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Old Apr 7, 2006 | 04:35 PM
  #31  
sedbiker62's Avatar
sedbiker62
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From: Pekin, IN
Default RE: dropped helmet

I once heard that after a drop, no matter how insignifacant, the moleculer structure of the binding inner structure of the self depricating macro stress relief cells all relocate to the temperal lobe area of the cephalic structure, thus creating in essence a kinetic mass force proportional to and equivalent of a Coleoptera Scarabaeidae (June bug) traveling at warp 6 @ -42 Kelvin and hitting you square in the lip. It is a known medical factoid that your temperal lobe would not withstand this impact upon the second such dropping of your brain bucket. Particularly with your head in it. Just my opinion.

Steve[sm=icon_rock.gif]
 
Old Apr 7, 2006 | 05:27 PM
  #32  
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ladyglide
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From: Palmer Alaska
Default RE: dropped helmet

replaced or at least inspected by the manufacturer. The trainers at our MSF told us a 3' drop is enough to damage the outer shell. Enough to make it unsafe in a crash, where you don't want your helmet to "fail". IMHO
 
Old Apr 7, 2006 | 05:46 PM
  #33  
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topchop
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Default RE: dropped helmet

ORIGINAL: sedbiker62

I once heard that after a drop, no matter how insignifacant, the moleculer structure of the binding inner structure of the self depricating macro stress relief cells all relocate to the temperal lobe area of the cephalic structure, thus creating in essence a kinetic mass force proportional to and equivalent of a Coleoptera Scarabaeidae (June bug) traveling at warp 6 @ -42 Kelvin and hitting you square in the lip. It is a known medical factoid that your temperal lobe would not withstand this impact upon the second such dropping of your brain bucket. Particularly with your head in it. Just my opinion.

Steve[sm=icon_rock.gif]
I agree but remain concerned with the cepahlic structure tension. If one were to apply the acherman principle to the binding structure and thus inhibit surface tension within the particulates before impact, all crashes or perils could be avoided entirely? I would suggest replacing your helmet every time you ride with a new "fresh" helmet to avoid particulate deprication of the outer bindings resulting from wind and sun exposure.
 
Old Apr 7, 2006 | 06:27 PM
  #34  
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snipit
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From: From the Burgh to the turd of N.E. OH
Default RE: dropped helmet

The instructions with my new helmet said any drop of more than 4' the helmet should be replaced
 
Old Apr 7, 2006 | 06:33 PM
  #35  
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Jip
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Default RE: dropped helmet

helmet instructions?

1. place on head
2. ...

sorry man, just sounds funny to me
 
Old Apr 7, 2006 | 06:36 PM
  #36  
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alazlo
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Default RE: dropped helmet

I gotta go with Stucarius. Will the helmet provide less protection if it's been dropped once or twice? Maybe, but not likely. Will the helmet continue to provide some degree of protection after its been dropped a couple of times? Absofreakinlutely.... I wear a half helmet that is 10 years old & I'm sure it would be better than no helmet at all.
 
Old Apr 7, 2006 | 06:38 PM
  #37  
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snipit
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From: From the Burgh to the turd of N.E. OH
Default RE: dropped helmet

Yeah I know but I read "Everything"
 
Old Apr 7, 2006 | 06:39 PM
  #38  
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alazlo
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Default RE: dropped helmet


ORIGINAL: topchop I agree but remain concerned with the cepahlic structure tension. If one were to apply the acherman principle to the binding structure and thus inhibit surface tension within the particulates before impact, all crashes or perils could be avoided entirely?
Sorry but this is a little to copious for my diminutive comprehension!!!!!!
 
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Old Apr 7, 2006 | 07:07 PM
  #39  
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Default RE: dropped helmet

Stucarius,
I would prefer to keep my mouth shut here, but I won't because these forums are for the purpose of sharing information that should be helpful to each other.

Your comments about spinal injuries and helmet wear are absolutely wrong and belong in the category of "urban myth." Please share exactly where you got the information you are repeating, because it is incorrect and as a result, potentially dangerous. There is not one study I am aware of in credible literature that looks closely at injuries and how they happen that supports your assertion. Not one. What Rhubarb said in response is correct. Dale Ehrnhardt would have internally decapitated himself in his crash even if he wasn't wearing a helmet. But, as pointed out, being a restrained driver is different than being a motorcyclist.

