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02-08-2011, 03:33 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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P-mag and high altitudes?
If any of you have flown your P-mags at altitudes where oxygen is required, I have a few questions for you.
How high have you flown them?
How did they run?
Are you using auto plugs?
What is your configuration?
A) Dual E/P-mags
B) OneE/P-mag and one other electronic ignition
C) One E/P-mag and a traditional mag
As always, please add any appropriate comments regarding your experience.
__________________
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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02-08-2011, 09:09 PM
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Join Date: Jan 2005
Location: Santa Rosa, CA
Posts: 216
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Ran fine at 17,500
I had my 8 up to 17,500 about a month ago. I've got a P-mag on the right and a Slick mag on the left. The engine ran just fine and I could have kept climbing even with my new airplane partner in the back seat with his oxygen bottle. I don't remember what our exact weight was. Oh yeah, I'm running with aircraft plugs.
__________________
Craig Schwartz
RV-8 (Flying!), IO-360B1PC2 (180 hp, 1 P-Mag, 1 Slick Mag), Whirlwind 200RV, AF-3500, G496, Digiflight II, Classic Aero Sportsman Ultraleather Seats
N868RV
Santa Rosa, CA
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02-08-2011, 09:18 PM
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Join Date: Jan 2005
Location: MN
Posts: 2,269
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12,500 all day out west
- Emag/Pmag
- Auto plugs
- O-320/Carb
- C/S Prop
Ran like a top.
__________________
Cheers,
Pete
Amateur Plane - RV-9A N789PH - 2350+ Hrs
Amateur Radio - KD0CVN
Doggies Delivered - 25+
St. Paul, MN
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02-08-2011, 09:28 PM
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Join Date: Jan 2005
Location: Chandler, AZ
Posts: 2,901
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17,500
Hi Bill,
Dual Pmags, ECI IO 360, 8.5 to 1, nothing else fancy.
No problem leaning. Power was excellent, temps great. Been at high altitude many times.
__________________
Darwin N. Barrie
Chandler AZ
www.JDair.com
RV-7 N717EE-Flying (Sold)
RV-7 N717AZ Flying, in paint
EMS Bell 407,
Eurocopter 350 A-Star Driver
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02-08-2011, 09:42 PM
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Join Date: Jan 2005
Posts: 768
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our experience
We have been up to 13.5 but more often at 12.5 or 11.5 with no issues noticed in 800 hours of flying with dual pmags, auto plugs in an RV7A.
__________________
Tom Lewis
RV7a N967BT 1900 hrs.
RV10 N143EB 960 hrs.
Granbury, Tx
http://bit.ly/2bnimsZ
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02-08-2011, 10:12 PM
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Join Date: Jul 2006
Location: Corvallis Oregon
Posts: 3,547
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18k
auto plugs
emag/Pmag
8.5:1
LOP
Autofuel with ethanol
Ran fine
Frank
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02-08-2011, 11:32 PM
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Join Date: Jul 2005
Location: Henderson, NV (KBVU)
Posts: 129
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17.5k no problem
Up to 17,500, but lots in 10-15000 range. Same as anywhere else in my experience. LOP Mag checks at 10K no problem.
IO-360
dual PMags with advanced curve
Auto plugs
Seb Trost
RV-7A
Boulder City, NV
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02-09-2011, 07:02 AM
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Join Date: Jul 2009
Location: Stephenville, tx
Posts: 49
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17500 With an O-320 Pmag & slick auto plugs & auto gas. Ran great.
__________________
Robert Couch
RV-9A N459RC
Stephenville Tx
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02-09-2011, 07:41 AM
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Join Date: May 2005
Posts: 377
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Makes a difference
I fly a lot at 11.5-13.5 with absolutely no problems. I currently have dual P-mags with auto plugs on an AEIO-320. However, back when put the first Pmag on my engine I did a little experimentation at altitude. I could turn off the mag and there was no noticable change to the engine. However, when I turned off the Pmag the engine lost about 200 rpm. Also, the dual Pmags improved (decreased) my fuel flow at altitude by about 1 gph.
__________________
Charlie "T.Bear" Guarino
Springtown, TX
RV-4 Flying again with a fresh overhaul
Exempt but paid
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