1. はじめに
The Estes 1469 Tandem X Rocket Launch Set provides an engaging experience for model rocket enthusiasts. This set includes two distinct model rockets, the Amazon and the Crossfire ISX, along with a complete launch system. This manual details the assembly process, required materials, launch procedures, safety guidelines, and technical specifications to ensure a successful and safe rocketry experience.

Image 1.1: The Estes Tandem X Rocket Launch Set packaging, displaying both the Amazon and Crossfire ISX model rockets.
2. 安全情報
Model rocketry involves inherent risks. Adherence to safety guidelines is paramount for preventing accidents and ensuring a positive experience. Always follow the NAR (National Association of Rocketry) model rocket safety code during operation.
- Launch Site: Select a large, open area free of dry weeds, brown grass, or other flammable materials. Ensure sufficient clear space for rocket ascent and descent.
- 距離: カウントダウン中および打ち上げ中は、発射台から少なくとも 15 フィートの安全距離を保ってください。
- 成人の監督: 12 歳未満のユーザーには大人の監督をお勧めします。
- Pre-Launch Check: Always perform a thorough pre-launch check of the rocket and launch system.
- 点火: Only use the provided Electron Beam Controller for ignition. Insert the safety key only when ready to launch.
- 回復: Ensure the recovery system (parachute) is properly packed to allow for safe descent. Do not attempt to catch a falling rocket.
- エンジン: Use only Estes-approved model rocket engines. Never modify engines or use homemade propellants.
- 気象条件: Do not launch in high winds, near power lines, or in adverse weather conditions.
3. 含まれるもの
The Estes 1469 Tandem X Rocket Launch Set includes the following components:
- Amazon Rocket Kit (E2X - Easy to Assemble)
- Crossfire ISX Rocket Kit (Skill Level 1)
- Two Plastic Parachutes (one for each rocket)
- Porta-Pad II Launch Pad
- Electron Beam Launch Controller
- 取扱説明書

Image 3.1: All components included in the Estes Tandem X Launch Set, laid out for inspection.
4. 必要な材料(含まれていません)
To build and launch your rockets, you will need to acquire the following items separately:
- Estes Model Rocket Engines (specific types listed in Section 8)
- Starters (included with engines)
- リカバリーワッディング
- 4 high-quality 1.5-volt AA alkaline batteries (for Electron Beam Controller)
- はさみ
- 細かいサンドペーパー
- Carpenter's glue (e.g., white glue)
- Plastic cement (for plastic parts)
- ホビーナイフ
- マスキングテープ

Image 4.1: Visual representation of additional tools and supplies required for building and launching the rockets.

Image 4.2: Recovery wadding, essential for protecting the parachute from engine ejection charge heat.
5. 組み立て手順
Follow the detailed instructions provided in the included instruction guide for each rocket model. General steps are outlined below.
5.1. Amazon Rocket (E2X - Easy to Assemble)
The Amazon rocket is designed for quick and easy assembly, typically within an hour. It features pre-colored plastic parts and self-stick graphics, requiring no painting.
- Fin Assembly: Glue the pre-colored plastic fins to the body tube according to the alignment marks.
- Nose Cone & Parachute: Attach the recovery parachute to the nose cone and shock cord. Secure the shock cord to the body tube.
- デカール: Apply the self-stick decals to complete the rocket's appearance.
5.2. Crossfire ISX Rocket (Skill Level 1)
The Crossfire ISX is an intermediate-level kit that requires a bit more attention to detail, typically taking longer to assemble. It features laser-cut wood fins and self-stick decals.
- フィンの準備: Sand the laser-cut balsa fins smooth.
- Fin Attachment: Carefully glue the fins to the body tube, ensuring proper alignment for aerodynamic stability.
- Nose Cone & Parachute: Attach the recovery parachute to the nose cone and shock cord. Secure the shock cord to the body tube.
- 仕上げ: Apply self-stick decals. Painting is optional but can enhance the rocket's appearance.

Image 5.1: A collection of rocket parts, including body tubes, nose cones, fins, and recovery systems, ready for assembly.
6. Launch System Setup
The launch system consists of the Porta-Pad II Launch Pad and the Electron Beam Controller.
6.1. Porta-Pad II Launch Pad
- 脚を組み立てる: Attach the three legs to the central hub of the launch pad.
- Insert Launch Rod: Slide the launch rod through the guide tube on the launch pad. Ensure it is securely seated.
- Blast Deflector: Position the blast deflector plate at the base of the launch rod.
- 配置: Place the assembled launch pad on a flat, stable surface in your chosen launch area.

Image 6.1: The Estes Porta-Pad II Launch Pad, ready for rocket placement.
6.2. Electron Beam Controller
- バッテリーの取り付け: Open the battery compartment and insert 4 new 1.5-volt AA alkaline batteries, observing correct polarity. Close the compartment.
- リードを接続: Connect the controller's leads to the launch pad. The red clip attaches to the launch rod, and the black clip attaches to the igniter leads.
- 安全キー: Keep the safety key removed until immediately before launch.

