GF45 civilian unmanned‑aircraft gasoline engine

GF45 45cc 4‑Stroke Gasoline UAV Engine

Core Product Advantages

The GF45 is a lightweight four‑stroke gasoline powerplant, hobby‑grade fixed‑wing drone engine and reliable civil‑use UAV motor built‑for medium‑size RC aircraft, aerial‑photography unmanned planes and inspection‑grade civilian drones. Its core strengths are listed as below:

Mature Four‑Stroke Structure Design
The 4‑stroke mechanism delivers smoother operation, lower vibration and quieter running than conventional two‑stroke engines, bringing stable flight experience for long‑time aerial missions.
Steady Power Output
With 45‑cc displacement, this gasoline engine reaches the peak power of 3.7 HP at 8000 rpm, providing dependable thrust reserve for medium‑size fixed‑wing aircraft during take‑off, climbing and high‑speed cruising.
Broad Stable‑Speed Band
The usable operating‑speed range is 1600‑8000 rpm. The wide‑range rotational‑speed setting adapts to low‑speed hovering, medium‑speed patrol and fast‑speed flight of multiple civilian unmanned‑aircraft tasks.
Light‑Weight Body and Great Power‑to‑Weight Ratio
The main‑body engine weight is only 1246 g, paired with a 100‑gram separate ignition unit. The lightweight layout helps the aircraft reserve extra payload space for cameras and sensing equipment.
Two‑Kind‑Propeller Adaptability
Two mainstream two‑blade propeller specifications are supported: 19×10 and 21×8. Operators can swap propellers to adjust thrust, airspeed and flight endurance for different‑purpose missions.
Stable Ignition System and Easy‑Maintain Fuel Scheme
The independent ignition system works reliably under DC 6V‑14.4V 1000mAh power supply. It maintains steady spark ignition in complex outdoor environments. It adopts a 35:1 mixing ratio of 92‑octane gasoline and full‑synthetic two‑stroke lubricant for convenient daily maintenance.

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Product Overview

1. Product Positioning for Medium‑Sized Civilian Fixed‑Wing Unmanned Aircraft

GF45 is an air‑cooled four‑stroke piston‑type UAV gasoline engine. It differs from our existing two‑stroke GT‑series engines and focuses on users pursuing low‑vibration, quiet and smooth‑running power. It is well‑suited for medium‑sized RC fixed‑wing airplanes, hobby‑grade drones, aerial‑photography aircraft and lightweight short‑range inspection‑use unmanned aerial vehicles.

Its four‑stroke structure cuts running vibration greatly, which helps airborne shooting equipment capture clearer images.

2. Flexible‑Range Rotational Speed and Trustworthy Thrust Performance

The usable rotational‑speed scope spans 1600 rpm‑8000 rpm. The wide‑band stable‑speed output covers most common flight conditions for civilian aircraft. When reaching the peak speed of 8000 rpm, the four‑stroke gasoline engine delivers its maximum 3.7‑horsepower output for excellent climbing and accelerating capacity.

Two types of two‑blade propellers are optional, allowing users to configure the aircraft for long‑time low‑speed patrol or fast‑speed cross‑country flight.

3. Reliable Ignition Assembly and Fuel‑Oil Matching Standard

The detachable ignition component weighs only 100 g and accepts wide‑range DC power input of 6 V‑14.4 V. The matched 1000‑mAh power source supplies consistent sparks during the whole‑flight process.

Regular 92# unleaded gasoline must be blended with full‑synthetic two‑stroke dedicated lubricating oil at the proportion of 35:1. The mixed‑fuel lessens internal‑component abrasion and extends the engine service life under long‑time high‑speed‑running conditions. 发动机 (12).webp

Technical Parameter Item	Verified Standard Parameter Value
Product Model	GF45
Total Displacement	45 cc
Usable RPM Operating Range	1600‑8000 rpm
Maximum Output Power	3.7 HP @8000 rpm
Main Engine Net Weight	1246 g
Ignition Module Weight	100 g
Ignition Working Power Supply	DC 6V‑14.4V, 1000mAh power source
Suitable Propeller Spec (Two‑Blade)	19×10, 21×8
Required Fuel Type	92# unleaded gasoline + full‑synthetic 2‑stroke lubricant
Gasoline‑to‑Lubricant Mix Ratio	35:1
Engine Type	Air‑Cooled 4‑Stroke Piston UAV Gasoline Engine
Suitable Civil‑Use Scenarios	Medium‑size fixed‑wing RC aircraft, hobby‑grade drone, aerial‑photography unmanned plane, lightweight short‑range industrial‑inspection UAV

Frequently Asked Questions (FAQ)

Q1: What civilian unmanned aircraft is the GF45 four‑stroke UAV gasoline engine suitable for?

A1: This four‑stroke drone gasoline engine works well for medium‑sized fixed‑wing RC aircraft, hobby‑grade multi‑rotor drones and short‑range aerial‑photography unmanned planes. Its low‑vibration running characteristic is ideal for aerial‑photography missions.

Q2: What fuel‑oil mixing ratio do I need, and how can I improve flight performance?

A2: You need to blend 92‑octane unleaded gasoline and full‑synthetic two‑stroke lubricating oil strictly at 35:1. You can change between 19×10 and 21×8 two‑blade propellers to adjust flight thrust and speed. Detailed fuel‑mixing steps and propeller‑matching guidance are provided inside the official user manual.