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10-06-2017, 07:03 PM
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Join Date: Jun 2014
Location: Lemoore (Fresno), CA
Posts: 132
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Dual P-MAG Reliability in 2017
Hello all,
So the RV-8 I just purchased has the LASAR ignition system, and unfortunately the slick mags it uses are just about to the point where they need to be overhauled. Instead of paying to overhaul the one off mags, I?m debating replacing the LASAR system. I?ve priced out 3 options.
2 Slick Mags - $2500
2 P-MAG?s - $3200
G3I Ignition - $4600
The airplane currently has an auxiliary battery, but I like an ignition that isn?t reliant on ships power, so those are my 3 options.
I like the idea of the P-MAG?s the best, but have been unable to on find any data on reliability of the new, v40 firmware, latest version of the hardware P-MAG?s. I also think the P-MAG would be the most straightforward install given the LASAR setup I would be removing already has a Manifold Pressure Line etc.
What are your thoughts?
__________________
Evan Levesque
RV-8 N88MJ (Built by Michael Robbins)
Lemoore, CA
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10-06-2017, 07:43 PM
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Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 2,596
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RV-8A with 700 hours on a dual pMag install. Performace has been flawless.
Carl
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10-06-2017, 07:57 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,256
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We went through this same thing here a couple of weeks ago. As usual, a long thread.... search for Pmag.
__________________
Paul F. Dye
Editor at Large - 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)
http://Ironflight.com
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10-06-2017, 07:59 PM
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Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,351
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I had two PMAGs in my RV7A and I was running v40 which ran flawlessly for the 150 hours that I had installed the PMAGs. The installation and timing of PMAG is super easy. I saw about a gallon of fuel saving (for the same speed) up high and about .8 of a gallon of saving when I had only one PMAG.
I definitely recommend it.
__________________
Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
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10-06-2017, 08:10 PM
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Join Date: Jun 2005
Location: Cypress TX
Posts: 120
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Pmags
Been running dual p-mags since first flight in 2008, flawless performance, would definately do the same again.
__________________
Jim K
Cypress, TX (T51)
RV 7A-
O-360-Dual P mags-GRT EFIS-Tru-Trak AutoPilot
Flying as of 9/7/08
Finally painted 2/8/13
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10-06-2017, 08:49 PM
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Join Date: Jun 2014
Location: Lemoore (Fresno), CA
Posts: 132
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Quote:
Originally Posted by Ironflight
We went through this same thing here a couple of weeks ago. As usual, a long thread.... search for Pmag.
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I did a search, but wasn't able to find a good quantity of data from 2017. Most posts are with issues that folks were having in 2012-2015. My main curiosity is if all the teething issues with the P-MAG's have been fixed and if the system is reliable enough to use without a backup system in place other than an auxiliary battery.
__________________
Evan Levesque
RV-8 N88MJ (Built by Michael Robbins)
Lemoore, CA
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10-06-2017, 10:17 PM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,652
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Quote:
Originally Posted by RhinoDrvr
Hello all,
...What are your thoughts?
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You have a second battery already?
No contest: SDS CPI
__________________
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.
Michael Robinson
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Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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10-06-2017, 10:27 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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Like any thing else, a few units will suffer infant mortality, but for the most part, they are bullet proof.
Just make sure to install them per the manual.
Depending on the engine you are running, you may have to tune them to match the manufacturer's recommended timing. This is fairly easy to do.
Check your email.
__________________
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
www.repucci.com/bill/baf.html
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10-06-2017, 10:42 PM
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Join Date: Jun 2014
Location: Lemoore (Fresno), CA
Posts: 132
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Quote:
Originally Posted by Toobuilder
You have a second battery already?
No contest: SDS CPI
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This sounds really dumb, but....
The control panel is hideous and I don't want it on my panel. If it could be integrated into a panel that looked more like something that belonged in an airplane I would be more interested.
The airplane currently has a really neat, well laid out steam gauge IFR panel, and I don't want to ruin that with the incredible hulk of engine monitors.
__________________
Evan Levesque
RV-8 N88MJ (Built by Michael Robbins)
Lemoore, CA
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10-07-2017, 08:38 AM
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Join Date: Jul 2009
Location: Mojave
Posts: 4,652
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Indeed the current gen CPI brains are "unsightly", but there is no need to have them in the panel. They can be hidden once programmed.
__________________
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.
Michael Robinson
______________
Harmon Rocket II -SDS EFI
RV-8 - SDS CPI
1940 Taylorcraft BL-65
1984 L39C
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