J250FJ-L

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J250 Motor J250FJ Diameter 54mm Burn Time 2.9 seconds Average Thrust 250 Ns (56.2 lb-s) Total Impulse 731 Ns (164.34 lb-s) Motor Type Reload Motor data provided by ThrustCurve.orgT o convert Newtons to Pounds, divide by 4.448 Motor Data: RASP J250 BLACK MAX RELOAD Black Jack䋢 (J) and Black Max䋢 (FJ) Provides the high visibility tracking of dense black exhaust. In addition to a distinctive lift off roar, Black Jack motors give your models lower acceleration and longer powered flight than White Lightning or Blue Thunder motors of the same total impulse. Black Max provides slightly higher acceleration than White Lightning Propellant. Show more