RC ERA C187 EC135 Scaled 4CH RC Helicopter User Manual

Introduction and Safety Guidelines

Important Note

Please read this manual thoroughly to understand the functions of this product before operation. Damage to the product and potential personal injury may occur if operational errors are made.

This is an RC helicopter, not a toy. It requires prudent operation and a basic understanding of its functions. All children using this product should be under adult supervision. This manual includes safety, operation, and maintenance instructions. To avoid causing damage or serious injury, please adhere to all instructions and warnings before using this product.

Additional Safety Precautions and Warnings

Recommended age of users: Not suitable for children under 14 years old.
Operate the helicopter in an open space, away from traffic and people.
Always obey the instructions and warnings, including those for optional equipment.
Keep the helicopter away from chemicals. Small parts and electrical equipment must be out of the reach of children.
Keep away from water as this product has no waterproof function.
Do not put any parts in the mouth; this could cause injury or death.
Do not operate the model if the transmitter's battery is low.
Do not view the beam of the light-emitting diodes directly, as it may affect eyesight.
The motor and electric equipment will heat up after flight. Avoid touching them to prevent burns.
To avoid damage, do not touch high-speed rotating parts.

Package Contents

Verify that all items listed below are included in your package:

Helicopter (1)
Remote Control (1)
Lipo battery (1)
USB charger (1)
Phillips screwdriver + hex wrench (1 set)
Upper connecting rod / Propeller / tail rotor (spare parts)
Instruction manual (1)

Specifications

Parameter	Value
Length	260 mm
Height	80 mm
Weight	100g
Propeller length	256 mm
Battery Specification	7.4V 350mAh
Flight Time	About 13-15 min.
Main Motor	1020
Tail Motor	0720
Charge Time	About 45 min.

Dimensions diagram of the RC ERA C187 helicopter — Detailed dimensions of the C187 helicopter, showing rotor diameter 256mm, fuselage length 257mm, and height 81mm.

Setup

Remote Controller Battery Installation

The remote controller requires 4 AA-sized batteries (not included).

Diagram showing how to install batteries in the remote controller — Illustration of opening the battery compartment and inserting AA batteries according to polarity markings.

Slide the battery lid open by following the arrow indicated on the controller.
Insert 4 AA-sized batteries, ensuring correct polarity as indicated in the compartment.
Do not mix batteries of different chemistry or specifications.
Close the battery lid securely.

Battery Charging Method

Using the original factory USB charger ensures charging safety. It is recommended to use the provided charger, as other chargers may cause battery damage and property damage.

Diagram showing USB charging of the helicopter battery — Diagram illustrating the USB charging process. The LED is ON during charging and OFF when complete.

Charging Indicator: LED ON when charging, LED OFF when charging is finished.

Method 1: Charging via USB port on a computer

Connect the USB charger to a computer's USB port.
Connect the battery to the USB charger.

Method 2: Charging via power supply adapter

Connect the USB charger to a power supply adapter (not included).
Connect the battery to the USB charger.

Method 3: Charging via power bank

Connect the USB charger to a power bank (not included).
Connect the battery to the USB charger.

Battery Warnings

The battery may fire, explode, or leak if the following instructions are not strictly observed:

Do not immerse the battery in water or seawater. Store the battery in a cool, dry environment during standby periods.
Keep all batteries out of the reach of small children. Consult a doctor immediately if a battery is swallowed.
Do not use or leave the battery near a heat source such as fire or a heater.
Use only the battery charger specifically designed for this purpose when recharging.
Do not reverse the positive (+) and negative (-) terminals.
Do not connect the battery to an electrical outlet.
Do not dispose of the battery in fire or heat.
Do not short-circuit the battery by directly connecting the positive (+) and negative (-) terminals with metal objects such as wire.
Do not transport or store the battery together with metal objects such as necklaces, hairpins, etc.
Do not strike or throw the battery against a hard surface.
Do not directly solder the battery.
Do not unpack the battery with a nail or other sharp object.
Never disassemble the battery in any way.

Note: The battery should not be left at full power or low power for extended periods. Otherwise, it may not charge or may swell. For long-term storage, charge the battery to 7.8V and store it in a dry and safe place.

Operation

Transmitter Function Overview

Diagram of the remote controller with labeled buttons and sticks — The remote controller features a Power Indicator, Power Switch, Speed control, Fine-tuning buttons, and control sticks for Up/Down/Left/Right Rotation and Forward/Backward/Left/Right Side Fly. The One Key Take Off/Landing button also allows switching between Mode 1 and Mode 2 when pressed while turning on the TX power.

Helicopter Parts Diagram

Diagram of the RC ERA C187 helicopter with labeled parts — Key components of the helicopter include the Rotor head, Cross plate, Center Shaft, Propeller, Roto Clip, Battery Box, Landing gear, LED lights, and Tail Rotor.

Direction of Operation

If you are unfamiliar with the control of the C187, take time to familiarize yourself with the controls before your first flight.

Diagrams illustrating helicopter flight controls — Visual representation of control stick movements for Throttle (Climb/Decend), Rudder (Nose Yaws Left/Right), Elevator (Forward/Backward), and Aileron (Left/Right).

