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RCGF 31cc  3.7HP 7800rpm Fixed Wing Twin Air Cooled Double-cylinder 2-stroke Gasoline Engine for RC Aircraft - Stirlingkit Turbofan & Jet Engines
Stirlingkit

RCGF 31cc 3.7HP 7800rpm Fixed Wing Twin Air Cooled Double-cylinder 2-stroke Gasoline Engine for RC Aircraft

✓ Precision Quality Inspected • Backed by 30-Day Guarantee
$499.99 USD

Engineering Summary

The RCGF 31cc 3.7HP 7800rpm Fixed Wing Twin Air Cooled Double-cylinder 2-stroke Gasoline Engine for RC Aircraft is a 31cc (1.89cu in) Turbofan & Jet Engine precision-engineered by Stirlingkit. Features construction machined from metal. Available for $499.99 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

27 Verified Parameters
For Ages 14+
Color As Shown
Material Metal
Model Type 2-stroke piston valve type gasoline engine for airplane
Cooling System Air cooling
Performance 3.7HP/7800rpm
Idle Speed 2000rpm
Static Thrust 17.2 lb (15kg) @328 ft (100m) height, 15.3 lb (13kg) @5900 ft (1800m) height
Displacement 31cc (1.89cu in)
Bore Diameter X Stroke (Mm) 1.26in(32mm) x 0.77in(19.6mm)
Compression Ratio 8:1
Lubrication Ratio 30:1
Carburetor Walbro
Ignition Method DC-CDI
Power Supply 6-14V
Spark Plug NGK-CM6
Requirements Gasoline, 2-stroke oil, ignition battery and propeller
Gasoline Pre-mixed fuel, 25-40 gasoline: 1 engine oil (recommended 30:1)
Lubricant 2-stroke oil
Recommended Propeller 18 x 8, 18 x 10, 19 x 8, 20 x 8
Exhaust Pipe Weight 2.7oz (76g) x 2
Igniter Weight 6.2oz (175g)
Host Weight 2.04 lb (927g)
Product Weight 927g
Package Dimensions 25 x 10 x 15cm
Package Weight 1300g
Packing Box

Features, Architecture & Package Contents

RCGF 31cc  3.7HP 7800rpm Fixed Wing Twin Air Cooled Double-cylinder 2-stroke Gasoline Engine for RC Aircraft

Features:


.The engine is specially designed for large fixed-wing aircraft models, with excellent quality and reasonable price.
.With smooth operation and strong power, you can get a smoother flight experience, bringing low-vibration stability and unique sound effects of horizontally opposed twins to your aircraft.
.We provide you with the best quality products and services, for the products have any questions, please consult us, we will provide you with the best quality after-sales service and protection.
.For Ages: 14+

Specifications:

.Color: As Shown
.Material: Metal
.Model Type: 2-stroke piston valve type gasoline engine for airplane
.Cooling System: Air cooling
.Performance: 3.7HP/7800rpm
.Idle Speed: 2000rpm
.Static Thrust: 17.2 lb (15kg) @328 ft (100m) height, 15.3 lb (13kg) @5900 ft (1800m) height
.Displacement: 31cc (1.89cu in)
.Bore Diameter x Stroke (mm): 1.26in(32mm) x 0.77in(19.6mm)
.Compression Ratio: 8:1
.Lubrication Ratio: 30:1
.Carburetor: Walbro
.Ignition Method: DC-CDI
.Power Supply: 6-14V
.Spark Plug: NGK-CM6
.Requirements: Gasoline, 2-stroke oil, ignition battery and propeller
.Gasoline: Pre-mixed fuel, 25-40 gasoline: 1 engine oil (recommended 30:1)
.Lubricant: 2-stroke oil
.Recommended Propeller: 18 x 8, 18 x 10, 19 x 8, 20 x 8
.Exhaust Pipe Weight: 2.7oz (76g) x 2
.Igniter Weight: 6.2oz (175g)
.Host Weight: 2.04 lb (927g)
.Product Weight: 927g
.Package Dimensions: 25 x 10 x 15cm
.Package Weight: 1300g
.Packing: Box

Package Content:

.1 x Engine
.1 x Exhaust Pipe
.1 x CDI Igniter
.1 x Spark Plug
.1Set x Screw
.1Set x Gasket
.1Set x Bracket
.1 x User Manual

Verified Builder Reviews

Authentic feedback from hobbyists, machinists, and scale model engineers

No written reviews have been submitted for this specific kit yet. Have you built the RCGF 31cc 3.7HP 7800rpm Fixed Wing Twin Air Cooled Double-cylinder 2-stroke Gasoline Engine for RC Aircraft? Email service@stirlingkits.com with your bench photos to share your build log.

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