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RETROL & OKMO B02 3.6cc Gas Hit and Miss Engine Model One-Key-Start Full Set RTR - RETROL Engine Models
RETROL
Engine Models SKU: SK3694766

RETROL & OKMO B02 3.6cc Gas Hit and Miss Engine Model One-Key-Start Full Set RTR

★★★★★
5.00 / 5.0 (1 verified review)
$429.99 USD

Engineering Summary

The RETROL & OKMO B02 3.6cc Gas Hit and Miss Engine Model One-Key-Start Full Set RTR is a 3.6cc Engine Model precision-engineered by RETROL. Features construction machined from metal + wood and operating on Recommended 92# Gasoline or Higher (Not Included). Available for $429.99 USD with free worldwide tracked shipping, 30-day returns, and replacement parts support at Stirlingkit.

✓ Free Worldwide Shipping: Tracked air delivery in 5–14 business days.
✓ Missing Parts Guarantee: Free replacement parts dispatched within 7 days.
✓ 30-Day Risk-Free Returns: Full refund on unbuilt kits in original box.

Technical Specifications

26 Verified Parameters
Material Metal + Wood
Color Red
Model B02
Form Ready to Run (RTR)
Engine Type Gasoline Internal Combustion Engine
Cylinder Horizontal Single Cylinder
Stroke 19.0mm
Displacement 3.6cc
Bore 16.0mm
Speed 500-3000rpm
Power Approx. 0.2ps
Starting Method Manual/Drill Starter
Cooling Method Evaporative Water Cooling
Lubrication Method Mixed Oil Splash-Lubrication
Lubrication Ratio Gasoline/Engine Oil 25:1 to 30:1
Ignition Method Mechanical Trigger Ignition (Including Ignition Plug)
Spark Plug Imperial Thread 3/16-40 (Including Spark Plug)
Starting Power 1.5V AA Battery *1 (Battery Not Included)
Fuel Recommended 92# Gasoline or Higher (Not Included)
Engine Oil Recommended 2T/4T 10W50 Engine oil (Excluding Lubricant)
Product Weight 1800g
Package Weight 2000g
Product Dimensions 25.5 x 11 x 13cm
Package Dimensions 28 x 16 x 20cm
Packing Graphic Carton
Age 16+

Features, Architecture & Package Contents

RETROL & OKMO B02 3.6cc Gas Hit and Miss Engine Model RTR 

Features: 


.Early Agricultural Powertrain Reference: Built at approximately 1/4 scale, this horizontal engine recreates the structural characteristics of early 20th-century agricultural power units. The exposed flywheel and intermittent ignition reflect the operational logic used before widespread electrification.
.Ready-to-Run Mechanical Configuration: Delivered in RTR form, the engine features a mechanical ignition system and supports manual or electric drill starting. A solid wooden base provides operational stability, allowing the running cycle of a four-stroke engine to be observed within minutes.
.Precision Metal Engineering with Authentic Mass: Constructed primarily from machined metal components, the model conveys realistic weight, surface texture, and mechanical feedback. The vintage red finish highlights classic industrial aesthetics while helping reduce surface oxidation during repeated operation or display.
.Display-Oriented Mechanical Centerpiece: Suitable for placement in studies, workshops, offices, or display cabinets, the engine presents both visual presence and functional interest. Its operating motion and exposed mechanisms naturally draw attention and invite discussion.
.Mechanical Observation and Knowledge Exploration: The intermittent firing cycle provides a clear view of early internal combustion logic, making the engine a tangible reference for understanding mechanical timing, power transmission, and historical engine design principles.

Specifications: 

.Material: Metal + Wood
.Color: Red
.Model: B02
.Form: Ready to Run (RTR)
.Engine Type: Gasoline Internal Combustion Engine
.Cylinder: Horizontal Single Cylinder
.Stroke: Four-stroke
.Displacement: 3.6cc
.Bore: 16.0mm
.Stroke: 19.0mm
.Speed: 500-3000rpm
.Power: Approx. 0.2ps
.Starting Method: Manual/Drill Starter
.Cooling Method: Evaporative Water Cooling
.Lubrication Method: Mixed Oil Splash-Lubrication
.Lubrication Ratio: Gasoline/Engine Oil 25:1 to 30:1
.Ignition Method: Mechanical Trigger Ignition (Including Ignition Plug)
.Spark Plug: Imperial Thread 3/16-40 (Including Spark Plug)
.Starting Power: 1.5V AA Battery *1 (Battery Not Included)
.Fuel: Recommended 92# Gasoline or Higher (Not Included)
.Engine Oil: Recommended 2T/4T 10W50 Engine oil (Excluding Lubricant)
.Product Weight: 1800g
.Package Weight: 2000g
.Product Dimensions: 25.5 x 11 x 13cm
.Package Dimensions: 28 x 16 x 20cm
.Packing: Graphic Carton
.Age: 16+

Verified Builder Reviews (1)

Authentic feedback from hobbyists, machinists, and scale model engineers

5.00 / 5.0
★★★★★ (1 total)
Thomas PCGuru ENGINES Verified Buyer
★★★★★

THE NEW KING - best serious beginner Hit and Miss...it's that good

Taking the crown from MUSA HM-01 and blowing away Enjomor's 6cc engine, Jin from OKMO has a major success on his hands. See my full review of this engine...runs perfect out of the box and the quality is 2026 exceptional. Mine was perfectly tuned. Attractive price, great looks, years of experience in the making...well done Jin from OKMO

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