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SEMTO ENGINE ST-NF2 DIY Build a Nitro 4 Stroke 2 Cylinder Engine Kit That Runs- FS-L200AC - SEMTO 4-Stroke & Inline Engines
SEMTO

SEMTO ENGINE ST-NF2 DIY Build a Nitro 4 Stroke 2 Cylinder Engine Kit That Runs- FS-L200AC

★★★★★
4.91 / 5.0 (99 verified reviews)
$329.98 USD

Engineering Summary

The SEMTO ENGINE ST-NF2 DIY Build a Nitro 4 Stroke 2 Cylinder Engine Kit That Runs- FS-L200AC is a 7 (3.5*2)cc 4-Stroke & Inline Engine precision-engineered by SEMTO. Features construction machined from metal and operating on 20-25% Nitro Fuel. Available for $329.98 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

28 Verified Parameters
Rocker Arm The short rocker arm makes the valve switch operation more accurate
Carburetor Enjoy easier adjustment and more sensitive throttle response thanks to the brand-new signal carburetor
Electrical Starting Equipped with a high-torque starting motor for a more convenient and smooth start
Material Metal
Brand OTTO MOTOR & SEMTO ENGINE
Model FS-L200AC / ST-NF2
Form Kit Version
Engine Type Nitro Interal Combustion Engine Model
Valve Mechanism SOHC
Displacement 7 (3.5*2)cc
Cylinder Inline Double-cylinder
Stroke 17.00mm
Cyilinder Diameter 16.6mm
Speed 4000-16000rpm
Power 0.6ps
Cooling Mode Air Cooling
Lubrication Mode Mixed Oil Lubrication (add grease)
Starting Mode Electric
Ignition Mode Ignition Modules (Not Included)
Type Of Electric Plug F-type Four-stroke Electric Plug (Not Included)
Starting Voltage 7.4V 2S Li battery (Not Included)
Fuel Type 20-25% Nitro Fuel
Product Dimensions 11.2 x 9 x 9.2cm
Product Weight 535g
Package Dimensions 14.5 x 11 x 11.2cm
Package Weight 800g
Packing Graphic Carton
Ages 14+

Features, Architecture & Package Contents

 

SEMTO ENGINE ST-NF2 DIY Build a Nitro 4 Stroke 2 Cylinder Engine Kit That Runs- OTTO MOTOR FS-L200AC

 

Note:The engine is equipped with a 480 brushed DC motor, and it is more suitable to use two ignition modules directly. you can buy it here. Now there is no need for an ESC, and it can be started directly by connecting a 2S battery. However, the output cable of the thermal head on the previous ESC can also be used. If you have these accessories before, there is no need to buy them again. The battery needs to be prepared by yourself.

IMPORTANT REMINDER!  The engine is in stock now. the order will be sent out within 1 working day.

Semto Twin Cylinder 4 Stroke RC Engine Get-Started Beginner Guide: click here 


Features:


.Toyan has a passion for machining the highest precision and quality scale engine models. Toyan indeed has released a few engines in assembly DIY versions. However, we find some students can't afford it even though they do like Toyan engines but not the price. So we discuss this with the Toyan engine team. Why not make an engine that everyone can afford? We hope every petrolhead college student can take it even if they have a low budget. In this case, the idea of making an entry-level come into Toyan mechanics' minds for a year. So they have started to design and make it several times. And they have also co-branded with SEMTO Engine & OTTO MOTOR to make brand-new 2-cylinder 4-stroke engine kits recently. That means the costs are greatly marked down.  so that is, OTTO MOTOR FS-L200AC ( or SEMTO ENGINE ST-NF2) - Simple, Easy To Use, and Intuitive. Just only 149.99$ and take this pocket-size engine home. (Please note that this is the entry-Level engine so the structure is simplified but it's fully functional. the size is smaller too) Please note that the engine after the order time December 12, 2022 will comes with the updated logo SEMTO ENGINE ST-NF2. They are the same engine except the name of logo. If you want the logo OTTO MOTOR there only, please contact service@stirlingkits.com

