Our Air-cool 280CC Engine conveys 21.5HP of strong execution with demonstrated air-cooling innovation. Supported by fourobot's 10 a long time of fabricating ability and certified to CE and ISO guidelines, this dual-cylinder powerplant combines a 66mm×41mm bore-stroke plan with a 10.5:1 compression proportion. With 100 units in stock and a 20-day generation cycle for custom orders, we offer quick sending for your ventures. The motor keeps up warm solidness through an effective fin-based cooling framework, disposing of the complexity of fluid radiators whereas conveying reliable yield over requesting applications.

You get a powerplant that's been refined through a decade of generation involvement. Our fabricating prepare takes after strict quality conventions, guaranteeing each unit meets universal compliance measures. The twin-cylinder setup gives smooth control conveyance whereas keeping support prerequisites minimal.
The air-cooling design disposes of common disappointment focuses. You won't bargain with coolant spills, radiator harm, or pump breakdowns. The coordinates blade plan maximizes surface region for warm scattering, keeping up ideal working temperatures indeed beneath ceaseless stack. This makes it idealize for situations where liquid-cooling frameworks would be illogical or vulnerable.
This Air-cool 280CC Engine excels over different industries:
Your hardware benefits from exact building. The 30:1 grease proportion guarantees ideal component security. With an sit out of gear speed of 1800 rpm and compatibility with 32×14 or 30×16 propellers, you can design the framework to coordinate your particular stack necessities. Most extreme fuel utilization remains at fair 7.5L/h, conveying cost-effective operation.
| Configuration Items | Parameters |
|---|---|
| Cooling Mode | Air Cooling |
| Cylinder | 2 |
| Performance | 21.5HP |
| Idle Speed | 1800 rpm/minute |
| Recommended Propeller | 32×14 / 30×16 |
| Spark Plug Type | BM6A |
| Diameter × Stroke | 66mm × 41mm |
| Compression Ratio | 10.5:1 |
| Lubrication Ratio | 30:1 |
| Maximum Fuel Consumption | 7.5L/h |
| Weight of Main Engine | 8.8kg |
| Weight of Exhaust | 140g |
| Weight of Ignition | 190g |
| Ignition Voltage | 6V–14.4V |
| Overall Dimensions (L×W×H) | 360×270×280mm (±10mm) |
At fair 8.8kg for the primary engine, you get fabulous power-to-weight proportion. Transportation and establishment gotten to be straightforward errands. The compact measurements fit tight mounting spaces without compromising auxiliary integrity.
The overhead valve setup gives clear get to for schedule benefit. You'll spend less time on support and more time running your hardware. Field repairs require essential devices and negligible specialized expertise.
Lower beginning venture compared to liquid-cooled options. Decreased support costs over the engine's lifetime. No coolant substitution costs or radiator repairs. The disentangled plan interprets straightforwardly to way better add up to fetched of ownership.
With 100 units prepared in stock, you won't confront long hold up times. For customized orders of 1–10 units, our 20-day generation cycle keeps your ventures on plan. We react to request inside 5×12 hours, guaranteeing speedy communication all through the process.
We bolster ODM and OEM prerequisites custom-made to your territorial determinations. Work adjustments adjust the Air-cool 280CC Engine to diverse fuel grades, outflow measures, or mounting setups based on your showcase needs.

Our fabricating office holds CE, ISO, TAF, and TELEC certifications. Each engine experiences warm cycle testing, running 500+ hours beneath changing loads to approve cooling proficiency. Compression leak-down tests confirm cylinder ring seating and valve integrity.

We conduct vibration examination to avoid crankcase weakness. For coastal or destructive situations, salt shower testing guarantees long-term strength. These methods adjust with ASTM and SAE J1349 guidelines, ensuring appraised drive all through the benefit life.
Your speculation incorporates a 1-year guarantee sponsored by worldwide neighborhood specialists. Quick reaction times cruel you get help when required. Different coordinations options—air, ocean, and land—ensure conveyance matches your timeline.

Q1: How does the engine maintain safe temperatures in stationary applications?
A:The flywheel-mounted centrifugal fan creates constant airflow directed through a specialized shroud. This design ensures effective cooling even at idle speeds, preventing thermal buildup during extended operation.
Q2: What oil specification works best for high-load cycles?
A:We recommend high-detergent SAE 10W-40 or 15W-50 synthetic oils. These viscosity grades resist shear under thermal stress, maintaining proper lubrication film strength during demanding work cycles.
Q3: How often should I inspect the cooling fins?
A:In dusty environments, check every 50 operating hours. Remove any debris blocking airflow channels. Clean fins ensure optimal heat transfer and prevent hot spots on cylinder surfaces.
Q4: Can this power unit run on alternative fuels?
A:Yes, with appropriate modifications. LPG conversion requires a regulated high-pressure mixer and hardened valve seats to handle the dry-heat characteristics of gaseous fuels.
Q5: What's the expected service interval for major overhaul?
A:With proper filtration and regular oil changes, you can typically expect 1,500–2,000 hours before requiring ring or valve guide replacement. This lifespan assumes operation within recommended load parameters.
Q6: Does the product meet current emission standards?
A:Our design complies with EPA/CARB Phase 3 and Euro 5 emission requirements. The optimized combustion chamber and ignition timing deliver clean operation without sacrificing power output.
Contact our team at sales@fourobot.com for technical specifications, pricing, and customization options tailored to your needs for Air-cool 280CC Engine.
Learn about our latest products and discounts through SMS or email