ZT-T550 Four Cylinder Horizontally Opposed UAV Engine
• 49.62hp (37kW) four-cylinder, horizontally opposed, air-cooled, two-stroke engine with 550cc displacement and 66mm×40mm bore and stroke
• Delivers 70kg static thrust at 100m altitude and 61.8kg at 1800m altitude — supports UAVs up to 220kg MTOW
• Solid-state magneto ignition with CDI automatic angle ignition; opposed two-cylinder synchronous firing with auto-switching at 500rpm
• Forged seven-piece crankshaft; oval-ground aluminium alloy pistons; cast aluminium alloy cylinders with ceramic nickel-silicon hardened inner-wall coating
• Two diaphragm-type all-around carburetors (without choke/injector nozzles); mixture lubrication at 50:1; speed range 1300–7500rpm
• Available in carburetor (14L/h) or EFI (10L/h); recommended propellers 32×20, 30×23, 30×25; generator 800W or 2000W; starter optional
• Weighs 18.3kg with dimensions of 430×340×400mm; options include exhaust pipe, starter, generator
- Trusted dealerDirect manufacturer partnership
- Pan-India deliveryInsured shipping, all states
- Post-sale supportTraining + service included
What makes it work
ZT-T550 Four Cylinder Horizontally Opposed
Four Cylinders · Horizontally Opposed · Air-Cooled · Two-Stroke · Solid-State Magneto Ignition · Mixture Lubrication · Push and Pull Devices
Full Specifications
ZT-T550 Technical Specifications
| Specification | Details |
|---|---|
| Engine Configuration | |
| Cylinder Configuration | Four cylinders |
| Layout Form | Horizontally opposed, 4 cylinders |
| Cooling | Air-cooled |
| Engine Cycle | Two-stroke |
| Ignition System | Solid-state magneto ignition / CDI automatic angle ignition |
| Lubrication | Mixture lubrication — 50:1 ratio |
| Mounting | Push and pull devices |
| Performance | |
| Power | 49.62hp / 37kW |
| Static Thrust (100m altitude) | 70kg |
| Static Thrust (1800m altitude) | 61.8kg |
| Max Take-off Weight | 220kg |
| Speed Range | 1300–7500 rpm |
| Engine Dimensions | |
| Bore × Stroke | 66mm × 40mm |
| Displacement | 550cc |
| Crankshaft | Forging, seven-piece set |
| Piston | Oval grinding, aluminium alloy casting |
| Cylinder | Cast aluminium alloy, ceramic nickel-silicon hardened inner-wall coating |
| Firing & Fuel | |
| Firing Order | Opposed two-cylinder synchronous ignition, automatic switching at 500 rpm |
| Carburetor/EFI | Two diaphragm-type all-around carburetors, without choke/injector nozzles |
| Recommended Propeller | 32×20; 30×23; 30×25 |
| Fuel Consumption (Carburetor) | 14L/h |
| Fuel Consumption (EFI) | 10L/h |
| Electrical | |
| Generator | 800W / 2000W |
| Starter | Optional |
| Physical | |
| Weight | 18.3kg |
| Dimensions (L×W×H) | 430×340×400mm |
| Options | Exhaust pipe, Starter, Generator |
Product Overview
ZT-T550 Four Cylinder Horizontally Opposed
The ZT-T550 is a four-cylinder, horizontally opposed, air-cooled, two-stroke UAV engine producing 49.62hp (37kW) with 550cc displacement. It delivers 70kg static thrust at 100m and 61.8kg at 1800m, supporting UAVs with a maximum take-off weight of 220kg. Key features include a forged seven-piece crankshaft, oval-ground aluminium alloy pistons, cast aluminium alloy cylinders with ceramic nickel-silicon hardened inner-wall coating, two diaphragm-type all-around carburetors, and CDI automatic angle ignition with solid-state magneto.
Product Details
ZT-T550 — Features & Engineering
Horizontally Opposed Four-Cylinder with Forged Crankshaft
The ZT-T550 uses a horizontally opposed, four-cylinder layout with a bore of 66mm and stroke of 40mm, giving 550cc displacement. The engine operates across 1300–7500 rpm and delivers 49.62hp (37kW).
The crankshaft is a forged seven-piece assembly for maximum strength. Pistons are oval-ground aluminium alloy castings. Cylinders are cast aluminium alloy with a ceramic nickel-silicon hardened inner-wall coating for extended wear resistance. Lubrication ratio: 50:1.
Solid-State Magneto with CDI Automatic Angle Ignition
The ZT-T550 uses solid-state magneto ignition with CDI automatic angle adjustment. The firing order uses opposed two-cylinder synchronous ignition with automatic switching at 500 rpm.
Two diaphragm-type all-around carburetors (without choke or injector nozzles) provide fuel delivery at 14L/h. EFI version: 10L/h. Generator: 800W or 2000W. Options: exhaust pipe, starter, generator. Recommended propellers: 32×20, 30×23, 30×25.
Dual Carburetor Configuration
The ZT-T550 features a matched pair of carburetors — one per cylinder bank — delivering consistent fuel delivery across all four cylinders. This symmetrical layout supports the horizontally opposed architecture and ensures balanced power output at all RPMs.
Recommended propellers: D700×H750 and 28×20. Fuel consumption at full power: approximately 18L/h.
At a Glance
ZT-T550 — Key Specifications
Frequently Asked Questions
ZT-T550 — Common Questions
What is the cylinder layout of the ZT-T550?
What makes the ZT-T550 cylinder special?
What is the crankshaft specification?
What is the firing order of the ZT-T550?
What optional accessories are available for the ZT-T550?
The full sheet
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