010018 Estes B4-2 Engines - 18mm

010018 Estes B4-2 Engines18mm The Estes B4-2 is a dependable single stage model rocket engine built for consistent, enjoyable flights in lightweight rockets. Designed to deliver steady, usable thrust for rockets under 4 ounces, this engine gives hobbyists reliable lift and smooth flight profiles that make launching simple and satisfying. Whether you are teaching a new rocketeer, flying at a club launch, or enjoying backyard hobby flights, the B4-2 balances performance and predictability. Its clean burn and dependable ignition help reduce launch day surprises so you can focus on building great flights and good memories. Includes: - 3 B4-2 Engines - 4 Starters - 4 Starter Plugs Technical Specifications Total Impulse5.00 N-sec Time Delay2 Seconds Max Lift Weight4.0 oz (113 g) Max Thrust13.20 Newtons (3.0 lbs) Thrust Duration1.10 Seconds Length2.8 in. (7 cm) Diameter18 mm Weight.66 oz. (18.7 g) Propellant Weight0.27 oz (7.6 g) Please Note: Photos may not be of the same pack