Estes D12-5 Model Rocket Engine Bulk Pack
D12-5 Engine Bulk Pack Contents
Estes D12-5 Model Rocket Engine
D12 Model Rocket Engine Thrust Curve Chart
Model Rocket Thrust Curve Example

D12-5 Engine Bulk Pack

SKU: 001786
$64.99
Sale Sold out

The D12-5 Engine Bulk Pack delivers dependable D-class power for hobby rocketeers who want higher, punchier flights without sacrificing predictability. These 24 mm D12-5 motors are built for rockets that need a strong boost and a clean, consistent performance—perfect for weekend backyard launches, club meets, and small-group launch events.

What makes the D12-5 a favorite is its steady, confident thrust and predictable 5-second delay that gives your recovery system plenty of time to do its job. That consistent delay and reliable ignition let you focus on the fun of flying—longer, higher flights and repeatable results—so every launch feels like progress rather than a gamble. Ideal for intermediate rocketeers stepping up from A/B motors or for families and clubs who want dependable, exciting flights every time.

Includes
- 12 D12-5 Engines
- 20 Starters
- 16 Starter Plugs
- 144 Sheets of Recovery Wadding

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

Overview

The D12-5 Engine Bulk Pack is built for rocketeers who want reliable D-impulse performance in a convenient, launch-ready format. These motors are a great match for medium-weight kits and two-stage rockets that need a stronger lift-off and a predictable coast-to-recovery profile. Use them when you want added altitude and a confident, repeatable flight every time you head to the field.

Beyond raw power, the D12-5 shines because of its consistency. Each motor produces a clean, steady burn that reduces variability between flights, so you’ll see similar altitudes and flight behavior across launches. That predictability makes the D12-5 particularly useful for learning how changes in payload, fin design, or recovery systems affect performance—valuable whether you’re teaching beginners, running a club launch, or flying with the family.

Performance highlights include a total impulse of 20.00 N·s, a 5 second time delay, a maximum lift weight of about 10.0 oz (283 g), and a peak thrust of 32.90 N with a thrust duration around 1.60 seconds. These specs make the D12-5 powerful enough for rockets such as Green Eggs, Big Daddy, and Odyssey while remaining predictable and easy to manage at the launch site. The 24 mm diameter and compact form factor mean wide compatibility with many popular Estes kits and aftermarket mounts.

Ready to step up your flights? The D12-5 Engine Bulk Pack gives you the power and consistency to learn, experiment, and enjoy more successful launches. As always, follow the included safety and handling instructions, use the recommended recovery gear, and launch in a safe, legal area. Order your pack today and get more of the high-altitude, reliable flights that keep people coming back to the pad.

ATTENTION: Estes Industries, LLC requires all purchasers and users of Estes® Model Rocket Engines to adhere strictly to all applicable local, state, and federal laws, regulations, and safety standards. The user assumes all responsibility for the safe and lawful use of Estes® products. Estes Industries, LLC expressly disclaims any and all liability for personal injury, property damage, or other loss resulting from the misuse, improper handling, or unauthorized application of its model rocket engines.

Estes D12-5 Model Rocket Engine

Launch Learning Further with
Estes Education

Teachers, STEM clubs, Boy or Girl Scout leaders, and summer camp programs can apply for an Estes Education account at edu.estesrockets.com to receive a 20% Educator Discount and applicable tax exemptions, and access to 40+ FREE standards-aligned lesson and unit plans.

Bring the excitement of rocketry to your classroom, troop, or camp for less!

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Compatible Rockets

Technical Specifications

Technical Specifications

  • Total Impulse

20.00 N-Sec
  • Time Delay

5 Seconds
  • Max Lift Weight

10.0 oz (283 g)
  • Max Thrust

32.90 Newtons (7.4 lbs)
  • Thrust Duration

1.60 Seconds
  • Length

2.75 in. (7 cm)
  • Diameter

24 mm
  • Weight

1.61 oz. (45.6 g)
  • Propellant Weight

0.85 oz (24.2 g)
D12 Model Rocket Engine Thrust Curve Chart

Customer Reviews

Based on 4 reviews
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D
Don Etheredge (Clifton, TX)
Always a Great engine choice for models that recommend a D motor

Always a Great engine choice for models that recommend a D motor. Wonderful price too for a bulk deal..Estes is a company that is dedicated to service and quality goods

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Larry Waldman (Missoula, MT)
M
Mr. D (West Milton, OH)
Good Bulk Pack

Your basic bulk engine pack. Comes with all the items needed for another successful D12-5 launch.