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Main
Date: 18 Jul 2007 15:14:30
From: John Forrest Tomlinson
Subject: hot pump barrel
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Well, I guess I jinxed myself by saying how rarely I use it - today I
got a flat tire and used a Zefal HPX pump. While pumping, I noticed
the pump barrel became quite hot.
Is that normal? Should I perhaps lubricate the washer inside to
reduce friction? If so, what should I use?
--
JT
****************************
Remove "remove" to reply
Visit http://www.jt10000.com
****************************
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Date: 19 Jul 2007 20:58:18
From: Leland Yee
Subject: Re: hot pump barrel
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On Jul 18, 3:14 pm, John Forrest Tomlinson <usenetrem...@jt10000.com >
wrote:
> Well, I guess I jinxed myself by saying how rarely I use it - today I
> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
> the pump barrel became quite hot.
>
> Is that normal? Should I perhaps lubricate the washer inside to
> reduce friction? If so, what should I use?
> --
> JT
>
Now you know how diesel engines get away with using no spark plugs.
Leland Yee
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Date: 19 Jul 2007 18:33:07
From: John Forrest Tomlinson
Subject: Re: hot pump barrel
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On Thu, 19 Jul 2007 20:58:18 -0000, Leland Yee <lyee4062@gmail.com >
wrote:
>On Jul 18, 3:14 pm, John Forrest Tomlinson <usenetrem...@jt10000.com>
>wrote:
>> Well, I guess I jinxed myself by saying how rarely I use it - today I
>> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
>> the pump barrel became quite hot.
>>
>> Is that normal? Should I perhaps lubricate the washer inside to
>> reduce friction? If so, what should I use?
>
>Now you know how diesel engines get away with using no spark plugs.
I didn't know diesel engines have no sparks plugs.
--
JT
****************************
Remove "remove" to reply
Visit http://www.jt10000.com
****************************
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Date: 19 Jul 2007 19:07:58
From: Johnny Sunset aka Tom Sherman
Subject: Re: hot pump barrel
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John Forrest Tomlinson wrote:
> On Thu, 19 Jul 2007 20:58:18 -0000, Leland Yee <lyee4062@gmail.com>
> wrote:
>
>> On Jul 18, 3:14 pm, John Forrest Tomlinson <usenetrem...@jt10000.com>
>> wrote:
>>> Well, I guess I jinxed myself by saying how rarely I use it - today I
>>> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
>>> the pump barrel became quite hot.
>>>
>>> Is that normal? Should I perhaps lubricate the washer inside to
>>> reduce friction? If so, what should I use?
>
>> Now you know how diesel engines get away with using no spark plugs.
>
> I didn't know diesel engines have no sparks plugs.
Rudolf Diesel obviously had a much better PR agent than Nikolaus Otto.
Almost everyone refers to the compression ignition engine as a "diesel",
while the four-stoke spark ignition engine is hardly ever called an "otto".
--
Tom Sherman - Holstein-Friesland Bovinia
The weather is here, wish you were beautiful
--
Posted via a free Usenet account from http://www.teranews.com
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Date: 19 Jul 2007 20:15:17
From: Nate Nagel
Subject: Re: hot pump barrel
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Johnny Sunset aka Tom Sherman wrote:
> John Forrest Tomlinson wrote:
>
>> On Thu, 19 Jul 2007 20:58:18 -0000, Leland Yee <lyee4062@gmail.com>
>> wrote:
>>
>>> On Jul 18, 3:14 pm, John Forrest Tomlinson <usenetrem...@jt10000.com>
>>> wrote:
>>>
>>>> Well, I guess I jinxed myself by saying how rarely I use it - today I
>>>> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
>>>> the pump barrel became quite hot.
>>>>
>>>> Is that normal? Should I perhaps lubricate the washer inside to
>>>> reduce friction? If so, what should I use?
>>
>>
>>> Now you know how diesel engines get away with using no spark plugs.
