2.3*0.8*1.6m (Without blades)


3.6m (One pair , two propellers)

Empty weight


Max Takeoff  Weight





Aluminum alloy for aeronautic

Flying Speed


Engine Power

34 hp*2

Propulsion System

Water cooled rotary engine*2


40L 92# Gasoline

Hovering time


Max flying altitude

3Km(sea level)

Spraying Area in one flight

6.7hectares /flight

Flying prepare time


Radius of flight control


flight Mode

Autonomous flight

RTK Technology(optional)

Plane accuracy:±8mm+1ppm

Height accuracy:±15mm+1ppm

Anti-wind ability

Force 5 wind

Rain resistance

Light rain

Working temperature


Storage temperature


Are there any trouble/crash accidents in the past of SY261H?
No any trouble/crash accidents in the past of SY261H till now.

How about the efficiency of the SY261?
The spray efficiency of the SY261H is about 6.7 hectare(16.6 acres)/flight.

What’s the control range of SY261H?
The distance cover range can reach 50km.

Why does the SY261H use the coaxial double-rotor layout?
l Multi-functions:  designed for multi-mission, it can take multi-roles and supports for a variety of missions, including disaster prevention, aerial measurement, spraying chemicals, routing inspection, observation, photo-graphy and business transport missions.
l High reliability in harsh environment : SY261H with advanced control module and software, good adaptability to harsh environment .
l Strong Power with small size : two water cooled  rotary engines design, total power of SY261 is more than 65 Pferdestarke, actual takeoff weight is up to 260 kg.payload is 70Kg . The coaxial dual rotor design can maintain high weight and aerodynamic efficiency, with the characteristics of small size and compact structure.
l The hovering efficiency of coaxial helicopter is 17% to 30% higher than single rotor helicopter.

What are the advantages of the SY261H with two sets rotary engines?
The rotary engine for helicopter has the characteristics of high power to power ratio, high reliability, low noise and low power consumption, small vibration, smooth operation and easy maintenance. It is equipped with special clutch and output interface to match the demand of the helicopter.

Do you offer customization?
Sure. Customization of drone aircraft can be achieved easily and it is our biggest strength. You can raise your requirement for the customizing, then it will be processed by our professional managers. We offer a set of products and variations corresponding to various payload ranges.

In comparison with others drones, what are the benefits of  SY261H?
The SY450H adopts coaxial double-rotor layout and rotary engine solve the problem of high power loss of high altitude. Flight height can reach 3000 meters and payload can reach up to 70kg. It can work in a complex environment with high stability. The most important thing is that we can take many different payloads.SY261H can be used for high precision and large load telemetry aerial platform, radar reconnaissance, large scale communication relay, emergency supplies transportation and so on.

Which loading modules can be carried by the SY261H?
The SY261H can payload aerial video transmission module (picture transmission), aerial rescue module, aerial multi-purpose throwing module, communication relay module ,powerline inspection module and so on.

Is RTK standard?
The RTK technology of the SY261H is optional. The hovering accuracy of the SY261H without RTK technology is about ±1m. Using RTK technology, the plane accuracy range is ±8mm+1ppm and height accuracy is ±15mm+1ppm.

Does the drone contain lightning protection modules?
The fuselage of the drones is made of carbon fiber. The fuselage itself is a conductor, which can export thunder and protect the internal parts of the fuselage. In addition, drones generally don’t fly in lightning weather.

The problem about drone’s price .
The price of drones varies mainly depending on the product and the loading conditions involved. For details, please consult our sales manager via Skype.

Do you provide warranty for your drones?
The warranty is included in the price of our products and it is valid for one year. Of course, there is a possibility of extending the warranty period, it’s depending on the volume of the order.

Do you provide after-sale service? What cover warranty?
Besides 24 hours contact availability, Sunwin is also responsible for replacing any parts caused by drone itself. However, Sunwin will not take the responsibility if the malfunction is caused by the operators. One-year warranty solely includes spare parts supply.

Do you provide instructions on how to operate a UAV?
Sunwin provides the UAV flight training, but the training will be exclusively offered in Beijing and Hefei, Anhui China. We have a professional UAV training institution authorized by CAAC, authenticated by AOPA. Teaching our customers how to use our UAV and professional engineers will give you the best technical support. It is completely free of charge (meals and accommodation are not covered) and takes one week to complete.

How could I become an official Sunwin distributor?
Sunwin welcomes potential distributors to pay a visit to its factory for the demonstration of our competence, sharing ideas and discussing face to face partnership. Contact us to arrange a meeting.

What do I have to bear in mind before my first flight?
l Make sure you are in an open and safe environment.
l Make sure the drone is placed on a flat surface.
l Keep in mind that surrounding electromagnetic signals might affect the performance of the drone.
l Compass Calibration is always highly suggested before each flight.
l Never start in normal mode and then switch to GPS mode when the drone is off the ground. The drone will only set the home location when taking off in GPS mode. This is the main cause of pilot error fly always as the drone will attempt to fly back to its previously set home point.

Is it possible to provide rental services and pilot services?
Yes, you don’t need to master the flight technology. We can provide drones and pilots according to your application needs. Please contact our sales manager.


Model of UAV  File Size  Click to Download
SY261H  Unmanned Helicopter    1.20MB 
SY261H Download- Specification.rar