New gas engine especially designed for planes,RC Model Gas Engine with Muffler and Electronic Ignition, really well constructed and very friendly to use.The Roto motor is very high quality enginering product.We have a large shipment of Roto motor engines in stock now -distributor direct pricing means you save money!The factory warranty period of 24 months speaks very confidently to the extreme quality and reliability of their products. ROTO engines have rotary valves*. This is one of the main reasons for the incredible throttle response of ROTO RC gas engines. Most engineering experts agree that the rotary valve has brought the two-cycle engine its highest degree of efficiency and performance.
Crankcase - Is roughcast before being machined on a CNC milling cutter, it is then powder coated.
Cylinder - Made from a single piece of dural with a pressed liner made from mild-granular cast iron, it is then sharpened and honed to size.
Piston - Cast from silicon alloy with one piston ring. The Small end for the 8 mm gudgeon pin is honed to finish.
Conrod - Is forged, with two needle bearings pressed into the conrod.
Crankshaft - Is a one-piece steel item, hardened, balanced to a high precision.
Back-plate - Is a cast item, which is hardened, shaped and then rolled.
Good news for pilots of .90-1.20-sized aircraft: the ROTO 25V/25cc gasoline engine is now available with electronic ignition