>>
>>
>> I didn't know diesel engines have no sparks plugs.
>
>
> Rudolf Diesel obviously had a much better PR agent than Nikolaus Otto.
> Almost everyone refers to the compression ignition engine as a "diesel",
> while the four-stoke spark ignition engine is hardly ever called an "otto".
>
Obviously you never sat through any (long, tedious) thermodynamics
classes. Now the poor bastard that invented the two-stroke is the one
who got the PR shaft (I don't even remember his name.)
nate
--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel
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Date: 19 Jul 2007 19:36:02
From: Johnny Sunset aka Tom Sherman
Subject: Re: hot pump barrel
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Nate Nagel wrote:
> Johnny Sunset aka Tom Sherman wrote:
>> John Forrest Tomlinson wrote:
>>
>>> On Thu, 19 Jul 2007 20:58:18 -0000, Leland Yee <lyee4062@gmail.com>
>>> wrote:
>>>
>>>> On Jul 18, 3:14 pm, John Forrest Tomlinson <usenetrem...@jt10000.com>
>>>> wrote:
>>>>
>>>>> Well, I guess I jinxed myself by saying how rarely I use it - today I
>>>>> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
>>>>> the pump barrel became quite hot.
>>>>>
>>>>> Is that normal? Should I perhaps lubricate the washer inside to
>>>>> reduce friction? If so, what should I use?
>>>
>>>
>>>> Now you know how diesel engines get away with using no spark plugs.
>>>
>>>
>>> I didn't know diesel engines have no sparks plugs.
>>
>>
>> Rudolf Diesel obviously had a much better PR agent than Nikolaus Otto.
>> Almost everyone refers to the compression ignition engine as a
>> "diesel", while the four-stoke spark ignition engine is hardly ever
>> called an "otto".
>>
>
> Obviously you never sat through any (long, tedious) thermodynamics
> classes.
???
> Now the poor bastard that invented the two-stroke is the one
> who got the PR shaft (I don't even remember his name.)
Joseph Day (spark ignition) and Dugald Clark (compression ignition),
which reminds me there is nothing like the sound of a 2-stroke V-6
Detroit Diesel [1].
[1] <http://www.telusplanet.net/public/ryq/6V-53_on_dyno.mp3 >.
--
Tom Sherman - Holstein-Friesland Bovinia
The weather is here, wish you were beautiful
--
Posted via a free Usenet account from http://www.teranews.com
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Date: 19 Jul 2007 20:49:56
From: Nate Nagel
Subject: Re: hot pump barrel
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Johnny Sunset aka Tom Sherman wrote:
> Nate Nagel wrote:
>
>> Johnny Sunset aka Tom Sherman wrote:
>>
>>> John Forrest Tomlinson wrote:
>>>
>>>> On Thu, 19 Jul 2007 20:58:18 -0000, Leland Yee <lyee4062@gmail.com>
>>>> wrote:
>>>>
>>>>> On Jul 18, 3:14 pm, John Forrest Tomlinson <usenetrem...@jt10000.com>
>>>>> wrote:
>>>>>
>>>>>> Well, I guess I jinxed myself by saying how rarely I use it - today I
>>>>>> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
>>>>>> the pump barrel became quite hot.
>>>>>>
>>>>>> Is that normal? Should I perhaps lubricate the washer inside to
>>>>>> reduce friction? If so, what should I use?
>>>>
>>>>
>>>>
>>>>> Now you know how diesel engines get away with using no spark plugs.
>>>>
>>>>
>>>>
>>>> I didn't know diesel engines have no sparks plugs.
>>>
>>>
>>>
>>> Rudolf Diesel obviously had a much better PR agent than Nikolaus
>>> Otto. Almost everyone refers to the compression ignition engine as a
>>> "diesel", while the four-stoke spark ignition engine is hardly ever
>>> called an "otto".
>>>
>>
>> Obviously you never sat through any (long, tedious) thermodynamics
>> classes.
>
>
> ???
