The Estes E12-4 is a powerful 24mm engine designed for reliable model rocket flights. With 30.00 N-sec of total impulse and a 4-second delay, it provides a strong, balanced boost for mid-size rockets while ensuring smooth, realistic flight sequences.
Perfect for rockets up to 17 ounces, the E12-4 delivers both power and precision for single stage and upper stage flights. A dependable choice for hobbyists who want excitement, altitude, and consistent performance in every launch.
Includes:
- 2 E12-4 Engines
- 2 Starters
- 4 Starter Plugs
ATTENTION:These engines cannot be sent to post office boxes. Please be sure to provide a PHYSICAL ADDRESS when purchasing E and F sized engines.
E and F sized engines cannot be shipped to Alaska, Hawaii, Puerto Rico or Guam.
Technical Specifications
Total Impulse 30.00 N-sec
Time Delay 4 Seconds
Max Lift Weight 17.0 oz (482 g)
Max Thrust 30.60 Newtons (6.9 lbs)
Thrust Duration 2.70 Seconds
Length 3.8 in. (9.7 cm)
Diameter 24 mm
Weight 2.16 oz. (61.2 g)
Propellant Weight 1.3 oz (36.9 g)
Please Note: Photos may not be of the same packaging, but nothing will be sold older than what is received from our distributor.
ModelRocketGuy.com will only ship this item by US Postal Service.
