Engine configuration

Michael Henry a écrit :

There are new aircraft engine designs out the the Jabiru as an
air-cooled example and the Orenda as a liquid-cooled example. They
follow the same pattern that has become the norm.

The Jabiru was designed as a replacement for the VW, and the designers
adopted the same configuration and even the same RPM.

Best regards,
--
Gilles
http://contrails.free.fr

"Michael Henry" wrote in message
...
Greetings!

My last post provoked a long and interesting series of threads so I am
emboldened to make another post.

This question concerns the configuration or layout of an engine. I have
noticed that air-cooled engines tend to have an opposed configuration
whereas liquid-cooled engines tend to have a V configuration. Both are
also available inline but I'll take a leap and say these are a minority
(I'm talking about current production engines not historical engines).
There are some liquid-cooled horizontally-opposed engines but I can't
think of any air-cooled "V" engines. Why is this? It suggests to me that
the advantages of the V configuration are specific to liquid cooling. Is
this really the case?

The Wikipedia article on "V Engine" is quite short but it includes this:

"Certain types of V engine have been built as inverted engines,
most commonly for aircraft. Advantages include better visibility
in a single-engined airplane, and lower centre of gravity."

OK, these are two pretty good advantages! There are no disadvantages
listed. So why isn't the Lycoming O-540 or the Continental O-520 an
inverted V?

Regards,

Michael

Lots of motorcycles out there that are air cooled v-twins. Granted they are
limited in horsepower for their displacement. ;^) (that ought to bring out the
Harley guys)

Paul

On Thu, 13 Dec 2007 12:59:11 GMT, "Paul Hastings"
wrote:


"Michael Henry" wrote in message
...
Greetings!

My last post provoked a long and interesting series of threads so I am
emboldened to make another post.

This question concerns the configuration or layout of an engine. I have
noticed that air-cooled engines tend to have an opposed configuration
whereas liquid-cooled engines tend to have a V configuration. Both are
also available inline but I'll take a leap and say these are a minority
(I'm talking about current production engines not historical engines).
There are some liquid-cooled horizontally-opposed engines but I can't
think of any air-cooled "V" engines. Why is this? It suggests to me that
the advantages of the V configuration are specific to liquid cooling. Is
this really the case?

The Wikipedia article on "V Engine" is quite short but it includes this:

"Certain types of V engine have been built as inverted engines,
most commonly for aircraft. Advantages include better visibility
in a single-engined airplane, and lower centre of gravity."

OK, these are two pretty good advantages! There are no disadvantages
listed. So why isn't the Lycoming O-540 or the Continental O-520 an
inverted V?

Regards,

Michael

Lots of motorcycles out there that are air cooled v-twins. Granted they are
limited in horsepower for their displacement. ;^) (that ought to bring out the
Harley guys)

Paul

***************************************

Paul

What about us Indian guys )

Big John

On Thu, 13 Dec 2007 21:57:56 -0600, Big John wrote:

On Thu, 13 Dec 2007 12:59:11 GMT, "Paul Hastings"
Lots of motorcycles out there that are air cooled v-twins. Granted they are
limited in horsepower for their displacement. ;^) (that ought to bring out the
Harley guys)

Paul

What about us Indian guys )

With all the casino money, you can buy whatever engine you want. :-)

Ron Wanttaja

"Ron Wanttaja" wrote in message
...
On Thu, 13 Dec 2007 21:57:56 -0600, Big John wrote:

On Thu, 13 Dec 2007 12:59:11 GMT, "Paul Hastings"
Lots of motorcycles out there that are air cooled v-twins. Granted they
are
limited in horsepower for their displacement. ;^) (that ought to bring
out the
Harley guys)

Paul

What about us Indian guys )

With all the casino money, you can buy whatever engine you want. :-)

Ron Wanttaja

Good one, Ron!

Peter :-)

On Thu, 13 Dec 2007 20:11:01 -0800, Ron Wanttaja
wrote:

On Thu, 13 Dec 2007 21:57:56 -0600, Big John wrote:

On Thu, 13 Dec 2007 12:59:11 GMT, "Paul Hastings"
Lots of motorcycles out there that are air cooled v-twins. Granted they are
limited in horsepower for their displacement. ;^) (that ought to bring out the
Harley guys)

Paul

What about us Indian guys )

With all the casino money, you can buy whatever engine you want. :-)

Ron Wanttaja

*****************************
Ron

I spoke about an Indian motorcycle (in reply to the comment "that
ought to bring out the Harley guys"). Guess those bikes were before
most of the times for many in this group )

Big John

Big John a écrit :


I spoke about an Indian motorcycle (in reply to the comment "that
ought to bring out the Harley guys"). Guess those bikes were before
most of the times for many in this group )

Big John,

I had got the Indian bikes message correct. I also met Ariel Saquare
Fours, the lot.

Best regards,
--
Gilles
http://contrails.free.fr

In article ,
Big John wrote:

On Thu, 13 Dec 2007 20:11:01 -0800, Ron Wanttaja
wrote:

On Thu, 13 Dec 2007 21:57:56 -0600, Big John wrote:

On Thu, 13 Dec 2007 12:59:11 GMT, "Paul Hastings"
Lots of motorcycles out there that are air cooled v-twins. Granted they
are
limited in horsepower for their displacement. ;^) (that ought to bring
out the
Harley guys)

Paul

What about us Indian guys )

With all the casino money, you can buy whatever engine you want. :-)

Ron Wanttaja

*****************************
Ron

I spoke about an Indian motorcycle (in reply to the comment "that
ought to bring out the Harley guys"). Guess those bikes were before
most of the times for many in this group )

Big John

Until a year or two ago, they were making them new down the road in
Gilroy, CA.

Too bad they couldn't make a go of it.

"Michael Henry" wrote in message
...
Greetings!

My last post provoked a long and interesting series of threads so I am
emboldened to make another post.

This question concerns the configuration or layout of an engine. I have
noticed that air-cooled engines tend to have an opposed configuration
whereas liquid-cooled engines tend to have a V configuration. Both are
also available inline but I'll take a leap and say these are a minority
(I'm talking about current production engines not historical engines).
There are some liquid-cooled horizontally-opposed engines but I can't
think of any air-cooled "V" engines. Why is this? It suggests to me that
the advantages of the V configuration are specific to liquid cooling. Is
this really the case?

The Wikipedia article on "V Engine" is quite short but it includes this:

"Certain types of V engine have been built as inverted engines,
most commonly for aircraft. Advantages include better visibility
in a single-engined airplane, and lower centre of gravity."

OK, these are two pretty good advantages! There are no disadvantages
listed. So why isn't the Lycoming O-540 or the Continental O-520 an
inverted V?

Regards,

Michael

I can think of two inverted "V" air cooled aero engines that were produced
in quantity.
One is the German Argus As 10C 240HP used in the Me 108 and the Storch and
the other is the American Ranger V-770 inverted V12.
See: http://www.oldengine.org/members/die...ord/Ranger.htm
and http://en.wikipedia.org/wiki/Argus_As_10

"Bill Daniels" bildan@comcast-dot-net wrote:

I can think of two inverted "V" air cooled aero engines that were
produced in quantity.
One is the German Argus As 10C 240HP used in the Me 108 and the Storch
and the other is the American Ranger V-770 inverted V12.
See: http://www.oldengine.org/members/die...ord/Ranger.htm
and http://en.wikipedia.org/wiki/Argus_As_10

LOM's are still in production: http://www.moraviation.com