Estes Tri-Flyer STEM Kit – Build, Experiment & Launch
Explore the science of rocketry with the Estes Tri-Flyer STEM Kit. Designed for beginners, this hands-on kit lets you build and launch a real model rocket while experimenting with different flight configurations using interchangeable fin designs.
Key Features
- Complete beginner rocket launch kit
- Includes 3 interchangeable fin sets for different flight characteristics
- Launch rockets up to 900 ft (274 m)
- Includes launch pad and controller
- Comes with 2 rocket engines for multiple launches
- Includes STEM activity guide for hands-on learning
- Reusable system for repeated experiments and launches
What’s Included
- 1 × Tri-Flyer rocket kit
- 3 × interchangeable fin cans
- 2 × B6-4 rocket engines
- Starters and plugs
- Recovery wadding
- Porta-Pad II launch pad
- Electron Beam launch controller
- STEM activity booklet
- Enough supplies for multiple launches

Specifications
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Skill Level: Beginner
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Max Altitude: 900 ft (274 m)
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Length: 24.6 – 25.1 in (62.5 – 63.7 cm)
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Diameter: 0.98 in (25 mm)
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Weight: 1.95 – 2.45 oz (55 – 69 g)
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Recovery System: 12 in parachute
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Launch System: Porta-Pad II
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Recommended Engines: B6-4, B6-2, B4-4, C5-3, C6-3
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Fin Material: Molded plastic

Applications
- STEM education and classroom activities
- Hands-on physics and engineering experiments
- Beginner rocketry learning
- Outdoor family activities
Important Notes
- Recommended for ages 10+ (adult supervision required)
- Tools required for assembly (not included): glue, scissors, hobby knife
- Batteries required for controller (not included)