RETROL & OKMO B04 Miniature 4-Stroke Hit and Miss Gasoline Engine Model RTR
Product Information:
Classic Amanco Farm Engine Heritage:
Based on American Amanco agricultural engines from the 1910s to 1930s, this 1/4-scale Hit and Miss engine model captures the character of early air-cooled stationary engines. Its centrifugal flyweight governor controls intermittent firing and coasting, producing the characteristic "pulse and idle" pattern associated with historic farm machinery.
Ready-to-Run Design with Two Starting Methods:
Supplied pre-assembled and factory-adjusted, this RTR engine model requires no sanding or assembly before setup. Start it by manually turning the flywheel or use the included drill-start shaft for assisted starting. The wooden base helps stabilize the unit during operation. Follow the manual for lubrication, fuel mixing, and ignition setup before starting.
Exposed CNC-Machined Mechanical Structure:
The aluminum-alloy body features an open crankshaft mechanism that makes the moving components visible for observation and maintenance. Mechanical touch ignition, a stainless-steel-spoke flywheel, and a brass cooling fan showcase the engineering details of traditional stationary engines. The open design offers a hands-on way to explore classic mechanical construction.
Functional Display for Workshops and Collections:
Mounted on a wooden base, this vintage-style engine can be displayed in a study, workshop, office, or mechanical collection cabinet. Start the engine to observe its intermittent firing cycle, or keep it as a static display piece. Designed for antique engine enthusiasts, miniature engine collectors, and fans of historical agricultural machinery.
Practical Demonstration of Engine Principles:
The exposed mechanical linkages provide a clear view of centrifugal governing, valve movement, and touch ignition during operation. This working model helps demonstrate the operating principles of a four-stroke internal combustion engine and the Hit and Miss governing system, making it suitable for adult hobby projects, engineering demonstrations, and historical machinery study.
Specifications:
.Model: B04 .Ready Status: Ready to Run (RTR) .Material: Aluminum Alloy + Wood .Color: Green/Red .Engine Type: Horizontal Single-Cylinder Four-Stroke Gasoline Internal Combustion Engine .Displacement: 3.6 cc .Bore: 16.0 mm .Stroke: 19.0 mm .Governing System: Hit and Miss .RPM Range: 500–3000 rpm .Power Output: Approximately 0.2 PS .Starting Methods: Manual Flywheel Starting / Drill-Assisted Starting .Cooling Method: Air-Cooled .Lubrication Method: Mixed-Fuel Lubrication .Gasoline-to-Oil Mixing Ratio: 25:1–30:1 .Ignition System: Mechanical Touch-Triggered Ignition .Ignition Power Supply: 1 × 1.5V AA Battery (Battery Not Included) .Fuel: 92# / 95# or Higher-Grade Unleaded Gasoline (Fuel Not Included) .Engine Oil: Recommended 2T/4T 10W50 Engine Oil (Lubricating Oil Not Included) .Product Weight: 1700g .Package Weight: 1800g .Product Dimensions: 22.5 x 11.5 x 13cm .Package Dimensions: 27 x 16 x 18cm .Packaging: Graphic Carton .Age: 16+
Packing List:
.Engine Unit *1 .Electronic Control Box *1 .Wood Base *1 .Fuel Tank *1 .Fuel Line *1 .Drill-Starting Shaft *1 .Spare Parts Kit *1 .User Manual *1
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