udiRC UD1805 1-18 Udisport Desert Racing Buggy Instruction Manual

June 3, 2024
Udirc

UD1805 1-18 Udisport Desert Racing Buggy

UD1805 / UD1805PRO / UD1806 / UD1806PRO
1/18 UDISPORT DESERT RACING BUGGY
OPERATING
INSTRUCTIONS
FULL PROPORTIONAL REMOTE CONTROL UDIRACING SERIES V1.0

This product is suitable for users over 14 years old. Please read this instruction manual carefully befores use.

Important Notice

Our company’s products are improving all the time,design and specifications are subject to change without notice. All the information in this manual has been carefully checked to ensure accuracy, if any printing errors, our company reserve the final interpretation right.

THANK YOU
Thank you for choosing this product. The remote control model is designed to be fun to drive and uses high quality parts to improve durability and performance. The instruction manual you are reading is to make the product easier to understand and explain more thoroughly. We hope you enjoy this remote control model car. If you have any problems or need help, please call us and we will try our best to help you. You can also contact us through the following website: www.udirc.com.
This is a radio control model product, not a toy! which needs regular maintenance to obtain the best performance. If you don’t do regular maintenance, it can affect performance. We have all the necessary parts and accessories to ensure that your vehicle maintains its best performance.
The warning or attention symbol will alert you to potentially dangerous steps. Please read and understand the instructions carefully before proceeding.

WARNING

ATTENTION

Failure to follow these instructions may result in injury to yourself or others. You may also cause property damage or model damage.

WARNING

The model must stop immediately and check for the reasons when it is operating abnormal. Keep in mind that people around you may also operate a radio control model. The motor is a heating part, please do not touch it. If you don’t use the model for a long time, please raise the chassis to let the wheels hang in the air. Please keep the package or instructions as they contain important information.

NO!

The product contains small and sharp parts. Keep away
from children.

Be sure to read the instruction manual in detail, or ask for the person with
experience in operation, and read
with the guardian if necessary.

DO NOT operate in public streets or crowded places
to avoid accidents.

Cutters, nippers and screwdrivers need
careful handling.

DO NOT put the model in high temperature, humidity and direct sunlight.
02

Please don’t reverse contact or disassemble the battery,
as this way will cause the
battery to explode.

WARNING

Before Operation

Read the instruction manual in detail, or ask for the person with experience in operation, and read with the guardian if necessary.
Make sure all screws and nuts are properly tightened. The remote control and the vehicle should always use the battery with saturated power to avoid
losing control of the model. Please make sure that the throttle trigger is in the center position.

During Operation First turn on the power of the remote control, and then turn on the power of the model. Use this product only in open areas (>4x4m) without pedestrians. DO NOT put fingers or any objects inside rotating and moving parts.

After Operation First turn off the model power, then turn off the remote control power. And take out the battery. Daily maintenance is required after the model is used.

Battery safety

Please read and observe all precautions before use. Improper use of battery may cause danger. It is normal for the battery to heat up after operation. Please be careful when handling the battery.
If the wire is worn, it is easy to short circuit and cause fire. Wasted li-ion battery must not be placed with household trash. please contact local environmental or
waste agency or the supplier of your model or your nearest li-ion battery recycling center.

  1. After use, please disconnect the power supply and pull out the plug; 2) Remove the battery from the model before charging; 3) DO NOT charge the battery when it is bulging or expanding; 4) Keep away from damp, corrosive environment and heat source; 5) Please charge the battery under adult supervision; 6) Pay attention to the polarity of the battery when installing or replacing the battery; 7) Different types of batteries or old and new batteries should not be mixed; 8) DO NOT short circuit any terminals; 9) DO NOT short circuit, decompose or put the battery into fire; 10) Please use the attached special charger to charge the battery.

WARNING
Warning: The product should only be used by adults and children over 14 years. Adult supervision is required for children under 14 years.
Hinweis: Dieses Produkt ist für die Erwachsene und die Kinder ab 14 Jahren. Die kinder unter 14 Jahren müssen von Erwachsenen beaufsichtigt werden.
Avertissement: Ce produit est destiné aux adultes et aux enfants de plus de 14 ans. Les enfants de moins de 14 ans doivent être surveillés par des adultes.
Avvertimento: Questo prodotto è destinato all’uso per i adulti e bambini di età superiore ai 14 anni. I bambini di età inferiore ai 14 anni devono essere sorvegliati da un adulto.
Advertencia: Este producto es para adultos y niños mayores de 14 años. Los niños menores de 14 años deben ser supervisados por adultos.
03

DANGER!
Only suitable for age 14+

Product maintenance

When not in use, remove the battery from the model and transmitter.

