OT: Nitrogen filled tires

[Jim Yanik]

[email protected] (Don Klipstein) wrote in

Theft retaliation? Gets me going!...

How about this: 3-speed bike, which usually has hand caliper brakes
on
both wheels, but the rear brake can be a coaster brake instead.
Sturmey Archer made both coaster brake and non-coaster-brake versions
of their 3-speed internally geared rear hubs, mostly without the
coaster brake.

Make one with a coaster brake and both front and rear brake levers,
and
rear caliper brakes. Possibly not seen by unauthorized riders: The
rear brake cable does not actuate the rear caliper brake, but pulls
the pin out of the hand grenade under the seat.

Sounds a little too risky, dangerous and extreme to actually fly,
but I
don't think highly of thieves.

There are laws against booby traps.
They catch too many innocent people,often the owner,too.
and BATF-troop/LEOs are not fond of any sort of BOMBS.

Less extreme would be an unusual but actual brake setup, along with
fake
usual-type brakes that do nothing but maybe sound a burglar alarm.
Put a warning label on the handlebars: WARNING - ATYPICAL BRAKES -
UNAUTHORIZED RIDERS CAN CRASH! I'm sure some lawyers and maybe a few
laws can cause problems with even that...

Safer still would be a burglar alarm, though I'm afraid that in many
areas the thief would then only get a slap on the wrist.

They don't stop autos from being stolen,why would you believe it would work
for a bicycle? (my Integra had an alarm was was stolen Jun 29th of this
year,driven away with the alarm blaring. I couldn't get out there fast
enough to get a shot off. "gone in 60 seconds".)

Starting now
to think of a "dye grenade" to paint a thief some glary bright color,
like they boobytrap bank robbers with, but that may not be much of a
deterrent in some neighborhoods or social circles where it is socially
acceptable to be a thief.

Anyone think of any electronic solutions that won't get me jailed or
sued but cause a bike thief to become a former bike thief?

- Don Klipstein ([email protected])

Stun gun wired with a microswitch under the bike seat,or using wheel/motion
sensors;as the bike is ridden off,the stun gun is triggered and the thief
gets 50KV up his butt.(or triggered by the hand brake)

Maybe it would trigger his bowels..... B-)

 

[Richard Henry]

Stun gun wired with a microswitch under the bike seat,or using wheel/motion
sensors;as the bike is ridden off,the stun gun is triggered and the thief
gets 50KV up his butt.(or triggered by the hand brake)

And all the time I am riding I would be thinking of what faults might
set it off in error.

 

[Roger Hamlett]

And all the time I am riding I would be thinking of what faults might
set it off in error.

The nicest one, is the Booby trap that isn't.
If you have ever tried to ride a 'trick' bike, where the stearing is
reversed, you will know that this is almost impossible. However a few
hours of training, and suddenly you can do it fine. Have your bike made
this way, and a thief will fall off immediately. If somebody claims it is
'booby trapped', you can simply get on it, and ride it...

Best Wishes

 

[Paul Burke]

And all the time I am riding I would be thinking of what faults might
set it off in error.

Amusing case near here a few years ago. A bloke booby trapped his shed
with a sawn-off shotgun- then forgot he'd done it. Blew his own bollocks
off AND he went to jail.

 

[Rich Grise]

Interesting stuff:

http://en.wikipedia.org/wiki/Sf6

I like this part:

"Another effect is the gas' ability to alter vocal sound waves. The gas
can be breathed in a small, safe amount and cause the breather's voice to
sound very deep. This, too, is due to the gas density. Unlike helium,
which is much less dense than air, SF6 is approximately 5 times more
dense than air, and the velocity of sound through the gas is 0.44 times
the speed of sound in air. Unlike a gas such as helium, the speed of
sound in which is greater than the speed of sound in air, the result of
inhaling SF6 is the opposite of inhaling helium, a reduction in the
timbre (not pitch) of the voice.[5]

"Although inhaling SF6 can be a novel amusement, the practice can be
dangerous because, like all gases other than oxygen, the SF6 displaces
the oxygen needed for breathing (a phenomenon known as asphyxiation). A
myth exists that SF6 is too heavy for the lungs to expel unassisted, and
that after inhaling SF6, it is necessary to bend over completely at the
waist to allow the excess gas to "spill" out of the body. In fact, the
lungs mix gases very effectively and rapidly, such that SF6 would be
purged from the lungs within a breath or two.[6] In general, dense,
odourless gases in confined areas present the hazard of suffocation."

