The Murphy Builders Site

Posted: **Sat Feb 18, 2012 2:23 pm**

Here it is until the link is fixed! Cheers, Wayne
.....................................
SERVICE BULLETIN 151105

Aircraft Affected; M-14 Radial Powered Moose.

During a recent test flight of a M-14 Radial powered Moose floatplane it was
noticed that the engine did not seem to be producing maximum horsepower.

Manifold pressure was approximately 32 - 33 inches.

The Murphy M-14 air box was fitted with a Bracket air filter which was
removed for a temporary test.

Upon full power take off the engine manifold pressure increased by 3 to 4
inches.

The air box was refitted with a screen behind a dust filter made from a
lightly oiled scotchbrite pad with no noticeable drop in power.

This in no way implies that Bracket air filters are inadequate but rather
the physical opening or frontal area of the air box and carburetor may not
be large enough for any

restricted airflow.

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Posted: **Sat Feb 18, 2012 2:23 pm**

Folks,

I just talked to Jill Gernetzke who sells the Russian version of the
M-14. Jill said she and Carl Hays do NOT recommend using a scotchbrite
pad--oiled or otherwise.

Ted Waltman

P.S. I'd be happy as a pig in hot mud if I saw even 32" at takeoff here
in Denver. <grin>

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Wayne G. O'Shea
Sent: Monday, November 21, 2005 2:01 PM
To: rebel-builders@dcsol.com
Subject: M-14 Moose Service Bulletin

Here it is until the link is fixed! Cheers, Wayne
.....................................
SERVICE BULLETIN 151105

Aircraft Affected; M-14 Radial Powered Moose.

During a recent test flight of a M-14 Radial powered Moose floatplane it
was noticed that the engine did not seem to be producing maximum
horsepower.

Manifold pressure was approximately 32 - 33 inches.

The Murphy M-14 air box was fitted with a Bracket air filter which was
removed for a temporary test.

Upon full power take off the engine manifold pressure increased by 3 to
4 inches.

The air box was refitted with a screen behind a dust filter made from a
lightly oiled scotchbrite pad with no noticeable drop in power.

This in no way implies that Bracket air filters are inadequate but
rather the physical opening or frontal area of the air box and
carburetor may not be large enough for any

restricted airflow.

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Posted: **Sat Feb 18, 2012 2:23 pm**

I imagine it was a tempory thing to stop from ingesting anything for the
test Ted....mind you I did see a case of a homebuilt that the insurance
company refused to pay up for in the USA due to unapproved mods after the
intitial flight permit was issued and the guy had a scotchbrite pad for an
air filter (that may very well have been there from day one!).

When it comes right down to it, it's probably a great filter thanks to the
immense amount of "burr" like structure to catch dirt on.

----- Original Message -----
From: "Ted Waltman" <tedwaltman@i1ci.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:09 PM
Subject: RE: M-14 Moose Service Bulletin

Folks,

I just talked to Jill Gernetzke who sells the Russian version of the
M-14. Jill said she and Carl Hays do NOT recommend using a scotchbrite
pad--oiled or otherwise.

Ted Waltman

P.S. I'd be happy as a pig in hot mud if I saw even 32" at takeoff here
in Denver. <grin>

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Wayne G. O'Shea
Sent: Monday, November 21, 2005 2:01 PM
To: rebel-builders@dcsol.com
Subject: M-14 Moose Service Bulletin

Here it is until the link is fixed! Cheers, Wayne
.....................................
SERVICE BULLETIN 151105

Aircraft Affected; M-14 Radial Powered Moose.

During a recent test flight of a M-14 Radial powered Moose floatplane it
was noticed that the engine did not seem to be producing maximum
horsepower.

Manifold pressure was approximately 32 - 33 inches.

The Murphy M-14 air box was fitted with a Bracket air filter which was
removed for a temporary test.

Upon full power take off the engine manifold pressure increased by 3 to
4 inches.

The air box was refitted with a screen behind a dust filter made from a
lightly oiled scotchbrite pad with no noticeable drop in power.