Please remove the sediment and dirt on the car completely and must be kept dry after play.

Apply lubricating oil to external metal parts.

Please separate the car and battery when not in use.

Model Battery

Troubleshooting

Cause
Remote control car doesn’t work
Long frequency matching time Operation delay The vehicle moves forward (backward) automatically or makes a sound of “en….” The indicator of the transmitter is not bright The steering of the model car has no force or function

Solution
When the battery is low, charger it in time or replace it with new battery. Please make sure the wheel or drive shaft is entangled by debris and remove it. The motor may have reached the expiration date, replace with the same motor. Please keep the car within effective control distance. When the battery of the transmitter in low battery, please replace it in time. Check whether all parts of the model car are damaged and replace them. High temperature protection is triggered when the ESC’s temperature is too high, Please pause for 10 minutes before using. The signal is disturbed, restart the car and the transmitter. Please make sure there are obstacles or interferences.
Restart the transmitter
Please make sure the battery is installed correctly or replace it with a new one. If the transmitter doesn’t work,please replace it with a new one. Increase the percentage of steering. Please make sure the steering is it include the sundries or some parts damaged.
04

Model Car Summary

1805-006

1805-012

1805-014

1806-003B

1601-015 Power switch
1601-007

1805-004

1805-006

1805-007

1805-007 1805-008 1805-011

1601-013

1601-011 1805-010

1601-035

1601-012

1805-009

1805-015 1601-016

1805-003 1601-004

05

1805-006

1806-003A

1806-003A

S1701

1805-005

ESC01W Power switch
1805-002 1805-001

1806-001 1806-002
06

Headlight Taillight

Electronic speed controller
1601-011
Antenna
Steering servo

Model Battery

Motor

Steering servo

ESC01W
Taillight

Headlight

Power switch Antenna
07

Model Battery Motor

Preparation of transmitter

OFF

ON

Power switch

Transmitter function main interface

Default steering wheel direction Turn left / Turn right

Car lights control button
The car lights color mode can be switched and the car lights can be switched off.

Electronic stability system (ESP) gyroscope action ratio adjusting knob

Low

High

Steering trim knob

Default throttle trigger direction Forward / Backward / Brake
Throttle speed limit switch Low speed mode: Throttle output limited to 50%.
Medium speed mode: Throttle output limited to 75%.
High speed mode: 100% throttle output.

Steering range adjustment knob

Min

Max

Throttle reverse

Steering reverse

Car status indicator (green)
When the battery of cars is in low battery, the indicator light will flash. It remind operator to replace the battery as soon as possible to avoid accidents.

Transmitter indicator (red)
When the signal is weak or interrupted, the indicator will flash quickly. When the power of the transmitter is low, the indicator light will flash slowly. The above situation should be handled as soon as possible to avoid accidents.

08

Adjustment of gyroscope action ratio
This product has the function of ESP car stability system, which can effectively correct the car attitude and direction when the car skids or loses control. The function and sensitivity of the car gyroscope sensor can be adjusted through the ESP knob of the transmitter.

The action ratio decreased

The action ratio increases

Steering range adjustment
The steering range adjustment knob can be used to adjust the left and right steering angle of the car.

Minimum steering angle

Maximum steering angle

Steering trim
When the steering wheel is in the center position, if the car can not drive in a straight line, please use the steering trim knob to adjust and correct the left and right directions of the front wheels.

When the front wheel is left, the knob rotates to the right.

When the front wheel is right, the knob rotates to the left.

ATTENTION

  1. There is no ESP function when the remote control car retreats. 2) When the remote control car is moving forward, it is necessary to pull the throttle trigger
    backward to reach more than 30% of the stroke before the gyroscope starts to work. 3) With the increase of car speed, the gyroscope action ratio also increases synchronously.

