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Fit and other Instructions
HANS SIZE - comfort is the deciding factor for those between sizes.
Exceptions - some drivers with highly developed muscles may require one size
larger than their neck size would otherwise indicate.
The angle of the driver's seat back must match the angle of the HANS Device.
Examples below indicate the correct fitment for each angle of device.
Model 10 - Extreme Upright
Rare Application fits some Sprint Cars, Midgets.
EXCEPTION: May fit drivers with a thin chest, who would otherwise fit a Model
Model 20 - Upright
Fits all Sedans, sports cars, Midgets, late models, Modifieds, etc., such as
NASCAR, Corvette, Porsche, Viper, Miata, Honda and similar.
Model 30 - Semi Reclined
Fits many single seat vehicles, such as Formula Ford, Formula Mazda, F2000,
SR-1, SR-2 Spec Racer Ford and similar.
EXCEPTION: May fit drivers with a barrel chest, who would otherwise use a Model
Model 40 - Fully Reclined
Rare application, fit some vintage Formula cars and Formula 1 vehicles.
*Measure seat back before ordering to ensure correct fit.
In a crash without a HANS®,
the shoulder harness and seat, restrain the driver's torso, but only the neck
restrains the head and helmet.
device reduces the whipping action of the head and keeps the driver's head from
being pulled away from their upper body. With a HANS®,
forces stretching the neck in a frontal collision are reduced by
80%. In a frontal crash, the tethers restrain the head with forces that directly
counteract the head's forward movement while the torso and HANS®
are restrained by the shoulder harness. By restraining the head to
move with the torso in a crash, the head motions and forces in the neck are
dramatically reduced. In a crash test without a HANS®, head
accelerations, neck loads are largest due to swinging motion of the head.
Many chassis do not feature properly located shoulder harness
mount locations to begin with. These should be corrected for proper harness performance,
regardless of whether or not a HANS® device
is being used.
SFI Specification 38.1
Head and Neck Restraint Systems
The SFI Foundation, has established
Specification 38.1 "Head and Neck Restraint Systems", as a partner to
their other standards for specialty/performance automotive and racing equipment.
Conformance with this new specification, requires demonstrations that
equipment, like the HANS® Device, meets or
exceeds performance standards established by experts in driver safety.
Devices are tested both when a manufacture, like HANS®
Performance Products, enters the program, and on a periodic basis
thereafter. All testing is conducted by an independent laboratory, is
authenticated by a state registered professional Engineer, and is observed by an
SFI official. In a test, devices are fitted to a crash dummy in a dynamic crash
sled configured to replicate a racecar environment.
The crash dummy is restrained by a Nylon SFI Specification, 16.1, six-point
driver restraint system provided by SFI. A minimum of two frontal crash tests
and one 30° right frontal crash test are conducted. Each test represents a
43.5mph (70 kph) crash. For a device to "pass" the first time, the
dummy's neck tension and compression, must be less than 720 lbf (3,200 N) is all
tests. Any result over 900 lbf (4,000 N) is considered an outright failure. Once
SFI's performance and other requirements are met, a manufacturer may advertise,
promote and offer a Head and Heck Restraint System for sale, with the
representation that their product meets SFI Specification 38.1.
Peer Group Acclaim
success has not come overnight. Downing and Hubbard have spent more than 25 years on the development of their HANS®
technology as a commitment to help keep high-performance motorized sports
participants from injury and save lives. Their success and commitment has been
recognized by many professional and sporting organizations worldwide.
Stop by our Michigan location for personal assistance with
your HANS Device.