Airbag helmet

On Friday, May 26, 2017 at 2:05:47 PM UTC-7, jbeattie wrote:
On Friday, May 26, 2017 at 7:52:25 AM UTC-7, Frank Krygowski wrote:
On 5/26/2017 9:49 AM, wrote:
On Friday, May 26, 2017 at 5:44:07 AM UTC-7, Emanuel Berg wrote:
Discovery Channel's Daily Planet had an item on
this yesterday:
https://www.youtube.com/watch?v=mzoakbBxm5g

I saw those first time 1-2 years ago. The ad
say they are much safer than ordinary helmets.

Last year I had 3 crashes. One was a minor fall-over on a trail. Another was a end-for-end flip on a steep downhill and the third was that road bike ride into a stone wall at 25 mph or so. None of these would be considered "serious" though they sure felt like it at the time. Aside from minor bruises and scratches there was no real damage save to my ego.

Yow. Tom, maybe you should take things a bit easier.

I'm averaging one mild to moderate on-road crash every 18 years. I'm
due for my next one about nine years from now, but I plan to be careful
enough to postpone that.

TK definitely needs to reduce his frequency, particularly when it comes to hitting stone walls at 25mph. As one gets older, it's harder to shake-off that sort of thing. "It's just a flesh wound!" https://www.youtube.com/watch?v=AAW6D21ICdg

-- Jay Beattie.

If you can't do a 360 degree head over heals and walk away from it you sure much be a sissy. I had a could of cut fingers and was pretty angry that I had don't that with a "famous" "wonderdul" disk brake. OK, it was only 270 degrees. But I didn't cry once.

On Friday, May 26, 2017 at 2:05:47 PM UTC-7, jbeattie wrote:
On Friday, May 26, 2017 at 7:52:25 AM UTC-7, Frank Krygowski wrote:
On 5/26/2017 9:49 AM, wrote:
On Friday, May 26, 2017 at 5:44:07 AM UTC-7, Emanuel Berg wrote:
Discovery Channel's Daily Planet had an item on
this yesterday:
https://www.youtube.com/watch?v=mzoakbBxm5g

I saw those first time 1-2 years ago. The ad
say they are much safer than ordinary helmets.

Last year I had 3 crashes. One was a minor fall-over on a trail. Another was a end-for-end flip on a steep downhill and the third was that road bike ride into a stone wall at 25 mph or so. None of these would be considered "serious" though they sure felt like it at the time. Aside from minor bruises and scratches there was no real damage save to my ego.

Yow. Tom, maybe you should take things a bit easier.

I'm averaging one mild to moderate on-road crash every 18 years. I'm
due for my next one about nine years from now, but I plan to be careful
enough to postpone that.

TK definitely needs to reduce his frequency, particularly when it comes to hitting stone walls at 25mph. As one gets older, it's harder to shake-off that sort of thing. "It's just a flesh wound!" https://www.youtube.com/watch?v=AAW6D21ICdg

-- Jay Beattie.

If you can't do a 360 degree endover and walk away from it you sure must be a sissy. But I was pretty angry that it was because of those FABULOUS new hydraulic disk brakes. OK, it was only 270 degrees. But I didn't cry.

On Friday, May 26, 2017 at 3:40:06 PM UTC-7, wrote:
On Friday, May 26, 2017 at 2:05:47 PM UTC-7, jbeattie wrote:
On Friday, May 26, 2017 at 7:52:25 AM UTC-7, Frank Krygowski wrote:
On 5/26/2017 9:49 AM, wrote:
On Friday, May 26, 2017 at 5:44:07 AM UTC-7, Emanuel Berg wrote:
Discovery Channel's Daily Planet had an item on
this yesterday:
https://www.youtube.com/watch?v=mzoakbBxm5g

I saw those first time 1-2 years ago. The ad
say they are much safer than ordinary helmets.

Last year I had 3 crashes. One was a minor fall-over on a trail. Another was a end-for-end flip on a steep downhill and the third was that road bike ride into a stone wall at 25 mph or so. None of these would be considered "serious" though they sure felt like it at the time. Aside from minor bruises and scratches there was no real damage save to my ego.

