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P-Mags

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bkbrown(at)ashcreekwirele
Guest

Posted: Sun Apr 09, 2006 7:21 pm Post subject: P-Mags

Great and not so great...

After much trying I fired up the engine for the first time today.   After purging all the lines, I attempted a start.  It took many tries to get the engine fired up, but it finally ran. Once it ran, it ran great...until I tried to test the P-Mags by individually cycling their breakers.  The engine stumbled hard when I switched the right breaker to the off position, but recovered when I switched it back on.  I THINK this indicates that it was not generating it's own power.  When I switched off the left P-Mag, the engine monitor showed an 800 RPM increase, but that was bogus because you could not hear any change at all in the engine.  As called out in the manual, only one ignition is wired to the ACS2000.  All temps were even on CHT/EGT.  While the engine was running, I tested both radios, as the engine monitor showed 13.7V.  After I shut down, both ICOM A-200's went blank.  All other avionics and electronics work fine.  No fuses popped, no burned wires.



I guess it's back to the drawing board and YES, I'm more than a little depressed about it.  I'll call the Emagair boys this week to see what ideas they have.  The P-Mags were installed by the engine builder, and I have not addressed the issue of their timing...but it is disheartening to see that they are apparently not making their own power.



I'll keep the group informed as I stumble through this...



Bob Brown

RV-7A

Wingtips and wing root fairings



do not archive

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fstringham

Joined: 10 Jan 2006
Posts: 87

Posted: Mon Apr 10, 2006 5:25 am Post subject: P-Mags

Bob



Very interesting info as I too am going the p-mag route. I have no idea as 

to the problem but look forward to your solution.



As a side note I am about to start the dreaded canopy (tip up). Any advice 

out there. At least say a little prayer for .................



Frank (at) SGU and SLC

 	  Quote: 	
		  From: "Karen and Robert Brown" <bkbrown(at)ashcreekwireless.com>

Reply-To: rv-list(at)matronics.com

To: <rv-list(at)matronics.com>

Subject: P-Mags

Date: Sun, 9 Apr 2006 20:16:33 -0700




<bkbrown(at)ashcreekwireless.com>



Great and not so great...

After much trying I fired up the engine for the first time today.   After 

purging all the lines, I attempted a start.  It took many tries to get the 

engine fired up, but it finally ran. Once it ran, it ran great...until I 

tried to test the P-Mags by individually cycling their breakers.  The 

engine stumbled hard when I switched the right breaker to the off position, 

but recovered when I switched it back on.  I THINK this indicates that it 

was not generating it's own power.  When I switched off the left P-Mag, the 

engine monitor showed an 800 RPM increase, but that was bogus because you 

could not hear any change at all in the engine.  As called out in the 

manual, only one ignition is wired to the ACS2000.  All temps were even on 

CHT/EGT.  While the engine was running, I tested both radios, as the engine 

monitor showed 13.7V.  After I shut down, both ICOM A-200's went blank.  

All other avionics and electronics work fine.  No fuses popped, no burned 

wires.



I guess it's back to the drawing board and YES, I'm more than a little 

depressed about it.  I'll call the Emagair boys this week to see what ideas 

they have.  The P-Mags were installed by the engine builder, and I have not 

addressed the issue of their timing...but it is disheartening to see that 

they are apparently not making their own power.



I'll keep the group informed as I stumble through this...



Bob Brown

RV-7A

Wingtips and wing root fairings



do not archive

- The Matronics RV-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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sportav8r(at)aol.com
Guest

Posted: Mon Apr 10, 2006 5:44 am Post subject: P-Mags

Pmags will not self-power below about 900 rpm.  Also, there is a chance that your Pmag/engine monitor combo will read 2x actual rpm in self-powered mode; mine does this and I hope to make it go away by resetting the mag to another dipswitch seting and reprogramming my GRT engine monitor to expect twice the # of pulses.  I bet they have addressed this on their latest model.  The tribulations of being an early-adopter 

 

Wait till you experience the in-flight stumble that the heavier-gauge B+ wire is supposed to fix (or new firmware; your choice 

 

-Bill B

RV-6A O-320 dual p-mags/auto plugs 

 

--

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Bob Barrow

Joined: 11 Jan 2006
Posts: 29

Posted: Mon Apr 10, 2006 11:30 pm Post subject: P-Mags

Recommend you go to this group with your question.



http://www.matronics.com/listbrowse/aeroelectric-list/index.html



 	  Quote: 	
		  

<bkbrown(at)ashcreekwireless.com>



Great and not so great...

After much trying I fired up the engine for the first time today.   After

purging all the lines, I attempted a start.  It took many tries to get the

engine fired up, but it finally ran. Once it ran, it ran great...until I 

tried

to test the P-Mags by individually cycling their breakers.  The engine 

stumbled

hard when I switched the right breaker to the off position, but recovered 

when I

switched it back on.  I THINK this indicates that it was not generating 

it's own

power.  When I switched off the left P-Mag, the engine monitor showed an 

800 RPM

increase, but that was bogus because you could not hear any change at all 

in the

engine.  As called out in the manual, only one ignition is wired to the 

ACS2000.

All temps were even on CHT/EGT.  While the engine was running, I tested 

both

radios, as the engine monitor showed 13.7V.  After I shut down, both ICOM

A-200's went blank.  All other avionics and electronics work fine.  No 

fuses

popped, no burned wires.



I guess it's back to the drawing board and YES, I'm more than a little 

depressed

about it.  I'll call the Emagair boys this week to see what ideas they 

have.

The P-Mags were installed by the engine builder, and I have not addressed 

the

issue of their timing...but it is disheartening to see that they are 

apparently

not making their own power.



I'll keep the group informed as I stumble through this...



Bob Brown

RV-7A

Wingtips and wing root fairings



do not archive






	


New year, new job  there's more than 100,00 jobs at SEEK 

http://a.ninemsn.com.au/b.aspx?URL=http%3A%2F%2Fninemsn%2Eseek%2Ecom%2Eau&_t=752315885&_r=Jan05_tagline&_m=EXT

- The Matronics RV-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?RV-List

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