Estes Estes EST1606 18 mm B6-4 Standard Rocket Engine

This is a pack of three Estes B6-4 Model Rocket Engines. The Estes B6-4 engine is single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than four ounces, including the engine. Each includes three engines, three igniters and four igniter plugs. SpecificationsEngine Type: B6-4Total Impulse (N-sec): 5Time Delay (Sec): 4Maximum Lift Wt. (Oz/g): 4.0/113Maximum Thrust (Newtons/Lbs): 12.1/2.7Thrust Duration (Sec): 0.8Initial Weight (Oz/g): 0.71/20.1Propellant Weight (Oz/g): 0.22/6.24