Tekno RC NB-48 Instruction Manual
Introduction
Thank you for purchasing the Tekno RC NB48 1/8th 4WD Nitro Competition Buggy. The NB48
represents the state-of-the-art in 1/8th nitro buggy technology. We hope you have as much fun
driving your new vehicle as we did developing it. We are always working on new projects, so please
check our website (www.teknorc.com) regularly for the latest news, parts, and kits. Thanks again.
Additional equipment and parts needed:
2/3 channel surface radio transmitter and receiver
High torque steering and brake servo
RX battery, switch harness
.21 nitro engine, tuned pipe, manifold, and glow plug
Fuel bottle, fuel, 1/8th buggy starter box, and glow ignitor
1/8th scale buggy tires, wheels & CA glue
Paint for body
Tools needed:
Hex drivers (1.5mm, 2.0mm, 2.5mm)
Nut drivers (5.0mm, 5.5mm, 7.0mm)
Hobby knife
Needle-nose pliers, screwdrivers
4mm turnbuckle wrench
4mm arm reamer
Lexan body scissors & reamer
Disclaimer: Tekno RC is not responsible or liable for any property or personal damage, loss,
or injury incurred as a result of using this product. This kit is meant for use by persons 14
years of age or older and in the strict connes of a legally permitted RC track or facility.
Warnings:
Always double-check that your radio gear is working properly before operating vehicle.
Never operate the vehicle indoors (unless the RC track is an indoor facility). Use caution
while operating vehicle so as not to collide with people who may be turn mashalling or
who might otherwise not be aware that a fast moving RC vehicle is in the vicinity.
Warranty:
We warrant that the parts included in this kit are free from defects. If you nd a defective
part in your kit, please contact us at info@teknorc.com and we will help you to resolve the
issue. We do not warranty parts that may be broken during operation of the vehicle or
otherwise. Refer to the end of this instruction manual for a listing of spare/replacement
and option parts. All spare parts and other info are available on our website (www.teknorc.com)
and through our network of domestic and international dealers and distributors.
Bag A
Front Differential
(overview)
TKR5114X
TKR5114X
TKR5150
TKR5113
TKR5143
TKR5149
TKR5150
TKR5151
Step
A-1
Note: Apply a liberal amount
of grease to the outdrives,
o-rings, and the large
di shims. This will ensure
smooth operation.
x4
TKR1325
M3x14mm Flat Head Screw
x2
TKR5144
Differential 0-rings
Grease
Step
A-3
TKR5150
TKR5145
TKR5144
TKRBB08165
Grease
Diff
Oil
Step
A-2
Step
A-4
Note: Apply a liberal
amount of grease in the
areas between the shims
and o-rings, as well as
around the outdrive and
both sides of the seal
TKR1325 x4
TKR5144
TKR5150
Grease
x2
TKR5145
Differential Shims (6x17mm)
x2
TKRBB08165
Ball Bearing(8x16x5mm)
TKR5145
Grease
TKR5143
Fill with 7000 wt oil to
1mm below full
3
Bag B
Center Differential
(overview)
TKR5112X
TKR5112X
Step
B-1
TKR5150
TKR5115
TKR5150
TKR5150
TKR5145
TKR5144
TKR5113
TKR5143
TKR5149
Step
B-2
TKR5150
Note: Apply a liberal amount
of grease to the outdrives,
o-rings, and the large
di shims. This will ensure
smooth operation.
x4
TKR1325
M3x14mm Flat Head Screw
x2
TKR5144
Differential 0-rings
x2
Grease
Step
B-3
TKRBB08165
Grease
Diff
Oil
Step
B-4
Note: Apply a liberal
amount of grease in the
areas between the shims
and o-rings, as well as
around the outdrive and
both sides of the seal
TKR1325 x4
TKR5115
TKR5144
TKR5145
Grease
TKR5145
Differential Shims (6x17mm)
x2
TKRBB08165
Ball Bearing(8x16x5mm)
Fill with 7000 wt
1mm below full
Grease
to
TKR5143
4
Bag C
Rear Differential
(overview)
TKR5114X
TKR5114X
Step
C-1
TKR5150
TKR5302
TKR5150
TKR5150
TKR5145
TKR5144
TKR5113
TKR5143
TKR5149
Step
C-2
TKR5150
Note: Apply a liberal amount
of grease to the outdrives,
o-rings, and the large
di shims. This will ensure
smooth operation.
