15cc Vertical OHV Single-cylinder Four-stroke Internal Combustion Engine Model Physical Experiment Educational Toys -

Features:

Industrial Engine: This vertical OHV single-cylinder, four-stroke gasoline engine has an intensely industrial style. It is equipped with an electronic igniter, an independent lubricating system that allows the engine to be filled separately, a flexible cylinder head that can open and close, and a half-perspective window that enables the user to see the engine's internal workings.

Delicate Technology: The crankshaft is treated with hard chrome electroplating following 40Gr quenching, tempering, and finish turning, with a hardness of 55HRC and a precision of 0.01mm. All aluminum alloy parts are processed using CNC machine tools, electric pulse, line cutting, and machining with a precision of 0.02mm. The main shafts, main shaft gears, and cam and camshaft provide a robust and long-lasting assembly with shrink fit. The valve is assembled with alloy valve pipe for wear and heat resistance, and it uses 40Gr quenching, tempering, and finish turning.

Excellent Craft: The unique desktop engine model is easy to use and beginner-friendly, allowing you to enjoy the engine's charming mechanical function. It has a robust and sturdy structure and can run for 30 minutes on average.

Collectible Gift: For those who enjoy machines and engine models, this model is a fantastic addition to any collection. Perfect as a sophisticated and imaginative gift for friends and family and an engaging science instructional toy.

Notes: The basic edition, which includes the igniter, does not contain the base, power distribution cabinet, or tank. If necessary, purchase the high-end edition. To prevent the machine from being damaged or misused, please operate it according to the instructions.

Suitable for those over 14.

Specifications:

.Material: Metal

.Bare Weight: 1.9kg

.Displacement: 15CC

.Cylinder Diameter: 25mm

.Stroke: 24mm

.Compression Ratio: 5/1

.Valve Mechanism: OHV (Overhead Valve)

.RPM Range: 800-5000rpm

.Lubrication Method: Wet Sump/Splash Lubrication

.Lubricating Oil Type: 5W40（4T）

.Lubricating Oil Filling Capacity: 25mL on Open Cylinder Head/35mL on Enclosed Cylinder Head

.Cooling Mode: Air-cooling

.Starting Mode: Manual Pull (Rope)

.Ignition method: CDI Electronic ignition

.Starting Voltage: Approx 6V (Without Battery)

.Product Dimensions: 21 x 12 x 27cm

.Product Weight: 2200g

.Package Dimensions: 25 x 15 x 32cm

.Package Weight: 2500g

.Packing: Box