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wlannon(at)shaw.ca
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richard.goode(at)russiana
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 Posted: Mon Feb 13, 2017 4:48 am Post subject: M14P questions. |
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They used to be a good story circulating in Russia that the plate on the gearbox was for a military version of the engine, to provide an interrupter mechanism to enable a machine gun to be fired through the propeller. And, of course, a single-seat version of the 52 was built with rocket-launchers. However, the real story is more prosaic, in that a development of the engine was intended with a TBO of 1000 hours, and it was intended to put a mechanically operated centrifugal oil filter mounted on the gearbox. There is a similar system on the much larger ASh-62 engine.
In terms of the fining, the theory was slightly smaller fins but at a better angle for airflow and thus cooling.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Walter Lannon
Sent: 13 February 2017 04:46
To: yak-list(at)matronics.com
Subject: M14P questions.
A couple of questions for the M14P experts on the list. Doing some work on a Series 2 engine and mystified by a couple of changes
from the earlier model. Can anyone enlighten me?
1. What is the purpose of the large access port in the LH side of the nose case.
2. Significant changes to cylinder fin design. Presumably to improve cooling efficiency yet appears to reduce rather than increase cooling area.
Many thanks;
Walt
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cjpilot710(at)aol.com
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| Posted: Mon Feb 13, 2017 6:01 am Post subject: M14P questions. |
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The engine was used in helicopters, was it not? I was under the impression that was for mounting a gear box for a tail rotor shaft. Or would that require a much heaver and different nose section?
Jim "Pappy" Goolsby
In a message dated 2/13/2017 7:49:25 A.M. Eastern Standard Time, richard.goode(at)russianaeros.com writes:
| Quote: |
They used to be a good story circulating in Russia that the plate on the gearbox was for a military version of the engine, to provide an interrupter mechanism to enable a machine gun to be fired through the propeller. And, of course, a single-seat version of the 52 was built with rocket-launchers. However, the real story is more prosaic, in that a development of the engine was intended with a TBO of 1000 hours, and it was intended to put a mechanically operated centrifugal oil filter mounted on the gearbox. There is a similar system on the much larger ASh-62 engine.
In terms of the fining, the theory was slightly smaller fins but at a better angle for airflow and thus cooling.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Walter Lannon
Sent: 13 February 2017 04:46
To: yak-list(at)matronics.com
Subject: M14P questions.
A couple of questions for the M14P experts on the list. Doing some work on a Series 2 engine and mystified by a couple of changes
from the earlier model. Can anyone enlighten me?
1. What is the purpose of the large access port in the LH side of the nose case.
2. Significant changes to cylinder fin design. Presumably to improve cooling efficiency yet appears to reduce rather than increase cooling area.
Many thanks;
Walt
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richard.goode(at)russiana
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| Posted: Mon Feb 13, 2017 6:33 am Post subject: M14P questions. |
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That engine is called the M 14 V. The power section and supercharger "pyramid" are the same, although with some differences – for example the supercharger is driven through a slipper clutch since the helicopter engine rpm can vary very quickly when not under load. But the gearbox is a large unit, giving a right-angled drive. There is only one drive, and a subsequent gearbox separates main and tail rotors. Of course the main use of the engine was in the Kamov 26 where each engine drove one of a pair of co-axial rotors, so no need for a tail rotor.
If you look at our website under "engines" you can see a special M 14 V that we made as a "cut-away" to show the internal construction. However the gearbox output is on the other side of the photograph so not so obvious, but you can see the very substantial gears driving it.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of cjpilot710(at)aol.com
Sent: 13 February 2017 14:01
To: yak-list(at)matronics.com
Subject: Re: M14P questions.
The engine was used in helicopters, was it not? I was under the impression that was for mounting a gear box for a tail rotor shaft. Or would that require a much heaver and different nose section?
