Estes A3-4T Mini Rocket Engine (4)

This is a pack of four Estes A3-4T Mini Model Rocket Engines. The Estes A3-4T engine is a single stage engine designed for flights in lightweight model rockets. Each package includes four engines, four igniters and four igniter plugs. Specifications: Engine Type: A3-4T Total Impulse (N-sec): 2.50 Time Delay (Sec): 4 Maximum Lift Wt. (Oz/g): 2.0/57 Maximum Thrust (Newtons/Lbs): 6.8/1.5 Thrust Duration (Sec): 0.6 Initial Weight (Oz/g): 0.27/7.6 Propellant Weight (Oz/g): 0.12/3.50