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YS Engines - YS 61 ST-2 Helicopter

The YS 61 ST-2 is the second generation of the ST Series. It is not modified aircraft engine, but a specifically designed helicopter engine to meet the demands of the most experienced of competition flyer while retaining easy operating characteristics for the sport flyer. The ST-2 features a new short stroke piston and cylinder design and an all new carburetor with low end adjustement and 3 independent needle systems. Added to the new style pressure regulated fuel pump system, you have an unbeatable performer for helicopter flying.

Specifications
RPM Range:     2,000 to 18,000 RPM Prop Sizes:       Helicopter Weight:            19.14 oz.	YS 61 ST-2