{"product_id":"retrol-okmo-1-7-scale-1115-mini-fixed-water-cooled-4-stroke-gas-engine-model","title":"RETROL \u0026 OKMO 1\/7 Scale  1115 Mini Fixed Water-Cooled 4-Stroke Gas Engine Model","description":"\u003cp\u003e\u003cstrong\u003eProduct Specifications:\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eMaterial: \u003c\/strong\u003eBrass + Aluminum Alloy\u003cbr\u003e\u003cstrong\u003eColor: \u003c\/strong\u003eAs shown\u003cbr\u003e\u003cstrong\u003eModel: \u003c\/strong\u003e1115\u003cbr\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 14.5 × 11 × 11.5 cm\u003cbr\u003e\u003cstrong\u003eWeight: \u003c\/strong\u003e1600g\u003cbr\u003e\u003cstrong\u003eConfiguration:\u003c\/strong\u003e RTR (Ready-to-Run)\u003cbr\u003e\u003cstrong\u003eEngine Type: \u003c\/strong\u003eStationary internal combustion gasoline engine\u003cbr\u003e\u003cstrong\u003eCylinder:\u003c\/strong\u003e Horizontal single-cylinder\u003cbr\u003e\u003cstrong\u003eStroke: \u003c\/strong\u003eFour-stroke\u003cbr\u003e\u003cstrong\u003eDisplacement: \u003c\/strong\u003e3.6cc\u003cbr\u003e\u003cstrong\u003eBore: \u003c\/strong\u003e16.0mm\u003cbr\u003e\u003cstrong\u003eStroke:\u003c\/strong\u003e 19.0mm\u003cbr\u003e\u003cstrong\u003eStarting Method:\u003c\/strong\u003e Electric drill start\u003cbr\u003e\u003cstrong\u003eCooling System: \u003c\/strong\u003eHopper-style evaporative water cooling\u003cbr\u003e\u003cstrong\u003eLubrication System: \u003c\/strong\u003eIndependent lubrication\u003cbr\u003e\u003cstrong\u003eIgnition System:\u003c\/strong\u003e Mechanical contact-point single-wire ignition\u003cbr\u003e\u003cstrong\u003eSpark Plug:\u003c\/strong\u003e Imperial thread 3\/16-40 (included)\u003cbr\u003e\u003cstrong\u003eStarter Power: \u003c\/strong\u003e1.5V (not included; requires 1 x AA battery)\u003cbr\u003e\u003cstrong\u003eFuel: \u003c\/strong\u003eGasoline (not included; 92# or higher recommended)\u003cbr\u003e\u003cstrong\u003eEngine Oil: \u003c\/strong\u003e(not included; 2T\/4T 5W40 recommended)\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Introduction:\u003c\/strong\u003e\u003cbr\u003eThe 1115 miniature gasoline engine is a precision replica of the classic 1115 agricultural diesel engine. This single-cylinder power unit once served as the core engine for a generation of Asian walk-behind tractors, irrigation pumps, and agricultural machinery. While this model operates via gasoline spark ignition, its external structure and mechanical design are derived directly from the 1115 diesel engine—featuring elements ranging from a cast brass body to a stainless steel flywheel—thereby faithfully reproducing the rugged, minimalist style that defined the mechanical reliability of the original. A standout feature distinguishing it from static display models is its authentic engine-driven piston oil pump lubrication system. Strictly adhering to the original 1115 diesel design, the piston oil pump delivers lubricant to critical moving parts, ensuring smooth operation, reducing wear, and extending the engine's lifespan. The mechanical structure faithfully replicates the internal lubrication logic of large agricultural diesel engines; it operates via a purely mechanical drive system, eliminating the need for electric pumps. It utilizes the same hopper-style evaporative water cooling system found on the original 1115 engine, mirroring the setup used in actual field operations. Heat is dissipated through natural evaporation, and the water tank features a convenient drain valve, allowing for quick and clean coolant drainage without the need for disassembly or tools. The ignition system has been upgraded to a single-wire configuration—offering cleaner wiring and improved reliability compared to the dual-wire setup seen in earlier product images. This mechanical spark ignition system allows for fine-tuning of ignition timing; users can manually advance or retard the timing to optimize starting performance, throttle response, and