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M14P sound during flight.

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sapril001(at)hotmail.com
Guest

Posted: Wed Sep 28, 2022 10:36 am Post subject: M14P sound during flight.

Hi all,



I need your experience on the M14P. I am flying a Murphy Moose with a M14P 400HP engine spinning a MTV9 propeller.The airplane is on amphib floats.



The engine runs OK with all the parameters in the green. But the engine make an unusual noise when we are in flight, it makes a kind of RAA_ RAA_ RAA  with a period of about 2 seconds. At 1840 RPM it is very noticable at 2000 RPM it is louder, this noise can also be felt as a vibration in the floor of the airplane. The prop check OK no loose blade or damage, it perform normally, The RPM is constant no variation seen on an 3 1/8’’ analog gauge. We can not find anything loose on the airplane, The cowling is solid, the float guide wire are tight.



Any idea what can cause this noise, it really seems to come from the engine

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markbitterlich(at)embarqm
Guest

Posted: Wed Sep 28, 2022 1:08 pm Post subject: M14P sound during flight.

I apologize for stating the obvious, but this has the feel of a prop being out of balance. 

 

r/

 

Mark Bitterlich 

Yak-50 N50YK

 

From: owner-m14pengines-list-server(at)matronics.com <owner-m14pengines-list-server(at)matronics.com> On Behalf Of Sylvain April

Sent: Wednesday, September 28, 2022 2:36 PM

To: m14pengines-list(at)matronics.com

Subject: M14P sound during flight.

 

Hi all,

 

I need your experience on the M14P. I am flying a Murphy Moose with a M14P 400HP engine spinning a MTV9 propeller.The airplane is on amphib floats.

 

The engine runs OK with all the parameters in the green. But the engine make an unusual noise when we are in flight, it makes a kind of RAA_ RAA_ RAA  with a period of about 2 seconds. At 1840 RPM it is very noticable at 2000 RPM it is louder, this noise can also be felt as a vibration in the floor of the airplane. The prop check OK no loose blade or damage, it perform normally, The RPM is constant no variation seen on an 3 1/8’’ analog gauge. We can not find anything loose on the airplane, The cowling is solid, the float guide wire are tight.

 

Any idea what can cause this noise, it really seems to come from the engine.

 

Thanks

Sylvain April

 

 

 

Envoyé à partir de Courrier pour Windows

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wamflight(at)gmail.com
Guest

Posted: Wed Sep 28, 2022 3:40 pm Post subject: M14P sound during flight.

We all seem to get a low frequency vibration or rough spot that it doesnt like. Does it follow when changing power setting?



 	  Quote: 	
		  On Sep 28, 2022, at 1:38 PM, Sylvain April <sapril001(at)hotmail.com> wrote:



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Hi all, 

  

I need your experience on the M14P. I am flying a Murphy Moose with a M14P 400HP engine spinning a MTV9 propeller.The airplane is on amphib floats. 

  

The engine runs OK with all the parameters in the green. But the engine make an unusual noise when we are in flight, it makes a kind of RAA_ RAA_ RAA  with a period of about 2 seconds. At 1840 RPM it is very noticable at 2000 RPM it is  louder, this noise can also be felt as a vibration in the floor of the airplane. The prop check OK no loose blade or damage, it perform normally, The RPM is constant no variation seen on an 3 1/8â€™â€™ analog gauge. We can not find anything loose on the airplane,  The cowling is solid, the float guide wire are tight. 

  

Any idea what can cause this noise, it really seems to come from the engine. 

  

Thanks 

Sylvain April 

  

  

  

EnvoyÃ© Ã  partir de  Courrier pour Windows

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richard.goode(at)russiana
Guest

Posted: Thu Sep 29, 2022 7:19 am Post subject: M14P sound during flight.

I would be confident that this is a propeller balancing issue â€“ MT props are always well balanced during manufacture, but this is only static balance, and once a propeller is mounted on an engine, then you really do need to do a dynamic balance with the proper equipment â€“ which is widely available, particularly with people maintaining helicopters. Richard.

