Acid Slide
Acid Slide (Class C)
Rotational slide for momentum redirection – demands edge-angle precision and core tension control. The bridge from basic stops to advanced friction maneuvers.
Classification & Prerequisites
Non-Negotiable Prerequisites
1. Power Slide (D) Mastery:
- 3m controlled slide @ 12km/h
- Recovery time <0.4s
2. Core Certification:
- 60s plank with 3kg back load
- Rotary stability test: 6/6 reps
Technical Execution
Rotation Cycle (0.8s/rev)
1. Entry & Edge Lock
- Approach: 10-12 km/h at 30° lean
- Edge Initiation: Aggressive inside edge → wheels break traction
Kinetic Rationale: Glute medius pre-activation stabilizes the hip → prevents lateral drift
2. Rotation Phase
- Upper Body: Arms in "helicopter guard" (shoulders 90° abduction)
- Lower Body: Knees bent 110° → constant edge angle modulation
Kinetic Rationale: Oblique fascia stores/releases elastic energy → sustains rotation
3. Exit Protocol
- Weight Shift: 70% → forward foot → snap to Eagle/Volt
- Critical Angle: Release edge at 15° lean → prevent spinout
Kinetic Rationale: Eccentric quad loading absorbs residual rotational energy
Gear Optimization
Physics & Safety
Mastery Metrics
Coaching Progressions
1. Static Rotation Drills:
- Pivot on one wheel → develop edge sensitivity
2. Speed-Gated Rotations:
- 8 km/h (2 rotations) → 10 km/h (3 rotations)
3. Exit Precision Training:
- Acid Slide → Volt → Nelson chain
Competition Utility (WSSF)
Pro Tip
> "Spin like a helicopter, land like a heron" – maintain constant 25° lean through abdominal vacuum. Elite skaters achieve 5 rotations by modulating edge angle ±1° per revolution.
Safety Protocol
- Mandatory Gear: Lumbar support + slide gloves
- Surface Ban: Avoid μ<0.7 surfaces (unpredictable breakaway)
- Vestibular Prehab: Barany chair training 2x/week