This in no way implies that Bracket air filters are inadequate but
rather the physical opening or frontal area of the air box and
carburetor may not be large enough for any

restricted airflow.

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Posted: **Sat Feb 18, 2012 2:23 pm**

Lots of 'burr' to catch stuff on, but let us not forget the technical term
for this stuff is "Non woven abrasive". Simply no getting away from the fact
that some of the abrasive media IS going to dislodge from the 'air filter'.
And where do we suppose this media will go?
Personally, I think a chap would be better with no filter at all. At least
there would be a *chance* of not ingesting anything.
Life is complete. I've heard it all.....................
Bill

On 11/21/05, Wayne G. O'Shea <oifa@irishfield.on.ca> wrote:

I imagine it was a tempory thing to stop from ingesting anything for the
test Ted....mind you I did see a case of a homebuilt that the insurance
company refused to pay up for in the USA due to unapproved mods after the
intitial flight permit was issued and the guy had a scotchbrite pad for an
air filter (that may very well have been there from day one!).

When it comes right down to it, it's probably a great filter thanks to the
immense amount of "burr" like structure to catch dirt on.

----- Original Message -----
From: "Ted Waltman" <tedwaltman@i1ci.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:09 PM
Subject: RE: M-14 Moose Service Bulletin

Folks,

I just talked to Jill Gernetzke who sells the Russian version of the
M-14. Jill said she and Carl Hays do NOT recommend using a scotchbrite
pad--oiled or otherwise.

Ted Waltman

P.S. I'd be happy as a pig in hot mud if I saw even 32" at takeoff here
in Denver. <grin>

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Wayne G. O'Shea
Sent: Monday, November 21, 2005 2:01 PM
To: rebel-builders@dcsol.com
Subject: M-14 Moose Service Bulletin

Here it is until the link is fixed! Cheers, Wayne
.....................................
SERVICE BULLETIN 151105

Aircraft Affected; M-14 Radial Powered Moose.

During a recent test flight of a M-14 Radial powered Moose floatplane it
was noticed that the engine did not seem to be producing maximum
horsepower.

Manifold pressure was approximately 32 - 33 inches.

The Murphy M-14 air box was fitted with a Bracket air filter which was
removed for a temporary test.

Upon full power take off the engine manifold pressure increased by 3 to
4 inches.

The air box was refitted with a screen behind a dust filter made from a
lightly oiled scotchbrite pad with no noticeable drop in power.

This in no way implies that Bracket air filters are inadequate but
rather the physical opening or frontal area of the air box and
carburetor may not be large enough for any

restricted airflow.

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Posted: **Sat Feb 18, 2012 2:23 pm**

Thanks Bill....guess I won't pass these bulletins on anymore for those that
can't wait for web links to be fixed! I get shit on enough...I don't need it
here!

----- Original Message -----
From: "Bill Delcambre" <bdaileron@gmail.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:24 PM
Subject: Re: M-14 Moose Service Bulletin

Lots of 'burr' to catch stuff on, but let us not forget the technical term
for this stuff is "Non woven abrasive". Simply no getting away from the

fact

that some of the abrasive media IS going to dislodge from the 'air

filter'.

And where do we suppose this media will go?
Personally, I think a chap would be better with no filter at all. At

least

there would be a *chance* of not ingesting anything.
Life is complete. I've heard it all.....................
Bill

On 11/21/05, Wayne G. O'Shea <oifa@irishfield.on.ca> wrote:
I imagine it was a tempory thing to stop from ingesting anything for the
test Ted....mind you I did see a case of a homebuilt that the insurance
company refused to pay up for in the USA due to unapproved mods after

the

intitial flight permit was issued and the guy had a scotchbrite pad for

an

air filter (that may very well have been there from day one!).

When it comes right down to it, it's probably a great filter thanks to

the

immense amount of "burr" like structure to catch dirt on.