I remember the names Otto and Diesel being frequently mentioned in
reference to various thermodynamic cycles, along with Carnot, Stirling,
etc. etc. etc...
>
>> Now the poor bastard that invented the two-stroke is the one who got
>> the PR shaft (I don't even remember his name.)
>
>
> Joseph Day (spark ignition) and Dugald Clark (compression ignition),
> which reminds me there is nothing like the sound of a 2-stroke V-6
> Detroit Diesel [1].
>
> [1] <http://www.telusplanet.net/public/ryq/6V-53_on_dyno.mp3>.
>
I'm a bit partial to the good old fashioned Otto engine, myself, but
there are so many that make wonderful yet delightfully distinct noises.
I guess favorites at the moment would be a high-compression Studebaker
V-8 (which I can indulge myself in) and probably a Porsche flat-six
(which I can't; so when I have the opportunity I roll the windows down
and tell passengers to shut the heck up <G >)
nate
--
replace "roosters" with "cox" to reply.
http://members.cox.net/njnagel
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Date: 19 Jul 2007 23:00:37
From: Booker C. Bense
Subject: Re: hot pump barrel
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In article <ekpv939nrbm1q6o6ictuqec71r9nf6p7f8@4ax.com >,
John Forrest Tomlinson <usenetremove@jt10000.com > wrote:
>On Thu, 19 Jul 2007 20:58:18 -0000, Leland Yee <lyee4062@gmail.com>
>wrote:
>
>
>I didn't know diesel engines have no sparks plugs.
http://en.wikipedia.org/wiki/Glow_plug
_ Booker C. Bense
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Date: 19 Jul 2007 17:16:47
From: Rex Kerr
Subject: Re: hot pump barrel
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On Jul 18, 12:14 pm, John Forrest Tomlinson <usenetrem...@jt10000.com >
wrote:
> Is that normal? Should I perhaps lubricate the washer inside to
> reduce friction? If so, what should I use?
If you lubricate the rubber parts with petrolium based lubricants they
will expand and the pump will no longer work!
That said, also be careful not to pump the tire too fast as it
overheats the rubber and it becomes soft and rolls off of the shaft
and the pump will no longer work.
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Date: 20 Jul 2007 00:19:38
From: Kinky Cowboy
Subject: Re: hot pump barrel
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On Thu, 19 Jul 2007 17:16:47 -0000, Rex Kerr <rexkerr@gmail.com >
wrote:
>
>If you lubricate the rubber parts with petrolium based lubricants they
>will expand
>
>That said, also be careful not to pump too fast as it
>overheats the rubber and it becomes soft and rolls off of the shaft
Ahem, family newsgroup...
Kinky Cowboy*
*Batteries not included
May contain traces of nuts
Your milage may vary
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Date: 19 Jul 2007 16:32:55
From: Bill Sornson
Subject: Re: hot pump barrel
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Kinky Cowboy wrote:
> On Thu, 19 Jul 2007 17:16:47 -0000, Rex Kerr <rexkerr@gmail.com>
> wrote:
>> That said, also be careful not to pump too fast as it
>> overheats the rubber and it becomes soft and rolls off of the shaft
> Ahem, family newsgroup...
Well done, Grasshopper.
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Date: 19 Jul 2007 13:06:28
From: mjenk20236@gmail.com
Subject: Re: hot pump barrel
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On Jul 18, 2:14 pm, John Forrest Tomlinson <usenetrem...@jt10000.com >
wrote:
> Well, I guess I jinxed myself by saying how rarely I use it - today I
> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
> the pump barrel became quite hot.
>
> Is that normal? Should I perhaps lubricate the washer inside to
> reduce friction? If so, what should I use?
