Aerodynamics; D-Force Spoiler; Aeroacoustics - SCHUBERTH SR1 Manual

C. THE HELMET

6. AERODYNAMICS

All SCHUBERTH motorcycle and motor racing helmets are developed
and optimised in SCHUBERTH's own wind tunnel under precisely
defi ned conditions. The SR1 is specially designed for a sporty
sitting position and sits calmly in the airstream. Even at high
speeds (above 200 km/h) the SR1 generates practically no lift. Other
characteristics of the SR1 are low air resistance, high directional
stability and low side forces. On motorcycles without fairing,
buffeting* is also signifi cantly reduced at high speeds.
* Juddering of the body in the airstream
Note: Please be aware that on motorcycles with fairing,
the strong air turbulence that can be caused by the fairing
can substantially alter the aerodynamic characteristics of a
helmet.

7. D-FORCE SPOILER

By using the D-Force spoiler the SR1 can be adjusted to a given
sitting position and a given speed to ensure optimal helmet
performance in the airstream. Two positions with different angles
of attack are available.
Down position, close to helmet:
Standard downthrust. Recommended for
motorcycles with fairing and an upright
sitting position.
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Hinged up: 60% higher downthrust.
Recommended for motorcycles without
fairing and a low sitting position.

8. AEROACOUSTICS

SCHUBERTH has developed a number of measures in the wind
tunnel to ensure a pleasantly quiet helmet that also provides
optimal acoustic feedback while riding. This enables you to
concentrate when riding, particularly at higher speeds.
Note: The aeroacoustic values achieved may vary with the
motorcycle type, fairing, sitting position and body size.
Warning: As a result of the optimised aeroacoustics of the
helmet (and thus low level of wind noise in the helmet) it is
easy to underestimate your real speed. Do not rely on your
hearing to estimate your speed, check the reading on your
speedometer.
Note: Strong air turbulence occurs at the edges of the
wind shadow created by motorcycles with fairings. This may
signifi cantly reduce the aeroacoustic performance of the
helmet. The fairing should be adjusted so that the outgoing
turbulence layer does not come into contact with the
underside of the helmet.
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