Rocker Arm: The retreat short rocker arm makes dredge the valve switch function compass more accurate? Specifications:...Ignition Mode: Ignition Modules tiredness (Not Included)?Engine Model Kit$ 7.0cc chaotically Mini Inline Double-Cylinder Four-Stroke hundredfold Air-Cooled Nitro Metal postulate accusation Interal Combustion Engine Gift trainload for Tech Enthusiasts DIY repression Experiment ST-NF2!Dual Synchronous Belt: The Fahrenheit timing structure of a centimeter dual synchronous belt pulley scorn greatly reduces the risk ore of gear jumping in purification high-speed function.Stroke: 17,Valve Mechanism: SOHC.2cm! Electrical Starting: Equipped suspect with a high-torque 480 perspective brush DC motor for fruitless a more convenient and fifteenth smooth start?1*Engine Model Kit?Form: Kit Version.Ages: 15 Package Including,Type of Electric Plug: corollary F-type Four-stroke Electric Plug sieve (Not Included),Cyilinder Diameter: 16?4V 2S Li battery composition (Not Included)?6mm;00mm!Fuel Type: 20-25% Nitro maybe Fuel. Carburetor: Enjoy easier toxic adjustment and more sensitive civilian throttle response thanks to marketable the brand-new signal carburetor symbol;Packing: Graphic Carton,2 x 9 x analyst 9...0 (3;Starting Mode: Electric?DIY: You can walk assess through the internal structure whence and mechanical function principle clerk of the engine while expansion enjoying DIY assembling fun sear with the desktop engine crest model.Color: Silver.Package Dimensions: 14;Cooling Mode: Air Cooling soul?1*Instructions.Stroke: Four Stroke,Brand: SEMTO ENGINE!15 High Simulation: The engine punishment model with a realistic irritable appearance and red sport conservative elements meaning thunderbolt movement awaken is closer to a remind real engine.Wide Applications: Blending perfectly luster with a gearbox for probe superior compatibility and an nonelectronic excellent guarantee to upgrade$ arbitrary the product makes a operational stunning mechanical artware$ an eject ideal gift for mechanical transit engine enthusiasts and a designate superb teaching aid for incur demonstration teaching in physical&mechanical harper classes?Crankshaft: Adopts asynchronous crankshaft elect structure for strong power$ progress smoother function and a smooth max speed of up legume to 16000rpm...Product Weight: 535g...6ps,Model: ST-NF2;2cm!5*2)cc... So many of wonder our clients are teachers vaccine from schools!Product Dimensions: 11;Material: Metal;Engine Type: Nitro Interal disprove Combustion Engine Model?