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Old 09-10-2017, 07:35 PM
Robb Robb is offline
Join Date: Sep 2015
Location: Nevada City Ca
Posts: 128
Default E mag P mag reliability

My 7 has this set up currently. My other planes have always used magnetos for the obvious reasons. My plane has 300 hrs on a new engine and ignition. I have followed the manual during the annuals and have had zero problems. I was just posting the question to see if any other guys have had any serious issues with them. I do see some guys running dual p mags and I may change one of mine to have more safety and redundancy.

Dues paid
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Old 09-10-2017, 07:48 PM
Larry DeCamp's Avatar
Larry DeCamp Larry DeCamp is offline
Join Date: Apr 2010
Location: Clinton, Indiana
Posts: 715
Default pmags @ 125 hr

Mydual pmags have been flawless. There are many others with more hrs than me. But I have noted that my carb 0320 can get a couple of cylinders LOP without protest while taking data. Also, my MP / RPM / %power do not agree with LYC charts. I get 2500 with Catto 2 blade at lower MP than the charts. Could be the prop but Catto recommended for cruise because RV3 takes off short anyway.
Larry DeCamp
RV-3B flying w/ carb & Pmags
RV-4 fastback w/ Superior EXP 0360 /AFP & CPI
Clinton, IN
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Old 09-10-2017, 08:24 PM
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johnbright johnbright is offline
Join Date: Aug 2010
Location: Newport News, Va
Posts: 194
Default Make sure you have V40 firmware!

VAF Thread Link
John Bright, RV-6A 25088, at FWF
O-360, 8.5:1, vert sump, SDSEFI EM-5
Z-14 adapted for EFI, wiring and IP CAD files here
Newport News, Va
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Old 09-10-2017, 08:27 PM
Ironflight's Avatar
Ironflight Ironflight is offline
VAF Moderator / Line Boy
Join Date: Jan 2005
Location: Dayton, NV
Posts: 11,739

Let's see - right now, I've got:

RV-3 - Dual P-Mags - 650 TT, P-Mags went in for four ware upgrade and checkup at about 500 hours - all fine. Had two corroded plug wires that were causing a misfire - replaced them.

RV-8 - Dual P-Mags - 1850 TT, P-Mags went on about 1400 hours, so 450 on them. Had a "fail-to-start" (failed self-test on power-up. Engine started and ran on one P-Mag fine, but caught the problem in the Mag check)on one unit very early on. It was a known issue that they adjusted for, and back on the airplane in a couple of days. Just had them checked up, no issues found, running great!

Dream Tundra - Dual P-Mags - 130 hours TT- No Issues.

P-Mags CAN fail, just like a Mag, or any other EI. EVen duel failures can occur, just like in other systems. I have found reliability to be statistically better (with a very small sample size) as Slick Mags.

Paul F. Dye
Editor in Chief - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)

Last edited by Ironflight : 09-11-2017 at 11:33 AM.
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Old 09-10-2017, 08:40 PM
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Champ Champ is offline
Join Date: Apr 2012
Location: Kingsville, Ontario, Canada
Posts: 225

Maybe not significant but 60 flawless hours so far. Have the V40 firmware.
Dennis Enns
Kingsville, ON
Bellanca Champ 7ACA since 1986, restored 1990.
RV-8 IO375, Hartzell CS, dual PMags.
2019 Donation In
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Old 09-10-2017, 08:46 PM
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N941WR N941WR is offline
Join Date: Jan 2005
Location: SC
Posts: 11,815

The early P-mags had some major issues with both hardware and software.

They are now stable product, at least as stable as traditional mags.

However, it is recommended they be removed every year and inspected. You want to check the gear to make sure it is not gauling (There were some non-certified gears sold which have caused issues.)

Make sure your P-mags are on version 40 and you are good to go.

(I have almost 800 hours behind them and would never consider going to traditional mags!)
Bill R.
RV-9 (Yes, it's a dragon tail)
O-360 w/ dual P-mags
Build the plane you want, not the plane others want you to build!
SC86 - Easley, SC
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Old 09-10-2017, 10:06 PM
Carl Froehlich's Avatar
Carl Froehlich Carl Froehlich is offline
Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 1,816

700+ hours on dual RV-8A pMag install. Flawless.

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Old 09-10-2017, 11:32 PM
jbDC9 jbDC9 is offline
Join Date: Jan 2005
Location: Houston, TX
Posts: 752

1400 hours on my dual 113-series Pmags installed in 2006. The first 200+ hours were pretty painful, numerous issues, but Brad and company got 'em straightened out and they've been trouble free for the last 1200 hours. Just sent them in last month for the V40 upgrades and general checkup, all is well...
John Bixby
RV-8 QB sn 82030 - 1575 hrs
New Waverly, TX

VAF donation Dec 2018
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Old 09-11-2017, 12:14 AM
Captdf Captdf is offline
Join Date: Feb 2014
Location: Cypress, TX
Posts: 13

500 hrs on dual PMags, no problems. Installed and maintained per factory instructions with no maintenance or reliability issues to date.

I'd do the exact same installation again.
Dru Fisher
Cypress TX - KEYQ
RV-4, IO-320
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Old 09-11-2017, 08:56 AM
Robb Robb is offline
Join Date: Sep 2015
Location: Nevada City Ca
Posts: 128

Thanks for the info I will send them in at 500 hrs to have checked out. I think I will change the one e mag to a p just for safety
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