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🎅2025 Christmas Sale: 12% OFF Sitewide-Up to 50% OFF-> Code: XS12 Click Here for More Details!
🎅2025 Christmas Sale: 12% OFF Sitewide-Up to 50% OFF-> Code: XS12 Click Here for More Details!
SEMTO® Engine

SEMTO® Engine

Original price $199.99 - Original price $999.99
Original price
$199.99 - $999.99
$199.99 - $999.99
Current price $199.99

SEMTO ST-NF2 Engine 7cc SOHC Inline 2 Cylinders 4 Stroke Air Cooled Nitro Engine Model Kit - Build Your Own Engine that Works

SEMTO ENGINE ST-NF2 Engine 7cc SOHC Mini Inline 2-cylinder 4-stroke Air-cooled Nitro Engine Model Kit - TOYAN & SEMTO ENGINE Version Promo I...

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Original price $199.99 - Original price $999.99
Original price
$199.99 - $999.99
$199.99 - $999.99
Current price $199.99
Original price $199.99 - Original price $999.99
Original price
$199.99 - $999.99
$199.99 - $999.99
Current price $199.99

SEMTO ENGINE ST-NF2 7cc SOHC Inline 2 Cylinders 4 Stroke Air Cooled Nitro Engine Model Kit - FS-L200AC

OTTO MOTOR & TOYAN FS-L200AC Engine 7cc SOHC Mini Inline 2-cylinder 4-stroke Air-cooled Nitro Engine Model Kit Promo Info.:Early...

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Original price $199.99 - Original price $999.99
Original price
$199.99 - $999.99
$199.99 - $999.99
Current price $199.99
Original price $199.99 - Original price $289.98
Original price
$199.99 - $289.98
$199.99 - $289.98
Current price $199.99

SEMTO ENGINE ST-NF2 7.0cc Mini Inline Double-cylinder Four-stroke Air-cooled Nitro Engine Model Kit

SEMTO ENGINE ST-NF2 7.0cc Mini Inline Double-cylinder Four-stroke Air-cooled Nitro Interal Combustion Engine Model Kit FS-L200AC (Silver) Promo In...

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Original price $199.99 - Original price $289.98
Original price
$199.99 - $289.98
$199.99 - $289.98
Current price $199.99
Original price $159.99 - Original price $399.99
Original price
$159.99 - $399.99
$159.99 - $399.99
Current price $159.99

SEMTO ENGINE ST-NF2 7,0 куб.см Мини-рядный двухцилиндровый четырехтактный нитродвигатель внутреннего сгорания с воздушным охлаждением, комплект модели

SEMTO ENGINE ST-NF2 7,0 куб.см Мини-рядный двухцилиндровый четырехтактный нитродвигатель внутреннего сгорания с воздушным охлаждением, комплект мод...

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Original price $159.99 - Original price $399.99
Original price
$159.99 - $399.99
$159.99 - $399.99
Current price $159.99
Original price $999.99 - Original price $999.99
Original price
$999.99
$999.99 - $999.99
Current price $999.99

1/10 Scale 2.4G 4CH Nitro 4WD Off-Road Climbing RC Car with SEMTO ST-NF2 L2 Engine

1/10 Scale 2.4G 4CH Nitro 4WD Off-Road Climbing RC Car with SEMTO ST-NF2 L2 Engine (RTR/Without Car Shell) Product Information: Get ready for extre...

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Original price $999.99 - Original price $999.99
Original price
$999.99
$999.99 - $999.99
Current price $999.99
Original price $88.99 - Original price $88.99
Original price
$88.99
$88.99 - $88.99
Current price $88.99

Metal Fixing Bracket Base for SEMTO ST-NF2 Engine Model

Engine Fixing Bracket Base for SEMTO ST-NF2 Engine Model Features: .The starter mounting bracket base is compatible with SEMTO ST-NF2 engine mode...

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Original price $88.99 - Original price $88.99
Original price
$88.99
$88.99 - $88.99
Current price $88.99
Original price $159.99 - Original price $159.99
Original price
$159.99
$159.99 - $159.99
Current price $159.99

Ignition Set for SEMTO Engine ST-NF2 Nitro Engine Model

Ignition Set for SEMTO Engine ST-NF2 Nitro Engine ModelThe ignition set contains a Fuel Tank + Fuel Pipe + Mounting Base Set, 2 F-Type Electric Plu...

