Chin bars on helmets are likewise not a testing problem for the rolloff test. Numerous people objected to having the rolloff standard balloted separately from F-1446, and noted that putting it back into 1446 would also eliminate the language about motorized sport helmets. Downhill Racing Standard Sundahl has designed his pendulum but has not built one yet. There was discussion of whether or not face and eye protection is needed, since some downhill racers are wearing full face helmets designed for motorcycles. But they need full vision, better hearing to track what their tires are doing and probably lighter weight than motorcycles.
Hearing is useful because there is no motor noise to drown out what the tires are doing.
Ice Sprint Racing Injuries in this sport are primarily from concussions after contact with ice or the boards, and skate blade injuries from the unique blade used in this sport. Miscellaneous Velocity tolerances will be specified as plus or minus 3 percent in all .53 standards.