 

 

RICHARD GOODE AEROBATICS

Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK

Tel:  +44 (0)1544 340120   Fax:  +44 (0)1544 340129

e-mail: richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)

www.russianaeros.com

WORLD LEADERS IN SOVIET & CHINESE RADIAL AIRCRAFT ENGINES

In partnership with Aerometal Kft, Hungary.



 

From: owner-m14pengines-list-server(at)matronics.com <owner-m14pengines-list-server(at)matronics.com> On Behalf Of Sylvain April

Sent: 28 September 2022 19:36

To: m14pengines-list(at)matronics.com

Subject: M14P sound during flight.

 

Hi all,

 

I need your experience on the M14P. I am flying a Murphy Moose with a M14P 400HP engine spinning a MTV9 propeller.The airplane is on amphib floats.

 

The engine runs OK with all the parameters in the green. But the engine make an unusual noise when we are in flight, it makes a kind of RAA_ RAA_ RAA  with a period of about 2 seconds. At 1840 RPM it is very noticable at 2000 RPM it is louder, this noise can also be felt as a vibration in the floor of the airplane. The prop check OK no loose blade or damage, it perform normally, The RPM is constant no variation seen on an 3 1/8â€™â€™ analog gauge. We can not find anything loose on the airplane, The cowling is solid, the float guide wire are tight.

 

Any idea what can cause this noise, it really seems to come from the engine.

 

Thanks

Sylvain April

 

 

 

EnvoyÃ© Ã  partir de Courrier pour Windows

- The Matronics M14PEngines-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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wamflight(at)gmail.com
Guest

Posted: Thu Sep 29, 2022 10:18 am Post subject: M14P sound during flight.

What king did you buy and where did you mount it?



 	  Quote: 	
		  On Sep 29, 2022, at 10:36 AM, Mark Pennington <pennington.construction.inc.1(at)gmail.com> wrote:



ï»¿I had a â€œHarmonicâ€ on my M14P.   

I purchased a prop balancer and after completing the balance the engine runs very smoothly at any RPM above a slow idle. 

Mark

N621CJ. 



On Thu, Sep 29, 2022 at 11:23 AM Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:



 	  Quote: 	
		   

I would be confident that this is a propeller balancing issue â€“ MT props are always well balanced during manufacture, but this is only static balance, and once a propeller is mounted on an engine, then you really do need to do a dynamic balance with the proper equipment â€“ which is widely available, particularly with people maintaining helicopters. Richard.

 

 

RICHARD GOODE AEROBATICS

Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK

Tel:  +44 (0)1544 340120   Fax:  +44 (0)1544 340129

e-mail: richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)

www.russianaeros.com

WORLD LEADERS IN SOVIET & CHINESE RADIAL AIRCRAFT ENGINES

In partnership with Aerometal Kft, Hungary.



 

From: owner-m14pengines-list-server(at)matronics.com (owner-m14pengines-list-server(at)matronics.com) <owner-m14pengines-list-server(at)matronics.com (owner-m14pengines-list-server(at)matronics.com)> On Behalf Of Sylvain April

Sent: 28 September 2022 19:36

To: m14pengines-list(at)matronics.com (m14pengines-list(at)matronics.com)

Subject: M14P sound during flight.

 

Hi all,

 

I need your experience on the M14P. I am flying a Murphy Moose with a M14P 400HP engine spinning a MTV9 propeller.The airplane is on amphib floats.

 

The engine runs OK with all the parameters in the green. But the engine make an unusual noise when we are in flight, it makes a kind of RAA_ RAA_ RAA  with a period of about 2 seconds. At 1840 RPM it is very noticable at 2000 RPM it is louder, this noise can also be felt as a vibration in the floor of the airplane. The prop check OK no loose blade or damage, it perform normally, The RPM is constant no variation seen on an 3 1/8â€™â€™ analog gauge. We can not find anything loose on the airplane, The cowling is solid, the float guide wire are tight.

