Tekno RC EB48.3 Building Instructions

Introduction

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 connes 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 @ [e-mail] 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.

Additional equipment and parts needed:

2/3 channel radio transmitter and receiver
1/8th scale ESC and motor
High torque steering servo (240 oz/in torque minimum)
4-6s LiPo battery
1/8th scale buggy tires, wheels & CA glue
Paint for Body
MOD1 Pinion (TKR4171->TKR4190)

Tools needed:

Hex drivers 1.5mm (TKR1104), 2.0mm (TKR1105), 2.5mm (TKR1106)
Nut drivers 5.0mm (TKR1107, 5.5mm (TKR1108), 7.0mm (TKR1109)
17mm Wheel Wrench (TKR1116)
Hobby knife
Needle-nose pliers
Adjustable (Crescent) wrench (for shock assembly)
4mm turnbuckle wrench (TKR1103)

4mm arm reamer

Lexan Body Scissors

Thank you for purchasing the Tekno RC EB48.3 1/8th Scale Electric Competition Buggy Kit. The EB48.3
represents a continued evolution in the 1/8th scale electric class. Since the original EB48 was released

in 2012, we have continued to focus on rening and improving the vehicle to provide superior

performance and value to our customers. 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.

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 5000 wt oil to

1mm below full

DO NOT OVER FILL

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

TKR5112X

TKR5112X

TKR5150

TKR5144

3

Grease

Grease

Grease

Grease

Step

A-2

Step

A-1

Step

A-4

Step

A-3

*TKR5149A

(Option)

*

TKR5149A

(Option)

Apply grease to the groove

where the o-ring is placed

as well as the o-ring itself

Repeat for rear di

Fill FRONT with 5000 wt oil

Fill REAR with 5000 wt oil

to1mm below full

DO NOT OVER FILL

Repeat for rear di

Repeat for rear di

Repeat for rear di

*TKR5149A

(Option)

Apply grease to the groove in the outdrive

TKR5145B

TKR5144

TKRBB08165

Grease

Grease

TKR5149

TKR5150

*

TKR5149A

(Option)

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

Bag B

Front and Rear Differential
(overview)

TKR5151

TKR5149

TKR5150

TKR5150

TKR5143

TKR5113

TKR1325
M3x14mm Flat Head Screw

x8

TKR5144

TKR5145B

TKRBB08165
Ball Bearing(8x16x5mm)

x4

TKR5144
Differential 0-rings

x4

TKR5145B
Differential Shims (6x17mm)

x4

TKR1325 x4

TKR5114X

TKR5114X

TKR5144

4

Grease

Grease

Step

B-2

Step

B-1

Step

B-4

Step

B-3

TKR5075

TKR5012

TKR5152

TKR5012

TKR5268

TKR1222

TKR1222

TKR1525

TKR1222

TKR1525

TKR1222

TKR1226

TKRBB05114

TKR1525
M3x14mm Cap Head Screw

x6

TKR1603
M5x4mm Set Screw

x1

TKR1222
13x16x0.1mm Diff Shim

x2

TKR1226
5x7x0.2mm Shim

x1

TKR1603

TKRBB05114

TKRBB05114

TKR1226

TKRBB05114

TKR1603

TKR1525TKR1525

Grease

Front

Rear

Note: at spot

Note: at spot

Note: The front and rear
bulkheads are dierent.

The front has a much
greater output angle

compared to the rear.

*

may not be needed

*

may not be needed

Bag C

Front Gearbox
(overview)

5

Thread

Lock

Step

C-1

Step

C-2

Step

C-3

Note: TKR1222 and TKR1226 Shims - The gear mesh should be tight without any binding. TKR1226 should

always be installed. Then test 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 satised that you have the best

gear mesh possible continue to the next step. You may end up using only one shim on the gear side.

TKRBB05114
Ball Bearing (5x11x4)

x2

TKR5075

TKR5016B

TKR5152

TKR5016B

TKR5269

TKR1222

TKR1222

TKR1525

TKR1529

TKR1222

TKR1529

TKR5181

TKR1525

TKR1222

TKR1525

TKR1226

TKRBB05134

TKR1525
M3x14mm Cap Head Screw

x4

TKR1603
M5x4mm Set Screw

x1

TKR1222
13x16x0.1mm Diff Shim

x2

TKR1226
5x7x0.2mm Shim

x1

TKR1603

TKRBB05134

TKRBB05134

TKR1226

TKRBB05134

TKR1603

TKR1525TKR1525

Grease

Front

Rear

Note: at spot

Note: at spot

Note: The front and rear
bulkheads are dierent.

The front has a much
greater output angle

compared to the rear.

*

may not be needed

*

may not be needed

TKR1529
M3x20mm Cap Head Screw

x1

Bag D

Rear Gearbox
(overview)

6

Thread

Lock

Step

D-1

Step

D-2

Step

D-3

Note: TKR1222 and TKR1226 Shims - The gear mesh should be tight without any binding. TKR1226 should

always be installed. Then test 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 satised that you have the best

gear mesh possible continue to the next step. You may end up using only one shim on the gear side.

TKRBB05134
Ball Bearing (5x13x4)

x2

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

PO SITI ON SETT INGS

1 - RE AR WAR D LO W 2 - FO RE WA RD LO W

3 - RE AR WAR D HI GH 4 - FO RE WA RD HI GH

DO WNFO RCE SET TING S

(d ow nf or ce an gl es )

Note: Stock position setting is

# 4, Rearward High

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 as

picture above.

Note: Loosen the M3x4 set screw (TKR1601)

if

the anti-roll bar does not

turn freely.

Note: Do not over-tighten

TKR5049A

TKR5163

TKR5164

TKR5165

TKR5184

TKR5174

TKR1402

TKR1601

TKR5079A

TKR1522

TKR1522
M3x8mm 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

TKR1327

TKR1333
M3x40mm Flat Head Screw

x2

TKR1238
M4x10mm Droop Screw

x2

TKR5049A
Pivot Ball Sway Bar

x2

TKR5079A
Stabilizer Ball

x2

TKR1529
M3x20mm Cap Head Screw

x2

TKR1327
M3x16mm Flat Head Screw

x2

TKR1333TKR1333

TKR1238

TKR1529

TKR1601
M3x4mm Set Screw

x6

Step

F-1

Step

F-2

Step

F-3

TKR5020

TKR1402
M3x8mm Button Head Screw

x4

TKR5165

Note: With these stock

center dot settings,

Anti-Squat = 2° / Rear Toe = 3°

Use a #19 drill bit or

4mm reamer to ream

arms until hinge pin

falls through freely.

TKR5072

TKR5073

TKR5070

TKR5073

TKR5034

TKR5165

TKR1201

TKR1201

TKR1601

TKR5165

TKR5073
CV Joint Pin

x2

TKR1201
M3 Locknut Black

x4

Grease

Step

G-1

Step

G-2

Changes to the wheelbase have a dramatic eect on handling,

since it shifts the disribution 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 eect

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

TKR5071X
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.

TKR5199

TKRBB13194

TKRBB08165

TKR5071X

(Option)
*TKR5071B
*TKR5071C

(Option)

*TKR5199A

TKR1603