> --
> JT
> ****************************
> Remove "remove" to reply
> Visithttp://www.jt10000.com
> ****************************
Adiabatic heating, see: http://en.wikipedia.org/wiki/Adiabatic_heating
Mike Jenkins
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Date: 18 Jul 2007 22:32:38
From: Johnny Sunset aka Tom Sherman
Subject: Re: hot pump barrel
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John Forrest Tomlinson wrote:
> Well, I guess I jinxed myself by saying how rarely I use it - today I
> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
> the pump barrel became quite hot.
>
> Is that normal? Should I perhaps lubricate the washer inside to
> reduce friction? If so, what should I use?
I think you are just blowing hot air! ;)
--
Tom Sherman - Holstein-Friesland Bovinia
The weather is here, wish you were beautiful
--
Posted via a free Usenet account from http://www.teranews.com
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Date: 18 Jul 2007 15:50:07
From: Michael Press
Subject: Re: hot pump barrel
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In article
<8gps935psvdomeu55liglr4u2fcce35isi@4ax.com >,
John Forrest Tomlinson <usenetremove@jt10000.com >
wrote:
> Well, I guess I jinxed myself by saying how rarely I use it - today I
> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
> the pump barrel became quite hot.
>
> Is that normal? Should I perhaps lubricate the washer inside to
> reduce friction? If so, what should I use?
Air molecules bounce off of the moving piston face with
more energy than they had before impact.
--
Michael Press
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Date: 18 Jul 2007 21:13:37
From: Kinky Cowboy
Subject: Re: hot pump barrel
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On Wed, 18 Jul 2007 15:14:30 -0400, John Forrest Tomlinson
<usenetremove@jt10000.com > wrote:
>Well, I guess I jinxed myself by saying how rarely I use it - today I
>got a flat tire and used a Zefal HPX pump. While pumping, I noticed
>the pump barrel became quite hot.
>
>Is that normal? Should I perhaps lubricate the washer inside to
>reduce friction? If so, what should I use?
http://en.wikipedia.org/wiki/Adiabatic_process#Adiabatic_heating_and_cooling
Kinky Cowboy*
*Batteries not included
May contain traces of nuts
Your milage may vary
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Date: 18 Jul 2007 19:32:11
From: Kristian M Zoerhoff
Subject: Re: hot pump barrel
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On 2007-07-18, John Forrest Tomlinson <usenetremove@jt10000.com > wrote:
> Well, I guess I jinxed myself by saying how rarely I use it - today I
> got a flat tire and used a Zefal HPX pump. While pumping, I noticed
> the pump barrel became quite hot.
>
> Is that normal? Should I perhaps lubricate the washer inside to
> reduce friction? If so, what should I use?
I believe this is quite normal; my RoadMorph did the same thing over the
weekend pumping up a friend's tire.
The increased air pressure in the pump barrel causes heating, similar to how
the decreased air pressure when you open up the relief valve on an air
compressor causes a rapid drop in temperature inside the compressor.
<http://en.wikipedia.org/wiki/Boyle%27s_Law >
--
__o Kristian Zoerhoff
_'\(,_ kristian.zoerhoff@gmail.com
(_)/ (_)
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Date: 18 Jul 2007 13:31:14
From:
Subject: Re: hot pump barrel
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On Wed, 18 Jul 2007 15:14:30 -0400, John Forrest Tomlinson
<usenetremove@jt10000.com > wrote:
>Well, I guess I jinxed myself by saying how rarely I use it - today I
>got a flat tire and used a Zefal HPX pump. While pumping, I noticed
>the pump barrel became quite hot.
>
>Is that normal? Should I perhaps lubricate the washer inside to
>reduce friction? If so, what should I use?
Dear John,
It's normal.
Any pump heats up because gas heats up as you compress it.
Try a few other pumps and you'll see how the bottom end (where the
compression takes place) heats up.
If the barrel is metal, the heat is conducted up toward the other end
of the pump. Plastic barrels conduct heat poorly, so the effect isn't
as likely to be noticed.
When I switched from a plastic Zefal mini-pump to a metal Topeak Road
Morph, the difference in how hot the pump got where I held it was
striking.
Cheers,
Carl Fogel
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