----- Original Message -----
From: "Ted Waltman" <tedwaltman@i1ci.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:09 PM
Subject: RE: M-14 Moose Service Bulletin

Folks,

I just talked to Jill Gernetzke who sells the Russian version of the
M-14. Jill said she and Carl Hays do NOT recommend using a scotchbrite
pad--oiled or otherwise.

Ted Waltman

P.S. I'd be happy as a pig in hot mud if I saw even 32" at takeoff

here

in Denver. <grin>

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Wayne G. O'Shea
Sent: Monday, November 21, 2005 2:01 PM
To: rebel-builders@dcsol.com
Subject: M-14 Moose Service Bulletin

Here it is until the link is fixed! Cheers, Wayne
.....................................
SERVICE BULLETIN 151105

Aircraft Affected; M-14 Radial Powered Moose.

During a recent test flight of a M-14 Radial powered Moose floatplane

it

was noticed that the engine did not seem to be producing maximum
horsepower.

Manifold pressure was approximately 32 - 33 inches.

The Murphy M-14 air box was fitted with a Bracket air filter which was
removed for a temporary test.

Upon full power take off the engine manifold pressure increased by 3

to

4 inches.

The air box was refitted with a screen behind a dust filter made from

a

lightly oiled scotchbrite pad with no noticeable drop in power.

This in no way implies that Bracket air filters are inadequate but
rather the physical opening or frontal area of the air box and
carburetor may not be large enough for any

restricted airflow.

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Posted: **Sat Feb 18, 2012 2:23 pm**

I've been emailing back and forth with Robin this morning suggesting the
same, not to publish using the scotchbrite. Jill said they have had
scotchbrite trash M14 air compressors - they found the red fibers inside. I
wouldn't put it on my carb.

It seems the opening size should be adequate on the air box? The air intake
into the carb is about 3.25" diameter or about 8.5 square inches and the air
box filter opening is around 16.25 square inches on mine.

We have a K&N filter on ours but as yet it is untested.

What are you flying M14 guys using??

Scott

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Ted
Waltman
Sent: Monday, November 21, 2005 2:10 PM
To: rebel-builders@dcsol.com
Subject: RE: M-14 Moose Service Bulletin

Folks,

I just talked to Jill Gernetzke who sells the Russian version of the
M-14. Jill said she and Carl Hays do NOT recommend using a scotchbrite
pad--oiled or otherwise.

Ted Waltman

P.S. I'd be happy as a pig in hot mud if I saw even 32" at takeoff here
in Denver. <grin>

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Wayne G. O'Shea
Sent: Monday, November 21, 2005 2:01 PM
To: rebel-builders@dcsol.com
Subject: M-14 Moose Service Bulletin

Here it is until the link is fixed! Cheers, Wayne
.....................................
SERVICE BULLETIN 151105

Aircraft Affected; M-14 Radial Powered Moose.

During a recent test flight of a M-14 Radial powered Moose floatplane it
was noticed that the engine did not seem to be producing maximum
horsepower.

Manifold pressure was approximately 32 - 33 inches.

The Murphy M-14 air box was fitted with a Bracket air filter which was
removed for a temporary test.

Upon full power take off the engine manifold pressure increased by 3 to
4 inches.

The air box was refitted with a screen behind a dust filter made from a
lightly oiled scotchbrite pad with no noticeable drop in power.

This in no way implies that Bracket air filters are inadequate but
rather the physical opening or frontal area of the air box and
carburetor may not be large enough for any

restricted airflow.

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Posted: **Sat Feb 18, 2012 2:23 pm**

The old MAM demonstrator C-GZBD(?) has had scotchbrit for some time. Of
course unknown if it is/was a problem.

FWIW
Scott

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Wayne
G. O'Shea
Sent: Monday, November 21, 2005 2:15 PM
To: rebel-builders@dcsol.com
Subject: Re: M-14 Moose Service Bulletin

I imagine it was a tempory thing to stop from ingesting anything for the
test Ted....mind you I did see a case of a homebuilt that the insurance
company refused to pay up for in the USA due to unapproved mods after the
intitial flight permit was issued and the guy had a scotchbrite pad for an
air filter (that may very well have been there from day one!).