Image 6.2: The Estes Electron Beam Launch Controller, used for safe remote ignition.
7. Operating Instructions (Launching)
Once your rocket is assembled and the launch system is set up, follow these steps for a safe launch:
- Prepare Rocket: Insert the chosen Estes engine into the rocket's engine mount. Secure the igniter into the engine nozzle.
- Insert Wadding: Gently insert recovery wadding into the body tube above the engine to protect the parachute.
- Pack Parachute: Carefully fold and pack the parachute into the body tube.
- Place Rocket on Pad: Slide the rocket onto the launch rod, ensuring it rests on the blast deflector.
- Connect Igniter: Attach the micro-clips from the Electron Beam Controller to the igniter leads. Ensure the clips do not touch each other or the metal engine casing.
- Move to Safety: Retreat to a safe distance (at least 15 feet) from the launch pad.
- 安全キーを挿入します: Insert the safety key into the Electron Beam Controller.
- 秒読み: Announce a clear countdown (e.g., "5, 4, 3, 2, 1, Launch!").
- 打ち上げ: Press and hold the launch button until the rocket ignites and lifts off.
- 回復: Observe the rocket's flight and parachute deployment. Recover the rocket after it lands.
8. エンジンの選択
Proper engine selection is crucial for optimal flight performance and safety. Refer to the table below for recommended engines for each rocket model.
| Rocket Model | Recommended Engines (First Flight) | Other Compatible Engines | 予測最大高度 |
|---|---|---|---|
| アマゾン | B4-2 (for first flight) | B4-4, B6-2, B6-4, C6-3, C6-5 | 600 ft (183 m) with C6-5 |
| Crossfire ISX | A8-3 (for first flight) | B4-4, B6-4, C6-5, C6-7 | 1,150 ft (351 m) with C6-7 |
注記: All Estes rocket engines are sold separately. The engine designation (e.g., C6-5) indicates thrust class, average thrust, and delay time before ejection charge.

Image 8.1: A summary of technical specifications, including engine recommendations and projected altitudes for both rockets.
9. Flight Sequence
Understanding the typical flight sequence of a model rocket helps in anticipating its behavior and ensuring safe recovery.
- Ignition & Thrust: The engine ignites, providing thrust that propels the rocket upwards.
- Powered Flight: The rocket accelerates rapidly, guided by the launch rod.
- Engine Burnout: The engine's propellant is consumed, and thrust ceases.
- Coast Phase: The rocket continues to ascend due to momentum, slowing down until it reaches its apogee (highest point).
- Ejection Charge: A small charge in the engine ignites, ejecting the nose cone and deploying the recovery parachute.
- 回復: The parachute slows the rocket's descent, allowing it to land safely for reuse.

Image 9.1: A visual guide to the standard flight sequence of a model rocket, from launch to recovery.
10. メンテナンス
Proper maintenance ensures the longevity and continued performance of your model rockets and launch system.
- クリーニング: After each launch, inspect rockets for any residue or damage. Clean the engine mount area.
- Parachute Inspection: Check parachutes for tears or tangles. Repair or replace as needed.
- Shock Cord: Inspect the shock cord for fraying or damage. Replace if compromised.
- 発射台: Keep the launch rod clean and free of debris. Ensure all launch pad components are secure.
- コントローラ: Remove batteries from the Electron Beam Controller when not in use to prevent corrosion. Store in a dry place.
- ストレージ: Store rockets in a cool, dry place away from direct sunlight and extreme temperatures.
11。 トラブルシューティング
以下に、一般的な問題とその潜在的な解決策をいくつか示します。
- ロケットの打ち上げ失敗:
- Check battery charge in the controller.
- Ensure igniter is properly seated in the engine and micro-clips are securely attached.
- Verify safety key is fully inserted.
- Inspect igniter for damage; replace if necessary.
- 不規則な飛行経路:
- Check fins for damage or improper alignment.
- Ensure launch rod is straight and rocket slides freely.
- Verify correct engine is used for the rocket model.
- Avoid launching in windy conditions.
- パラシュートが展開しない:
- Ensure recovery wadding was used and properly packed.
- Check for obstructions in the body tube.
- Verify engine's ejection charge delay is appropriate for the rocket's altitude.
- Rocket Lands Hard/Damaged:
- Parachute may not have deployed or was too small.
- Landing area may have been unsuitable (e.g., hard surface).
12. 仕様
Detailed specifications for the Amazon and Crossfire ISX model rockets:
| 特徴 | Amazon Rocket | Crossfire ISX Rocket |
|---|---|---|
| 長さ | 30インチ(74.7 cm) | 15.6インチ(39.6 cm) |
| 直径 | 1.33インチ(34 mm) | 0.98インチ(25 mm) |
| 重さ | 3オンス(85g) | 1.3オンス(37g) |
| スキルレベル | E2X (Easy to Assemble) | スキルレベル1 |
| フィン素材 | 成形プラスチック | Laser-cut Balsa Wood |
| 回復システム | 18 inch (45.7 cm) Parachute | 12 inch (30 cm) Parachute |
| 予測最大高度 | 600+ ft (183 m) | 1,150フィート(351メートル) |
13. サポートとお問い合わせ
For further assistance, questions, or to purchase additional components, please visit the official Estes webサイトにアクセスするか、カスタマー サポートにお問い合わせください。
Estes Industries
Webサイト: エステスロケット