[Land-speed] Hans Device and Safety

[Skip Higginbotham]

Joe,
Since you addressed this to me, you say not to fasten the helmet to 
the cage but in the same breath, you say the HANS device slides 
rearward. How does that happen and not restrain the helmet? Much like 
fastening it to the cage would. Upper helmet clearance is controlled 
by the 7 point harness which restricts upward body movement. Maybe 
fastening the helmet to the cage should only be done if a 7 point 
harness is used. What do you think?
Thank you for your comments......I learn more each time.
Skip



At 11:01 AM 9/6/2008, Joe Timney wrote:
>As a factory trained Hans dealer, I would strongly advise to not 
>attach the helmet to the cage. All of the restraint devises allow 
>the helmet to follow the body forward, the Hans devise slides 
>rearward over your shoulders as you move forward because of the belt stretch.
>
>I can send you the Hans CD showing what a 5 G hit looks like...it 
>shows just how far the belts stretch. I couldn't believe how violent it is!!!
>
>In the SFI testing, Hans scored the best...they have the patent 
>(soon to expire) on the anchor location. The R3 was next...they have 
>a lower mounting point.
>
>The seat belts stretch so far that you really need to add 2 inches 
>for upper helmet clearance to keep from injuring your neck from compression.
>
>I'll see if I can lift the video from the disc.
>Hope this helps.
>joe