010018 Estes B4-2 Engines - 18mm

010018 Estes B4-2 Engines 18mm 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 Impulse 5.00 N-sec Time Delay 2 Seconds Max Lift Weight 4.0 oz (113 g) Max Thrust 13.20 Newtons (3.0 lbs) Thrust Duration 1.10 Seconds Length 2.8 in. (7 cm) Diameter 18 mm Weight .66 oz. (18.7 g) Propellant Weight 0.27 oz (7.6 g) Please Note: Photos may not be of the same packaging, but nothing will be sold older than what is received from our distributor.  This item will ship by US Postal Service only from ModelRocketGuy.com at this time.