B4-4 Engine

The Estes B4-4 Rocket Engine 3-Pack is an 18 mm, single-staged engine designed for model rocket flights. This engine is a standard engine designed for flights in rockets weighing less than 3.5 ounces, including the engine.

Specs:

• Total Impulse    5.00 N-sec
• Time Delay    4 Seconds
• Max Lift Weight    3.5 oz (99 g)
• Max Thrust    13.20 Newtons (3.0 lbs)
• Thrust Duration    1.10 Seconds
• Length    2.8 in. (7 cm)
• Diamter    18 mm
• Weight    .68 oz (19.3 g)
• Propellant Weight    0.27 oz (7.6 g)

Contents:

• 3 – B4-4 Engines
• 4 – Starters
• 4 – Starter Plugs

Used with permission, copyright ©2024 Estes Rockets. Copyright ©2024 Brey Corp. t/a Hobby Works.®

WARNING: This product can expose you to chemicals including silica, which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov