fill until oil just covers diff pin.
RACE TIP
Put a little oil in the
diff housing before you
place the gears in.
Always make sure all
the bubbles in the
oil come out.
!
If the diff is too tight remove shim ‘B’.
!
If the diff is too tight remove shim ‘B’.
!
Use a small amount of diff oil on shim
‘D’ to hold the gear in place whilst
assembling the diff.
!
Use a small amount of diff oil on shim
‘D’ to hold the gear in place whilst
assembling the diff.
!
Rear Diff (Black Outputs)
BAG A - Step 10
A x3
B x2
C x1
Ø5 x Ø7 x 0.1mm Shim
Ø4 x Ø13 x 0.1mm Shim
Ø1.5 x 7.8 Pin
E x1
‘O’ Ring Ø3.69 x 1.8
D x1
Ø4 x Ø13 x 0.5mm Shim
A
B
D
C
E
BAG B - Step 11
A x3
B x2
C x1
Ø5 x Ø7 x 0.1mm Shim
Ø4 x Ø13 x 0.1mm Shim
Ø1.5 x 7.8 Pin
E x1
‘O’ Ring Ø3.69 x 1.8
D x1
Ø4 x Ø13 x 0.5mm Shim
A
EB
D
C
A
A
BAG B - Step 12
A x2
Ø3 x Ø9 x 0.5mm Shim
B x4
M2.5x 10 Csk Hd Screw
C x1
‘O’ Ring Ø21 x 1.0
C
BB
RACE TIP
Assemble the diff
without any oil first to
check gear mesh.
If the gear mesh is
correct, add oil.

06
Shorter
Longer
RH
Thread
LH
Thread
35.0mm
Note the shape of the turnbuckle.
This side of the turnbuckle
is the left hand thread.
!
RH
Thread
LH
Thread
52mm turnbuckle.
Front Camber Link.
!
Shorter
Longer
RH
Thread LH
Thread
25.5mm
Note the shape of the turnbuckle.
This side of the turnbuckle
is the left hand thread.
!
RH
Thread
LH
Thread
45mm turnbuckle.
Steering Link.
!
37.5mm
Note the shape of the turnbuckle.
This side of the turnbuckle
is the left hand thread.
!
RH
Thread
LH
Thread
56mm turnbuckle.
Rear Camber Link.
!
Shorter
Longer
RH
Thread LH
Thread
5.64mm
Note the shape of the turnbuckle.
This side of the turnbuckle
is the left hand thread.
!
RH
Thread
LH
Thread
24mm turnbuckle.
Servo Link.
!
Shorter
Longer
RH
Thread LH
Thread
!
Make a pair.
!
Make a pair.
!
Make a pair.
Front Camber Link
Steering Link
Rear Camber Link
Servo Link
BAG B - Step 13a
BAG B - Step 13b
BAG B - Step 13c
BAG B - Step 13d

07
LiPo Position
Pos R F
LiPo position. See
page 30 for more info.
!
Use the included foam
pad to reduce battery
movement.
!
RACE TIP
Remove the rear
gearbox cover when
running on sandy tracks.
This prevents the sand
from binding the
gearbox.
B
BAG B - Step 14
A x2
M3 Nyloc
B x2
D x2
M3 x 14 Csk Hd Screw
M3 x 5 Csk Hd Screw
M3 x 8 Csk Hd Screw
C x8
M3 Washer
E x2
M3 Thread Insert
F x2
A
A
BB
C
C
D
C
D
E
E
F
F
BAG B - Step 15
A x2
M3 x 6 Csk Hd Screw
M3 x 8 Csk Hd Screw
B x8
M3 x 8 Button Hd Screw
C x2
A
B
B
B
C
C
B
C
C

08
!
Assemble in high position.
!
The belt tensioner has two
bearing heights. High bearing
is used when the diff is set
high. Low bearing is used for
when the diff is set low. Mid
diff height may use either
high or low depending on
belt tension.
!
Make sure the one-way bearing
is visible from this side.
!
Re-oil the one-way bearing every
4 meetings. Never run it dry.
!
Make sure the friction plate
seats correctly.
STOCK SPEC
SEE PAGE
20
BAG B - Step 17
A x1
M3 x 4 Button Hd Screw
B x1
D x2
ø5 x ø11 x 4mm Bearing
ø1.5 x 11.8mm Pin
ø2.0 x 11.8mm Pin
C x1
A
B
C
D
D
BAG B - Step 18
A x1
ø5 x ø7 x 0.45mm Spacer
B x1
C x4
ø5 x ø11 x 4mm Bearing
ø5 x ø6.75 x 6.1mm Spacer
A
B
C
BAG B - Step 16
A x1
M3 x 12 Csk Hd Screw
M3 x 10 Cap Hd Screw
B x1
M3 x 12 Cap Hd Screw
C x1
M3 x 10 Button Hd Screw
D x1
M3 Washer
E x1
Black Alloy Washer 1.0mm
F x1
ø5 x ø9 x 3mm Bearing
ø5 x ø10 x 4mm Fl Bearing
G x2
H x2
A
H
F
B
C
D
E
G

09
Set the nut flush with the end of
the thread. This is a good starting
point for the slipper.
Read car settings on P31 for more
information.
!
Note. The deep recess
is this side.
!
F.A.B. (Front Adjustable Brake)
Set this nut flush with the end
of the shaft for now.
!
Use as little axle grease
as possible.
!
The gear should be
orientated with the
recess as shown
to ensure correct
gear mesh.
!
STOCK SPEC
SEE PAGE
20
Long boss.
!
Short boss.
!
BAG B - Step 20
A x1
M3 Nyloc
B x1
M3 x 8 Button Hd Screw
M3 x 12 Button Hd Screw
C x2
M3 Washer
D x3
BAG C - Step 21
A x1
ø5 x ø8 x 2.5mm Bearing
M4 Flanged Nyloc
B x1
B
A
C
D
D
D
A
B
BAG B - Step 19
A x2
M 3x 12 Button Hd Screw
B x1
E x2
ø5 x ø10 x 4mm Fl Bearing
M3 x 16 Button Hd Screw
C x2
ø1.5 x 7.8mm Pin
M3 Washer
D x1 A
A
B
D
E
C
C