 

Any idea what can cause this noise, it really seems to come from the engine.

 

Thanks

Sylvain April

 

 

 

EnvoyÃ© Ã  partir de Courrier pour Windows

 



	




-- 

Replied from my iPhone.  Please excuse any typos in the content

- The Matronics M14PEngines-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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wamflight(at)gmail.com
Guest

Posted: Thu Sep 29, 2022 10:31 am Post subject: M14P sound during flight.

Thatâ€™s the one Iâ€™m looking at. Send pix.

Thank u Mark.

Bill



 	  Quote: 	
		  On Sep 29, 2022, at 1:29 PM, Mark Pennington <pennington.construction.inc.1(at)gmail.com> wrote:



ï»¿I purchased a Dynavibe.   

I have photos of the placement of the sensors. 





If you go that direction.  I can tell you how I did mine. 

Mark



On Thu, Sep 29, 2022 at 2:21 PM Bill <wamflight(at)gmail.com (wamflight(at)gmail.com)> wrote:



 	  Quote: 	
		  

What king did you buy and where did you mount it?



 	  Quote: 	
		  On Sep 29, 2022, at 10:36 AM, Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:



ï»¿I had a â€œHarmonicâ€ on my M14P.   

I purchased a prop balancer and after completing the balance the engine runs very smoothly at any RPM above a slow idle. 

Mark

N621CJ. 



On Thu, Sep 29, 2022 at 11:23 AM Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:



 	  Quote: 	
		   

I would be confident that this is a propeller balancing issue â€“ MT props are always well balanced during manufacture, but this is only static balance, and once a propeller is mounted on an engine, then you really do need to do a dynamic balance with the proper equipment â€“ which is widely available, particularly with people maintaining helicopters. Richard.

 

 

RICHARD GOODE AEROBATICS

Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK

Tel:  +44 (0)1544 340120   Fax:  +44 (0)1544 340129

e-mail: richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)

www.russianaeros.com

WORLD LEADERS IN SOVIET & CHINESE RADIAL AIRCRAFT ENGINES

In partnership with Aerometal Kft, Hungary.



 

From: owner-m14pengines-list-server(at)matronics.com (owner-m14pengines-list-server(at)matronics.com) <owner-m14pengines-list-server(at)matronics.com (owner-m14pengines-list-server(at)matronics.com)> On Behalf Of Sylvain April

Sent: 28 September 2022 19:36

To: m14pengines-list(at)matronics.com (m14pengines-list(at)matronics.com)

Subject: M14P sound during flight.

 

Hi all,

 

I need your experience on the M14P. I am flying a Murphy Moose with a M14P 400HP engine spinning a MTV9 propeller.The airplane is on amphib floats.

 

The engine runs OK with all the parameters in the green. But the engine make an unusual noise when we are in flight, it makes a kind of RAA_ RAA_ RAA  with a period of about 2 seconds. At 1840 RPM it is very noticable at 2000 RPM it is louder, this noise can also be felt as a vibration in the floor of the airplane. The prop check OK no loose blade or damage, it perform normally, The RPM is constant no variation seen on an 3 1/8â€™â€™ analog gauge. We can not find anything loose on the airplane, The cowling is solid, the float guide wire are tight.

 

Any idea what can cause this noise, it really seems to come from the engine.

 

Thanks

Sylvain April

 

 

 

EnvoyÃ© Ã  partir de Courrier pour Windows

 



	


	


 	  Quote: 	
		   	  Quote: 	
		  





	




-- 

Replied from my iPhone.  Please excuse any typos in the content 

 

	


	




-- 

Replied from my iPhone.  Please excuse any typos in the content

- The Matronics M14PEngines-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?M14PEngines-List

Vinnie

Joined: 19 Aug 2019
Posts: 4

Posted: Thu Sep 29, 2022 10:31 am Post subject: M14P sound during flight.