running smoothness—much like a seasoned mechanic tuning a classic engine in the field. Equipped with metal piston rings, the engine delivers superior compression, excellent thermal conductivity, and long-lasting durability, authentically replicating the feel and performance of a real engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Description:\u003c\/strong\u003e\u003cbr\u003e1. [A Tribute to the Classic 1115 Diesel Engine]\u003cbr\u003eInspired by the classic 1115 agricultural diesel engine, this model miniaturizes its iconic single-cylinder mechanical structure and retro industrial aesthetic. Designed at a scale of approximately 1:7 (measuring roughly 140×110×115mm), it features a single-cylinder configuration with a 16mm bore and 19mm stroke, resulting in a displacement of approximately 3.6cc. It runs on gasoline with spark ignition, paying homage to the classic 1115 diesel engine in both visual detail and mechanical design philosophy.\u003cbr\u003e2. [All-Metal Construction with a Retro Mechanical Feel]\u003cbr\u003eThe main engine body is crafted from cast brass, while the large flywheel is made of stainless steel. This combination ensures a premium metallic feel and captures the distinctive retro-industrial look of classic machinery. Unlike static models intended solely for display, this is a desktop-scale engine model featuring a fully functional mechanical operating system. \u003cbr\u003e3. [Mechanical Oil Pump Lubrication System]\u003cbr\u003eEquipped with an engine-driven piston-style oil pump, this model utilizes a mechanical drive mechanism to lubricate critical moving parts. It operates independently of electric oil pumps, allowing users to intuitively understand the principles of mechanical lubrication in small internal combustion engines. Paired with metal piston rings, it delivers a realistic mechanical feel during engine compression and operation.\u003cbr\u003e4. [Evaporative Water Cooling \u0026amp; Drainable Design]\u003cbr\u003eIt features a classic \"1115 diesel engine\" style evaporative water cooling structure. Heat generated during operation is dissipated through the natural evaporation of water in the reservoir, eliminating the need for a circulating water pump. The reservoir is equipped with a tap-style drain valve, allowing for easy drainage of cooling water after use without disassembling the tank or requiring additional tools.\u003cbr\u003e5. [Adjustable Ignition \u0026amp; Desktop Mechanical Collectible]\u003cbr\u003eUtilizing an upgraded single-wire mechanical ignition system, the model supports fine-tuning of ignition timing (advance\/retard). Users can adjust the timing based on actual operating conditions, experiencing the process of tuning a traditional mechanical engine. Centered around a functional single-cylinder gasoline engine structure, the product blends mechanical principles, retro industrial design, and desktop collectibility. It is ideal for engine model enthusiasts, mechanical engineering hobbyists, and collectors, as well as for desktop displays used to learn about single-cylinder engines, lubrication systems, and ignition timing principles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Age: \u003c\/strong\u003e16+\u003cbr\u003e\u003cstrong\u003ePackaging: \u003c\/strong\u003eBoxed\u003cbr\u003e\u003cstrong\u003ePackage Contents:\u003c\/strong\u003e\u003cbr\u003eEngine Model x1\u003cbr\u003eElectric Drill Starter Rod x1\u003cbr\u003eTool \u0026amp; Accessory Kit x1\u003cbr\u003eInstruction Manual x1 Set\u003c\/p\u003e","brand":"enginediyshop","offers":[{"title":"Default Title","offer_id":61806357971084,"sku":"3759642","price":680.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0548\/8377\/8700\/files\/29e47712-1930-4b52-88d5-e0bd8417468d.jpg?v=1790753910","url":"https:\/\/www.enginediyshop.com\/de\/products\/retrol-okmo-1-7-scale-1115-mini-fixed-water-cooled-4-stroke-gas-engine-model","provider":"enginediyshop","version":"1.0","type":"link"}