1/2A3-4T Model Rocket Engine Bulk Pack
1/2A3-4T Engine Bulk Pack Unboxed
001788 - 1/2A3-4T Engine Bulk Pack-2700
001503 - 1/2A3-2T Engines-2474
Model Rocket Thrust Curve Example
1/2A3-4T Model Rocket Engine Bulk Pack
1/2A3-4T Engine Bulk Pack Unboxed
001788 - 1/2A3-4T Engine Bulk Pack-2700
001503 - 1/2A3-2T Engines-2474
Model Rocket Thrust Curve Example
Estes Rockets

1/2A3-4T Engine Bulk Pack

SKU: 001788
$89.99
Sale

ENGINES FOR MODEL ROCKETS

Engine bulk packs come with all the model rocket engine supplies you need to launch 24 rockets. Included are 24 model rocket engines, 30 starters, 24 starter plugs and 75 squares of recovery wadding. Use the 1/2A3-4T engine to launch the Star Hopper bulk pack rockets.

PLEASE NOTE: You must have a physical address for delivery.

Overview 

Recommended Rockets

Specs

Reviews

Overview

Estes model rocket engine bulk packs are available in four total impulse ranges: 1/2A (mini engine), A, B or C (standard engines). These packs may be used for the rocket bulk packs or other Estes rockets. Whether you are launching rockets at school with students, at a youth group activity or rocket club monthly launch, Estes engine bulk packs are a must.

The Estes 1/2A3-4T might be made to fit smaller rockets, but it will pack a punch! This bulk pack supplies all the model rocket engine supplies you need to launch 24 rockets. The pack includes 24 model rocket engines, 30 starters, 24 starter plugs and 75 squares of recovery wadding.

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.

Overview

1/2A3-4T Engine Bulk Pack Unboxed

Compatible Rockets

Star Hopper Bulk Pack
Star Hopper™ Bulk Pack (12 PK)
$144.99
Star Hopper with Bag
Star Hopper™
$14.99
Gnome Bulk Pack
Gnome™ Bulk Pack (12 pk)
$79.99
Gnome with Bag
Gnome™
$10.99

Technical Specifications

Technical Specifications

  • Total Impulse

1.25 N-sec

  • Time Delay

4 Seconds

  • Max Lift Weight

1.0 oz (28 g)

  • Max Thrust

8.30 Newtons (1.9 lbs)

  • Thrust Duration

0.30 Seconds

  • Length

1.8 in. (4.6 cm)

  • Diameter

13 mm

  • Weight

.23 oz. (6.5 g)

  • Propellant Weight

0.07 oz (1.9 g)
1/2A3 Model Rocket Engine Thrust Curve Chart

Customer Reviews

Based on 1 review
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C
Charles Frick (Augusta, GA)
Great Engines for the sized

Used these engines for Estes Star Hopper. They were perfect with this rocket.

Estes-LP2-06

Live, Online Training and 1:1 Support

Estes Education has been a leader in STEM education for over 60 years. We know that STEM is a vital interdisciplinary topic that requires hands-on and inclusive learning. Explore these supporting materials to take learning to new heights!

Should you have need, you can meet with a member of Education team for FREE, 1:1 online support to learn rocketry basics, how to apply our curriculum, and discover unique teaching strategies. Our team is eager to answer your questions!
Get Support Now!

Learn About Model Rocket Safety!

Not sure how to safely launch a rocket with your group? Head over to our dedicated Safety instructions page for videos, support, and more!
How To Fly Safely
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