Mark

I have an MT prop on my YAK50, how and where did you mount the balance weights?

AnthonyÂ 

On Thu, Sep 29, 2022 at 14:29 Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:



 	  Quote: 	
		  I purchased a Dynavibe. Â Â 

I have photos of the placement of the sensors.Â 





If you go that direction.Â  I can tell you how I did mine.Â 

Mark



On Thu, Sep 29, 2022 at 2:21 PM Bill <wamflight(at)gmail.com (wamflight(at)gmail.com)> wrote:



 	  Quote: 	
		  

What king did you buy and where did you mount it?



 	  Quote: 	
		  On Sep 29, 2022, at 10:36 AM, Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:



ï»¿I had a â€œHarmonicâ€ on my M14P. Â Â 

I purchased a prop balancer and after completing the balance the engine runs very smoothly at any RPM above a slow idle.Â 

Mark

N621CJ.Â 



On Thu, Sep 29, 2022 at 11:23 AM Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:



 	  Quote: 	
		   

I would be confident that this is a propeller balancing issue â€“ MT props are always well balanced during manufacture, but this is only static balance, and once a propeller is mounted on an engine, then you really do need to do a dynamic balance with the proper equipment â€“ which is widely available, particularly with people maintaining helicopters. Richard.

Â 

Â 

RICHARD GOODE AEROBATICS

Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK

Tel:Â  +44 (0)1544 340120Â Â  Fax:Â  +44 (0)1544 340129

e-mail: richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)

www.russianaeros.com

WORLD LEADERS IN SOVIET & CHINESE RADIAL AIRCRAFT ENGINES

In partnership with Aerometal Kft, Hungary.



Â 

From: owner-m14pengines-list-server(at)matronics.com (owner-m14pengines-list-server(at)matronics.com) <owner-m14pengines-list-server(at)matronics.com (owner-m14pengines-list-server(at)matronics.com)> On Behalf Of Sylvain April

Sent: 28 September 2022 19:36

To: m14pengines-list(at)matronics.com (m14pengines-list(at)matronics.com)

Subject: M14P sound during flight.

Â 

Hi all,

Â 

I need your experience on the M14P. I am flying a Murphy Moose with a M14P 400HP engine spinning a MTV9 propeller.The airplane is on amphib floats.

Â 

The engine runs OK with all the parameters in the green. But the engine make an unusual noise when we are in flight, it makes a kind of RAA_ RAA_ RAA Â with a period of about 2 seconds. At 1840 RPM it is very noticable at 2000 RPM it is louder, this noise can also be felt as a vibration in the floor of the airplane. The prop check OK no loose blade or damage, it perform normally, The RPM is constant no variation seen on an 3 1/8â€™â€™ analog gauge. We can not find anything loose on the airplane, The cowling is solid, the float guide wire are tight.

Â 

Any idea what can cause this noise, it really seems to come from the engine.

Â 

Thanks

Sylvain April

Â 

Â 

Â 

EnvoyÃ© Ã  partir de Courrier pour Windows

Â 



	


	


	




 	  Quote: 	
		   	  Quote: 	
		   	  Quote: 	
		  





	




-- 

Replied from my iPhone.  Please excuse any typos in the content 

 

	


	




-- 

Replied from my iPhone.  Please excuse any typos in the content

- The Matronics M14PEngines-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

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Vinnie

Joined: 19 Aug 2019
Posts: 4

Posted: Thu Sep 29, 2022 10:43 am Post subject: M14P sound during flight.

Thanks I fighters that, just wanted to check, thanks again.Â 

AnthonyÂ 



On Thu, Sep 29, 2022 at 14:41 Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:



 	  Quote: 	
		  Anthony

I have a 20 inch spinner.Â  The weights are bolted to the spinner backing plate. Â 



On Thu, Sep 29, 2022 at 2:34 PM Anthony Spence <antspence62(at)gmail.com (antspence62(at)gmail.com)> wrote:



 	  Quote: 	
		  Mark

I have an MT prop on my YAK50, how and where did you mount the balance weights?