Jim "Pappy" Goolsby
In a message dated 2/13/2017 7:49:25 A.M. Eastern Standard Time, richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com) writes:
| Quote: |
They used to be a good story circulating in Russia that the plate on the gearbox was for a military version of the engine, to provide an interrupter mechanism to enable a machine gun to be fired through the propeller. And, of course, a single-seat version of the 52 was built with rocket-launchers. However, the real story is more prosaic, in that a development of the engine was intended with a TBO of 1000 hours, and it was intended to put a mechanically operated centrifugal oil filter mounted on the gearbox. There is a similar system on the much larger ASh-62 engine.
In terms of the fining, the theory was slightly smaller fins but at a better angle for airflow and thus cooling.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] On Behalf Of Walter Lannon
Sent: 13 February 2017 04:46
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: M14P questions.
A couple of questions for the M14P experts on the list. Doing some work on a Series 2 engine and mystified by a couple of changes
from the earlier model. Can anyone enlighten me?
1. What is the purpose of the large access port in the LH side of the nose case.
2. Significant changes to cylinder fin design. Presumably to improve cooling efficiency yet appears to reduce rather than increase cooling area.
Many thanks;
Walt
This email has been checked for viruses by Avast antivirus software.
www.avast.com
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This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
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This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
| | - The Matronics Yak-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?Yak-List |
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GeorgeCoy
Joined: 02 Dec 2010
Posts: 310
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| Posted: Mon Feb 13, 2017 8:58 am Post subject: M14P questions. |
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As I understand the Series II nose case cover was originally intended for a centrifugal oil filter, The fins were changed for improved cooling.
George
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Walter Lannon
Sent: Sunday, February 12, 2017 11:46 PM
To: yak-list(at)matronics.com
Subject: M14P questions.
A couple of questions for the M14P experts on the list. Doing some work on a Series 2 engine and mystified by a couple of changes
from the earlier model. Can anyone enlighten me?
1. What is the purpose of the large access port in the LH side of the nose case.
2. Significant changes to cylinder fin design. Presumably to improve cooling efficiency yet appears to reduce rather than increase cooling area.
Many thanks;
Walt
This email has been checked for viruses by Avast antivirus software.
www.avast.com
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wlannon(at)shaw.ca
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| Posted: Mon Feb 13, 2017 10:58 am Post subject: M14P questions. |
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Thanks to all for the info.
Cheers;
Walt
From: George S. Coy (george.coy(at)gmail.com)
Sent: Monday, February 13, 2017 8:58 AM
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: RE: M14P questions.
As I understand the Series II nose case cover was originally intended for a centrifugal oil filter, The fins were changed for improved cooling.
George
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Walter Lannon
Sent: Sunday, February 12, 2017 11:46 PM
To: yak-list(at)matronics.com
Subject: M14P questions.
A couple of questions for the M14P experts on the list. Doing some work on a Series 2 engine and mystified by a couple of changes
from the earlier model. Can anyone enlighten me?
1. What is the purpose of the large access port in the LH side of the nose case.
2. Significant changes to cylinder fin design. Presumably to improve cooling efficiency yet appears to reduce rather than increase cooling area.
Many thanks;
Walt
This email has been checked for viruses by Avast antivirus software.
www.avast.com
This email has been checked for viruses by Avast antivirus software.
www.avast.com
| | - The Matronics Yak-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?Yak-List |
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Viperdoc
Joined: 19 Apr 2014
Posts: 484
Location: 08A
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| Posted: Mon Feb 13, 2017 6:03 pm Post subject: M14P questions. |
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The large port on the nose case was for an electric starter.
Series two cylinders have varying length fins for better cooling as I understand. They are apparently interchangeable since I have seen engines with a mix. Well maybe the assembler in St. Elsewhere was cheap and lazy.
Doc
Sent from my iPad
On Feb 12, 2017, at 10:45 PM, Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: | A couple of questions for the M14P experts on the list. Doing some work on a Series 2 engine and mystified by a couple of changes
from the earlier model. Can anyone enlighten me?
1. What is the purpose of the large access port in the LH side of the nose case.
2. Significant changes to cylinder fin design. Presumably to improve cooling efficiency yet appears to reduce rather than increase cooling area.
