Tekno RC EB48.4 Building Instructions
Introduction
Additional equipment and parts needed:
•
Paint for body
•
1/8th scale ESC and motor system
•
High torque steering servo (at least 300 oz/in)
•
4s (4 cell, 14.8v) LiPo battery (at least 5000mAh)
•
1/8th scale tires, wheels & CA glue (or premounts)
•
MOD1 Pinion 15 tooth - 25 tooth (TKR4175 - TKR4185)
Tools needed:
•
Hex drivers 1.5mm (TKR1104), 2.0mm (TKR1105), 2.5mm (TKR1106)
•
Nut drivers 5.0mm (TKR1107, 5.5mm (TKR1108), 7.0mm (TKR1109)
•
Hobby knife
•
Needle-nose pliers
•
Shock tool (TKR1115) OR adjustable (Crescent) wrench (for shock assembly)
•
17mm Wheel Wrench (TKR1116)
•
4mm turnbuckle wrench (TKR1103) - 5.5/7.0 two sided wrench (TKR1119)
•
4mm arm reamer (or #19 drill bit)
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 marshalling 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 @ 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.
Thank you for purchasing the Tekno RC EB48.4 1/8th Scale 4WD Competition Electric Buggy Kit.
We are always working on new projects, so please check our website
at www.teknorc.com or our Facebook page at www.facebook.com/teknorc
regularly for the latest news, parts, and kits.
Take your time! When you work your way through these building instructions, keep an eye out
for the following important indicators below:
•
RED TEXT - This indicates important areas of the build process that should be observed.
•
YOUTUBE - We also have many useful build videos on Youtube, so be sure to check these out!
https://www.youtube.com/c/teknorc
Thread Lock icons
Thread lock is always used when a screw is inserted into any metal part. (Included with kit)
Thread
Lock
Grease icons
Grease is usually used on areas with movement and for sealing. (Included with kit)
Grease
Apply grease to the groove
where the o-ring is placed
as well as the o-ring itself
Apply grease to
the groove
where the o-ring
is placed
as well as the
o-ring itself
Apply grease to the groove in the outdrive
Apply grease to the
groove in the outdrive
Fill with 10,000 wt oil to
1mm below full
DO NOT OVERFILL
TKR5145B
TKR5144
Bag A
Center Differential
(overview)
TKR5237K
TKR5149
TKR5150
TKR5150
TKR5143
TKR5113
*TKR5237
*TKR5115
(Option)
TKR1325
M3x14mm Flat Head Screw
x4
TKR5144
TKR5145B
TKRBB08165
Ball Bearing (8x16x5mm)
x2
TKR5144
Differential 0-rings
x2
TKR5145B
Differential Shims (6x17mm)
x2
TKR1325 x4
TKR5149
TKRBB08165
Diff
Oil
TKR5114XB
TKR5114XB
TKR5150
TKR5144
3
Grease
Grease
Grease
Grease
Step
A-2
Step
A-1
Step
A-4
Step
A-3
*TKR5149A
(Option)
*
TKR5149A
(Option)
Fill FRONT with 10,000 wt oil
Fill REAR with 7,000 wt oil
to 1mm below full
DO NOT OVERFILL
Diff
Oil
Apply grease to
the groove
where the o-ring
is placed
as well as the
o-ring itself
Apply grease to the
groove in the outdrive
TKR5144
TKR5145B
TKR1325 x4
TKR5143
Grease
Grease
Apply grease to the groove
where the o-ring is placed
as well as the o-ring itself
Repeat for rear di
Repeat for rear di
Repeat for rear di
Repeat for rear di
TKR5149
TKR5150
*
TKR5149A
(Option)
Apply grease to the groove in the outdrive
TKR5145B
TKR5144
TKRBB08165
Grease
Grease
*TKR5149A
(Option)
TKR8151
TKR5149
TKR5150
TKR5150
TKR5143
TKR5113
TKR5114XB
TKR5114XB
TKR5144
Bag B
Front and Rear Differential
(overview)
TKR1325
M3x14mm Flat Head Screw
x8
TKRBB08165
Ball Bearing (8x16x5mm)
x4
TKR5144
Differential 0-rings
x4
TKR5145B
Differential Shims (6x17mm)
x4
4
Step
B-2
Step
B-1
Step
B-4
Step
B-3
TKR5012
TKR5012
TKR5268
TKR5075
TKR8152
Front
Inner Bulkheads
Rear
TKR1603
TKRBB05114
TKRBB05114
TKR8152
TKR1222
TKR1222
TKR1525
TKR1222
TKRBB05114
TKR1222
TKR1525 x6
TKR1226
TKR1226
TKRBB05114
TKR1525
TKR1525
M3x14mm Cap Head Screw
x6
TKRBB05114
Ball Bearing (5x11x4)
x2
x2
TKR1222
13x16x0.1mm Diff shim
TKR1603
Note: at spot
Note: at spot
TKR1603
M5x4mm Set Screw
x1
Grease
Bag C
Front Gearbox
(overview)
Step
C-1
Step
C-2
Step
C-3
5
Thread
Lock
TKR1226
5x7x0.2mm shim
x1
Note Step C-2: To properly shim the di, start by test tting the di with no shims and check for
side to side play. If no (or very little) play is present, then continue on to the next step. If you feel
excessive side to side play, then start by adding one shim on the gear side of the di assembly. This
will move the mesh tighter and remove any play. If the mesh is too tight at this point, move the shim
to the other side. In some rare cases, two shims may be necessary.
Note: The front and rear of
the car use dierent inner
bulkheads.
