Eachine E120S User Manual

Introduction

This is a super classic helicopter with excellent flight performance. The flybarless design decreases the resistance of the rotor head. Due to its aerodynamics, the blades can supply strong power and maintain stability. Using the latest technology of a new gyro type, this helicopter is compatible with 3D and 6G modes. You can perform a variety of stunts in 3D mode. 6G mode is especially suitable for beginners.

Once you have flown this mini helicopter, you will find other similar mini helicopters are much inferior. This is an incomparable and popular helicopter. Once it has been set up correctly, beginners will find it is very easy to fly. They can master or quickly learn new moves. The built-in ‘rescue’ or upright function in 6G mode (if set up properly) can save the helicopter in most cases.

The detailed instructions in this manual will help you understand more about the product. Please read it before operating your helicopter. It may help you to save both time and money due to incorrect settings, etc.

Item List

Notice

All instructions, warranties and other collateral documents are subject to change at the sole discretion of the company. For up-to-date product literature, please visit www.eachine.com.

Warning

Read the ENTIRE user manual to become familiar with the features of the product before operating. Failure to operate the product correctly can result in damage to the product, personal property, and cause serious injury. This is a sophisticated hobby product. It must be operated with caution and common sense and requires some basic mechanical ability. Failure to operate this product in a safe and responsible manner could result in injury or damage to the product or other properties. This product is not intended for use by children without direct adult supervision. This manual contains instructions for safety, operation, and maintenance. It is essential to read and follow all the instructions and warnings in the manual, prior to assembly, setup, or use, in order to operate correctly and avoid damage or serious injury.

Additional Safety Precautions and Warnings

1. Age Recommendation: Not for children under 14 years. This is not a toy.
2. Always operate your model in open spaces away from full-size vehicles, traffic, and people.
3. Follow the operation notice, warning, and any support equipment (charger, battery, etc.) carefully.
4. Keep away from any chemicals; keep children away from any small parts and electrical equipment.
5. Always keep away from water, especially for this product, as it does not have a water-proof function; it will be damaged by moisture.
6. Never place any portion of the model in your mouth as it could cause serious injury or even death.
7. Never operate your model with low voltage transmitter batteries.

Helicopter Parameters

Warning and the Guide of Battery Usage

CAUTION ⚠️ WARNING ⚡️ WARNING ? WARNING ⚠️ WARNING ⚡️ WARNING ⚠️ WARNING ❄️

• Always use a charger compatible with batteries.
• Always charge Batteries away from flammable materials.
• Never leave charging Batteries unattended.
• Never charge damaged Batteries.
• Never Alter Batteries.
• Never touch or use hot Batteries.

To ensure safety, please use the included supplied standard charger.

WARNING: It is highly recommended to use the supplied charger to charge the battery.

Notice: When the battery voltage is lower than 7.4V, the lithium battery may be damaged, and may be no longer correctly charged. When the battery voltage is lower than 7.4V during a flight, the main ESC drops the head speed significantly. Please land immediately and charge the battery as soon as possible.

Battery Charging

1. To charge the battery, please connect the charger USB plug into a USB plug pack or to a USB port of a computer or a plug pack. If no battery is connected, the USB charger red light will flash.

2. Once the battery is plugged into the USB charger, the charger's red light is lit to indicate the charging is in progress.

3. When the battery is fully charged, the USB red light will stay off.

(Image description: A 7.4V 500mAh battery connected to a USB charging cable.)

Warning

1. For maximum safety, please monitor the battery while charging.
2. Please do not allow children to carry out the charging by themselves but ensure adult supervision at all times.
3. Please use the original standard charger of this product for charging. The use of unknown chargers may pose risks of fire and explosion.
4. If available, it is recommended that users use their own Lipo 3s @2A charger in lieu of using the USB charger. This helps to charge the battery at a much faster rate.

Notice Before Flight

1. Ensure the batteries for both the transmitter (TX) and helicopter are fully charged.
2. Before turning on the TX, please make sure the throttle control is at the lowest position and the TH.HOLD and 3D mode switches are in the back position (back cover direction).
3. Make sure the TX has paired with the helicopter. If not, please carry out the pairing process.
4. Please turn on the TX first, then connect the battery to the helicopter and wait until it is paired with the TX. When turning off, please unplug the power from the helicopter first, and then turn off the TX.
5. Keep away from people, cars, high-tension power lines, and water sources such as ponds, lakes, rivers, etc.

Bind With Transmitter

If you have the RTF package, the helicopter is already paired by the factory. However, if you need to pair again, please follow the following steps:

1. First, turn on the transmitter and make sure the throttle stick is at the bottom position, and the 3D IDLE switch is in the OFF position.
2. Remove the canopy for activating the binding switch.
3. Apply power to the helicopter; the red LED flashes slowly. Press the code button for 1 second, then the red lamp will go out and get ready for pairing.
4. When the red and blue lights turn on solid, the pairing has been successful.
5. While carrying out the pairing, ensure there are no other transmitters operating nearby to avoid unintended pairing.

Tips: This product is compatible with all FUTABA 2.4GHZ S-FHSS transmitters.