Flight Operation Steps

Turn on the transmitter and place the helicopter near the transmitter.
Install the aircraft battery safely and securely in the battery compartment. Press the power switch for 2 seconds to turn on the aircraft power.
The lights of the helicopter and the remote control will flash simultaneously. Quickly push the throttle stick from top to bottom. The remote control will emit a 'DI' sound, and the indicator lights of both the helicopter and remote control will become solid, indicating successful binding.
Pull both joysticks to their outer eight-angle positions to start the helicopter. (Alternatively, you can press the one-key takeoff button to launch the helicopter directly.)
Keep the helicopter head forward and maintain a safe distance from the helicopter.
When manually landing the aircraft, keep the throttle stick at the bottom for 2-3 seconds, then release it after the propeller has completely stopped rotating. (This step is not required when using the one-key landing function.)

Note:

To avoid hitting, do not look at the helicopter at hip level when it flies.
To avoid distractions, ensure no other transmitters are operating nearby.

Flight Yaw Correction Method

Press the trimming button if the helicopter experiences yaw problems. If you are dissatisfied with hovering performance or if the helicopter yaws, follow these steps to adjust:

Diagrams showing yaw correction adjustments on the remote controller — Illustrations of fine-tuning adjustments for forward/backward yaw, left/right yaw, and side fly yaw, indicating which trim buttons to press based on the helicopter's drift.

Take off with the throttle joystick. According to the direction of yaw, press the fine-tuning button in the opposite direction until the plane hovers stably.

Note: Beginners should pay attention to the direction of flight. Keep the head forward to avoid causing injury.

Maintenance

Trimming Notes

Diagram showing a person trimming the helicopter, emphasizing altitude — Illustration of trimming the helicopter, with a warning to maintain a flying altitude above one meter for safety.

Gyro Calibration Method

If the helicopter yaws during flight, first land it and calibrate the gyroscope.
When calibrating the gyroscope, the aircraft must be placed on a level ground.
The indicator light will flash quickly during the calibration process. The indicator light stops flashing when calibration is complete, allowing for takeoff.

Commonly Used Parts Replacement Instructions

Propeller Replacement

Diagram showing propeller removal with a hex wrench — Illustration of using a hex wrench to remove the propeller. Ensure not to overtighten when installing a new propeller.

Remove the propeller with a hex wrench. Be careful not to overtighten when installing the new propeller.

Motor Removal

Diagram showing how to unplug and twist the motor for removal — Illustration of unplugging the motor and twisting it left and right to pull it out.

Unplug the motor, then twist it left and right to pull it out. First, pull out the screw, and then pull out the big gear directly downward. Pay attention to the direction when installing the new gear. The plane of the shaft should be aligned with the plane of the inner hole of the gear.

Tail Rotor Replacement

When removing and replacing the tail rotor, pay attention to the direction. Align the motor shaft and press it slowly to ensure smooth rotation.

Troubleshooting

Problem	Possible Cause	Solution
Chopper powers on, taillight blinks, no response to operation.	Helicopter not bound with the transmitter.	Bind the transmitter again.
After turning on the chopper power switch, nothing happens.	Poor power supply to helicopter or transmitter; Low battery voltage; Poor battery connection.	Check transmitter batteries; Use full voltage batteries; Reinstall batteries; Confirm good connection.
Push throttle but motor not working, receiver's signal light keeps flashing.	Helicopter's battery has low voltage; Lipo battery has poor connection.	Charge or replace with a fully charged battery; Connect the battery with receiver again.
Turn on helicopter after binding, main blade rotates but helicopter cannot take off.	Chopper battery low.	Charge or replace with a fully charged battery. Reinstall and smoothly turn the propeller.
Helicopter is violently shaking.	Main rotor deformed; Cross shaft bent; Tail rotor bent; Blade clamp screws too tight.	Change main blade; Change cross shaft; Change tail rotor; Loosen blade clamp screw.
Helicopter spinning to left after takeoff.	Tail motor has poor power; Blades loose; Tail motor broken.	Check tail blade and motor shaft connection. If loose, change tail blade or tail motor.
Helicopter has a little yaw.	Operational error of the trimming button.	1. According to yaw direction, push trimming button in opposite direction; 2. Reset hovering point.
Helicopter has a serious yaw.		Check servo for proper function; Check swash plate; Check rod sticks for looseness.

User Tips

Flight Environment: For beginners, it is highly recommended to use the helicopter in a large, open outdoor area for training to prevent accidental collisions. While capable of indoor flight, its speed can make it challenging in confined spaces.
Stability and Battery: The C187 is noted for its stable flight characteristics and good battery life, offering a satisfying flying experience both indoors and outdoors.
Transmitter Mode: The remote controller supports switching between Mode 1 and Mode 2. This can be done by pressing the 'One key take off/landing' button while turning on the transmitter power.
Spare Batteries: Consider purchasing additional batteries to extend your flight time and enjoyment, as the package typically includes one.

Compliance

Disclaimer

⚠️ For recreation use only. Illegal modification of drones/planes is prohibited. Please also pay attention to the relevant laws and regulations on the use of drones/planes in your country/area to ensure legal use.

Warranty and Support

For any issues not covered in this manual, or for specific warranty information, please contact the manufacturer or your seller directly. Keep your purchase receipt as proof of purchase.

A detailed user manual in PDF format is available for further reference. You can typically find this document on the product's support page or by contacting customer service.

RC ERA C187