Fits the RC10B74

Large fins dissipates heat for a cooler running motor

realistic drift action at 1/10th scale

Built-in capacitor: Super large built-in capacitor of the ESSC is as high as 1640uF

Don't worry

Estes Rockets - F15-6 29mm Model Rocket Engines (2pk) HPI106173 Fits the RC10B74Take your mid powered rocket flights to new heights with the Estes F15 6 Engine. This 29mm engine packs an impressive 49. 61 N sec total impulse and delivers a maximum thrust of 25. 26 Newtons giving your rockets the boost they need for strong, stable launches. It's ideal for experienced modelers looking for consistent, long duration thrust and reliable performance across a wide variety of heavier rocket designs. With a 6 second delay between burnout