We used to do that with freon, before they declared freon deadly. ;-)

And I've heard that they can use SF6 in place of helium, or maybe in
a mixture, with O2 for deep dives, because it doesn't make you sound
like Donald Duck; it could make you sound like Isaac Hayes or Barry
White, but probably they mix in some helium and average it out.

Cheers!
Rich

 

[Rich Grise]

It wasn't, because it was my bicycle.

So, what was the benefit of using propane? Just the lower leakage
rate?

Thanks,
Rich

 

[Bob Myers]

I like this part:

[some deleted]

"Although inhaling SF6 can be a novel amusement, the practice can be
dangerous because, like all gases other than oxygen, the SF6 displaces
the oxygen needed for breathing (a phenomenon known as asphyxiation).

Yeah, that "a phenomenon known as asphyxiation" is an
especially nice bit of writing. It reads so much better than
"a phenomenon known as death."

And I've heard that they can use SF6 in place of helium, or maybe in
a mixture, with O2 for deep dives, because it doesn't make you sound
like Donald Duck; it could make you sound like Isaac Hayes or Barry
White, but probably they mix in some helium and average it out.

You should get a patent application in on that, Rich; the "Dial-A-Voice"
SCUBA regulator. Lets the diver choose any voice from
James Earl Jones to Alvin the Chipmunk...

Bob M.

 

[Jim Yanik]

Yet he was considering a BOMB?
I'm sure you could figure out a reliable method of disabling it for your
own use.

Amusing case near here a few years ago. A bloke booby trapped his shed
with a sawn-off shotgun- then forgot he'd done it. Blew his own
bollocks off AND he went to jail.

I'm surprised he lived to GO to jail. I've read of others who didn't.

Some bike riders just remove the entire front wheel or the bike seat and
take that with them. Few want to steal an incomplete bike.

 

[John Larkin]

So, what was the benefit of using propane? Just the lower leakage
rate?

That, and no pumping.

John

 

[ChairmanOfTheBored]

[email protected] (Don Klipstein) wrote in


There are laws against booby traps.
They catch too many innocent people,often the owner,too.
and BATF-troop/LEOs are not fond of any sort of BOMBS.

They don't stop autos from being stolen,why would you believe it would work
for a bicycle? (my Integra had an alarm was was stolen Jun 29th of this
year,driven away with the alarm blaring. I couldn't get out there fast
enough to get a shot off. "gone in 60 seconds".)


Stun gun wired with a microswitch under the bike seat,or using wheel/motion
sensors;as the bike is ridden off,the stun gun is triggered and the thief
gets 50KV up his butt.(or triggered by the hand brake)

Maybe it would trigger his bowels..... B-)

Shock box booby traps are also illegal.

I used to work for a video game distributor fixing the upright video
games and pinballs way back in my earlier years, and we had a problem
where the vaults in the trunks of the collectors' cars were being robbed.
I suggested a high voltage shock box, but it was rejected, and I was told
that in fact, the culprit cannot even be charged or accosted for breaking
into the car until they actually grab property and attempt to flee with
it.

I say bullshit. I think the fucking retarded looters in LA should have
been shot on sight, and I think that the fuckers robbing vaults should
get their asses nailed for a ten or fifteen year stretch without parole
as well.

If we'd build more jails and actually make these fucktards pay for
their crimes, perhaps criminal behavior wouldn't look quite so appealing
to the idiot kids in the world.

I say gun or knife or other deadly weapon crime = life, no ability to
ever set foot on free soil again.

robbery and burglary = 15 years with a hearing and possible parole after
7 IF the criminal has made adjustments... like schooling, not fucking
courtyard weight lifting programs.

I say get rid of all the activities like a gym, ball field, ball court,
rec room, day room TV, etc.

Give them one newspaper a week from the source of their choice and
that's it.

You commit a crime... You PAY with hard time!

Yes, it most certainly *would* deter the stupid bastards..

 

[ChairmanOfTheBored]

I like this part:

[some deleted]

"Although inhaling SF6 can be a novel amusement, the practice can be
dangerous because, like all gases other than oxygen, the SF6 displaces
the oxygen needed for breathing (a phenomenon known as asphyxiation).

Yeah, that "a phenomenon known as asphyxiation" is an
especially nice bit of writing. It reads so much better than
"a phenomenon known as death."

And I've heard that they can use SF6 in place of helium, or maybe in
a mixture, with O2 for deep dives, because it doesn't make you sound
like Donald Duck; it could make you sound like Isaac Hayes or Barry
White, but probably they mix in some helium and average it out.

You should get a patent application in on that, Rich; the "Dial-A-Voice"
SCUBA regulator. Lets the diver choose any voice from
James Earl Jones to Alvin the Chipmunk...

Bob M.

Sure... one could even sprinkle in some Nitrogen, and kill the user
without getting caught as it would appear as a normal "accident".

 

[Robert Latest]

A 30 Lb tank of R-12 is ALL liquid (save a bit of head space), and the
pressure reading is what is used to determine tank fill level by some in
the industry.

How is the pressure of a full tank different from that of an almost empty
tank that still has some liquid in it?

robert

 

[ChairmanOfTheBored]

How is the pressure of a full tank different from that of an almost empty
tank that still has some liquid in it?

robert

http://en.wikipedia.org/wiki/Level_sensor

 

[Robert Latest]

http://en.wikipedia.org/wiki/Level_sensor

So you're referring to the hydrostatic level sensor, which uses a
differential pressure measurement. I thought that your "pressure reading"
referred to the absolute pressure at the top pf the container, which is
independent of liquid fill level.

robert

 

[[email protected]]

Things seem pretty slow in SED today, so let's talk about "Hot Air". (Like
the kind in your tires.)

Every so often I read something like this:
http://fleetowner.com/news/topstory/fleet_nitrogren_beats_air/suggesting
Nitrogenis better than air for improved mileage, lower tire wear, reduced
Global Warming, etc....

The trick is you fill your tires withNitrogeninstead of compressed air.

Huh?! Air is 78% (or so)Nitrogenanyway. Is there anything to this, or
is this a classic signal-to-noise problem...??
Notice too that the article does not mention any service stations so
equipped...

When I was in the USAF, at one point I worked on the SR-71 Blackbirdhttp://www.google.com/search?hl=en&q=%22sr-71+blackbird%22

and they used drynitrogenin its tires. But the reason, they told me,
didn't have anything to do with gas mileage, it was so that when it
lands at about 300 MPH, the tires don't explode and burn. Hot rubber
and oxygen can get a little volatile.

But, for a car, the only difference I can think of would have to do
with condensation, and just using dry air should alleviate any risk
in that area.

IOW, if somebody's making a claim like that, and expecially[SIC] if
they're trying to sell you something (likenitrogen), then they're
just blowing smoke up your ears, so to speak.

Hope This Helps!
Rich

Here's and idea where you can convert the air in yoyr tires to almost
100% nitrogen yourself:

http://www.createthefuturecontest.com/pages/view/entriesdetail.html?entryID=383

 

[ChairmanOfTheBored]

Things seem pretty slow in SED today, so let's talk about "Hot Air". (Like
the kind in your tires.)

Every so often I read something like this:
http://fleetowner.com/news/topstory/fleet_nitrogren_beats_air/suggesting
Nitrogenis better than air for improved mileage, lower tire wear, reduced
Global Warming, etc....

The trick is you fill your tires withNitrogeninstead of compressed air.

Huh?! Air is 78% (or so)Nitrogenanyway. Is there anything to this, or
is this a classic signal-to-noise problem...??
Notice too that the article does not mention any service stations so
equipped...

When I was in the USAF, at one point I worked on the SR-71 Blackbirdhttp://www.google.com/search?hl=en&q=%22sr-71+blackbird%22

and they used drynitrogenin its tires. But the reason, they told me,
didn't have anything to do with gas mileage, it was so that when it
lands at about 300 MPH, the tires don't explode and burn. Hot rubber
and oxygen can get a little volatile.

But, for a car, the only difference I can think of would have to do
with condensation, and just using dry air should alleviate any risk
in that area.

IOW, if somebody's making a claim like that, and expecially[SIC] if
they're trying to sell you something (likenitrogen), then they're
just blowing smoke up your ears, so to speak.

Hope This Helps!
Rich

Here's and idea where you can convert the air in yoyr tires to almost
100% nitrogen yourself:

http://www.createthefuturecontest.com/pages/view/entriesdetail.html?entryID=383

Nice. Better to incorporate it into the compressor tank output, and
have a switch so the operator can select "Oxygen Free Stream" at runtime.


Or, even make it so that the Oxygen gets stripped out while the
compressor does its fill task into the surge tank.

 

[Robert Baer]

Things seem pretty slow in SED today, so let's talk about "Hot Air". (Like
the kind in your tires.)

Every so often I read something like this:
http://fleetowner.com/news/topstory/fleet_nitrogren_beats_air/suggesting
Nitrogenis better than air for improved mileage, lower tire wear, reduced
Global Warming, etc....

The trick is you fill your tires withNitrogeninstead of compressed air.

Huh?! Air is 78% (or so)Nitrogenanyway. Is there anything to this, or
is this a classic signal-to-noise problem...??
Notice too that the article does not mention any service stations so
equipped...

When I was in the USAF, at one point I worked on the SR-71 Blackbirdhttp://www.google.com/search?hl=en&q=%22sr-71+blackbird%22

and they used drynitrogenin its tires. But the reason, they told me,
didn't have anything to do with gas mileage, it was so that when it
lands at about 300 MPH, the tires don't explode and burn. Hot rubber
and oxygen can get a little volatile.

But, for a car, the only difference I can think of would have to do
with condensation, and just using dry air should alleviate any risk
in that area.

IOW, if somebody's making a claim like that, and expecially[SIC] if
they're trying to sell you something (likenitrogen), then they're
just blowing smoke up your ears, so to speak.

Hope This Helps!
Rich

Here's and idea where you can convert the air in yoyr tires to almost
100% nitrogen yourself:

http://www.createthefuturecontest.com/pages/view/entriesdetail.html?entryID=383

Better yet, use Helium!
It is the most thermally conductive gas, so it would keep the tires
cooler while driving - especially at high speeds.
"Slight" disadvantage is that it diffuses out and so has to be
replaced frequently...

 

[John Larkin]

On Fri, 21 Sep 2007 12:34:07 -0700, mpm wrote:

Things seem pretty slow in SED today, so let's talk about "Hot Air". (Like
the kind in your tires.)

Every so often I read something like this:
http://fleetowner.com/news/topstory/fleet_nitrogren_beats_air/suggesting
Nitrogenis better than air for improved mileage, lower tire wear, reduced
Global Warming, etc....

The trick is you fill your tires withNitrogeninstead of compressed air.

Huh?! Air is 78% (or so)Nitrogenanyway. Is there anything to this, or
is this a classic signal-to-noise problem...??
Notice too that the article does not mention any service stations so
equipped...

When I was in the USAF, at one point I worked on the SR-71 Blackbirdhttp://www.google.com/search?hl=en&q=%22sr-71+blackbird%22

and they used drynitrogenin its tires. But the reason, they told me,
didn't have anything to do with gas mileage, it was so that when it
lands at about 300 MPH, the tires don't explode and burn. Hot rubber
and oxygen can get a little volatile.

But, for a car, the only difference I can think of would have to do
with condensation, and just using dry air should alleviate any risk
in that area.

IOW, if somebody's making a claim like that, and expecially[SIC] if
they're trying to sell you something (likenitrogen), then they're
just blowing smoke up your ears, so to speak.

Hope This Helps!
Rich

Here's and idea where you can convert the air in yoyr tires to almost
100% nitrogen yourself:

http://www.createthefuturecontest.com/pages/view/entriesdetail.html?entryID=383

Better yet, use Helium!
It is the most thermally conductive gas, so it would keep the tires
cooler while driving - especially at high speeds.
"Slight" disadvantage is that it diffuses out and so has to be
replaced frequently...

What we need is a liquid, or a sublimating powder, that maintains a
constant vapor pressure for a long time, until it's all gone.

Or a small storage tank built into the wheel, filled to some absurd
pressure, or filled with a liquid like freon or CO2, with a regulator.
Such a tire wouldn't need air for its lifetime.

John

 

[Jim Yanik]

On Fri, 21 Sep 2007 12:34:07 -0700, mpm wrote:

Things seem pretty slow in SED today, so let's talk about "Hot
Air". (Like the kind in your tires.)

Every so often I read something like this:
http://fleetowner.com/news/topstory/fleet_nitrogren_beats_air/sugges
ting Nitrogenis better than air for improved mileage, lower tire
wear, reduced Global Warming, etc....

The trick is you fill your tires withNitrogeninstead of compressed
air.

Huh?! Air is 78% (or so)Nitrogenanyway. Is there anything to this,
or is this a classic signal-to-noise problem...??
Notice too that the article does not mention any service stations
so equipped...

When I was in the USAF, at one point I worked on the SR-71
Blackbirdhttp://www.google.com/search?hl=en&q=%22sr-71+blackbird%22

and they used drynitrogenin its tires. But the reason, they told me,
didn't have anything to do with gas mileage, it was so that when it
lands at about 300 MPH, the tires don't explode and burn. Hot rubber
and oxygen can get a little volatile.

But, for a car, the only difference I can think of would have to do
with condensation, and just using dry air should alleviate any risk
in that area.

IOW, if somebody's making a claim like that, and expecially[SIC] if
they're trying to sell you something (likenitrogen), then they're
just blowing smoke up your ears, so to speak.

Hope This Helps!
Rich


Here's and idea where you can convert the air in yoyr tires to
almost 100% nitrogen yourself:

http://www.createthefuturecontest.com/pages/view/entriesdetail.html?e
ntryID=383

Better yet, use Helium!
It is the most thermally conductive gas, so it would keep the tires
cooler while driving - especially at high speeds.
"Slight" disadvantage is that it diffuses out and so has to be
replaced frequently...

What we need is a liquid, or a sublimating powder, that maintains a
constant vapor pressure for a long time, until it's all gone.

Or a small storage tank built into the wheel, filled to some absurd
pressure, or filled with a liquid like freon or CO2, with a regulator.
Such a tire wouldn't need air for its lifetime.

John

why? you can get N2 for very low cost by using a membrane separator.
That's how many garages do it.
I Googled that one time to see how they get N2 for tire fills.
Somebody needs to make them for home compressors,at an affordable price.
I have my own portable compressor,runs off the car battery. ;-)

 

[Guy Macon]

Or a small storage tank built into the wheel, filled to some absurd
pressure, or filled with a liquid like freon or CO2, with a regulator.
Such a tire wouldn't need air for its lifetime.

I would buy one of those.

How about an eccentric weight driving a tiny pump and regulator,
so that the bumps on the road keep the tire pressurized?

Or build the pump into those spinner hubcaps. Make the overpriced
bling bling even more overpriced.