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  #1  
Old 12-20-2017, 06:12 AM
pa38112 pa38112 is offline
 
Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 540
Default any P-mag pireps?

I am considering switching from Slick magnetos to P-mags. O-360-A1A with a FP prop. I am mainly interested in improving engine smoothness LOP. The cost savings of the 500hr maintenance on magnetos is a little addition justification. Has anyone done a similar conversion and like to share your impressions?
I am only interested in the P-mags because I don't want to add a redundant electrical system for other electronic ignition options.
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  #2  
Old 12-20-2017, 06:35 AM
Captdf Captdf is offline
 
Join Date: Feb 2014
Location: Cypress, TX
Posts: 8
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4 years on dual Pmags. No problems, great factory support, straightforward install.

I operate LOP probably 75-80 percent of the time with an IO-320 and I can smoothly run as much as 70 degrees LOP.

With a carburetor maybe not so smooth LOP but you’ll still see savings by the ability to use auto plugs, smoother idle, easier starts and maybe a little less fuel burn at altitude ROP.
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  #3  
Old 12-20-2017, 07:18 AM
dweyant dweyant is offline
 
Join Date: Sep 2012
Location: 07TS
Posts: 419
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2.5 years, 330 hours. They work great.

IO-320 CS prop. I run LOP anytime I'm at cruise and burn about 6.2 GPH at 145knots TAS in the 10-14k range.

-Dan
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  #4  
Old 12-20-2017, 07:52 AM
jbDC9 jbDC9 is offline
 
Join Date: Jan 2005
Location: Houston, TX
Posts: 734
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P-Mag reports/pireps? Yep! This question gets asked every other month...

Some light reading;
http://www.vansairforce.com/communit...ghlight=P-mags

http://www.vansairforce.com/communit...ghlight=P-mags
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RV-8 QB sn 82030 - 1500 hrs
O-360-A1D/CS/Pmags
New Waverly, TX

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  #5  
Old 12-20-2017, 08:59 AM
Canadian_JOY Canadian_JOY is offline
 
Join Date: Aug 2007
Location: Ontario, Canada
Posts: 1,589
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One additional PIREP to add to the pile. First flight was on Sunday. 1 impulse-coupled Slick, one P-Mag. No problems. Even EGTs / CHTs across the board at break-in power. Smooth-running.
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  #6  
Old 12-20-2017, 09:15 AM
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Toobuilder Toobuilder is offline
 
Join Date: Jul 2009
Location: Mojave
Posts: 3,884
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Will have a nice pair of trouble free P-mags going on the market just as soon as Ross releases the CPI-2.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

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  #7  
Old 12-20-2017, 09:48 AM
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ChuckGant ChuckGant is offline
 
Join Date: Oct 2015
Location: Collierville, TN (M41)
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We are very happy with our P-Mags. After talking to the owner at Sun-n-Fun (Brad I think?) we switched to automotive spark plugs and saw a real improvement in starting performance, especially when hot. We were also able to run about .5 gal/hr leaner of peak than with the aviation plugs.

We have had no problems with them whatsoever. Highly recommend.
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  #8  
Old 12-20-2017, 11:34 AM
pa38112 pa38112 is offline
 
Join Date: Mar 2008
Location: Clarksboro, NJ
Posts: 540
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Quote:
Originally Posted by jbDC9 View Post
P-Mag reports/pireps? Yep! This question gets asked every other month...

Some light reading;
http://www.vansairforce.com/communit...ghlight=P-mags

http://www.vansairforce.com/communit...ghlight=P-mags
Thank you for the links - very helpful. Do you know why I don't see these when I go to the Electronic Ignition Forum? There are only 4 or 5 post there.
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  #9  
Old 12-20-2017, 11:48 AM
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Ironflight Ironflight is offline
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Join Date: Jan 2005
Location: Dayton, NV
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Quote:
Originally Posted by pa38112 View Post
Thank you for the links - very helpful. Do you know why I don't see these when I go to the Electronic Ignition Forum? There are only 4 or 5 post there.
You need to tell the search engine how far back to look - I think it defaults to 30 days. Set it all the way back, and you'll see way more information!
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RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
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  #10  
Old 12-21-2017, 11:26 AM
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N941WR N941WR is offline
 
Join Date: Jan 2005
Location: SC
Posts: 11,208
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If you install P-mags, be sure to read and understand the manual and then install them accordingly.
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RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
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