Estes 1/2A3-2T Engine - 4 Pack This item is limited to quantities on hand. Once in-stock quantities sell out this item will no longer be available. About: The Estes A3-4T engine is single stage engine designed for model rocket flight. This engine is a mini engine designed for flights in lightweight rockets. Each package includes 4 engines, 4 starters and 4 starter plugs. ATTENTION: Residents of California, New Jersey, Rhode Island and North Dakota please review the Terms of Sale for state specific restrictions or Click Here for State Specific Restrictions. Technical Specifications: Length 1.8 in. (4.6 cm) Diameter 13 mm Estimated Weight .28 oz. (7.9 g) Total Impulse 2.50 N-sec Time Delay 4 Seconds Estimated Max Lift Weight 2.0 oz (57 g) Max Thrust 6.80 Newtons (1.5 lbs) Thrust Duration 0.60 Seconds Initial Weight 0.28 oz (8.0 g) Propellant Weight 0.12 oz (3.3 g) Quantity Per Pack 4