AnthonyÂ 

On Thu, Sep 29, 2022 at 14:29 Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:



 	  Quote: 	
		  I purchased a Dynavibe. Â Â 

I have photos of the placement of the sensors.Â 





If you go that direction.Â  I can tell you how I did mine.Â 

Mark



On Thu, Sep 29, 2022 at 2:21 PM Bill <wamflight(at)gmail.com (wamflight(at)gmail.com)> wrote:



 	  Quote: 	
		  

What king did you buy and where did you mount it?



 	  Quote: 	
		  On Sep 29, 2022, at 10:36 AM, Mark Pennington <pennington.construction.inc.1(at)gmail.com (pennington.construction.inc.1(at)gmail.com)> wrote:



ï»¿I had a â€œHarmonicâ€ on my M14P. Â Â 

I purchased a prop balancer and after completing the balance the engine runs very smoothly at any RPM above a slow idle.Â 

Mark

N621CJ.Â 



On Thu, Sep 29, 2022 at 11:23 AM Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:



 	  Quote: 	
		   

I would be confident that this is a propeller balancing issue â€“ MT props are always well balanced during manufacture, but this is only static balance, and once a propeller is mounted on an engine, then you really do need to do a dynamic balance with the proper equipment â€“ which is widely available, particularly with people maintaining helicopters. Richard.

Â 

Â 

RICHARD GOODE AEROBATICS

Rhodds Farm, Lyonshall, Hereford, HR5 3LW, UK

Tel:Â  +44 (0)1544 340120Â Â  Fax:Â  +44 (0)1544 340129

e-mail: richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)

www.russianaeros.com

WORLD LEADERS IN SOVIET & CHINESE RADIAL AIRCRAFT ENGINES

In partnership with Aerometal Kft, Hungary.



Â 

From: owner-m14pengines-list-server(at)matronics.com (owner-m14pengines-list-server(at)matronics.com) <owner-m14pengines-list-server(at)matronics.com (owner-m14pengines-list-server(at)matronics.com)> On Behalf Of Sylvain April

Sent: 28 September 2022 19:36

To: m14pengines-list(at)matronics.com (m14pengines-list(at)matronics.com)

Subject: M14P sound during flight.

Â 

Hi all,

Â 

I need your experience on the M14P. I am flying a Murphy Moose with a M14P 400HP engine spinning a MTV9 propeller.The airplane is on amphib floats.

Â 

The engine runs OK with all the parameters in the green. But the engine make an unusual noise when we are in flight, it makes a kind of RAA_ RAA_ RAA Â with a period of about 2 seconds. At 1840 RPM it is very noticable at 2000 RPM it is louder, this noise can also be felt as a vibration in the floor of the airplane. The prop check OK no loose blade or damage, it perform normally, The RPM is constant no variation seen on an 3 1/8â€™â€™ analog gauge. We can not find anything loose on the airplane, The cowling is solid, the float guide wire are tight.

Â 

Any idea what can cause this noise, it really seems to come from the engine.

Â 

Thanks

Sylvain April

Â 

Â 

Â 

EnvoyÃ© Ã  partir de Courrier pour Windows

Â 



	


	


	




	




 	  Quote: 	
		   	  Quote: 	
		   	  Quote: 	
		   	  Quote: 	
		  





	




-- 

Replied from my iPhone.  Please excuse any typos in the content 



	


	




	




	




 	  Quote: 	
		   	  Quote: 	
		   	  Quote: 	
		   	  Quote: 	
		   

	


	




-- 

Replied from my iPhone.  Please excuse any typos in the content 

 	




 	




-- 

Replied from my iPhone.  Please excuse any typos in the content

- The Matronics M14PEngines-List Email Forum -

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