C6-5 ENGINES

• Grades: 4–12+
• Number of Students: 1–30
• Number of Lessons: NA
• Hours of Content: NA
  

Highlights:

Bagged:

The Estes C6‑5 is a single-stage 18 mm engine designed for rockets under 4 oz. Offering 10 N‑s impulse, 15.3 N thrust, and a 5‑second delay, it delivers stable, mid-power flights. Each pack includes three engines, four igniters, and four plugs.

Bulk:

Take your launches higher with the Estes C6-5 Engine Bulk Pack, the most powerful option available in a bulk pack. Perfect for school launches, clubs, and group activities, these engines deliver big altitude and excitement with every flight.

Curriculum or Lesson Topics:

Bagged:

The Estes C6‑5 engine is a single-stage, 18 mm standard engine crafted for rockets weighing less than 4 oz (113 g) including the motor. Perfect for mid-sized beginner and intermediate rockets, it offers a powerful yet controlled flight experience. Each pack includes three C6‑5 engines, four igniters, and four starter plugs, making it easy to launch multiple rockets with minimal prep.

This engine delivers a total impulse of 10 N‑s, a sustained average thrust of 15.3 N (3.4 lb), and a burn duration of approximately 1.6 seconds—ideal for achieving moderate altitude lift-offs. With a 5‑second delay between burnout and ejection, it gives rockets ample time to coast to apogee for smooth recovery system deployment.

Measuring 2.8″ long and 18 mm in diameter, the C6‑5 fits a wide range of Estes rockets like Antar™, Big Bertha®, AstroCam®, and Alpha III®. Weighing just 0.85 oz (24.1 g) with 0.43 oz (12.2 g) of propellant, this engine balances power and precision, delivering consistent flight trajectories every time.

Backed by Estes’ legacy of quality and reliability, the C6‑5 is a go-to for educational programs, hobbyist launches, and model rocket enthusiasts seeking dependable mid-power performance. It ensures repeatable, safe, and exciting flights for a wide spectrum of flying environments.

Bulk:

The Estes C6-5 Engine Bulk Pack is the ultimate choice for rocketeers who want maximum altitude and excitement from their launches. As the highest impulse engine available in a bulk pack, the C6-5 gives students, hobbyists, and youth groups the chance to see their rockets soar higher than ever before. With reliable performance and powerful thrust, this engine makes every launch an unforgettable experience.

Perfect for classrooms, rocket clubs, and large group activities, the C6-5 engine is designed for rockets weighing under 4 ounces. Its balanced combination of strong lift and a 5-second delay ensures smooth flights and dependable parachute deployments. This makes it an excellent engine for demonstrations and educational launches where consistency and excitement are key.

Estes engine bulk packs are built with convenience in mind, giving you all the supplies you need to keep your launches running smoothly. Instead of worrying about running out of engines or parts, this bulk pack equips you with everything required for 24 complete launches. It’s a simple and cost-effective way to support larger groups of rocketeers.

With the Estes C6-5 Engine Bulk Pack, you’ll have the power, reliability, and quantity to inspire your students or group with thrilling flights. Watch rockets roar off the pad, climb high into the sky, and return safely thanks to Estes’ trusted engineering. When you want your launches to impress, the C6-5 delivers.

What’s Included:

Bagged:

Perfect for models like Antar™, Big Bertha®, AstroCam®, and Alpha III®, the C6‑5 provides reliable performance for educational, hobbyist, and small‑field launches.

Includes:

3 × C6-5 Engines

4 × Starters

4 × Starter Plugs

Bulk:

Designed for rockets under 4 ounces, the C6-5 is a dependable engine that lets your fleet soar to impressive heights. Whether it’s for the classroom, a youth group, or a rocket club, this bulk pack ensures you have the supplies needed for multiple successful launches.

Includes:

24 × C6-5 Engines

30 × Starters

24 × Starter Plugs

75 × Squares of Recovery Wadding

Technology Requirements/Specifications:

Review the full specifications for the C6-5 Engines, including impulse, thrust duration, delay, and physical dimensions.

Special Notes and Considerations:

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

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.