Further, helmets do more than just prevent fractures. They help (but do not eliminate) modify the rate of deceleration of the skull AND more widely distribute a force that is applied in an impact, often turning a focal force to the skull to a global force around the skull. Very often the result is the difference between the rider having a concussion or brain injury (without a skull fracture, I might add) vs. getting up and walking away without even a headache.

You are correct about full face helmets preventing facial injuries. And 75% of crashes that result in helmet strikes have strikes in the facial area. MANY crashes do not result in a helmet strike at all, but the ones that do........

How do I know this stuff?
I am one of the surgical specialists that riders who crash and get taken to the ER get to see. I study this stuff all the time, not only because it is my surgical specialty, but because I ride...and I ride a lot.

I am not saying you shouldn't wear a skid lid if you want to, BUT I would prefer that you do it with the correct information in hand. If you wear one because you find them more comfortable and better looking, no problem. But PLEASE do not profess that they are safer because they absolutely are NOT.

Finally, the problem with reading things and going "Gee, that makes sense.........." is that sometimes it appears to. But that doesn't mean it plays out that way in reality when all perspectives are applied. Let's look at the riders who ride the fastest and crash the most: motorcycle roadracers (Nicky Hayden, and all the MotoGP boys). Have you ever heard of a single one of them, EVER crashing and having a cervical spinal cord injury? No. Wayne Rainey had an odd spinal fracture yers ago that was low and left him as a parapalegic. There was an AMA racer Vincent Haskovec last year who had a spinal fracture because he ran into a barrier. These were not helmet related. Shikano crashed last year at over 200 mph, rolled and tumbled and hit his full face Arai helmet several times before stopping. No spinal injuries, no concussion. He had an ankle injury if I recall correctly.

No urban myths, please.

Ride how you like, enjoy and remain crash free, y'all.

Bones
 
Old Apr 7, 2006 | 07:25 PM
  #40  
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vernh59
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Default RE: dropped helmet

Stucarius,
I would prefer to keep my mouth shut here, but I won't because these forums are for the purpose of sharing information that should be helpful to each other.

Your comments about spinal injuries and helmet wear are absolutely wrong and belong in the category of "urban myth." Please share exactly where you got the information you are repeating, because it is incorrect and as a result, potentially dangerous. There is not one study I am aware of in credible literature that looks closely at injuries and how they happen that supports your assertion. Not one. What Rhubarb said in response is correct. Dale Ehrnhardt would have internally decapitated himself in his crash even if he wasn't wearing a helmet. But, as pointed out, being a restrained driver is different than being a motorcyclist.

Further, helmets do more than just prevent fractures. They help (but do not eliminate) modify the rate of deceleration of the skull AND more widely distribute a force that is applied in an impact, often turning a focal force to the skull to a global force around the skull. Very often the result is the difference between the rider having a concussion or brain injury (without a skull fracture, I might add) vs. getting up and walking away without even a headache.

You are correct about full face helmets preventing facial injuries. And 75% of crashes that result in helmet strikes have strikes in the facial area. MANY crashes do not result in a helmet strike at all, but the ones that do........

How do I know this stuff?
I am one of the surgical specialists that riders who crash and get taken to the ER get to see. I study this stuff all the time, not only because it is my surgical specialty, but because I ride...and I ride a lot.

I am not saying you shouldn't wear a skid lid if you want to, BUT I would prefer that you do it with the correct information in hand. If you wear one because you find them more comfortable and better looking, no problem. But PLEASE do not profess that they are safer because they absolutely are NOT.

Finally, the problem with reading things and going "Gee, that makes sense.........." is that sometimes it appears to. But that doesn't mean it plays out that way in reality when all perspectives are applied. Let's look at the riders who ride the fastest and crash the most: motorcycle roadracers (Nicky Hayden, and all the MotoGP boys). Have you ever heard of a single one of them, EVER crashing and having a cervical spinal cord injury? No. Wayne Rainey had an odd spinal fracture yers ago that was low and left him as a parapalegic. There was an AMA racer Vincent Haskovec last year who had a spinal fracture because he ran into a barrier. These were not helmet related. Shikano crashed last year at over 200 mph, rolled and tumbled and hit his full face Arai helmet several times before stopping. No spinal injuries, no concussion. He had an ankle injury if I recall correctly.

No urban myths, please.

Ride how you like, enjoy and remain crash free, y'all.

Bones
[sm=hail.gif][sm=jawdrop.gif]
 



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