Product Overview
The GF60i2-E is a professional inline twin-cylinder four-stroke aviation gasoline engine independently developed for civil fixed-wing drones and high-fidelity RC aircraft, produced by Shandong Zhongtian Power Technology Co., Ltd.
As a mature light-duty UAV gasoline engine, it breaks the performance limitation of small-displacement twin-cylinder power units. Its overall installation dimensions match mainstream 300–350cc inline methanol four-stroke engines, allowing seamless replacement without redesigning drone frames. With 59.82cc total displacement and maximum 5.1HP output, it provides stable 10kg tensile thrust, perfectly matching commercial UAV platforms with 12–16kg takeoff weight.
Every component undergoes precision machining and strict performance testing. The unique separated lubrication circulation system, dual piston ring structure and 90° dual-cam crankshaft design jointly suppress vibration and boost combustion efficiency. Standard accessories including universal exhaust silencer and CM6 spark plug ensure smooth exhaust, quiet operation and consistent ignition performance in high-altitude, low-temperature environments.
Core Technical Design Highlights
1. Optimized Vibration Reduction Structure & High Precision Cylinder Assembly
The engine uses a proprietary 90° crankshaft dual cam mechanism to offset reciprocating vibration, realizing ultra-stable running state during cruise flight. The cylinder liner is cast from wear-resistant ductile iron, with inner hole roundness tolerance controlled within 0.01mm — much higher than the 0.03mm tolerance of conventional chrome-plated aluminum cylinder liners. Ductile iron material avoids heavy metal pollution from electroplating processes and fully complies with EU environmental emission rules, supporting global export business. Dual piston rings (one oil control ring + one compression ring) enhance air tightness and uniform lubrication to reduce oil consumption.
2. Advanced Independent Lubrication & Forged Connecting Rod Assembly
Precision forged connecting rods are fitted with needle roller bearings for full lubrication of crank pins. The separated independent lubrication circulation system distributes lubricating oil evenly to all moving friction pairs, eliminating local dry wear during long-hour continuous flight. Compared with mixed-lubrication engines of the same grade, it reduces component wear rate and extends overhaul cycle significantly.
3. Easy-Debug Rear Walbro Carburetor & Automatic Ignition System
A rear-mounted WALBORO carburetor is matched for this drone gasoline engine, with accessible adjustment knobs that simplify air-fuel ratio calibration for different altitudes and loads. Supporting it is an exclusive RCEXL automatic angle induction ignition system, paired with CM6 spark plugs to deliver stable ignition energy across the full RPM range of 1200–7500rpm. Ignition power supports DC 6V–14.4V wide voltage input, compatible with mainstream drone lithium battery power supply systems.
4. Integrated Brushless Electric Starter for Convenient Field Operation
Unlike pull-start only small aviation engines, the GF60i2-E integrates a complete brushless electric starting module. The starter runs on 12V power or 3S lithium battery, matched with a 40A brushless ESC. The whole starter assembly only weighs 360g without excessive weight gain to the airframe. Operators can realize automatic startup without auxiliary tools, greatly improving efficiency for outdoor aerial survey, cargo delivery and agricultural spraying missions.
Complete Technical Parameter Table
| Technical Parameter | Verified Standard Value |
|---|---|
| Product Model | GF60i2-E |
| Engine Type | Inline Twin-Cylinder 4-Stroke Gasoline UAV Engine |
| Total Displacement | 59.82cc (29.91cc × 2 cylinders) |
| Bore × Stroke | 36mm × 29.4mm |
| Working RPM Range | 1200rpm – 7500rpm |
| Max Output Power | 5.1HP @ 8000rpm |
| Static Tensile Thrust | 10kg |
| Compression Ratio | 8.5:1 |
| Fuel Formula | 92# Unleaded Gasoline + Fully Synthetic 2T Lubricant |
| Fuel-Oil Mix Ratio | 35:1 |
| Main Engine Dry Weight | 2800g |
| Exhaust Silencer Weight | 81g |
| Ignition Module Weight | 160g |
| Electric Starter Weight | 360g |
| Ignition Operating Voltage | DC 6V – 14.4V (1000mAh) |
| Spark Plug Model | CM-6m |
| Matched Brushless ESC | 40A |
| Starter Input Voltage | 12V DC / 3S Lithium Battery |
| Recommended Propeller | 22×8–10, 23×8–10 (Two-blade) |
Suitable Application Scenarios
- Long-endurance fixed-wing industrial surveying & mapping UAVs
- Light cargo delivery drones with 12–16kg takeoff weight
- High-fidelity scale RC aircraft & aviation demonstration models
- Agricultural low-altitude plant protection spraying drones
- Environmental monitoring, water quality inspection civil UAV platforms
Packing & Global Shipping
We offer multiple international logistics channels for worldwide delivery: EMS, FedEx Express, DHL, UPS, TNT.
Each engine set is packed with shock-absorbing foam and hard carton to protect precision parts during long-distance sea/air transportation. The full package includes main engine, exhaust silencer, electric starter assembly, ignition module, spark plug and installation drawing. Contact our sales team for customized packaging and bulk order freight quotation.
Frequently Asked Questions (FAQ)
Q1: Is this UAV gasoline engine directly replaceable with 300–350cc methanol inline four-stroke engines?
A: Yes. The GF60i2-E shares identical mounting hole dimensions with mainstream 300–350cc grade methanol four-stroke engines. No airframe structural modification is required for replacement. As a gasoline-powered UAV engine, it avoids the high cost and storage trouble of methanol fuel while outputting equivalent power performance.
Q2: What maintenance requirements does this drone gasoline engine have for long-duration flight?
A: This drone gasoline engine adopts a separated lubrication system and wear-resistant ductile iron cylinder liner to lower maintenance frequency. Only fully synthetic two-stroke lubricant mixed at 35:1 with 92# gasoline is required. Regular inspection of spark plug and carburetor filter every 20 hours of flight is enough; no frequent disassembly maintenance is needed for commercial continuous operation.
