Tekno NT-48 User manual
Introduction
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 scale starter box, and glow ignitor
1/8th scale truggy 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 & 5mm 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
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.
Thank you for purchasing the Tekno RC NT48 1/8th 4WD Nitro Competition Truggy. The NT48
represents the state-of-the-art in 1/8th nitro truggy 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.
TKR5144
Bag A
Front Differential
(overview)
TKR5114X
TKR5114X
TKR5403
TKR5149
TKR5150
TKR5150
TKR5143
TKR5113
Step
A-2
TKR1325
M3x14mm Flat Head Screw
x4
TKR5144
TKR5145
Step
A-1
Fill with 20,000 wt oil to
1mm below full
TKRBB08165
Ball Bearing(8x16x5mm)
x2
TKR5144
Differential 0-rings
x2
TKR5145
Differential Shims (6x17mm)
x2
TKR1325 x4
TKR5145
TKR5150
TKRBB08165
Diff
Oil
TKR5150
TKR5143
3
Step
A-4
Step
A-3
Grease
Grease
Grease Grease
Note: Apply a liberal amount
of grease to the outdrives,
o-rings, and the large
di shims. This will ensure
smooth operation.
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
M3x14mm Flat Head Screw
x4
Fill with 20,000 wt
to
1mm below full
TKRBB08165
Ball Bearing(8x16x5mm)
x2
TKR5144
Differential 0-rings
x2
TKR5145
Differential Shims (6x17mm)
x2
TKR5112X
TKR5112X
TKR5113
TKR5415
TKR5143
TKR5149
TKR5150
TKR5150
Grease
Grease
Grease
Grease
Bag B
Center Differential
(overview)
Step
B-1
Step
B-3
Step
B-4
Step
B-2
Diff
Oil
4
TKRBB08165
TKRBB08165
TKRBB08165
TKR5415
TKR5145
TKR1325 x4
TKR5144
TKR5143
TKR1325 x4
TKR5150
TKR5144
TKR5144
TKR5144
TKR5145
TKR5150
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
Note: Apply a liberal amount
of grease to the outdrives,
o-rings, and the large
di shims. This will ensure
smooth operation.
TKR1325
M3x14mm Flat Head Screw
x4
Fill with 10,000 wt
to
1mm below full
TKRBB08165
Ball Bearing(8x16x5mm)
x2
TKR5144
Differential 0-rings
x2
TKR5145
Differential Shims (6x17mm)
x2
TKR5114X
TKR5114X
TKR5113
TKR5404
TKR5143
TKR5149
TKR5150
TKR5150
Grease
Grease
Grease
Grease
Bag C
Rear Differential
(overview)
Step
C-1
Step
C-3
Step
C-4
Step
C-2
Diff
Oil
5
TKRBB08165
TKR5404
TKR5145
TKR1325 x4
TKR5144
TKR5143
TKR5150
TKR5144
TKR5145
TKR5150
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
Note: Apply a liberal amount
of grease to the outdrives,
o-rings, and the large
di shims. This will ensure
smooth operation.
TKR1525TKR1525TKR1525TKR1525
TKR5012
TKR5012
TKR5428
TKR5075 TKR5405
Front
Rear
TKR1603
TKRBB05114
TKRBB05114
TKR5405
TKR1222
TKR1222
TKR1525TKR1525
TKR1529
TKR1222
TKRBB05114
TKR1222
TKR1525 x6
TKR5401
TKR1226
TKR1226
TKRBB05114
TKR1525
M3x14mm Cap Head Screw
x6
TKRBB05114
Ball Bearing (5x11x4)
x2
x2
TKR1222
13x16x0.1mm Diff shim
TKR1529
TKR1603
Grease
Note: at spot
Note: at spot
TKR1603
M5x4mm Set Screw
x1
TKR1529
M3x20mm Cap Head Screw
x2
Bag D
Front Gearbox
(overview)
Step
D-1
Step
D-2
Step
D-3
6
Thread
Lock
TKR1226
5x7x0.2mm shim
x1
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.
Note: The front and rear of
the car use dierent inner
bulkheads.
The front is angled
whereas the rear is oset
and only slightly angled.