High Simulation: The engine model with a realistic appearance and red sport elements meaning thunderbolt movement is closer to a real engine.
.Miniature: Treated by aluminum CNC processing and oxidation coloring, the delicate engine features a meticulous surface, compact structure and lightweight body.
.Dual Synchronous Belt Pulley: The timing structure of a dual synchronous belt pulley greatly reduces the risk of gear jumping in high-speed operation.
.Rocker Arm: The short rocker arm makes the valve switch operation more accurate.
.Carburetor: Enjoy easier adjustment and more sensitive throttle response thanks to the brand-new signal carburetor.
.Electrical Starting: Equipped with a high-torque starting motor for a more convenient and smooth start.
.DIY: You can walk through the internal structure and mechanical operation principle of the engine while enjoying DIY assembling fun with the desktop engine model.
.Wide Applications: Blending perfectly with a gearbox for superior compatibility and an excellent guarantee to upgrade, the product makes a stunning mechanical artware, an ideal gift for mechanical engine enthusiasts and a superb teaching aid for demonstration teaching in physical&mechanical classes. So many of our clients are teachers from schools.
.Note: Starting Ignition set is not included, please prepare or buy it by yourself. If you have any questions about the product, please contact us in time.

Specifications:

.Material: Metal
.Brand: OTTO MOTOR & SEMTO ENGINE
.Model: FS-L200AC / ST-NF2
.Form: Kit Version
.Engine Type: Nitro Interal Combustion Engine Model
.Valve Mechanism: SOHC
.Displacement: 7 (3.5*2)cc
.Cylinder: Inline Double-cylinder
.Stroke: Four Stroke
.Cyilinder Diameter: 16.6mm
.Stroke: 17.00mm
.Speed: 4000-16000rpm
.Power: 0.6ps
.Cooling Mode: Air Cooling
.Lubrication Mode: Mixed Oil Lubrication (add grease)
.Starting Mode: Electric
.Ignition Mode: Ignition Modules (Not Included)
.Type of Electric Plug: F-type Four-stroke Electric Plug (Not Included)
.Starting Voltage: 7.4V 2S Li battery (Not Included)
.Fuel Type: 20-25% Nitro Fuel
.Product Dimensions: 11.2 x 9 x 9.2cm
.Product Weight: 535g
.Package Dimensions: 14.5 x 11 x 11.2cm
.Package Weight: 800g
.Packing: Graphic Carton
.Ages: 14+

Verified Builder Reviews (99)

Authentic feedback from hobbyists, machinists, and scale model engineers

4.91 / 5.0
★★★★★ (99 total)
Henry caldwell Verified Buyer
★★★

Semto NF2

First off the machining is wonderful on this little engine. Within two crank cycles, the glow plug igniter burned out. I have Tried new glow plugs with no luck . I have reached out to Stirlingkit for a replacement but haven’t heard back from them. On another note, the carburetor on this engine doesn’t work that well. I cannot get a good high end, needle, setting or low needle setting. The timing is correctly.

William Whited Verified Buyer
★★★★★

Semto two cylinder kit

I purchased this kit about a month ago. Very simple to build the instructions are very clear. I do wish they had a torque spec in the instructions. If you're looking to get into model engine building this one is perfect for children over 10 or even a beginner over 40. The machine work is incredible. I did upgrade the rod screws in mine because of reading about failures. The failures that happened could have been because of not correctly torquing the screws but for a few dollars at the local hobby shop why take a chance. Great kit enjoy.

PARK BYUNGCHULL Verified Buyer
★★★★★

This is great engine, I am very impressed

Far before, I worked at automobile company. I assembled so many cars. After that, I made this engine. This is almost real engine. And can easily start with 11.1 volt battery not with 7.4 volt.

Hans De Bruin Verified Buyer
★★★★★

Great little engine

Amazing quality for this price. It runs great.Personally I had some trouble with very tight fit on the flywheel. Later I found the extra tools to tap it into place easier. Live and learn. And the mixture screws were way off, so needed some time to get it running. All of that said, looking back, this really was a great buy. Very good value for money and a great addition to my collection.

William Rushing Verified Buyer
★★★★★

Best engine on the site

this is my 2nd one have yet to build it i like is so much and for the price you get more then what you pay for. runs great takes a lot of abouse have yet to have anything fail .

Anonymous Verified Buyer
★★★★

Motor sempto

Muy bonito para armar y apreder sobre el funcionamiento de motores una vez terminado quedo precioso

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