Product Description
Estes 010028 D12-5 Model Rocket Engines (2pk) (EST010028)
The Estes D12-5 engine is a high-thrust motor built for model rockets that need strong liftoff power and a longer coast before deploying their recovery system. With a 5-second delay between engine burnout and ejection, it gives your rocket extra time to climb before the parachute or other recovery method activates—perfect for heavier rockets or those designed for extended flights.
This engine is a great match for a variety of Estes kits and custom builds that support D-engine power. Whether you're flying a single-stage rocket or the upper stage of a multi-stage setup, the D12-5 delivers reliable, consistent performance with every launch. The longer delay helps improve flight stability and timing, giving your rocket a smoother arc and more controlled descent.
Each package includes two D12-5 engines, two starters, and four starter plugs. You’ll have what you need to get your rocket ready for the next launch, with parts that fit easily into standard Estes engine mounts. Everything is packaged with care and built to meet Estes’ trusted quality standards.
Whether you’re moving up from smaller C engines or fine-tuning a more advanced rocket, the D12-5 is a solid, dependable choice. It offers the right mix of power and delay for rockets that need a little more time in the sky before coming back to Earth.
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.
Features: 
- The D12-5 is built for smooth, dependable launches every time.
- It’s ideal for heavier single- or multi-stage models requiring reliable power and timing.
- High-thrust motor with a 5-second delay
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)
Includes:
- (2) D12-5 Engines
- (2) Starters
- (4) Starter Plugs