When it comes right down to it, it's probably a great filter thanks to the
immense amount of "burr" like structure to catch dirt on.

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Posted: **Sat Feb 18, 2012 2:23 pm**

Don't think anyone was S#&ting on you before, just participating in the
discussion, but they may now...<grin>

Scott

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Wayne
G. O'Shea
Sent: Monday, November 21, 2005 2:31 PM
To: rebel-builders@dcsol.com
Subject: Re: M-14 Moose Service Bulletin

Thanks Bill....guess I won't pass these bulletins on anymore for those that
can't wait for web links to be fixed! I get shit on enough...I don't need it
here!

----- Original Message -----
From: "Bill Delcambre" <bdaileron@gmail.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:24 PM
Subject: Re: M-14 Moose Service Bulletin

Lots of 'burr' to catch stuff on, but let us not forget the technical term
for this stuff is "Non woven abrasive". Simply no getting away from the

fact

that some of the abrasive media IS going to dislodge from the 'air

filter'.

And where do we suppose this media will go?
Personally, I think a chap would be better with no filter at all. At

least

there would be a *chance* of not ingesting anything.
Life is complete. I've heard it all.....................
Bill

On 11/21/05, Wayne G. O'Shea <oifa@irishfield.on.ca> wrote:
I imagine it was a tempory thing to stop from ingesting anything for the
test Ted....mind you I did see a case of a homebuilt that the insurance
company refused to pay up for in the USA due to unapproved mods after

the

intitial flight permit was issued and the guy had a scotchbrite pad for

an

air filter (that may very well have been there from day one!).

When it comes right down to it, it's probably a great filter thanks to

the

immense amount of "burr" like structure to catch dirt on.

----- Original Message -----
From: "Ted Waltman" <tedwaltman@i1ci.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:09 PM
Subject: RE: M-14 Moose Service Bulletin

Folks,

I just talked to Jill Gernetzke who sells the Russian version of the
M-14. Jill said she and Carl Hays do NOT recommend using a scotchbrite
pad--oiled or otherwise.

Ted Waltman

P.S. I'd be happy as a pig in hot mud if I saw even 32" at takeoff

here

in Denver. <grin>

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Wayne G. O'Shea
Sent: Monday, November 21, 2005 2:01 PM
To: rebel-builders@dcsol.com
Subject: M-14 Moose Service Bulletin

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Posted: **Sat Feb 18, 2012 2:23 pm**

Wayne,
I'm totally taken aback! I'd kneel at your feet and apologize, if I
thought that my words were taken as an insult to you. Please accept my most
humble apologies and know that this poor tattered example of an aircraft
tinkerer never meant to dump on you.
...... unless it was YOU that put the Scotchbrite in the air filter. But
that can't be the case.. You'd be far too wise to ever publicize it.
Wouldn't you??? :) Hell, I'd never admit it.
Seriously, no insult intended. I still can't get over Scotchbrite as a
filter though... I gotta share that one with a few buddies, over a cold
beer... eh? We all love you Wayne! Don't you know that???
Bill

On 11/21/05, Wayne G. O'Shea <oifa@irishfield.on.ca> wrote:

Thanks Bill....guess I won't pass these bulletins on anymore for those
that
can't wait for web links to be fixed! I get shit on enough...I don't need
it
here!

----- Original Message -----
From: "Bill Delcambre" <bdaileron@gmail.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:24 PM
Subject: Re: M-14 Moose Service Bulletin

Lots of 'burr' to catch stuff on, but let us not forget the technical
term
for this stuff is "Non woven abrasive". Simply no getting away from the
fact
that some of the abrasive media IS going to dislodge from the 'air
filter'.
And where do we suppose this media will go?
Personally, I think a chap would be better with no filter at all. At
least
there would be a *chance* of not ingesting anything.
Life is complete. I've heard it all.....................
Bill

On 11/21/05, Wayne G. O'Shea <oifa@irishfield.on.ca> wrote:
I imagine it was a tempory thing to stop from ingesting anything for
the
test Ted....mind you I did see a case of a homebuilt that the
insurance
company refused to pay up for in the USA due to unapproved mods after
the
intitial flight permit was issued and the guy had a scotchbrite pad
for
an
air filter (that may very well have been there from day one!).