Notice

1. When the transmitter is turned on and the throttle hold switch is in the ON position, the transmitter will beep as a warning. The switch should be switched to the OFF position.
2. When the transmitter is turned on and the 3D switch is in the ON position, the transmitter will beep. The switch should be switched to the OFF position.
3. When the transmitter is turned on and the throttle stick is not in the lowest position, the transmitter will beep as a warning. The throttle stick should then be pulled down to the lowest position.

(Diagram description: Transmitter controls with numbered positions indicating throttle stick movement and switch functions.)

Throttle Curve and Pitch Curve

Throttle Curve

Pitch Curve

The above information is for your reference only; you can set the parameters to your demand.

Initial Flight

If you are not familiar with the controls of the E120S, please take a few minutes to get familiar with them and then try your first flight.

Throttle

(Diagram description: Shows helicopter ascending with throttle up and descending with throttle down.)

Rudder

(Diagram description: Shows left rotation with rudder left and right rotation with rudder right.)

Elevator

(Diagram description: Shows forward movement with elevator up and backward movement with elevator down.)

Aileron

(Diagram description: Shows left roll with aileron left and right roll with aileron right.)

Receiver Interface Diagram

(Diagram description: Shows the receiver board with connections labeled Servo #1, Servo #2, Servo #3, 5VS-BUS/PPM, and 3.3v DSM2/DSMX.)

Notes: 3.3V is suitable for DSM receiver and 5V is suitable for FUTABA (S-BUS) J receiver.

About the Transmitter

(Diagram description: Top view of the transmitter showing various controls and switches including 6CH/IDLE Switch, GS/GEAR, 5GH/Gyro Switch, TH.HOLD Switch, Antenna, Power Switch, Flying Rings, LED Display, Throttle Rudder Joystick, Throttle Fine-tuning, Rudder Fine-tuning, Menu, Exit, Servo Scale, Aileron/Elevator Joystick, Elevator Fine-tuning, Aileron Fine-tuning, Page Up, and Page Down.)

This transmitter supports CCPM 120-degree helicopter dedicated transmitter, with 3D/6G switching, high/low rudder capacity for two joystick modes, main cutout switch (TH.HOLD), and other modes, large screen LCD display, multi-function transmitter.

(Diagram description: Left and right hand throttle configurations showing forward, left/right steering, and backward movements.)

Flight Control Board Adjustment

1) Debugging pitch of thread

Explanation: The product has passed the inspection before leaving the factory. The user needs to re-adjust the pitch of thread after replacing the steering gear or related accessories.

To ensure safety, disconnect the main motor power cord during commissioning to avoid personal injury caused by motor rotation during commissioning.

The user comes with a special pitch of thread ruler for helicopters that can be adjusted more accurately. First, bind the aircraft to the code, and the transmitter in 6G self-stabilization mode.

Press the code matching key on the flight control board 4 times; the mainboard will flash red quickly and enter the debugging mode.

Use the transmitter to control the aileron rocker, lift rocker, and direction rocker for debugging until the swashplate is balanced and the blades are at 0 pitch of thread.

After the debugging is completed, press the motherboard link key to exit the debugging. The motherboard will resume the red light and the blue light will be on, then you can fly.

(Diagram description: Close-up of the flight control board with labels indicating where to press to enter debug mode and joystick controls for debugging: Aileron joystick debugging, Lifting rocker debugging, Directing joystick debugging.)

Troubleshooting

Exploded View

(Diagram description: An exploded view of the E120S helicopter, showing all components with corresponding numbers for identification.)

(Diagram description: Another exploded view focusing on the main body and landing gear of the E120S helicopter.)

Accessory List

Notice for beginners:

1. Please fly with an instructor until you are confident enough.
2. Before flying the model for the first time, you need to fully understand all of the functions provided by the transmitter and the responses of all of the switches.
3. Don't attempt to fly in 3D mode yet. Practice flying and hovering in 6G mode until you are familiar with it. Then you can practice flying and hovering flight under 3D mode. Once you are familiar with these two modes, you can try practicing inverted flight with an instructor.
4. Practice hovering flight of inverted moves to build a foundation for making more brilliant flying.
5. This model is not a toy and it can cause damage to people and property. If unsure, it is recommended that you practice with a simulator on a computer before doing real 3D fly with this model to minimize the damage.

Accessories List

(Image description: A grid layout displaying various parts of the E120S helicopter with their respective part numbers and names, including Main Rotor Head, Main Grip Blade Shaft Set, Main Blade Grip Set, Main Blade Set, Primary Linkage Rod Set, Swashplate, Secondary Linkage Set, Digital Metal Servo, Spindle Set, Brushless Main Motor 2406 1680KV, Main Frame, Swashplate seat, Flight controller box, Integrated Flight Control Board, ESC, 7.4V 500mAh 30C LiPo Battery, Canopy, Complete Tail Group Assembly, Landing Skid Assembly, Vertical Tail Fin Set, 8520 Tail Motor, Tail Rotor, Screw Set, USB, Radio control, and Servo Arm.)