TKR5213
TKR5213
TKR1522
TKR5310
TKR5345
TKR1522
TKR5213
TKR5314
TKR5338
TKR1601
TKR1601
TKR5338
TKR5338
TKR5338
TKR5338
TKR1601
TKR5338
TKR5338
TKR5362
TKR1404
TKR5056
TKR5058A
TKR5345
TKR5310
TKR5056
TKR1402
TKR5057
TKR5338
TKR1402
TKR5314
TKR5310
TKR5310
TKR5310
TKR5310
TKR5310
TKR5310
TKR5310
*TKR5213A
(Option)
Bag E
Center Differential Assembly
*Front engine
configuration
(overview)
Step
E-1
Step
E-3
Step
E-4
Step
E-5
Step
E-2
7
TKR1522
TKR5310
TKR1322
TKR1522
TKR5215
TKR5219
TKR5219
TKR5057
TKR1404
TKR5058A
TKR5056
TKR5056
TKR5341
TKR1322
Pre-thread all brake
post holes with a
separate M3 screw
CA
glue
Note: Use CA
glue to attach
risers to di support bottoms
CA
glue
Note:
Use CA
glue to attach riser
to di brace bottom
Note: For optional
rear engine
conguration,
please see step
E5-RE on page 32
Note: Orientation of the brake
cams TKR5215. The rear cam
should be pointing up & the front
cam should be pointing down.
Rear Front
(longer link)
more rear bias
more front bias
(shorter link)
Note: For optional
rear engine
conguration,
please see step
E1-RE on page 32
Note: Thread brake
posts all the way in.
Fit the brake discs
and back posts o
until center di
moves freely.
TKR1322
M3x8mm Flat Head Screw
X2
TKR1402
M3x8mm Button Head Screw
x4
TKR1404
M3x12mm Button Head Screw
x1
TKR1522
M3x8mm Cap Head Screw
x4
TKR1601
M3x4mm Set Screw
x2
TKR5058A
Pivot Ball M3x5.8mm
No Flange
x1
Thread
Lock
TKR5075
TKR5316
TKR5316
TKR5401 TKR5429
TKR1222
TKR1222
TKR1525
TKR1529
TKR1222
TKR1529
TKR1525
M3x14mm Cap Head Screw
x4
TKRBB05134
Ball Bearing (5x13x4)
x2
TKR1529
M3x20mm Cap Head Screw
x2
TKR1222
13x16x0.1mm Diff Shim
x2
TKRBB05134
TKRBB05134
TKR5405
TKRBB05134
TKR1603
TKR1603
TKR1525TKR1525
Grease
Front
Note: at spot
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.
Rear
Note: at spot
TKR1525
TKR1525
TKR1222
TKR1226
TKRBB05134
TKR1603
M5x4mm Set Screw
x1
TKR1226
5x7x0.2mm shim
x1
Bag F
Rear Gearbox
(overview)
8
Step
F-1
Step
F-2
Step
F-3
Thread
Lock
Note: The front and rear of
the car use dierent inner
bulkheads.
The front is angled
whereas the rear is oset
and only slightly angled.
TKR5405
TKR1226
TKR1524
TKR1524
TKR1529TKR1529
TKR1529
TKR1201
TKR1221
TKR1221
Most
downforce
Neutral
Least
downforce
Top hole is stock position
(least amount of downforce)
TKR1201
TKR5026
TKR1529
M3x20mm Cap Head Screw
x4
TKR1524
M3x12mm Cap Head Screw
x8
TKR1201
M3 Lock Nut Black
x2
TKR1221
M3x8mm Washer
x2
Step
G-1
Step
G-2
Bag G
Wing Mount
9
TKR1333TKR1333
TKR1327
TKR5430
TKR5013B
TKR5020
TKR5013
TKR5056
TKR5079A
TKR5021
TKR5021
TKR5021
TKR5049A
TKR1443
TKR1525
TKR1525
TKR1327
TKR1443
TKR5056
TKR1333
TKR1333
M3x40mm Flat Head Screw
x2
TKR1443
M4x10mm Button Head Screw
x2
TKR5049A
Pivot Ball Sway Bar
x2
TKR5079A
Stabilizer Ball
x2
TKR1525
M3x14mm Cap Head Screw
x2
TKR1327
M3x16mm Flat Head Screw
x2
Stock Position
Stock Position
Step
H-1
Step
H-2
*TKR5013
(Option)
Bag H
Rear Suspension
(overview)
10
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.
30.2
TKR1601
TKR1601
TKR1522
TKR1601
TKR5086
TKR5493 - 2.6mm
TKR5086
TKR1522
M3x8mm Cap Head Screw
x2
TKR1601
M3x4mm Set Screw
x6
Install the Sway Bar Ball onto the
Sway Bar Wire until the end of
the wire is ush with the ball as
picture above.
Loosen the M3x4 set screw
(TKR1601) if
the anti-roll
bar does not
turn freely.
Note: Do not over-tighten
TKR1522
Bag H
Rear Sway Bar
(Option)
*TKR5490 - 2.3mm
*TKR5491 - 2.4mm
*TKR5492 - 2.5mm
*TKR5494 - 2.8mm
*TKR5495 - 3.0mm
Step
H-3
Step
H-4
Thread
Lock
11
TKR5472
TKR5073
TKR5070
TKR5040
TKRBB13194
TKRBB08165
TKR5073
TKR5071
TKR1603
TKR5034
TKR5021
TKR1201
TKR1201
Hole "B" is the stock position
*Only use hole A in the arm with
hole A in the hub
*Only use hole B in the arm with
hole B in the hub
The outside hole oers greater stability and
is
recommended for bumpy open tracks.