The front is angled
whereas the rear is
only slightly angled.
*These may not be needed
*These may not be needed
*These may not be needed
*These may not be needed
TKR1222
TKR1222
TKR1525
M3x14mm Cap Head Screw
x4
TKRBB05134
Ball Bearing (5x13x4)
x2
TKR1222
13x16x0.1mm Diff Shim
x2
TKRBB05134
TKRBB05134
TKR8152
TKR1603
TKR1525TKR1525
Front
Note: at spot
Rear
Note: at spot
TKR1603
M5x4mm Set Screw
x1
TKR1226
5x7x0.2mm shim
x1
Grease
Inner Bulkheads
TKR5075
TKR5016B
TKR8152
TKR5016B
TKR5269
TKR1222
TKR1529
TKR5181
TKR1525
TKR1222
TKR1525
TKR1226
TKRBB05134
TKRBB05134
TKR1603
TKR1525
TKR1529
TKR1529
M3x20mm Cap Head Screw
x1
Bag D
Rear Gearbox
(overview)
6
Step
D-1
Step
D-2
Step
D-3
Thread
Lock
Note: The front and rear of
the car use dierent inner
bulkheads.
The front is angled
whereas the rear is
only slightly angled.
*These may not be needed
*These may not be needed
*These may not be needed
*These may not be needed
TKR1226
Note Step D-2: To properly shim the di, start by test tting the di with no shims and check for
side to side play. If no (or very little) play is present, then continue on to the next step. If you feel
excessive side to side play, then start by adding one shim on the gear side of the di assembly. This
will move the mesh tighter and remove any play. If the mesh is too tight at this point, move the shim
to the other side. In some rare cases, two shims may be necessary.
TKR1529
TKR1201
TKR1221
TKR1221
TKR1201
TKR1529
TKR1529
M3x20mm Cap Head Screw
x4
TKR1524
M3x12mm Cap Head Screw
x6
TKR1201
M3 Lock Nut Black
x2
TKR1221
M3x8mm Washer
x2
Step
E-1
Step
E-2
TKR1524
TKR1524
TKR5181
Bag E
Low Profile Wing Mount
7
SETTINGS
1 2
3 4
1 2
3 4
POSITION SETTINGS
1 - REARWARD LOW 2 - FORWARD LOW
3 - REARWARD HIGH 4 - FORWARD HIGH
DOWNFORCE SETTINGS
(downforce angles)
Note: Stock position setting is
#2, Forward Low
Note: Stock downforce setting is 4
°
4
°
7
°
10
°
Stock Position
(”D” Block)
Stock Position
(”C” Block)
30.2
TKR1601
TKR1601
TKR1601
TKR5086
TKR5491 - 2.4mm
TKR5086
Install the sway bar ball onto the
sway bar wire until the end of
the wire is ush with the ball
collar as
pictured above.
Note: Loosen the M3x4 set screw (TKR1601)
if
the sway bar does not
turn freely.
Note: Do not overtighten
Front
Rear
Pivot Ball Orientation
TKR5049A
TKR8163
TKR8164
TKR5165
TKR8184
TKR5174
TKR1402
TKR1601
TKR5079A
TKR1522
TKR1522
M3x8mm Cap Head Screw
x2
TKR1525
M3x14mm Cap Head Screw
x2
Bag F
Rear End
*TKR5490 - 2.3mm
*TKR5492 - 2.5mm
*TKR5493 - 2.6mm
*TKR5494 - 2.8mm
*TKR5495 - 3.0mm
(Option)
Thread
Lock
Thread
Lock
8
TKR1525
TKR1533
M3x40mm Cap Head Screw
x2
TKR1238
M4x10mm Droop Screw
x2
TKR5049A
Pivot Ball Sway Bar
x2
TKR5079A
Stabilizer Ball
x2
TKR1529
M3x20mm Cap Head Screw
x2
TKR1533
TKR1238
TKR1529
TKR1601
M3x4mm Set Screw
x6
Step
F-1
Step
F-2
Step
F-3
TKR5020
TKR1402
M3x8mm Button Head Screw
x4
TKR5165
Use a #19 drill bit or
4mm reamer to ream
arms until hinge pin
falls through freely.
Note: With these stock settings,
Anti-Squat = 2° / Rear Toe = 2.5°
For reference, with center dot
inserts in both braces,
Toe = 3° / Anti-Squat = 2°
TKR8087
TKR8034
TKR5165
TKR1201
TKR1201
TKR1601
TKR5165
TKR1201
M3 Locknut Black
x4
Step
G-1
Step
G-2
Changes to the wheelbase have a dramatic eect on handling,
since it shifts the distribution of weight over the rear wheels.
This adjusts traction. By shortening the wheelbase at the rear, you
are placing more weight over the rear wheels.
Changes to the wheelbase also change the amount of sweep the
rear driveshaft will have. More driveshaft sweep creates an eect
similar to anti-squat, where the rear end gets pushed upwards on
throttle. This helps reduce chassis slap when landing jumps on throttle.
(FRONT)
(REAR)
TKR1603
M5x4mm Set Screw
x2
TKRBB13194
Ball Bearing (13x19x4)
x2
TKRBB08165
Ball Bearing (8x16x5)
x2
TKR5071
M3x16.8mm Pin
x2
TKR1601
M3x4mm Set Screw
x4
Bag G
Rear Hub/CVA Assembly
9
Thread
Lock
Note: Notch on pin
needs to line up
with set screw.
TKR8040A
TKRBB13194
TKRBB08165
TKR5071
*TKR5071B
*TKR5071C
*TKR5071X
(Option)
TKR1603
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