x4
TKR1325
M3x14mm Flat Head Screw
x2
TKR5144
Differential 0-rings
x2
Grease
Step
C-3
TKRBB08165
Grease
Diff
Oil
Step
C-4
Note: Apply a liberal
amount of grease in the
areas between the shims
and o-rings, as well as
around the outdrive and
both sides of the seal
TKR1325 x4
TKR5302
TKR5144
TKR5145
Grease
TKR5145
Differential Shims (6x17mm)
x2
TKRBB08165
Ball Bearing(8x16x5mm)
Fill with 5000 wt
1mm below full
Grease
to
TKR5143
5
Bag D
Front Gearbox
(overview)
TKR5075
TKRBB05114
TKR1226
TKR1603
TKR5012
TKRBB05114
TKR5152
TKR5028
TKR1222
TKR5012
Step
D-1
Thread
Lock
TKR1226
TKR1222
TKR1603
TKRBB05114
Front
TKRBB05114
TKR5152
Rear
TKR1525
Note: at spot
bulkheads.
Note: at spot
Note: The front and rear of
the car use dierent inner
The front is angled
whereas the rear is oset
and only slightly angled.
Note: TKR1222 - The gear mesh should be as close as possible without any binding. Test the tment of the di
with both TKR1222 shims on the gear-side of the di. If the di turns freely without binding, continue to next
step. If the di binds and does not turn freely (it will make a grinding or crunching sound when spun), remove
one TKR1222 shim from the gear side and install it onto the other side of the di. Reassemble and test the mesh
again. If it is still binding, remove the second TKR1222 shim from the gear side and install it onto the other side
of the di. When you are satised that you have the best gear mesh possible continue to the next step.
x2
TKR1222
13x16x0.1mm Diff shim
x1
TKR1226
5x7x0.2mm shim
x6
TKR1525
M3x14mm Cap Head Screw
x1
TKR1603
M5x4mm Set Screw
x2
TKRBB05114
Ball Bearing (5x11x4)
Step
D-2
Step
D-3
TKR1222
Grease
TKR1222
TKR1525TKR1525TKR1525TKR1525
TKR1525TKR1525
6
Bag E
Center Differential Assembly
*Front engine configuration
(overview)
TKR5310
TKR1522
TKR1322
TKR5346
TKR1522
TKR5345
TKR5310
TKR5213
TKR5213
Step
E-1
Note: For optional
rear engine
conguration,
please see step
E1-RE on page 32
TKR5310
TKR5345
TKR5314
TKR5362
TKR5338
TKR5215
TKR1402
TKR5219
TKR5056
TKR5338
TKR1601
Step
E-2
TKR5314
TKR1402
TKR5338
TKR5057
TKR1404
TKR5058A
TKR5056
TKR5338
TKR5338
TKR1601
TKR5213
*TKR5213A
(Option)
X2
TKR1322
M3x8mm Flat Head Screw
x4
TKR1402
M3x8mm Button Head Screw
x1
TKR1404
M3x12mm Button Head Screw
x4
TKR1522
M3x8mm Cap Head Screw
x2
TKR1601
M3x4mm Set Screw
Pre-thread all brake
post holes with a
separate M3 screw
Step
E-3
TKR5056
Step
E-4
TKR5219
TKR5338
TKR5057
TKR1404
TKR5058A
TKR5056
(longer link)
more rear bias
(shorter link)
more front bias
TKR5338
TKR1402
Step
E-5
Note: For optional
rear engine
conguration,
please see step
E5-RE on page 32
TKR1522
Rear Front
Note: Orientation of the brake
cams TKR5215. The rear cam
should be pointing up & the front
cam should be pointing down.
