Toyan FS-S100AC DIY 4 Stroke Methanol RC Engine Kit 3.5cc Nitro Motor
Hero Section: Build the Heart of Your Machine
There is a profound difference between buying an engine and giving birth to one. The Toyan FS-S100AC isn't just a box of parts; it is a journey into the soul of internal combustion. Imagine the satisfaction of assembling 130 precision metal components, tuning the carburetor, and finally hearing that first aggressive roar of a 3.5cc beast you built with your own hands. Whether you are upgrading a 1:10 RC crawler, building a custom speed boat, or simply want to master the mechanics of a 4-stroke engine, this kit delivers an adrenaline rush that electric motors simply cannot match.
Why Choose the Toyan FS-S100AC?
- True DIY Mastery: This is the ultimate "grown-up LEGO." You aren't just installing an engine; you are assembling the crankshaft, pistons, valves, and camshafts. It’s a hands-on masterclass in mechanical engineering that builds patience, logic, and immense pride.
- Small Size, Massive Power: Don't let the palm-sized dimensions fool you. This 3.5cc engine pumps out 0.5 horsepower and screams up to 13,500 RPM. It delivers the visceral sound, smell, and vibration that only a real nitro engine can provide.
- Versatile Application: Designed with a compact footprint, it is the perfect power plant for 1:10, 1:12, or 1:14 scale RC cars, boats, and airplanes. It transforms a standard model into a high-performance, gas-burning machine.
- The Ultimate STEM Gift: For a teenager (14+) or a hobbyist adult, this is more than a gift; it’s a skill. It bridges the gap between theory and reality, teaching the physics of the "Suck, Squeeze, Bang, Blow" cycle in the most engaging way possible.
Technical Highlights: Precision in Motion
- Real 4-Stroke Cycle: Unlike simpler 2-stroke engines, this model features a complex valvetrain with intake and exhaust valves, offering a more realistic sound and torque curve.
- Methanol Power: Optimized for performance, it runs on a mixture of methanol and nitromethane (20-25% nitro recommended). This fuel provides high energy density and consistent combustion.
- High-Revving Design: With a bore of 17.0mm and a stroke of 17.0mm, the engine is square-designed for a balance of torque and high-RPM horsepower, capable of idling at 2,500 RPM and redlining at 13,500 RPM.
- Adjustable Carburetor: Just like a full-sized car, you can tune the air-fuel mixture. Mastering the "needle valve" allows you to optimize performance for different weather conditions and altitudes.
Specifications
- Model: Toyan FS-S100AC (DIY Assembly Kit)
- Material: Alloy Steel / Aluminum / Composite
- Part Count: 130+ Pieces
- Displacement: 3.5cc
- Bore: 17.0mm
- Stroke: 17.0mm
- Output Power: 0.5ps
- RPM Range: 2,500 - 13,500 RPM
- Dimensions: 100.5 x 85.4 x 86.5mm
- Weight: 800g (Engine) / 1000g (Package)
- Fuel: Methanol Fuel (20-25% Nitromethane content recommended)
- Required Accessories (Not Included): Glow Plug, Glow Plug Cap/Driver, ESC (for starter), 7.4V Battery (for starter), 11.1V Battery (for ESC), Fuel Tank, Fuel Lines.
Usage Scenario: The Garage Symphony
It’s a Saturday morning. You’ve spent the last few evenings carefully assembling the cylinder head and timing belt. Now, the engine is mounted on your test stand. You connect the fuel line, prime the carb, and attach the glow plug driver. You hit the starter button. The engine coughs, then catches—settling into a fast, rhythmic idle. The smell of nitro fills the air. You blip the throttle, and the engine responds with a sharp, high-pitched scream. You didn't just buy this power; you created it.
Important Tips from the Workshop
- Troubleshooting a No-Start:
- Power Check: Ensure your 7.4V starter battery is fully charged. A weak battery won't spin the engine fast enough to ignite.
- Glow Plug: Remove the glow plug and test it against the driver. If it doesn't glow bright orange, the engine will never start.
- Fuel Delivery: Check the fuel lines for air bubbles. If the engine isn't sucking fuel, reset the carburetor needle to the factory default (usually flush with the housing) and try again.
- Timing is Everything: If you assembled the timing belt incorrectly, the valves won't open at the right time. Double-check the timing marks in the manual.
- Safety First: The cylinder head gets extremely hot, and the cooling fan spins at high speeds. Keep fingers and loose clothing away during operation.
- Break-In: A new engine needs a "break-in" period. Run the first few tanks of fuel at a rich setting (more fuel, less air) and low RPM to allow the piston ring to seat perfectly.
Customer Support
Building an engine is a complex task, and we are here to help you succeed. If you need help with tuning, assembly advice, or spare parts, please contact our technical support team at service@helloworld7.com.
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