09

Assembly of the transmitter battery

Battery Cover

Note Direction. 1.5V×4 AAA Batteries(not included)
Open battery cover at the bottom of transmitter. Install batteries. Follow the direction of batteries designated in the inside of the battery box.
Model Battery charging

The battery contains less power when leaving the factory, so it must be charged and saturated before use.

Battery input port

Charger output port

Connect the attached charger with the model battery charging input port, and then connect other USB output ports. When charging, the charging indicator is flashing, and the indicator is always on after charging. Do not put the battery in the model when charging. The battery must be cooled before charging.

Model Battery

Charging Power
Charger box

USB adapter (not included)

Warning: someone must be watching while charging.
Please use the charging box provided with the product and make sure it is connected properly.

Assembly of model battery

  1. Pull out the body clips

Remove the body

10

  1. Pull out the clips, and remove the battery hold-down.

ESC input port

Output port

Model Battery

  1. Put the battery into the battery compartment, Battery hold-down reset clips reset and then connect with the ESC.

  2. Reset the bodyshell

1>
OFF

Operational guidance
Frequency matching

ON 1) Turn on the power of the
transmitter, and the red indicator light will flash quickly.

Do not touch the throttle trigger when turning on thepower of the transmitter.

Consistent direction
Place the model on level ground 11

1601-011 Power on method 2) Press for 2 second to turn on the power. The lights flash and
enter the frequency matching state. Press for 2 second to turn off the power.
1601-011
ESC01W Power on method 2) Press for 2 second to turn on the power. The lights flash and
enter the frequency matching state. Press for 2 second to turn off the power.

ESC01W

After the car power is turned on, the transmitter and the car will carry out automatic frequency matching. When the indicator light of the transmitter and the car lights are always on, the frequency matching is successful. In the process of frequency matching, the car lights will flash rapidly. At this time, the gyroscope is being calibrated automatically. Please place the car on the level ground to complete this operation. After calibration, the car lights return to normal.

2>

Manipulation method

Throttle trigger Go forward

Throttle trigger Go backward

12

Steering wheel

Turn left

Turn left and move forward

Throttle trigger

Steering wheel

Go forward

Turn left

Steering wheel

Turn right

Turn right and move forward

Throttle trigger

Steering wheel

Go forward

Turn right

Turn left and move backward

Throttle trigger

Steering wheel

Turn right and move backward

Throttle trigger

Steering wheel

Go backward Low speed

Turn left High speed

Go backward

Turn right

Brake/Backward

Pull the throttle trigger back gently and the car will move forward slowly.

The throttle trigger is pulled to the maximum, and thecar moves forward quickly.
13

When the car is moving forward, the throttle trigger is pushed forward and the car stops moving. After the throttle trigger returns to the middle position, it pushes forward again, and the car moves backward.

Parts exploded view
Installation of wheels

Hexagon nut wrench

1601-016 Wheel

1601-022

1601-004
Wheel
Use the hexagon nut wrench to take out the nut fixing the tire(1601-004) and remove the old tires. Put on new tires.
Front and rear shock absorbers

14

Assembly of front suspension arm

1601-050

1805-011

1601-063 1601-051 1601-021

1805-009

1805-015 1601-022

1601-017

1805-009

1601-019

1601-063

1805-011

1805-010

1601-026

Assembly of rear suspension arm
1805-012

1601-050

1601-050

1805-009

1601-021

1805-015 1601-022
1601-026

1601-017

1805-012 1601-051
15

Assembly of front bumper

1805-006

1601-034

1601-064 1601-055

1601-055

1805-008

1601-039

1601-035

1601-056 1601-056 1601-062

Assembly of rear bumper

1805-006

1601-034

1601-055

1601-042

1805-008

1601-039

1601-035

1601-056 16

Assembly of steering servo

1601-024

1601-032

Steering servo

1601-031 1601-031

1601-024

1601-030

1601-031

Assembly of front(rear) differentials

1601-033

1601-029A 17

Rear sopiler
1805-014 1601-002 1805-014

1601-066

1805-006

1805-006 1601-034
1601-062 1601-024

Upper chassis
1601-060
1601-015

1601-056

1601-049

1805-006

1601-034

1601-054

1601-054

1601-054

1601-013 18

1601-056

1601-060

1601-024

Main propeller shaft system
1601-036 1601-017

1601-017

1601-041

1601-021 1601-038

Assembly of chassis

1601-062

1601-056 1601-056

1601-054

1601-056

1601-053

19

1805-001

Buyable accessories

1806-001

1601-002

1805-002

Body assembly 1806-002

Body assembly 1805-003

Body clips × 4 1806-003A

Headlight group(UD1805) 1806-003B

Headlight group(UD1806) Wheel × 2

1805-004

1805-005

Wheel × 2 1601-007

Wheel × 2 S1701

Motor assembly(390) 1805-006

Motor assembly(Brushless) Steering servo(390 Motor) Steering servo(Brushless)