TKR1322
TKR1522
TKR5310
x1
TKR5058A
Pivot Ball M3x5.8mm
No Flange
TKR5338
TKR1601
Thread
Lock
7
Bag F
Rear Gearbox
(overview)
TKR5075
TKR1226
TKR1603
TKRBB05134
TKR5152
TKR5029
TKR1222
TKR5026
Step
F-1
Thread
Lock
TKRBB05134
TKR1226
TKR5316
TKR1603
TKR1222
TKRBB05134
TKR5316
TKRBB05134
TKR5152
Front
Rear
TKR1525
TKR1525
Note: at spot
Note: The front and rear of
the car use dierent inner
bulkheads.
whereas the rear is oset
and only slightly angled.
Note: at spot
TKR1529
The front is angled
Note: TKR1222 - The gear mesh should be as close as possible without any binding. Test the tment of the di
with both TKR1222 shims on the gear-side of the di. If the di turns freely without binding, continue to next
step. If the di binds and does not turn freely (it will make a grinding or crunching sound when spun), remove
one TKR1222 shim from the gear side and install it onto the other side of the di. Reassemble and test the mesh
again. If it is still binding, remove the second TKR1222 shim from the gear side and install it onto the other side
of the di. When you are satised that you have the best gear mesh possible continue to the next step.
x2
TKR1222
13x16x0.1mm Diff Shim
x1
TKR1226
5x7x0.2mm shim
x4
TKR1525
M3x14mm Cap Head Screw
x1
TKR1529
M3x20mm Cap Head Screw
x1
TKR1603
M5x4mm Set Screw
x2
Step
F-2
Step
F-3
TKR1222
Grease
TKR1222
TKR1525TKR1525
TKR1529
TKRBB05134
Ball Bearing (5x13x4)
TKR1525
8
Bag G
Wing Mount
Top hole is stock position
(least amount of downforce)
Step
TKR1524
G-1
TKR5026
Most
downforce
TKR1524
Neutral
Least
downforce
Step
G-2
TKR1529
x2
TKR1201
M3 Lock Nut Black
x2
TKR1221
M3x8mm Washer
x8
TKR1524
M3x12mm Cap Head Screw
x4
TKR1529
M3x20mm Cap Head Screw
TKR1221
TKR1221
TKR1201
TKR1529TKR1529
9
Bag H
Rear Suspension
(overview)
TKR5021
TKR5013
TKR1327
TKR5033
TKR1402
TKR1525
TKR5049A
TKR5056
TKR5020
TKR5079A
TKR1443
TKR5021
TKR5030XT
TKR1333
TKR5013B
*TKR5013
(Option)
TKR5021
Note: The holes in the arms are purposely
tight and reaming the hinge pin holes
may be necessary for bind-free suspension
operation. Ream the hinge pin holes with
a 4mm reamer until the pins easily fall
through the hole without interference. This
will ensure consistent suspension action.
x2
TKR1327
M3x16mm Flat Head Screw
x2
TKR1333
M3x40mm Flat Head Screw
x4
TKR1402
M3x8mm Button Head Screw
x2
TKR1443
M4x10mm Button Head Screw
x2
TKR1525
M3x14mm Cap Head Screw
Step
H-1
TKR1402
Step
H-2
TKR1525
TKR5056
TKR1443
Stock Position
TKR1333TKR1333
x2
TKR5049A
Pivot Ball Sway Bar
x2
TKR5079A
Stabilizer Ball
TKR1327
Stock Position
10
Bag H
Rear Sway Bar
Step
H-3
TKR5084 - 2.6mm
(Option)
*TKR5080 - 2.2mm
*TKR5081 - 2.3mm
*TKR5082 - 2.4mm
*TKR5083 - 2.5mm
*TKR5085 - 2.8mm
*TKR5087 - 3.0mm
30.2
TKR1601
TKR5084
Note: Do not over-tighten
Step
H-4
TKR1601
Thread
Lock
TKR1522
TKR5086
TKR1522TKR1522
TKR1601
Loosen the M3x4 set screw
(TKR1601) if
does not
the anti-roll bar
turn freely.
x2
TKR1522
M3x8mm Cap Head Screw
x6
TKR1601
M3x4mm Set Screw
Install the Sway Bar Ball onto the
Sway Bar Wire until the end of
the wire is ush with the ball as
picture above.
11
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