Yow. Tom, maybe you should take things a bit easier.

I'm averaging one mild to moderate on-road crash every 18 years. I'm
due for my next one about nine years from now, but I plan to be careful
enough to postpone that.

TK definitely needs to reduce his frequency, particularly when it comes to hitting stone walls at 25mph. As one gets older, it's harder to shake-off that sort of thing. "It's just a flesh wound!" https://www.youtube.com/watch?v=AAW6D21ICdg

-- Jay Beattie.

If you can't do a 360 degree endover and walk away from it you sure must be a sissy. But I was pretty angry that it was because of those FABULOUS new hydraulic disk brakes. OK, it was only 270 degrees. But I didn't cry.

I did a cartwheel in October and rode away from it -- and then got surgery to repair my hand and ended up in the ER with a bleed in my psoas. Double-tap with a broken hand hurts like hell, and the rest of my body didn't feel much better. Thanks to the people at the Rock Garden Tavern who gave me a bag of ice. http://thebarlowroad.com/Images/carv...n_09-19-15.jpg I'll never say bad things about your crazy, p-u truck driving patrons again, or at least for a while.

I must say, though, getting up off the pavement was hard, and I had to sit for quite a while to get over the feeling that I was going to puke. It's harder pulling it together after a body slam in my old age. No concussion, but I did trash my helmet. It saved my life, and the lives of my entire family. It died for Frank's sins. Amen.

-- Jay Beattie.

On Friday, May 26, 2017 at 6:40:06 PM UTC-4, wrote:
Snipped
If you can't do a 360 degree endover and walk away from it you sure must be a sissy. But I was pretty angry that it was because of those FABULOUS new hydraulic disk brakes. OK, it was only 270 degrees. But I didn't cry.

It takes a LOT of skill to do a 360 deree endover. After all 360 degrees mean you land back on the wheels in an upright position. Sort of like this at about the 3:05 point in this video:
https://www.youtube.com/watch?v=Z19zFlPah-o

Cheers

On Fri, 26 May 2017 13:00:33 -0700 (PDT), Doug Landau
wrote:

On Friday, May 26, 2017 at 10:35:02 AM UTC-7, Jeff Liebermann wrote:
On Fri, 26 May 2017 08:27:17 +0700, John B.
wrote:

Very much a matter of not seeing the forest for the trees.

I live in an overgrown forest. I use a quad copter to see the forest.

The new "Body Bag", an all encompassing inflatable covering for the
bicyclist which automatically inflates in the event of an accident
will provide the cyclists with "all over" protection.

I'm sorry, but you're too late. It's already on the market:
https://www.google.com/search?q=inflatable+crash+ball&tbm=isch

Not too late - these things are not standardized yet, and there are varying
types, and the bugs have not all been worked out yet:
https://www.youtube.com/watch?v=J5OVptEFSNo

The problem with a Zorbing ball is that it lacks the arm and leg holes
needed to ride a bicycles. Let's rewind this thread and take another
look at the crash balls:
https://www.google.com/search?q=inflatable+crash+ball&tbm=isch
Notice how the legs and hands project outside the bubble. It would be
easy enough to position the holes so as to allow riding a bicycle.
Should the need arrive, just pressurize and launch over the
handlebars. Or, maybe a large ejection spring under the saddle and
inside the seat tube:
https://www.youtube.com/watch?v=t3Q4xWzW-nk
Parachute is optional. The rider has merely to retract arms, legs,
and head before bouncing down the roadway, over traffic, and across
rivers.

If an inflatable ball can safely bounce land the Mars rovers Spirit
and Opportunity, it can also bounce land a bicycle rider.
https://www.youtube.com/watch?v=KyktvC7w7Js
(Starts at 0:44)

One problem I can predict is the difficulty obtaining sufficient gases
to inflate the crash ball. To go from deflated to 1 atm pressure, it
would need twice the volume of the sphere. For a 4ft dia ball, that
would be about 33 cubic ft of gas. I couldn't find any reasonable
numbers for the expansion ratio of gunpowder and other explosives, but
offhand, I would guess that the amount needed to inflate the ball
would be about the same as what it would take to put send the wearer
home in an ambulance. Maybe something that burns a bit slower.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

On Fri, 26 May 2017 17:33:54 -0700, Jeff Liebermann
wrote:

For a 4ft dia ball, that
would be about 33 cubic ft of gas.