When it comes right down to it, it's probably a great filter thanks to
the
immense amount of "burr" like structure to catch dirt on.

----- Original Message -----
From: "Ted Waltman" <tedwaltman@i1ci.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:09 PM
Subject: RE: M-14 Moose Service Bulletin

scotchbrite
here
Of
floatplane
it
was
to
from
a

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Posted: **Sat Feb 18, 2012 2:23 pm**

Been a long day Bill...11 & 1/2 hours under the hood spreading and riveting
Sikaflex and it's nasty isocynide. Nerves are just a tad frayed I guess..and
when I saw my "burr" quoted and "life is complete..I've heard it all"......
looked pretty much directed at me...not MAM.

Wayne

----- Original Message -----
From: "Bill Delcambre" <bdaileron@gmail.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 5:25 PM
Subject: Re: M-14 Moose Service Bulletin

Wayne,
I'm totally taken aback! I'd kneel at your feet and apologize, if I
thought that my words were taken as an insult to you. Please accept my

most

humble apologies and know that this poor tattered example of an aircraft
tinkerer never meant to dump on you.
...... unless it was YOU that put the Scotchbrite in the air filter. But
that can't be the case.. You'd be far too wise to ever publicize it.
Wouldn't you??? :) Hell, I'd never admit it.
Seriously, no insult intended. I still can't get over Scotchbrite as a
filter though... I gotta share that one with a few buddies, over a cold
beer... eh? We all love you Wayne! Don't you know that???
Bill

On 11/21/05, Wayne G. O'Shea <oifa@irishfield.on.ca> wrote:
Thanks Bill....guess I won't pass these bulletins on anymore for those
that
can't wait for web links to be fixed! I get shit on enough...I don't

need

it
here!

----- Original Message -----
From: "Bill Delcambre" <bdaileron@gmail.com>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 21, 2005 4:24 PM
Subject: Re: M-14 Moose Service Bulletin

Lots of 'burr' to catch stuff on, but let us not forget the technical
term
for this stuff is "Non woven abrasive". Simply no getting away from

the

fact
that some of the abrasive media IS going to dislodge from the 'air
filter'.
And where do we suppose this media will go?
Personally, I think a chap would be better with no filter at all. At
least
there would be a *chance* of not ingesting anything.
Life is complete. I've heard it all.....................
Bill

On 11/21/05, Wayne G. O'Shea <oifa@irishfield.on.ca> wrote:
the
insurance

after

the
for
an

to

the

the

scotchbrite
here
Of
floatplane
it
was

3

to
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Posted: **Sat Feb 18, 2012 2:23 pm**

Wayne:

Thanks for the copy of the bullein! ! ! !

Makes a guy think about what's going on out there.

Again THANKS! ! !

Steve H
Moose 213
"Wayne G. O'Shea" <oifa@irishfield.on.ca> wrote:
Here it is until the link is fixed! Cheers, Wayne
.....................................
SERVICE BULLETIN 151105

Aircraft Affected; M-14 Radial Powered Moose.

During a recent test flight of a M-14 Radial powered Moose floatplane it was
noticed that the engine did not seem to be producing maximum horsepower.

Manifold pressure was approximately 32 - 33 inches.

The Murphy M-14 air box was fitted with a Bracket air filter which was
removed for a temporary test.

Upon full power take off the engine manifold pressure increased by 3 to 4
inches.

The air box was refitted with a screen behind a dust filter made from a
lightly oiled scotchbrite pad with no noticeable drop in power.

This in no way implies that Bracket air filters are inadequate but rather
the physical opening or frontal area of the air box and carburetor may not
be large enough for any

restricted airflow.

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