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Original price $159.99 - Original price $159.99
Original price
$159.99
$159.99 - $159.99
Current price $159.99
Original price $159.99 - Original price $159.99
Original price
$159.99
$159.99 - $159.99
Current price $159.99

12V DC Modified Generator Kit & Base for SEMTO ST-NF2 Engine Model DIY Modelling Kit

12V DC Modified Generator Kit & Base for SEMTO ST-NF2 Engine Model DIY Modelling Kit Features: 1. This is a modified micro DC generator model, ...

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Original price $159.99 - Original price $159.99
Original price
$159.99
$159.99 - $159.99
Current price $159.99
Original price $79.99 - Original price $79.99
Original price
$79.99
$79.99 - $79.99
Current price $79.99

SEMTO ST-NF2 L2 Nitro Engine Model Starter Ignition Kit

SEMTO ST-NF2 L2 Nitro Engine Model Starter Ignition Kit Packing list: 7.4-11.1V 3-in-1 Brush Start Ignition Power Module for Twin-Cylinder Engine M...

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Original price $79.99 - Original price $79.99
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$79.99
$79.99 - $79.99
Current price $79.99
Original price $112.99 - Original price $113.99
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$112.99 - $113.99
$112.99 - $113.99
Current price $112.99

Gas Conversion Kit for TOYAN FS-L200AC Nitro Engine - OTTO MOTOR & SEMTO ENGINE Version

Gasoline Conversion Kit Compatible with SEMTO ST-NF2 / OTTO MOTOR FS-L200AC Engine - Convert Your Nitro Engine to Gasoline Engine Promo Info.:Buy S...

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Original price $112.99 - Original price $113.99
Original price
$112.99 - $113.99
$112.99 - $113.99
Current price $112.99
Original price $27.99 - Original price $36.99
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$27.99 - $36.99
$27.99 - $36.99
Current price $27.99

Clutch Assembly Kit for SEMTO ST-NF2 Engine Model

Clutch Assembly Kit for SEMTO ST-NF2 Engine Model Features:Power Transmission Kit: Designed specifically for the SEMTO ST-NF2 inline twin-cylinder ...

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Original price $27.99 - Original price $36.99
Original price
$27.99 - $36.99
$27.99 - $36.99
Current price $27.99
Original price $59.99 - Original price $59.99
Original price
$59.99
$59.99 - $59.99
Current price $59.99

Miniature 12V DC Generator for SEMTO ST-NF2 Engine DIY Modification Motor

Miniature 12V DC generator for SEMTO ST-NF2 Engine DIY Modification Motor Features: 1. This is a miniature DC generator model with digital voltmete...

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Original price $59.99 - Original price $59.99
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$59.99
$59.99 - $59.99
Current price $59.99
Original price $89.99 - Original price $169.99
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$89.99 - $169.99
$89.99 - $169.99
Current price $89.99

12V Mini High Magnetic DC Generator Model for HOWIN/ENJOMOR/RETROL/SEMTO Engine Models DIY Modification (Blue)

12V Mini High Magnetic DC Generator Model for HOWIN/ENJOMOR/RETROL/SEMTO Engine Models DIY Modification (Blue)Features:.Made of alloy material, thi...

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Original price $89.99 - Original price $169.99
Original price
$89.99 - $169.99
$89.99 - $169.99
Current price $89.99
Original price $89.99 - Original price $89.99
Original price
$89.99
$89.99 - $89.99
Current price $89.99

SEMTO ST-NF2 Engine Starter Kit

SEMTO ST-NF2 Engine Starter KitThe starter kit contains 2 F-Type electric Plug, 1 3-in-1 brush start ignition power module, 1 oil tank and 1 oil pi...

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Original price $89.99 - Original price $89.99
Original price
$89.99
$89.99 - $89.99
Current price $89.99
Original price $113.99 - Original price $113.99
Original price
$113.99
$113.99 - $113.99
Current price $113.99

Gasoline Engine Conversion Kit for SEMTO ST-NF2 Nitro Engine Model Kit

Gasoline Engine Conversion Kit for SEMTO ST-NF2 Nitro Engine FS-L200AC Engine ModelFeatures:.The fuel conversion kit includes: spark plug x 2, flyw...

