Head injuries in F1, and motor racing in general...
Posted 29 July 2009 - 15:51
Posted 29 July 2009 - 16:06
Hahaha - King Edwards or Maris Pipers?
BBC common taters
On that video showing a series of screen grabs at the start from the on-car camera it's amazing how clear it is to see given the speed, picture quality and the fact that the images have gone through so many media to end up on YouTube that way.
Posted 29 July 2009 - 21:06
OK so the average human male head and neck is 5500gms
So the difference between a head with a 'heavy helmet vs a head in a light helmet is 7500gms vs 6900 gms
Another way is to say that the 2kg helmet makes the combined weight 8.7% heavier than when in a 'light' helmet
Strikes me in the scheme of things that is not actually a huge difference, so there must be scope to add both penetration resistance as well as more internal energy absorption in to the 'light' helmet especially in view of the recent mandatory use of the Hans device..
Richard, remember that we are dealing with G forces of 50 or possibly even higher, in a sudden deceleration. In which case, a one kg difference in helmet weight adds up to 50kg, incidentally the weight of a standard cement powder sack...suddenly trying to jerk a human head out of its fastening structures. Believe me, that is a huge difference.
Posted 31 July 2009 - 19:15
Carbon fiber in itself is not a bad material to build helmets. An excessive amount of it can be, and this is where I believe the FIA standard to be wrong.
If indeed you need choosing between the FIA version of the helmet you are interested in (name withheld to protect the integrity of this forum), that is IMHO the best there is, and their Snell version, pick the Snell-certified lid.
Both the older design and the new one produce pretty much the same test results, the newer version allows for larger heads to fit better.
At the same time, please have these guys fitting you for a HANS as they have now many sizes and angles available depending on your physical being.
Edited by T54, 31 July 2009 - 19:16.
Posted 31 July 2009 - 19:40
Posted 31 July 2009 - 19:48
Posted 31 July 2009 - 21:13
Posted 31 July 2009 - 21:33
But, if the head protection is too stiff, which is not the same as strong, the deceleration of the skull and its contents will be greater. What is needed is progressive energy absorption. It's the same principle as crumple zones in a car.
No head protection can stop your brain moving about in your skull though...
Edited by D-Type, 31 July 2009 - 21:34.
Posted 22 August 2009 - 10:57