### Americana Arm Lock
The Americana is a classic submission technique commonly used in Brazilian Jiu-Jitsu, often executed from dominant positions such as side control or mount.
#### Positions Most Commonly Used From:
- **Side Control**
- **Mount**
#### Step-by-Step Instructions:
##### From Side Control
1. **Establish Control**
- Secure side control over your opponent by pinning their shoulders and hips.
- Ensure their far-side arm is tucked under your body or controlled.
2. **Isolate the Near-side Arm**
- Shift your body to increase your weight on their chest and grab their far-side wrist with your top hand, maintaining a firm control.
- Use your elbow to pin their near-side arm (the one closer to you) to the ground; this is crucial to isolate the limb.
3. **Secure the Wrist-Control**
- Slide your other hand (from underneath their far-side arm) over to their wrist closest to you.
- Grab their wrist with a thumbless grip (gable grip) to prevent escape.
4. **Create a Figure Four Grip**
- Slide the controlling hand under their arm as you drive your own arm under, forming a 'U' shape.
- Lock your hand around your wrist, using a thumbless grip, forming a figure four with your arms.
5. **Finish the Submission**
- Keeping your elbow pinned to the mat, gently lift their elbow using your bicep while simultaneously sliding their wrist down towards their hip.
- This motion should create tension on their shoulder joint, leading to a tap if applied gradually.
##### From Mount
1. **Tight Control**
- Control your opponent's upper body, ensuring your knees are tight against their ribs.
- Position your chest over your opponent's head for increased pressure and control.
2. **Isolate the Arm**
- As your opponent pushes against your chest with an arm, use your opposite arm to push through and pin their wrist to the mat.
- Maintain pressure using your head to ensure they remain pinned.
3. **Achieve the Grip**
- Once the wrist is secured and flat, slide your free hand under their elbow.
- Secure your grip using the figure four, ensuring your opponent cannot retract their arm.
4. **Apply the Lock**
- Drive their wrist towards their hips while lifting their elbow.
- Ensure their shoulder is immobilized by maintaining downward pressure using your shoulder.
- Increase pressure gently until a tap is achieved.
#### Tips:
- **Control Over Speed**: The Americana relies on steady control rather than explosive speed.
- **Thumb-less Grip**: Using a grip without your thumb minimizes escape opportunities.
- **Focus on Joint Mechanics**: The torque should primarily affect the shoulder joint—avoid violent or jerking motions to ensure safety.
The Americana arm lock provides a versatile and effective submission option, especially when your opponent is more focused on defending different attacks, such as those to the neck or torso.