A8-3 Engines
001598 - A8-3 Engines-2497
a8-5 engines thrust curve
A8-3 Engines

A8-3 Engines

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3 – A8-3 Engines
4 – Starters
4 – Starter Plugs

PLEASE NOTE: This item will ship by US Postal Service only. You MUST HAVE a physical mailbox or post office box for delivery.


The Estes A8-3 Rocket Engine is a single stage engine designed for model rocket flights. Estes 1598 contains an18 mm standard engine designed for flights in rockets weighing 3 ounces or less, including engine.

Each package includes:

  • 3 A8-3 Engines
  • 4 starters
  • 4 starter plugs

Estes 1598 is best for beginner-build level rocket kits that uses18 mm standard engines such as:

  • 1225 Alpha
  • 1256 Alpha III
  • 1261 Baby Bertha
  • 1292 Wizard
  • 1706 Orbis 3D


ATTENTION: Residents of California, New Jersey, Rhode Island and North Dakota please review the Terms of Sale for state specific restrictions  or Click Here for State Specific Restrictions.


Technical Specifications

Technical Specifications

  • Total Impulse

2.50 N-sec
  • Time Delay

3 Seconds
  • Max Lift Weight

3.0 oz (85 g)
  • Max Thrust

10.70 Newtons (2.4 lbs)
  • Thrust Duration

0.50 Seconds
  • Length

2.8 in. (7 cm)
  • Diameter

18 mm
  • Weight

.55 oz. (15.6 g)
  • Propellant Weight

0.14 oz (4.1 g)

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