1/2A3-4T Engines Bulk


UPC: 047776017887
Part Number: EST1788
In Stock: Yes In Stock Jan 23, 2020 at 1:16 AM
Price: $69.99
Only Available In Store

This is an Estes Educator model rocket engine (1/2A3-4T) bulk pack.
Suitable for ages 10 & older. adult supervision for those under 12.
By Law: You must be at least age 14 to purchase in California & New Jersey.

  • Bulk packs are convenient and include everything your students will need to prepare their rockets for flights
  • Enough stuff for approximately 25 launches
  • Igniter plugs are reusable
  • Rocketry permits students a unique avenue to become active participants in the powerful process of science discovery in much the same way as great experimenters of the past did
  • Model rocket engine and igniter instructions included
  • Estes full one year warranty

(24) Single Stage Regular Engines
(30) Model Rocket Igniters
(24) Igniter Plugs
(75) 4-1/2" (114mm) Squares of Recovery Wadding


Estes Launch System
Estes Model Rocket(s)


Engine: 1/2A3-4T
Max.Total Impulse (Newton-Seconds): 1.250
Thrust Duration (Seconds): 0.3
Propellant Weight: 1.75g
Minimum Site Dimension: 50 feet


WARNING: Flammable. Read instructions before use.
Soak in water to destroy.
Keep out of reach of small children.
Certified by the NAR (National Association of Rocketry).
Use only with Estes products.