Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.

"basskisser" wrote in message
oups.com...

Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.

It's not instantaneous. It's slowed down a great deal by the valve stem
diameter...much more than you assumption accounted for.

According to the following website, a 4cfm @ 150 psi compressor fills a
31x10.5" tire to 35 psi in just under 2 minutes.

http://www.eco4wd.com/products/Hardw...xtremeAire.pdf

A lower rate and psi would take a bit longer.

NOYB wrote:
"basskisser" wrote in message
oups.com...

Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.

It's not instantaneous. It's slowed down a great deal by the valve stem
diameter...much more than you assumption accounted for.

Really, then why in hell do you think I stated:

"The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc."
??????

"basskisser" wrote in message
oups.com...

NOYB wrote:
"basskisser" wrote in message
oups.com...

Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various
purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.

It's not instantaneous. It's slowed down a great deal by the valve stem
diameter...much more than you assumption accounted for.

Really, then why in hell do you think I stated:

"The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc."
??????

I acknowledged that you said that. But I also said that the valve stem
slows things down a lot more than you accounted for. Thus, it's hardly
*instantaneous*.

NOYB wrote:
"basskisser" wrote in message
oups.com...

NOYB wrote:
"basskisser" wrote in message
oups.com...

Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various
purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.

It's not instantaneous. It's slowed down a great deal by the valve stem
diameter...much more than you assumption accounted for.

Really, then why in hell do you think I stated:

"The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc."
??????

I acknowledged that you said that. But I also said that the valve stem
slows things down a lot more than you accounted for. Thus, it's hardly
*instantaneous*.

Alot more than I accounted for?? How much DID I "account for"?

"basskisser" wrote in message
oups.com...

NOYB wrote:
"basskisser" wrote in message
oups.com...

NOYB wrote:
"basskisser" wrote in message
oups.com...

Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various
purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors
to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the
tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.

It's not instantaneous. It's slowed down a great deal by the valve
stem
diameter...much more than you assumption accounted for.

Really, then why in hell do you think I stated:

"The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc."
??????

I acknowledged that you said that. But I also said that the valve stem
slows things down a lot more than you accounted for. Thus, it's hardly
*instantaneous*.

Alot more than I accounted for?? How much DID I "account for"?

Apparently not enough. You described a couple of minutes of filling time as
"nearly instantaneous".

On Tue, 20 Jun 2006 15:25:56 GMT, "NOYB" wrote:

It's not instantaneous. It's slowed down a great deal by the valve stem
diameter...much more than you assumption accounted for.

If we could properly channel the hot air in this newsgroup, the time
would be faster than instantaneous. :-)

How's your fishing been this spring? Any tarpon?

"Wayne.B" wrote in message
...
On Tue, 20 Jun 2006 15:25:56 GMT, "NOYB" wrote:

It's not instantaneous. It's slowed down a great deal by the valve stem
diameter...much more than you assumption accounted for.

If we could properly channel the hot air in this newsgroup, the time
would be faster than instantaneous. :-)

How's your fishing been this spring? Any tarpon?


No tarpon. I just haven't been in the mood to target them this year.

But I made a trip to Port Everglades 3 weeks ago and snagged a 35lb bull
dolphin. This past weekend, I caught a 30lb king about 15 miles out of
Redfish Pass.

The pelagics have been good to me...but the bottom fishing has been
non-existant inside 30 miles. (all that Caloosahatchee runoff in the fall
and winter)

"basskisser" wrote in message
oups.com...

Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.


Sorry, but you're wrong. Each one of those compressors will fill the tire at
the same rate since each exceeds the CFM that the valve stem will allow.

Sam wrote:
"basskisser" wrote in message
oups.com...

Harry Krause wrote:
I'm looking for a new semi-portable air compressor for various purposes.

Here's a spec for the models I am considering.


CFM/PSI 3.6@100 3.8@100 4.5@100


Let's say I have a tire on a 17" wheel to fill to 55 psi.

What is the approximate time it will take each of these compressors to
fill the tire, everything else being equal?

Is there a formula?

Thanks (English major here)

The size of the tank is important here, as well as the maximum tank
psi. If your compressor has a larger tank than the volume of the tire,
then it's almost instantaneous, slowed down only by the size of the
various component openings like valve stems, hose, fittings, etc.


Sorry, but you're wrong. Each one of those compressors will fill the tire at
the same rate since each exceeds the CFM that the valve stem will allow.

Am I the only one that can read the statement that it's slowed down
"ONLY BY THE SIZE OF VARIOUS COMPONENT OPENINGS LIKE VALVE STEMS, HOSE,
FITTINGS, ETC." ????