Overview

The Toki-40H is a powerful .40 size engine in a .30 size case, with operating range of 2,000 to 21,000 RPM. This is a ball bearing engine with a ringed piston and silicon carbide plated cylinder sleeve. Any muffler for .36 to .39 size engines can be used. We recommend the Toki special tuned muffler for optimum performance. It is a .40 engine with near .50 size performance. No bench running-in means you’ll be taking to the skies in no time, (perform the running in in the model by opening the needle valve ¼ to ½ turn more than normal). This new engine will deliver the highest level of premium performance for .30 sized helicopters, from ultra-stable hovering to extreme 3D. For easy installation the engine mounting dimensions are the same as popular sized .32 engines. The Toki-40H will fit into any .30 sized heli that uses a fan hub that doesn’t require an engine drive washer. The Toki-40H is capable of powering a helicopter with a gear ratio of 9.625:1 and blades up to 600mm in length. For peak performance, Toki’s tuned muffler is optimally matched to this engine.Specifications include: Size: 6.66cc / 0.403 cu in Bore 21.6mm / 0.85 in Stroke 18.0 mm / 0.71 in Weight (engine only) 324g / 11.43 oz Suggested fuel: 15 to 30% ‘high quality’ nitro with minimum of 20% oil Normal needle setting 3-3/4 turns Horsepower: 1.4 or better depending on fuel and muffler used