1805-007

1805-008

1601-011

Front & Rear shock tower assembly
ESC01W

Front & Rear shock absorber
1601-012

Front & Rear bumper assembly
1601-013

Electronic speed controller (390 Motor)
1601-015

Electronic speed controller Model battery (Brushless)

Battery hold-down 20

Upper chassis

1601-016

1805-009

1805-010

1805-011

Wheel adapters × 4 1805-015

Front & Rear wheel carriers assembly
1805-012

Adjustable steering linkage Suspension arms (front)

1601-029A

1601-030

Driveshaft assembly × 2

Suspension arms (rear)

1601-031

1601-032

Differential assembly 1601-034

Servo saver 1601-035

Steering bellcrank 1601-036

Rudder connecting rod 1601-037A

Differential housing 1601-037B

Chassis 1601-038

Motor gear 1601-039

Motor mounts(390 Motor) Motor mounts(Brushless) Main spur gear

1601-041

1601-042

1601-043

Bulkhead tie bars

Main driveshaft ø5.5×149mm

Taillight group 21

Charger

UA37

1805-014

Transmitter 1601-045

Rear sopiler assembly 1601-046

1601-047

Cross screwdriver 1601-048

Hexagon nut wrench 2-4mm
1601-049

Hex wrench 1601-050

1601-051

Ø2.5×11.8mm PM Shoulder screws ×8
1601-052

Ø2.5×5mm PM Screws ×8
1601-053

Ø2×13mm PM Screw pin set ×8
1601-054

Ø2.5×16.5mm PM Screw pin set ×8
1601-055

390 Motor mounts

Ø2.5×8.5mm KM Screws ×8

Ø2.5×11.5mm KM Screws ×8

1601-056

1601-057

Ø2.3×8mm PB Screws ×8
1601-060

Ø2×10mm PB Screws ×8
1601-061

Ø2.3×14mm PB Screws ×8

Ø2.5×15mm PB Screws ×8

Ø2.3×8×Ø8mm PB Screws ×8
22

Ø2.3×5×Ø7mm PB Screws ×8

1601-062

1601-063

1601-064

1601-065

Ø2.3×6mm PB Screws ×8
1601-066

Ø4×6.6mm PM Shoulder screws ×8

Ø2×8mm PB Screws ×8

Brushless motor mounts
Ø3×8mm KM Screws ×8

Ø2.6×8mm PB Screws ×8
1601-004

1601-017

1601-021

Hex flanged nylon insert lock nut ×4 M3
1601-019

Ø8×Ø4×3mm Ball bearing ×4
1601-024

Ø12×Ø8×3.5mm Ball bearing ×4
1601-022

1601-026

Ø2.5×10mm Pivot balls ×4
1601-033

Ø2.5×12mm Pivot balls ×4

Ø1.8×6.8mm Pin ×4

Ø2.5×32mm Pin ×4

Ø2.5×21mm Pin ×4
CAUTION: The above pictures and contents are for reference only and are subject to change without notice. Please subject to the parts actually sold.
23

FCC Note
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interferencein a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
Reorient or relocate the receiving a ntenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which thereceiver is connected.
WARNING: Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
FCC Notice
The equipment may generate or use radio frequency energy. Changes or modifications to this equipment may cause harmful interference unless the modifications are expressly approved in the instruction manual. Modifications not authorized by the manufacturer may void user’s authorityto operate this device.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference. (2) This device must accept any interference received, including interference that may cause undesired operation.
FCC Radiation Exposure Statement
The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition with out restriction.

Demo video

Operation guide download

Manufacturer: UDIRC TECHNOLOGY CO., LTD
Address: Guangfeng Industrial Zone, Guangyi Street, Chenghai District, Shantou City, Guangdong Province, CN
MADE IN CHINA 24

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