Inside hole oers greater amount of steering
and is recommended for at technical tracks.
A
B
A
B
Note: notch on pin
needs to line up
with set screw.
Note: Do not overtighten rear
outer hinge pin (TKR5034).
Hinge pin should rotate freely.
Note: Rear hubs (TKR5040)
are left/right interchangeable.
TKR5071X
M3x16.8mm Pin
x2
TKR5073
CV Joint Pin
x2
TKR1603
M5x4mm Set Screw
x2
TKR1201
M3 Locknut Black
x4
TKRBB13194
Ball Bearing (13x19x4)
x2
TKRBB08165
Ball Bearing (8x16x5)
x2
*TKR5071B
*TKR5071C
*TKR5071X
(Option)
Step
I-1
Step
I-2
Grease
Bag I
Rear Hub/CVA Assembly
12
Thread
Lock
TKR5051
TKR5450
TKR5051
TKR5052A
This side mounts on hub
Note: no ange
This side mounts on shock tower
Note: ange
TKR5053A
70.00
Note: Notch always goes on
left side of vehicle
1
2
34
5
6
A
B
C D
Stock position is 1 / B
TKR1529
TKR1201
Right
TKR5051
This side mounts on hub
Note: no ange
This side mounts on shock tower
Note: ange
TKR5051
Left
TKR5450
TKR1201
M3 Locknut Black
x4
TKR1529
M3x20mm Cap Head Screw
x4
TKR5053A
Pivot Ball M3x6.8mm
No Flange
x2
TKR5052A
Pivot Ball M3x6.8mm
x2
TKR5053A
TKR5052A
Step
I-3
Step
I-4
Bag I
Rear Camber Links
13
TKR5020
TKR5017
TKR5079A
TKR5056
TKR5049A
TKR5436
TKR5017
TKR5021
TKR5021
TKR1333
TKR1327
TKR1525
TKR1443
TKR5049A
Pivot Ball Sway Bar
x2
TKR5079A
Stabilizer Ball
x2
TKR1443
M4x10mm Button Head Screw
x2
TKR1525
M3x14mm Cap Head Screw
x2
TKR1327
M3x16mm Flat Head Screw
TKR1333
M3x40mm Flat Head Screw
x2
x2
TKR5079A
TKR1525
TKR1525
Stock Position
Stock Position
Step
J-1
Step
J-2
Bag J
Front Suspension
(overview)
14
TKR1333
TKR1443
TKR1327
TKR1522
M3x8mm Cap Head Screw
x2
TKR1601
M3x4mm Set Screw
x6
30.2
TKR1601
TKR1601
TKR1522
TKR1601
TKR5086
TKR5483 - 2.6mm TKR5086
Install the Sway Bar Ball onto the
Sway Bar Wire until the end of
the wire is ush with the ball as
picture above.
Loosen the M3x4 set screw
(TKR1601) if
the anti-roll bar
does not
turn freely.
TKR1601
TKR1522
(Option)
*TKR5480 - 2.3mm
*TKR5481 - 2.4mm
*TKR5482 - 2.5mm
*TKR5484 - 2.8mm
*TKR5485 - 3.0mm
Step
J-3
Step
J-4
Thread
Lock
Bag J
Front Sway Bar
15
Note: Do not over-tighten
TKR5472
TKR5073
TKR5042B
TKR5041
TKR5054A
TKR1603
TKRBB08144
TKRBB13194
TKR1445
TKR1445
TKR5071
TKR5073
TKR5070
TKR1448
TKR1447
TKR5055A
TKR5054A
TKR5073
CV Joint Pin
x2
TKR5071
M3x16.8mm Pin
x2
TKR1445
M4x14mm Button Head Screw
x4
TKR1447
M4x16mm Button Head Screw
x2
TKRBB13194
x2
TKRBB08144
x2
TKR5054A
Spindle Pin Sleeve
x4
TKR5055A
Suspension Pin Sleeve Front
x4
TKR1448
M4x18mm Button Head Screw
x2
*TKR5071B
*TKR5071C
*TKR5071X
(Option)
*TKR5042
(Option)
Step
K-1
Step
K-3
Grease
TKR1603
M5x4mm Set Screw
x2
TKR1401
TKR1221
Step
K-2
Bag K
Front Steering
16
Note: notch on pin
needs to line up
with set screw.
Note: Fully tighten screws
(TKR1445), then loosen until
spindles (TKR5041) move freely.
This will ensure smooth
operation and minimize play.
Note: Fully tighten screws
(TKR1447, TKR1448), then loosen
until spindles carriers (TKR5042B)
move freely. This will ensure
smooth operation and minimize play.