Oops. That should be 66 cubic ft of gas.

--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558

On Fri, 26 May 2017 10:35:01 -0700, Jeff Liebermann
wrote:

On Fri, 26 May 2017 08:27:17 +0700, John B.
wrote:

Very much a matter of not seeing the forest for the trees.

I live in an overgrown forest. I use a quad copter to see the forest.

The new "Body Bag", an all encompassing inflatable covering for the
bicyclist which automatically inflates in the event of an accident
will provide the cyclists with "all over" protection.

I'm sorry, but you're too late. It's already on the market:
https://www.google.com/search?q=inflatable+crash+ball&tbm=isch

Nope. Too fragile and doesn't seem to protect the legs. Bicyclists are
tough guys.

You might also consider a marine survival suit as a wearable air bag:
https://www.google.com/search?q=inflatable+immersion+suit&tbm=isch
https://archive.hnsa.org/doc/oberon/escape/img/fig014.jpg

The A.F. has something similar back in the Korean war era. The flight
crews used to stuff a handkerchief in the neck piece as it chaffed
their necks on a 12 hour mission. I once asked one of the gunners why
he wore it if it was uncomfortable and he said that they told him that
it would prolong consciousness in arctic waters by 3 - 5 minutes :-)


Perhaps a more "armored" defense system would be better:
http://802.11junk.com/jeffl/pics/bicycles/oddities/slides/bricks.html

Nope. You got to walk if you want to carry bri9cks :-)

with an option for an "organic" cushion:
http://802.11junk.com/jeffl/pics/bicycles/oddities/slides/bush.html

Grass compacts when you hot a wall :-)

or just improvise something from available components:
http://802.11junk.com/jeffl/pics/bicycles/oddities/slides/helmet.html

But the "Body Bag" is a multi purpose sort of thing. Protects you in
all kinds of situations.
http://tinyurl.com/y8ylscwp

--
Cheers,

John B.

On Fri, 26 May 2017 17:33:54 -0700, Jeff Liebermann
wrote:

On Fri, 26 May 2017 13:00:33 -0700 (PDT), Doug Landau
wrote:

On Friday, May 26, 2017 at 10:35:02 AM UTC-7, Jeff Liebermann wrote:
On Fri, 26 May 2017 08:27:17 +0700, John B.
wrote:

Very much a matter of not seeing the forest for the trees.

I live in an overgrown forest. I use a quad copter to see the forest.

The new "Body Bag", an all encompassing inflatable covering for the
bicyclist which automatically inflates in the event of an accident
will provide the cyclists with "all over" protection.

I'm sorry, but you're too late. It's already on the market:
https://www.google.com/search?q=inflatable+crash+ball&tbm=isch

Not too late - these things are not standardized yet, and there are varying
types, and the bugs have not all been worked out yet:
https://www.youtube.com/watch?v=J5OVptEFSNo

The problem with a Zorbing ball is that it lacks the arm and leg holes
needed to ride a bicycles. Let's rewind this thread and take another
look at the crash balls:
https://www.google.com/search?q=inflatable+crash+ball&tbm=isch
Notice how the legs and hands project outside the bubble. It would be
easy enough to position the holes so as to allow riding a bicycle.
Should the need arrive, just pressurize and launch over the
handlebars. Or, maybe a large ejection spring under the saddle and
inside the seat tube:
https://www.youtube.com/watch?v=t3Q4xWzW-nk
Parachute is optional. The rider has merely to retract arms, legs,
and head before bouncing down the roadway, over traffic, and across
rivers.

