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 package includes three engines, three igniters and four igniter plugs.
Engine Type: B6-4
Total Impulse (N-sec): 5.0
Time Delay (Sec): 4
Maximum Lift Wt. (Oz/g): 4.0/113
Maximum Thrust (Newtons/Lbs): 12.1/2.7
Thrust Duration (Sec): 0.8
Initial Weight (Oz/g): 0.71/20.1
Propellant Weight (Oz/g): 0.22/6.24
Royal mail at £3.50, or Express at £6.95.
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