Displacement: 3,49 cc R.P.M. (max power): 39.100 RPM Practical range: 6.000-46.300 R.P.M. Bore x stroke: 16,26x16,80 mm Sleeve: 9 ports Rear ball bearings: ceramic Front ball bearings: steel Crankshaft: 14,5 mm - turbo Carburetor: aluminium - 9 mm - slide Glowplug: Turbo (C7TGF) Exhaust position: rear Starting: - Weight: 336 g Fuel type: 25% nitro
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Piston: The material of this piston is choosen for its excellent strength to weight properties. The shape of the top of the piston is our 'Compact Combustion Tecnology' which improves the efficiency of the engine. This piston is also milled from a single block which further increases the strength.
Sleeve: The sleeve has 9 transfer ports and an exhaust with booster ports. The special shape and positioning of the ports, covered by a patent, improve the internal fluid-dynamics to obtain the maximum possible performance.
Crankshaft: The crankshaft is grinded to increase the mixture flow and has a special shape to reduce turbulences inside the crankcase. The balancing is done by two inserts made of tungsten alloy and the inlet has a silicon filling to reduce the weight of the crankshaft to improve acceleration. The ball bearing was lowered to 5mm.
Compression rings: The ignition timing is controlled with these little rings of various thickness. To change the ignition timing you can add or remove a ring of a certain thickness.
Conrod: The R7 conrod is made from a superlight alluminium which has been checked ultrasonic. The specific form of the R7 creates little turbulence inside the engine while running.
Rear Cover: The rear cover presents a round shape to optimize the filling and reducing the dead spaces. the steel plate is to reduce friction and to expand the lifespan of the conrod.
Rear ball bearing: The rear ball bearing has high quality ceramic balls to minimize wear and inertia to improve acceleration and fuel consumption.
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