Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

LOM shut down

Matronics Email Lists Forum Index -> Lom-List

View previous topic :: View next topic

Author Message

bobf(at)feldtman.com
Guest

Posted: Fri Apr 03, 2009 4:41 am Post subject: LOM shut down

I follow "the book" printed by LOM and shut down my LOM on the glastar with the ignition. I always worry about a P lead problem and stand clear of the prop when turning it through... I have shut down by cutting gas valve OFF and letting engine die of fuel starvation. I note it is a little hard to start later cause the fuel pump has no gasoline in it. this was posted on the cozy list below.... how do others shut down their LOM?

 

bobf

Are you trying to get someone killed?  You should NEVER shut down the engine by killing the ignition.  All you need is for a P-lead to break and you've got a hot engine ready to fire up as soon as someone moves the prop.  And P-leads break from something as simple as a bird scouting around for a new nesting place.  

Folks - if I'm out of line, just let me know and I'll graciously back off, but this sounds like a tragedy waiting to happen.  

Phil Kriley  

Cozy Mk IV Plans 1460 

  [quote][b]

- The Matronics Lom-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?Lom-List

sbeaver(at)columbus.rr.co
Guest

Posted: Fri Apr 03, 2009 5:24 am Post subject: LOM shut down

Oh please.



Rule number one: Follow the manufacturer¹s instructions. The LOM family of

engines, and the ubiquitous ³Russian² radials M14, ASH11 etc are all

certified engines throughout most of the world, which means that the engines

and the operating handbooks have been certified as being suitable and safe.

They all of them have automatic mixture controls and are all shut down with

the mag switch.



They also all of them use some form of electrical spark enhancement/timing

system (variations on the shower of sparks) to help them start, and have

magnetos that are reluctant to make enough spark when it is not being

employed.



It IS possible to start and engine without these, and it has happened, but

anyone who has tried to start an LOM or M14 with the buzzer out of

commission will know that it is a lot harder to do that on an engine with

impulse mags.



The fact that the engine stops when the mags are turned off indicates that

the P leads are functional. The chance of them failing after that AND of

someone swinging the prop AND of the engine deciding that despite having no

ignition retard or shower of sparks it WILL start is IMHO, minimal.



Yes you could claim that ANY risk is unacceptable in aviation, but the only

way to embrace that philosophy is to lock the hangar and throw away the key.

 

It is for each of us to decide what the risk threshold is and act

accordingly. Let's not get our panties in a knot because someone else's

threshold is different to our own.



Steve



On 4/3/09 8:41 AM, "Robert Feldtman" <bobf(at)feldtman.com> wrote:



 	  Quote: 	
		   I follow "the book" printed by LOM and shut down my LOM on the glastar with

 the ignition. I always worry about a P lead problem and stand clear of the

 prop when turning it through... I have shut down by cutting gas valve OFF and

 letting engine die of fuel starvation. I note it is a little hard to start

 later cause the fuel pump has no gasoline in it. this was posted on the cozy

 list below.... how do others shut down their LOM?

 

 bobf

 

 

 Are you trying to get someone killed?  You should NEVER shut down the engine

 by killing the ignition.  All you need is for a P-lead to break and you've got

 a hot engine ready to fire up as soon as someone moves the prop.  And P-leads

 break from something as simple as a bird scouting around for a new nesting

 place.

 

 Folks - if I'm out of line, just let me know and I'll graciously back off, but

 this sounds like a tragedy waiting to happen.

 

 Phil Kriley 

 Cozy Mk IV Plans 1460

- The Matronics Lom-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?Lom-List

jeayers1(at)aol.com
Guest

Posted: Fri Apr 03, 2009 8:19 am Post subject: LOM shut down

The LOM book says: shut down by switching off the ignition.

 

 There is no mixture cut off in the LOM engine controls.  In fact, some LOM models don't have any mixture control in the cockpit.

 

 I have an electric pump between the fuel selector and the mechanical engine pump.  The only thing it is good for is to pressurize the fuel system before the engine start,  Kind of a bandaid.

 

 The primer pump system is still required.

 

 I hope this helps.

 

 Jim Ayers

 RV-3 LOM M332A modified with automatic mixture control unit.

 

 

 --

- The Matronics Lom-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?Lom-List

bobf(at)feldtman.com
Guest

Posted: Sat Apr 04, 2009 2:43 pm Post subject: LOM shut down

great feed back. thanks - and I will continue to follow the book!

bobf



On Fri, Apr 3, 2009 at 7:41 AM, Robert Feldtman <bobf(at)feldtman.com (bobf(at)feldtman.com)> wrote:

 [quote]I follow "the book" printed by LOM and shut down my LOM on the glastar with the ignition. I always worry about a P lead problem and stand clear of the prop when turning it through... I have shut down by cutting gas valve OFF and letting engine die of fuel starvation. I note it is a little hard to start later cause the fuel pump has no gasoline in it. this was posted on the cozy list below.... how do others shut down their LOM?

  

bobf

Are you trying to get someone killed?  You should NEVER shut down the engine by killing the ignition.  All you need is for a P-lead to break and you've got a hot engine ready to fire up as soon as someone moves the prop.  And P-leads break from something as simple as a bird scouting around for a new nesting place.  

Folks - if I'm out of line, just let me know and I'll graciously back off, but this sounds like a tragedy waiting to happen.  

Phil Kriley  

Cozy Mk IV Plans 1460 

   	  Quote: 	
		  



et="_blank">http://www.matronics.com/Navigator?Lom-List

tp://forums.matronics.com

_blank">http://www.matronics.com/contribution



	
[b]

- The Matronics Lom-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?Lom-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Lom-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum