Re: For gear heads only
 

So, how much nitrogen is there in "air" compared to say oxygen?
I figger if they wanna call it a pneumatic valve operation, they
invented it, only nitpickers unwilling to admit they are wrong
disagree, and it still runs on a compressed gas normally found
in great quantities in air. Also strongly suspect it isn't
liquid nitrogen, nor does it look like a female figure with
big breasts.

Approximately 8/21/03 15:17, L.W.(ßill) ------ III uttered for posterity:

> Greg, the gas they are writing about is nitrogen and under two thousand
> five hundred pounds per square inch should be liquid, therefore
> hydraulic, no? And does nitrogen fit the definition below?
>
> Main Entry: pneu·mat·ic
> Pronunciation: nu-'ma-tik, nyu-
> Function: adjective
> Etymology: Latin pneumaticus, from Greek
> pneumatikos, from
> pneumat-, pneuma air, breath, spirit, from pnein to
> breathe -- more
> at SNEEZE
> Date: 1659
> 1 : of, relating to, or using gas (as air or wind):
> a : moved or worked
> by air pressure b (1) : adapted for holding or
> inflated with
> compressed air (2) : having air-filled cavities
> 2 : of or relating to the pneuma : SPIRITUAL
> 3 : having a well-proportioned feminine figure;
> especially : having a
> full bust
> - pneu·mat·i·cal·ly /-ti-k(&-)lE/ adverb
> - pneu·ma·tic·i·ty /"nü-m&-'ti-s&-tE, "nyü-/ noun
>
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> Gregg wrote:
>>
>> What is the definition of pneumatic and where does it enforce a
>> pressure range??
>>
>> Gregg

Re: For gear heads only
 

I was thinking stepper motor, but have never had an electric door lock
apart.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

"L.W.(ßill) ------ III" wrote:
>
> Hi Brian,
> Except door locks are operated by motors because the may reverse,
> pictured at: http://www.----------.com/doorlock.jpg The top one is the
> solenoid your thinking of that may only be used to release and eject
> passengers form the rear door of Chrysler mini vans.
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> Cherokee-LTD wrote:
> >
> > Ahhh, this explains why you have to order power locks "up" and power locks
> > "down" separately... solenoids work very well in 2 directions.
> >
> > -Brian

Re: For gear heads only
 

I was thinking stepper motor, but have never had an electric door lock
apart.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

"L.W.(ßill) ------ III" wrote:
>
> Hi Brian,
> Except door locks are operated by motors because the may reverse,
> pictured at: http://www.----------.com/doorlock.jpg The top one is the
> solenoid your thinking of that may only be used to release and eject
> passengers form the rear door of Chrysler mini vans.
> God Bless America, ßill O|||||||O
> mailto:--------------------
>
> Cherokee-LTD wrote:
> >
> > Ahhh, this explains why you have to order power locks "up" and power locks
> > "down" separately... solenoids work very well in 2 directions.
> >
> > -Brian

Re: For gear heads only
 

Nitrogen is not liquid at 2500 psi, Nitrogen must be refrigerated to
very low temps and stored in a dewers to be held as a liquid. I
beleive it fits the definition of Pneumatic fine, Nitrogen is inert
doesnt react badly with other substances.

Gregg


On Thu, 21 Aug 2003 15:31:16 -0700, Lon Stowell
<lon.stowell@comcast.net> wrote:

> So, how much nitrogen is there in "air" compared to say oxygen?
> I figger if they wanna call it a pneumatic valve operation, they
> invented it, only nitpickers unwilling to admit they are wrong
> disagree, and it still runs on a compressed gas normally found
> in great quantities in air. Also strongly suspect it isn't
> liquid nitrogen, nor does it look like a female figure with
> big breasts.
>
>Approximately 8/21/03 15:17, L.W.(ßill) ------ III uttered for posterity:
>
>> Greg, the gas they are writing about is nitrogen and under two thousand
>> five hundred pounds per square inch should be liquid, therefore
>> hydraulic, no? And does nitrogen fit the definition below?
>>
>> Main Entry: pneu·mat·ic
>> Pronunciation: nu-'ma-tik, nyu-
>> Function: adjective
>> Etymology: Latin pneumaticus, from Greek
>> pneumatikos, from
>> pneumat-, pneuma air, breath, spirit, from pnein to
>> breathe -- more
>> at SNEEZE
>> Date: 1659
>> 1 : of, relating to, or using gas (as air or wind):
>> a : moved or worked
>> by air pressure b (1) : adapted for holding or
>> inflated with
>> compressed air (2) : having air-filled cavities
>> 2 : of or relating to the pneuma : SPIRITUAL
>> 3 : having a well-proportioned feminine figure;
>> especially : having a
>> full bust
>> - pneu·mat·i·cal·ly /-ti-k(&-)lE/ adverb
>> - pneu·ma·tic·i·ty /"nü-m&-'ti-s&-tE, "nyü-/ noun
>>
>> God Bless America, ßill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>>
>> Gregg wrote:
>>>
>>> What is the definition of pneumatic and where does it enforce a
>>> pressure range??
>>>
>>> Gregg

Re: For gear heads only
 

Nitrogen is not liquid at 2500 psi, Nitrogen must be refrigerated to
very low temps and stored in a dewers to be held as a liquid. I
beleive it fits the definition of Pneumatic fine, Nitrogen is inert
doesnt react badly with other substances.

Gregg


On Thu, 21 Aug 2003 15:31:16 -0700, Lon Stowell
<lon.stowell@comcast.net> wrote:

> So, how much nitrogen is there in "air" compared to say oxygen?
> I figger if they wanna call it a pneumatic valve operation, they
> invented it, only nitpickers unwilling to admit they are wrong
> disagree, and it still runs on a compressed gas normally found
> in great quantities in air. Also strongly suspect it isn't
> liquid nitrogen, nor does it look like a female figure with
> big breasts.
>
>Approximately 8/21/03 15:17, L.W.(ßill) ------ III uttered for posterity:
>
>> Greg, the gas they are writing about is nitrogen and under two thousand
>> five hundred pounds per square inch should be liquid, therefore
>> hydraulic, no? And does nitrogen fit the definition below?
>>
>> Main Entry: pneu·mat·ic
>> Pronunciation: nu-'ma-tik, nyu-
>> Function: adjective
>> Etymology: Latin pneumaticus, from Greek
>> pneumatikos, from
>> pneumat-, pneuma air, breath, spirit, from pnein to
>> breathe -- more
>> at SNEEZE
>> Date: 1659
>> 1 : of, relating to, or using gas (as air or wind):
>> a : moved or worked
>> by air pressure b (1) : adapted for holding or
>> inflated with
>> compressed air (2) : having air-filled cavities
>> 2 : of or relating to the pneuma : SPIRITUAL
>> 3 : having a well-proportioned feminine figure;
>> especially : having a
>> full bust
>> - pneu·mat·i·cal·ly /-ti-k(&-)lE/ adverb
>> - pneu·ma·tic·i·ty /"nü-m&-'ti-s&-tE, "nyü-/ noun
>>
>> God Bless America, ßill O|||||||O
>> mailto:-------------------- http://www.----------.com/
>>
>> Gregg wrote:
>>>
>>> What is the definition of pneumatic and where does it enforce a
>>> pressure range??
>>>
>>> Gregg

Re: For gear heads only
 

Lon, as you see this technology is not new, it's been around since the
combustion engine. I even as a preteen thought of it on my drag racing
carrier that never got started due to the ARMY and marriage:
http://www.----------.com/dragster.jpg I once owned a Ducati back in the
fifties, I see now why they stopped winning. Anyway I regard it as in
the same category as the carburetor the oil companies bought, a
technology that will not work, it's only designed to take investors
money.
God Bless America, ßill O|||||||O
mailto:--------------------

Lon Stowell wrote:
>
> Ahh, you don't believe those clever germans and italians can
> do this, using an idea from the french Delage firm.
>
> The merest moment spent with the keyword desmodromic or
> even Mercedes 300SLR [actually W196R] or Ducati Desmodromic would have
> yielded pictures, articles, technical articles and such
> to fill in the gaps. They worked very nicely. At very high
> speed. Delage's worked, but not sophisticated enough
> to deal with heat. Mercedes solved it by realizing that
> the valves are in a system, not standalone, and used
> the engine itself to close the valve with a bit of
> slop in the system. Ducati uses a very very light
> spring that works only for the final few thousandths
> of an inch, which would resolve the low speed issues
> that the Mercedes W196 had...and still allows you to
> operate the entire valve train with minimal finger
> pressure.
>
> Enjoy, some have drawings, some have pictures. Some
> have engineering analysis.
>
> <http://www.desmodromics.co.nz/desmodromic.htm>
>
> <http://technografix.hypermart.net/desmodro.htm>
>
> <http://speedwaybikes.fortunecity.net/desmo.htm>
>
> <http://www.ntnoa.org/engine.htm>
>
> <http://www.alphalink.net.au/~petero/springs.html>
>
> <http://island.isy.vcu.edu/mthomas/desmodromics_101.html>
>
> <http://www.ducati.com/racing/corse_rts.jhtml>
>
> <http://diem1.ing.unibo.it/mechmach/rivola/pub26.html>
>
> <http://diem1.ing.unibo.it/mechmach/rivola/pub23.html>
>
> Approximately 8/21/03 12:39, L.W.(ßill) ------ III uttered for posterity:
>
> > Lon, you're going to have to supply a URL, Pushing a valve up and down
> > like on a connecting rod does not take into account temperature
> > expansion and contraction.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Lon Stowell wrote:
> >>
> >> The Mercedes 300 SLR had no springs whatever. The desmodromic
> >> valves worked with a cam to open and a cam to close. Ducati
> >> started using the same valves in the mid 80's. Actually surprised
> >> with a quick google how many other engines use/used it.

Re: For gear heads only
 

Lon, as you see this technology is not new, it's been around since the
combustion engine. I even as a preteen thought of it on my drag racing
carrier that never got started due to the ARMY and marriage:
http://www.----------.com/dragster.jpg I once owned a Ducati back in the
fifties, I see now why they stopped winning. Anyway I regard it as in
the same category as the carburetor the oil companies bought, a
technology that will not work, it's only designed to take investors
money.
God Bless America, ßill O|||||||O
mailto:--------------------

Lon Stowell wrote:
>
> Ahh, you don't believe those clever germans and italians can
> do this, using an idea from the french Delage firm.
>
> The merest moment spent with the keyword desmodromic or
> even Mercedes 300SLR [actually W196R] or Ducati Desmodromic would have
> yielded pictures, articles, technical articles and such
> to fill in the gaps. They worked very nicely. At very high
> speed. Delage's worked, but not sophisticated enough
> to deal with heat. Mercedes solved it by realizing that
> the valves are in a system, not standalone, and used
> the engine itself to close the valve with a bit of
> slop in the system. Ducati uses a very very light
> spring that works only for the final few thousandths
> of an inch, which would resolve the low speed issues
> that the Mercedes W196 had...and still allows you to
> operate the entire valve train with minimal finger
> pressure.
>
> Enjoy, some have drawings, some have pictures. Some
> have engineering analysis.
>
> <http://www.desmodromics.co.nz/desmodromic.htm>
>
> <http://technografix.hypermart.net/desmodro.htm>
>
> <http://speedwaybikes.fortunecity.net/desmo.htm>
>
> <http://www.ntnoa.org/engine.htm>
>
> <http://www.alphalink.net.au/~petero/springs.html>
>
> <http://island.isy.vcu.edu/mthomas/desmodromics_101.html>
>
> <http://www.ducati.com/racing/corse_rts.jhtml>
>
> <http://diem1.ing.unibo.it/mechmach/rivola/pub26.html>
>
> <http://diem1.ing.unibo.it/mechmach/rivola/pub23.html>
>
> Approximately 8/21/03 12:39, L.W.(ßill) ------ III uttered for posterity:
>
> > Lon, you're going to have to supply a URL, Pushing a valve up and down
> > like on a connecting rod does not take into account temperature
> > expansion and contraction.
> > God Bless America, ßill O|||||||O
> > mailto:-------------------- http://www.----------.com/
> >
> > Lon Stowell wrote:
> >>
> >> The Mercedes 300 SLR had no springs whatever. The desmodromic
> >> valves worked with a cam to open and a cam to close. Ducati
> >> started using the same valves in the mid 80's. Actually surprised
> >> with a quick google how many other engines use/used it.

Re: For gear heads only
 

Nitrogen I find is liquid at 60,000 pounds. Here I thought the
Doctor knew what he was talking about with his liquid Nitrogen
cauterizing lesions.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Gregg wrote:
>
> Nitrogen is not liquid at 2500 psi, Nitrogen must be refrigerated to
> very low temps and stored in a dewers to be held as a liquid. I
> beleive it fits the definition of Pneumatic fine, Nitrogen is inert
> doesnt react badly with other substances.
>
> Gregg

Re: For gear heads only
 

Nitrogen I find is liquid at 60,000 pounds. Here I thought the
Doctor knew what he was talking about with his liquid Nitrogen
cauterizing lesions.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Gregg wrote:
>
> Nitrogen is not liquid at 2500 psi, Nitrogen must be refrigerated to
> very low temps and stored in a dewers to be held as a liquid. I
> beleive it fits the definition of Pneumatic fine, Nitrogen is inert
> doesnt react badly with other substances.
>
> Gregg

Re: For gear heads only
 

L.W. (ßill) ------ III wrote:
> Nitrogen I find is liquid at 60,000 pounds. Here I thought the
> Doctor knew what he was talking about with his liquid Nitrogen
> cauterizing lesions.

http://www.physik.uni-augsburg.de/~ubws/nitrogen.html

--
DougW