Note: The steering stops provide adjustable
travel limiters that you can adjust to your
driving style. For very tight tracks you may
want to experiment with less limiting washers
(more steering travel). However, with too
much steering travel the rear end can lose
traction more easily coming out of corners.
After months of testing on dierent track
surfaces, 3 washers is the most consistent setting.
Thread
Lock
TKR1221
M3x8mm Washer
x8
TKR1401
M3x6mm Button Head Screw
x2
TKR1529
61.80
A
B
Stock position is 1 / A
TKR1529
TKR1201
TKR1201
TKR1201
M3 Lock Nut Black
x4
TKR1529
M3x20mm Cap Head Screw
x4
TKR5052A
Pivot Ball M3x6.8mm
x2
TKR5053A
Pivot Ball M3x6.8mm
No Flange
x2
TKR5051
TKR5451
TKR5051
TKR5052A
This side mounts on hub
Note: no ange
This side mounts on shock tower
Note: ange
TKR5053A
Right
TKR5051
This side mounts on hub
Note: no ange
This side mounts on shock tower
Note: ange
TKR5051
Left
TKR5451
TKR5053A
TKR5052A
1
2
34
5
6
Step
K-5
Step
K-4
Note: Notch always goes
on
left side of vehicle
Bag K
Front Camber Links
17
TKR1323
TKRBB050825
77.70
Note: Notch always
goes on
the left side of the
vehicle
Please note pivot ball orientation
Note: Apply a small
drop of oil for easy
o-ring installation.
Stock Position
(in center hole)
TKR5100
TKR5056
TKR5056
TKR5056
TKR5423
TKR5423
TKR5052A
TKR5052A
TKR5101X
TKR5231
TKR1201
TKRBB06103
TKRBB06103
TKR1529
Note: Stock bumpsteer setting is
2 washers
above and 2 below the steering ball link.
4 x TKR1221
TKR1221
TKR1221
TKR5122
TKRBB06103
TKRBB06103
TKR5104
TKR5122
TKR1323
TKR1323
TKR1201
TKR1529
TKR1221
TKR1201
TKR5103
TKR1323
M3x10mm Flat Head Screw
x2
TKR1201
M3 Lock Nut Black
x2
O-ring 16x12x2
TKR5231
x1
TKRBB06103
Ball Bearing (6x10x3)
x4
TKRBB050825
Ball Bearing (5x8x2.5)
x4
TKR1529
M3x20mm Cap Head Screw
x2
TKR5052A
Pivot Ball M3x6.8mm
x4
TKR1221
M3x8mm Washer
x8
TKR5052A
TKR5052A
TKR5052A
TKR5052A
Step
L-1
Step
L-2
Step
L-3
Step
L-4
Thread
Lock
Thread
Lock
Right
Left
Note: Tighten nut all the way
down, then back it o 4 full turns
Bag L
Steering Assembly
(overview)
18
TKRBB050825
TKR1201
TKR1443
TKR5102A
TKR1443
Note: On steps M-2 and M-3, do not
tighten the
screws all the way down until
the assembly steps are complete. Position
the entire front assembly on the chassis
and tighten each screw evenly.
TKR1522
TKR5018
TKR1443
TKR1346
TKR1344
TKR1344
TKR1343
TKR5362
Note: Inititial bumpsteer setting
is four
washers above the steering ball link.
TKR5342
TKR1529
TKR1221
TKR1522
M3x8mm Cap Head Screw
x1
TKR1346
M4x15mm Flat Head Screw
x2
TKR1343
M4x10mm Flat Head Screw
x2
TKR1344
M4x12mm Flat Head Screw
x4
TKR1201
M3 Lock Nut Black
x2
TKR1443
M4x10mm Button Head Screw
x5
TKR1529
M3x20mm Cap Head Screw
x2
TKR1221
M3x8mm Washer
x8
Step
M-3
Step
M-1
Step
M-2
Thread
Lock
Thread
Lock
Note: Step M-1:
Line up the bottom of the
steering posts (TKR5102A)
with the corresponding recess
cut in the
chassis
.
Bag M
Front End Assembly
19
TKR5377
TKR1443
TKR1343
TKR5362
TKR1344
TKR1344
TKR5476
TKR1343
M4x10mm Flat Head Screw
x4
TKR1443
M4x10mm Button Head Screw
x2
TKR1344
M4x12mm Flat Head Screw
x9
Step
N-1
Step
N-2
Note: Two rear chassis braces are included in
the kit. The longer brace is the stock brace.
The short brace is optional. The longer brace
will provide less ex. Adding the short brace
will further stien the chassis. Running only
the short brace will provide the most ex.
*TKR5476A
(Option)
Bag N
Center/Rear Assembly
20
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