Article C3.14.5
Rear Drum Deflector
Technical Regulations
Article C3.14.5
Rear Drum Deflector
Chapter: C3
In Simple Terms
The rear drum deflector is a piece of bodywork on the car's rear that must fit within a specific shape boundary. It can have up to two separate sections when viewed from different angles, and any curved surfaces must have smooth, gentle curves (at least 50mm radius) rather than sharp bends.
- Rear drum deflector bodywork must stay within the defined RV-RWH-FDEF boundary zone
- Maximum of two sections allowed in any XW, YW, or ZW plane below ZW = −170
- All aerodynamic surfaces must use smooth curves with a minimum 50mm radius to prevent sharp concave bends
- These restrictions ensure standardized rear aerodynamic design across all F1 cars
Official FIA Text
Rear Drum Deflector Bodywork must lie within RV-RWH-FDEF, have up to two sections in any XW, YW and ZW-Plane below ZW = −170. Aerodynamic Surfaces must contain no concave radius less than 50mm.
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