HANS Question

#41

"A. Jones" <ajones (AT) intrtek (DOT) com> wrote

Quote:

I've considered all that and believe a head harness could be tuned to
sync with the body during each given degree and direction of impact.

I'm not saying the HANS is a bad device, or entirely bogus. It's just
that I think Vandar brought up a good question. The question is why
not, and I'm not satisfied with anything I've seen so far.

the answer is simple... you want your body all connected to the same part of
the car, that way if the car is coming apart it doesn't take body parts with
it. same if there is a belt failure.... the seatbelt is not attatched to the
seat, therefore why on God's green earth would you want your noggin strapped
to the seat?

#42

"armpit" <armarmpitpit (AT) yahoo (DOT) com> wrote

Quote:

"Chad" <cbstun (AT) safemail (DOT) com> wrote in message
news:4ada77e8 (AT) news (DOT) x-privat.org...

It would be nice if it was cheaper than HANS, which seems to be your
chief argument for the idea, but you can ignore that too if you wish.

Now, will you continue to criticise me or are you up for the challenge?

http://www.nyxracing.com/team-tech-horse-collar-helmet-support-p-13151.html

What do I win?

that won't even compare... it's designed to absorb shock and stabilize the
wearers helmet, not keep their head and neck from separating in an
accident...

#43

Joey Tribiani wrote:

Quote:

"armpit" <armarmpitpit (AT) yahoo (DOT) com> wrote in message
news:Rc-dnS1BWq7q40fXnZ2dnUVZ_qCdnZ2d (AT) giganews (DOT) com...
"Chad" <cbstun (AT) safemail (DOT) com> wrote in message
news:4ada77e8 (AT) news (DOT) x-privat.org...
It would be nice if it was cheaper than HANS, which seems to be your
chief argument for the idea, but you can ignore that too if you wish.

Now, will you continue to criticise me or are you up for the challenge?

http://www.nyxracing.com/team-tech-horse-collar-helmet-support-p-13151.html

What do I win?

that won't even compare... it's designed to absorb shock and stabilize the
wearers helmet, not keep their head and neck from separating in an
accident...

He was being sarcastic.

#44

"TS02_05champ" <tonystewart02_05champ (AT) yahoo (DOT) com> wrote

Quote:

http://www.nyxracing.com/team-tech-horse-collar-helmet-support-p-13151.html

What do I win?

that won't even compare... it's designed to absorb shock and stabilize
the wearers helmet, not keep their head and neck from separating in an
accident...

He was being sarcastic.

I was hoping....<G>

#45

Joey Tribiani wrote:

Quote:

"A. Jones" <ajones (AT) intrtek (DOT) com> wrote in message
news:bpkkd5ltsafd7ol9i9tb84qu5766i4so4g (AT) 4ax (DOT) com...
I've considered all that and believe a head harness could be tuned to
sync with the body during each given degree and direction of impact.

I'm not saying the HANS is a bad device, or entirely bogus. It's just
that I think Vandar brought up a good question. The question is why
not, and I'm not satisfied with anything I've seen so far.

the answer is simple... you want your body all connected to the same part of
the car, that way if the car is coming apart it doesn't take body parts with
it. same if there is a belt failure.... the seatbelt is not attatched to the
seat, therefore why on God's green earth would you want your noggin strapped
to the seat?

I don't care who ya are, that's funny right there.

#46

"Chad" <cbstun (AT) safemail (DOT) com> wrote in news:4ada5182$1 (AT) news (DOT) x-privat.org:

Quote:

I don't know how far a drivers body does move forward compared to the
seat, but I'd guess anything more than an inch or two suddenly, at
8gs, would be enough to really hurt something in there.

The belts are designed to stretch a fair bit. That allows the
driver's body to decelerate at a slower rate than the seat (which
obviously decelerates at the same rate as the car, to which it
is rigidly attached).

John

#47

A. Jones <ajones (AT) intrtek (DOT) com> wrote in
news:bpkkd5ltsafd7ol9i9tb84qu5766i4so4g (AT) 4ax (DOT) com:

Quote:

I'm not saying the HANS is a bad device, or entirely bogus. It's just
that I think Vandar brought up a good question. The question is why
not, and I'm not satisfied with anything I've seen so far. Should that
make me a bad person or someone to revile and insult?

Given that you've been given the correct answer, and that that
answer is fairly obvious with little thought, then yes, I'd say
your lack of satisfaction is cause to revile you.

John

#48

John McCoy wrote:

Quote:

Vandar <vandar69 (AT) yahoo (DOT) com> wrote in
news:hbcv1v$lvl$2 (AT) news (DOT) albasani.net:

TS02_05champ wrote:

Because it wraps over the shoulders. If the shoulders can't move
(because of the belts), the HANS shouldn't move either.

It doesn't wrap over the shoulders. It just sits on the top, and
down the front of the chest. There's no part of the HANS which
extends down the back.

I'll amend it to say it wraps over the front of the shoulders. I know
what I meant, in spite of what I said.

Quote:

Yeah it may "work" w/o being secured *under* the belts, but then it's
no better than wearing a "donut".

I've often wondered why they can't just have the helmet straps
attached to the seat.

Because the driver's body is not attached to the seat. In a hard
impact, the belts can stretch enough for the driver's chest to
hit the steering wheel. The driver's neck won't stretch that far,
which it would have to do if the head & helmet were attached to
the seat.

Would it be feasible to have the head restraint straps attached to the
same portion of roll bar as the shoulder belts? As long as they are made
of a material similar or identical in elasticity to the belts and they
are attached to the same portion of the car as the belts, would that not
work?

#49

"Chad" <cbstun (AT) safemail (DOT) com> wrote in news:4ada6a5b (AT) news (DOT) x-privat.org:

Quote:

I'd be very very surprised if ease of getting in and out the car
quickly wasn't one of the primary design requirements.

It definately was (both for the HANS and for the Hutchens
device). You may recall that when the HANS was first bought
in the two big complaints from drivers like Stewart was that
it was uncomfortable and that it made it more difficult to
get out of the car in a hurry; the Hutchens device was designed
to address both of those complaints, and the HANS was modified.
Of course, the better solution was implemented in the CoT, by
making the window opening larger.

Note that the original HANS was designed around the F1/F3
cockpit, so the egress requirements were rather different than
for full body cars.

John

#50

"Chad" <cbstun (AT) safemail (DOT) com> wrote in news:4ada77e8 (AT) news (DOT) x-privat.org:

Quote:

"I've considered all that [how HANS works] and believe a head harness
could be tuned to sync with the body during each given degree and
direction of impact."

Feel free to make up technology or imaginary materials if you feel you
need to, I'd really like to see you come up with an idea for a
workable design to do this. But I'm sure you can't.

Do you have any guess what Alan was thinking of when he wrote that
sentence? I mean, he started by saying that he didn't understand
why a head restraint couldn't be attached to the seat. Does that
quoted sentence say he believes he could design a restraint that
attaches to the seat? Or just that he beleives he could design a
"tuned" restraint?

Part of the problem of having a discussion with Alan is that, like
a politician, he's a master of producing sentences which have a
lot of reasonable sounding words, but don't actually say anything.

John