B4-4 Engines (EST1602)

B4-4 Engines (EST1602)

Standard 18mm Engines for Model Rockets

16.95 16.95 16.95 CAD2022-02-13 22:03:116.0 6.0 Back in Stock#428BCATrue16.95

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SKU: 047776016026

Safety Warning This product may contain sharp points, small parts that are choking hazards, or other elements that are not suitable for children.


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001602 - B4-4 Engines Description

The Estes B4-4 engine is single stage engine designed for model rocket flight. This engine is a standard engine designed for flights in rockets weighing less than 3.5 ounces, including the engine.  

Each package includes:

  • 3 engines
  • 3 starters
  • 4 plugs
Technical Specs
  • Length: 2.8 in. (7 cm)
  • Diameter: .7 in. (18 mm)
  • Estimated Weight: .68 oz. (19.3 g)
  • Total Impulse: 5.00 N-sec
  • Time Delay: 4 Seconds
  • Estimated Max Lift Weight: 3.5 oz (99 g)
  • Max Thrust: 13.20 Newtons (3.0 lbs)
  • Thrust Duration: 1.10 Seconds
  • Initial Weight: 0.68 oz (19.2 g)
  • Propellant Weight: 0.27 oz (7.6 g)
  • Quantity Per Pack: 3