Estes Rocket Motors - A8-3 (Pack3)

The Estes A8-3 is a standard, single-stage 18 mm model rocket engine designed for reliable flights in lightweight models. Supplied as Estes Rocket Motors - A8-3 (Pack3), part number D-ES1598, it is intended for rockets weighing less than 3 ounces (including the engine) and features a 3-second delay for ejection. Delivering 2.50 N-sec total impulse with up to 10.70 N of thrust over a 0.50-second burn, it is a popular choice for small, low-mass rockets.

What’s Included

• 3 x A8-3 engines
• 4 x starters
• 4 x starter plugs

Key Specifications

• Length: 2.8 in. (7 cm)
• Diameter: 18 mm
• Estimated Weight: .55 oz. (15.6 g)
• Total Impulse: 2.50 N-sec
• Time Delay: 3 Seconds
• Estimated Max Lift Weight: 3.0 oz (85 g)
• Max Thrust: 10.70 Newtons (2.4 lbs)
• Thrust Duration: 0.50 Seconds
• Initial Weight: 0.55 oz (15.5 g)
• Propellant Weight: 0.14 oz (4.1 g)
• Quantity Per Pack: 3