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Original price $113.99 - Original price $113.99
Original price
$113.99
$113.99 - $113.99
Current price $113.99
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Original price $10.99 - Original price $34.99
Original price
$10.99 - $34.99
$10.99 - $34.99
Current price $10.99

#88MXL Starting Belt for SEMTO ST-NF2 Engine FS-L200AC

#88MXL Starting Belt for SEMTO ST-NF2 Engine FS-L200AC-sku: 333441602ED/33ED3441602 Features: Material: plastic.Colour: as shown in the picture.Pro...

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Original price $10.99 - Original price $34.99
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$10.99 - $34.99
$10.99 - $34.99
Current price $10.99
Original price $29.99 - Original price $29.99
Original price
$29.99
$29.99 - $29.99
Current price $29.99

Connecting Rod and Piston Set for SEMTO ST-NF2 Engine Models

Connecting Rod and Piston Set for SEMTO ST-NF2 Engine Models Features: Connecting Rod and Piston Set for SEMTO ST-NF2 Engine Models Packing: Connec...

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Original price $29.99 - Original price $29.99
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$29.99
$29.99 - $29.99
Current price $29.99
Original price $12.99 - Original price $12.99
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$12.99
$12.99 - $12.99
Current price $12.99

Hall Sensor for SEMTO ST-NF2 Modified Gasoline Kit

Hall Sensor for SEMTO ST-NF2 Modified Gasoline Kit Features: Hall Sensor for SEMTO ST-NF2 Modified Gasoline Kit Packing: Hall sensor*1

Original price $12.99 - Original price $12.99
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$12.99
$12.99 - $12.99
Current price $12.99
Original price $33.99 - Original price $54.99
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$33.99 - $54.99
$33.99 - $54.99
Current price $33.99

#42 High-performance Starting Motor for SEMTO ST-NF2 & TOYAN×HOWIN FS-V800 Engine Models

#42 High-performance Starting Motor for SEMTO ST-NF2 & TOYAN×HOWIN FS-V800 Engine Models Features: 1. Starter motor for SEMTO ST-NF2 and TOYAN ...

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Original price $33.99 - Original price $54.99
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$33.99 - $54.99
$33.99 - $54.99
Current price $33.99
Original price $88.99 - Original price $88.99
Original price
$88.99
$88.99 - $88.99
Current price $88.99

Full Metal One Key Start Stand with Fuel Tank and Fuel Pipe for SEMTO ST-NF2, TOYAN L200AC, OTTO MOTOR Engine

Full Metal One Key Start Stand with Fuel Tank and Fuel Pipe for SEMTO ST-NF2, TOYAN L200AC, OTTO MOTOR Engine Features: 1. This mounting fixing bas...

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Original price $88.99 - Original price $88.99
Original price
$88.99
$88.99 - $88.99
Current price $88.99
Original price $112.99 - Original price $112.99
Original price
$112.99
$112.99 - $112.99
Current price $112.99

Gasoline Engine Conversion Kit for SEMTO ST-NF2 L2 Nitro Engine Models

Gasoline Engine Conversion Kit for SEMTO ST-NF2 L2 Nitro Engine Models Features: Scope of application: This modified gasoline version kit is specif...

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Original price $112.99 - Original price $112.99
Original price
$112.99
$112.99 - $112.99
Current price $112.99
Original price $26.99 - Original price $44.99
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$26.99 - $44.99
$26.99 - $44.99
Current price $26.99

2-in-1 Upgraded Exhaust Pipe for SEMTO ST-NF2 Engine Models

2-in-1 Upgraded Exhaust Pipe for SEMTO ST-NF2 Engine Models Features: .This exhaust pipe is exclusively designed for ST-NF2 engine models..Made of ...

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Original price $26.99 - Original price $44.99
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$26.99 - $44.99
Current price $26.99
Original price $42.85 - Original price $42.85
Original price
$42.85
$42.85 - $42.85
Current price $42.85

SEMTO ENGINE ST-NF2 7cc SOHC Inline 2 Cylinders 4 Stroke Air Cooled Nitro Engine Model Kit

SEMTO ENGINE ST-NF2 7cc SOHC Inline 2 Cylinders 4 Stroke Air Cooled Nitro Engine Model Kit High Simulation: The engine model with a realistic appea...

