Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

Asking Bill to stop being an idiot is a bit like asking your dog to stop
licking his butt. The dog will look up and acknowledge the command, but
pretty soon his butt will itch again, and he will go back to cleaning it.

The best you can do is hope he doesn't lick your face next ...

And, Bill - like the dog - might be annoying but he means well is right more
often than not, except when he drifts completely off target. Your dog drifts
off target too, but then you scream at him to stop licking his nuts.

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

freezeups.
>
> Expansion of any gas [including the atmosphere in a venturi] causes
> adiabatic cooling. You can get propane freeze-up at fairly high
> temperature if the humidity is high enough and the combination of
> pressure drop in the airflow and in the propane expansion is
> high enough.
>
> Don't remember any of the Suburban Propane trucks having freezeover
> problems in winter, but then never tried driving one in Montana or
> Alaska grade winters...just down to maybe 0 degrees F.


Yes, all venturis cause a temperature drop which can cause carburetor
icing.
_Atmospheric water_ is what freezes. It's especially prevalent in
Lycoming and Continental engines because the updraft carburetor is on
the bottom of the oil pan. It's rarest on American V8s because the
carburetor is (was) on the manifold where it stays hot. Carburetor
icing occurs at any outside temperature ABOVE freezing, but usually
between 70 and 40 degrees Fahrenheit and in high humidity.

Below 32 degrees OAT carburetor icing doesn't occur.

This is on the Private Pilot written test as you pilots know. It's
why you apply carb heat in the pattern. Carb icing is most problematic
with aircraft engines but can occur on inline racing car engines with
SU or Weber carbs with fresh air piped in so it isn't breathing hot
underhood air, or on tractors with updraft carbs out in the breeze.

Propane is a vapor, not a liquid,when it enters the carburetor. So if
the propane carb has a venturi it could ice. But it just doesn't seem
to be a common problem.

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

freezeups.
>
> Expansion of any gas [including the atmosphere in a venturi] causes
> adiabatic cooling. You can get propane freeze-up at fairly high
> temperature if the humidity is high enough and the combination of
> pressure drop in the airflow and in the propane expansion is
> high enough.
>
> Don't remember any of the Suburban Propane trucks having freezeover
> problems in winter, but then never tried driving one in Montana or
> Alaska grade winters...just down to maybe 0 degrees F.


Yes, all venturis cause a temperature drop which can cause carburetor
icing.
_Atmospheric water_ is what freezes. It's especially prevalent in
Lycoming and Continental engines because the updraft carburetor is on
the bottom of the oil pan. It's rarest on American V8s because the
carburetor is (was) on the manifold where it stays hot. Carburetor
icing occurs at any outside temperature ABOVE freezing, but usually
between 70 and 40 degrees Fahrenheit and in high humidity.

Below 32 degrees OAT carburetor icing doesn't occur.

This is on the Private Pilot written test as you pilots know. It's
why you apply carb heat in the pattern. Carb icing is most problematic
with aircraft engines but can occur on inline racing car engines with
SU or Weber carbs with fresh air piped in so it isn't breathing hot
underhood air, or on tractors with updraft carbs out in the breeze.

Propane is a vapor, not a liquid,when it enters the carburetor. So if
the propane carb has a venturi it could ice. But it just doesn't seem
to be a common problem.

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

freezeups.
>
> Expansion of any gas [including the atmosphere in a venturi] causes
> adiabatic cooling. You can get propane freeze-up at fairly high
> temperature if the humidity is high enough and the combination of
> pressure drop in the airflow and in the propane expansion is
> high enough.
>
> Don't remember any of the Suburban Propane trucks having freezeover
> problems in winter, but then never tried driving one in Montana or
> Alaska grade winters...just down to maybe 0 degrees F.


Yes, all venturis cause a temperature drop which can cause carburetor
icing.
_Atmospheric water_ is what freezes. It's especially prevalent in
Lycoming and Continental engines because the updraft carburetor is on
the bottom of the oil pan. It's rarest on American V8s because the
carburetor is (was) on the manifold where it stays hot. Carburetor
icing occurs at any outside temperature ABOVE freezing, but usually
between 70 and 40 degrees Fahrenheit and in high humidity.

Below 32 degrees OAT carburetor icing doesn't occur.

This is on the Private Pilot written test as you pilots know. It's
why you apply carb heat in the pattern. Carb icing is most problematic
with aircraft engines but can occur on inline racing car engines with
SU or Weber carbs with fresh air piped in so it isn't breathing hot
underhood air, or on tractors with updraft carbs out in the breeze.

Propane is a vapor, not a liquid,when it enters the carburetor. So if
the propane carb has a venturi it could ice. But it just doesn't seem
to be a common problem.

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

Jeff, you're an a**hole too!
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

CRWLR wrote:
>
> Asking Bill to stop being an idiot is a bit like asking your dog to stop
> licking his butt. The dog will look up and acknowledge the command, but
> pretty soon his butt will itch again, and he will go back to cleaning it.
>
> The best you can do is hope he doesn't lick your face next ...
>
> And, Bill - like the dog - might be annoying but he means well is right more
> often than not, except when he drifts completely off target. Your dog drifts
> off target too, but then you scream at him to stop licking his nuts.

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

Jeff, you're an a**hole too!
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

CRWLR wrote:
>
> Asking Bill to stop being an idiot is a bit like asking your dog to stop
> licking his butt. The dog will look up and acknowledge the command, but
> pretty soon his butt will itch again, and he will go back to cleaning it.
>
> The best you can do is hope he doesn't lick your face next ...
>
> And, Bill - like the dog - might be annoying but he means well is right more
> often than not, except when he drifts completely off target. Your dog drifts
> off target too, but then you scream at him to stop licking his nuts.

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

Jeff, you're an a**hole too!
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

CRWLR wrote:
>
> Asking Bill to stop being an idiot is a bit like asking your dog to stop
> licking his butt. The dog will look up and acknowledge the command, but
> pretty soon his butt will itch again, and he will go back to cleaning it.
>
> The best you can do is hope he doesn't lick your face next ...
>
> And, Bill - like the dog - might be annoying but he means well is right more
> often than not, except when he drifts completely off target. Your dog drifts
> off target too, but then you scream at him to stop licking his nuts.

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

So were the old super-charged, piston-engined fighters of WWII more immune to
this (i.e. because of the heat imparted to the air charge entering the engine)?
I swear I thought some of those piston-engined bombers of WWII flew regularly
at altitudes above 20,000 feet.
-Bill (remove "botizer" to reply via email)

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

So were the old super-charged, piston-engined fighters of WWII more immune to
this (i.e. because of the heat imparted to the air charge entering the engine)?
I swear I thought some of those piston-engined bombers of WWII flew regularly
at altitudes above 20,000 feet.
-Bill (remove "botizer" to reply via email)

Re: Quit Being A Goddamn Idiot, Bill Hughes!!
 

So were the old super-charged, piston-engined fighters of WWII more immune to
this (i.e. because of the heat imparted to the air charge entering the engine)?
I swear I thought some of those piston-engined bombers of WWII flew regularly
at altitudes above 20,000 feet.
-Bill (remove "botizer" to reply via email)