Many thanks;
Walt
This email has been checked for viruses by Avast antivirus software.
www.avast.com
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| | - The Matronics Yak-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?Yak-List |
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richard.goode(at)russiana
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| Posted: Tue Feb 14, 2017 12:25 am Post subject: M14P questions. |
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Not true! As I wrote before, the port is for an intended modification for a centrifugal oil filter. But the more recent electric start conversion uses the mountings for the port, simply because they are convenient and in the right place.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel:Â +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com [mailto:owner-yak-list-server(at)matronics.com] On Behalf Of Roger Kemp
Sent: 14 February 2017 01:52
To: yak-list(at)matronics.com
Subject: Re: M14P questions.
The large port on the nose case was for an electric starter.
Series two cylinders have varying length fins for better cooling as I understand. They are apparently interchangeable since I have seen engines with a mix. Well maybe the assembler in St. Elsewhere was cheap and lazy.
Doc
Sent from my iPad
On Feb 12, 2017, at 10:45 PM, Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: |
A couple of questions for the M14P experts on the list. Doing some work on a Series 2 engine and mystified by a couple of changes
from the earlier model. Can anyone enlighten me?
1. What is the purpose of the large access port in the LH side of the nose case.
2. Significant changes to cylinder fin design. Presumably to improve cooling efficiency yet appears to reduce rather than increase cooling area.
Many thanks;
Walt
This email has been checked for viruses by Avast antivirus software.
www.avast.com
|
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This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
| | - The Matronics Yak-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?Yak-List |
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HawkerPilot2015
Joined: 10 Jan 2006
Posts: 503
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| Posted: Tue Feb 14, 2017 8:45 am Post subject: Re: M14P questions. |
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I like the gun story...so I am going with that.
| | - The Matronics Yak-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?Yak-List |
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Viperdoc
Joined: 19 Apr 2014
Posts: 484
Location: 08A
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| Posted: Tue Feb 14, 2017 5:20 pm Post subject: M14P questions. |
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Copy Richard. The engines I have seen came with TWs and the Americanized 52W. Was not intending to cast doubt.
Doc
Sent from my iPad
On Feb 14, 2017, at 2:25 AM, Richard Goode <richard.goode(at)russianaeros.com (richard.goode(at)russianaeros.com)> wrote:
| Quote: | v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} <![endif]--> <![endif]--> <![endif]-->
Not true! As I wrote before, the port is for an intended modification for a centrifugal oil filter. But the more recent electric start conversion uses the mountings for the port, simply because they are convenient and in the right place.
Richard Goode Aerobatics
Rhodds Farm
Lyonshall
Hereford
HR5 3LW
Tel: +44 (0) 1544 340120
Fax: +44 (0) 1544 340129
www.russianaeros.com
From: owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com) [mailto:owner-yak-list-server(at)matronics.com (owner-yak-list-server(at)matronics.com)] On Behalf Of Roger Kemp
Sent: 14 February 2017 01:52
To: yak-list(at)matronics.com (yak-list(at)matronics.com)
Subject: Re: M14P questions.
The large port on the nose case was for an electric starter.
Series two cylinders have varying length fins for better cooling as I understand. They are apparently interchangeable since I have seen engines with a mix. Well maybe the assembler in St. Elsewhere was cheap and lazy.
Doc
Sent from my iPad
On Feb 12, 2017, at 10:45 PM, Walter Lannon <wlannon(at)shaw.ca (wlannon(at)shaw.ca)> wrote:
| Quote: |
A couple of questions for the M14P experts on the list. Doing some work on a Series 2 engine and mystified by a couple of changes
from the earlier model. Can anyone enlighten me?
1. What is the purpose of the large access port in the LH side of the nose case.
2. Significant changes to cylinder fin design. Presumably to improve cooling efficiency yet appears to reduce rather than increase cooling area.
Many thanks;
Walt
This email has been checked for viruses by Avast antivirus software.
www.avast.com
|
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
|
| | - The Matronics Yak-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?Yak-List |
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