Displacement :  152 cm3 Bore / Stroke :  48 / 42 mm Weight Without Ignition :  3530 g Ignition :  electronic, microprocessor    Guide >>> Ignition Weight :  210 g Carburetor :  Walbro Recommended Prop :  Mejzlik 30"x12" Mejzlik 32"x10"-12" Mejzlik 29"x12" N 3 Blade Description :  MVVS 152 Boxer    The engine is very close to our other type 116cc, but is equipped by the newly modified pistons also used in new 80cc. Even it may not be obvious at the first sight the crankcase of the engine in brand new. This engine is mainly intended for 150cc acrobatic class. The engine will also have an option to be supplied as Twin Spark (#3011TS), with two spark plugs on the cylinder and dual ignition system.    For the best use has been developed: AIR - System: equable cylinder charging, and ConT - Jet System: this controls richness of mixture for lightning acceleration.    Intake is controlled by reed valve placed in rear cover. Exhaust systems are orientated under engine. Crankshaft fitted on on two ball bearing and on one needle bearing and connecting rod has both holes equipped with needle bearings INA. Pistons are made from aluminum composition with high content of silicium. Pistons are coated by special sliding coat, which force running-in the engine and extend engine service life. Cylinders from aluminum composition have working area coated by NIKASIL.    Engine is suitable for all kind of models.