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Original price $42.85 - Original price $42.85
Original price
$42.85
$42.85 - $42.85
Current price $42.85
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Original price $499.99 - Original price $499.99
Original price
$499.99
$499.99 - $499.99
Current price $499.99

SEMTO ST-NF2 L2 Mini Gasoline Engine Model with 12V Generator & Stabilized Charging Module - Includes Base Ignition Set - One Key Start

Custom 12V DC Generator Set for SEMTO ST-NF2 L2 DIY Miniature Gasoline Engine Model KitProduct Information: The SEMTO ST-NF2 L2 Miniature Gasoline ...

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Original price $499.99 - Original price $499.99
Original price
$499.99
$499.99 - $499.99
Current price $499.99

The SEMTO Vision

SEMTO Engine, also known as SEMTO, is a brand devoted to creating science and education model engines that bridge the gap between mechanical theory and real-world engineering. Designed for learners, educators, and hobbyists, SEMTO model engines help people of all ages explore the fundamentals of mechanical operation through tangible, hands-on experience.

Rooted in the principles of science and education, SEMTO works closely with specialists worldwide to ensure its products combine educational value, technical accuracy, and high-quality craftsmanship. Each SEMTO model engine is not just a display piece—it’s an opportunity to understand the mechanical achievements of the industrial age.

What SEMTO Offers

Educational Model Engines

SEMTO’s product range covers multiple categories of science and education model engines, suitable for classrooms, exhibitions, and personal study.

  • Internal Combustion Model Engines – Realistic miniaturized engines for studying combustion principles.

  • Steam Engine Models – Classic mechanical systems demonstrating early industrial power sources.

  • Stirling Engine Kits – Low-heat or hot-air models ideal for thermodynamics lessons.

High-Precision Kits

Every SEMTO engine kit comes with professional assembly drawings, top-quality machined parts, and clear instructions, allowing builders to assemble a fully functional model while learning its engineering principles.

How to Choose the Right SEMTO Engine

1. Define Your Purpose

  • For Learning – Opt for transparent or cutaway designs to visualize internal components.

  • For Classroom Demonstrations – Select durable models with visible working mechanisms.

  • For DIY Enthusiasts – Go for detailed SEMTO engine kits to enjoy the building process.

2. Consider Engine Type

If you’re teaching thermodynamics, a Stirling engine model may be ideal. For mechanical engineering demonstrations, an internal combustion or steam model could be more relevant.

3. Match Skill Level

Beginners may prefer pre-assembled models, while experienced builders can enjoy complex kits that require more assembly skills.

Where to Buy SEMTO Engines

Genuine SEMTO model engines are available on EngineDIY.com, offering:

  • The latest SEMTO engine releases

  • Complete SEMTO engine kits

  • Original replacement parts and accessories

Caring for Your SEMTO Engine

Maintenance Tips

  • Keep the model clean and free from dust to ensure smooth operation.

  • Lubricate moving parts as recommended.

  • Store in a dry place to avoid rust or corrosion.

Frequently Asked Questions About SEMTO Engines

Q1: What is a SEMTO engine?
A: A SEMTO engine is a high-quality science and education model engine designed to help users understand the fundamentals of mechanical systems through hands-on interaction.

Q2: Are SEMTO model engines functional?
A: Many SEMTO models are operational, allowing users to observe the movement and mechanics in action.

Q3: How much does a SEMTO engine cost?
A: SEMTO engine prices vary depending on the type, complexity, and materials used.

Q4: Do SEMTO engines require assembly?
A: SEMTO offers both pre-assembled models and DIY SEMTO engine kits. Kits provide a more engaging learning experience.

Q5: Who are SEMTO engines suitable for?
A: Ideal for educators, students, science museums, engineering enthusiasts, and DIY hobbyists.

Final Thoughts

With a focus on education, precision, and accessibility, SEMTO engines make mechanical learning engaging and rewarding. Whether you’re teaching in a classroom, running a science workshop, or exploring engineering as a hobby, a SEMTO model engine is a powerful tool to bring science and technology to life.