If an inflatable ball can safely bounce land the Mars rovers Spirit
and Opportunity, it can also bounce land a bicycle rider.
https://www.youtube.com/watch?v=KyktvC7w7Js
(Starts at 0:44)

One problem I can predict is the difficulty obtaining sufficient gases
to inflate the crash ball. To go from deflated to 1 atm pressure, it
would need twice the volume of the sphere. For a 4ft dia ball, that
would be about 33 cubic ft of gas. I couldn't find any reasonable
numbers for the expansion ratio of gunpowder and other explosives, but
offhand, I would guess that the amount needed to inflate the ball
would be about the same as what it would take to put send the wearer
home in an ambulance. Maybe something that burns a bit slower.

I suggest that rate of gas generation and time to fully inflate are
associated therefore, to have a micro second inflation rate gas
generation rate probably needs to be quite high.

But perhaps a system with a multi direction rocket sort of device
could be devised whereby at the slightest indication of a crash the
rocket launches you straight up and you float softly to earth with
your parachute


--
Cheers,

John B.

On Friday, May 26, 2017 at 4:55:11 PM UTC-7, jbeattie wrote:
On Friday, May 26, 2017 at 3:40:06 PM UTC-7, wrote:
On Friday, May 26, 2017 at 2:05:47 PM UTC-7, jbeattie wrote:
On Friday, May 26, 2017 at 7:52:25 AM UTC-7, Frank Krygowski wrote:
On 5/26/2017 9:49 AM, wrote:
On Friday, May 26, 2017 at 5:44:07 AM UTC-7, Emanuel Berg wrote:
Discovery Channel's Daily Planet had an item on
this yesterday:
https://www.youtube.com/watch?v=mzoakbBxm5g

I saw those first time 1-2 years ago. The ad
say they are much safer than ordinary helmets.

Last year I had 3 crashes. One was a minor fall-over on a trail. Another was a end-for-end flip on a steep downhill and the third was that road bike ride into a stone wall at 25 mph or so. None of these would be considered "serious" though they sure felt like it at the time. Aside from minor bruises and scratches there was no real damage save to my ego.

Yow. Tom, maybe you should take things a bit easier.

I'm averaging one mild to moderate on-road crash every 18 years. I'm
due for my next one about nine years from now, but I plan to be careful
enough to postpone that.

TK definitely needs to reduce his frequency, particularly when it comes to hitting stone walls at 25mph. As one gets older, it's harder to shake-off that sort of thing. "It's just a flesh wound!" https://www.youtube.com/watch?v=AAW6D21ICdg

-- Jay Beattie.

If you can't do a 360 degree endover and walk away from it you sure must be a sissy. But I was pretty angry that it was because of those FABULOUS new hydraulic disk brakes. OK, it was only 270 degrees. But I didn't cry.

I did a cartwheel in October and rode away from it -- and then got surgery to repair my hand and ended up in the ER with a bleed in my psoas. Double-tap with a broken hand hurts like hell, and the rest of my body didn't feel much better. Thanks to the people at the Rock Garden Tavern who gave me a bag of ice. http://thebarlowroad.com/Images/carv...n_09-19-15.jpg I'll never say bad things about your crazy, p-u truck driving patrons again, or at least for a while.

I must say, though, getting up off the pavement was hard, and I had to sit for quite a while to get over the feeling that I was going to puke. It's harder pulling it together after a body slam in my old age. No concussion, but I did trash my helmet. It saved my life, and the lives of my entire family. It died for Frank's sins. Amen.

I have a certain advantage over most people - my bones nor those of my brothers break. I suppose a bad enough accident would but I haven't met one except when I was in a fight and took a guy out by breaking his hand with mine.. And I only cracked the bones in a couple of fingers while all the bones in his hand were broken. If I hadn't miscalculated I wouldn't have cracked those two bones. That was from the overconfidence of being a fighter. Try to stop a guy without really hurting him and that's what you get.

On Friday, May 26, 2017 at 5:53:00 PM UTC-7, Jeff Liebermann wrote:
On Fri, 26 May 2017 17:33:54 -0700, Jeff Liebermann
wrote:

For a 4ft dia ball, that
would be about 33 cubic ft of gas.

Oops. That should be 66 cubic ft of gas.

Or one of my wife's attempts at cooking.