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09-26-2011, 09:56 AM
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Join Date: Dec 2005
Location: Ridgecrest, CA
Posts: 429
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EI Combinations
I've reviewed the threads discussing EI vs Mag - don't need to go there. I'm convinced EI is the way to go. My -8A Aerosport IO-360 currently sports an LSI and 1 mag. Single battery -but also have a B&C SD-8 to provide backup power. I want to go to 2 EIs and am debating the architecture.
Because of the self-contained capabilities of the P-Mag, I'm leaning toward 1 LSI and 1 PMag.
Anyone have any comments on the pros/cons of that configuration?
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09-27-2011, 05:56 PM
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Join Date: Dec 2004
Location: Southlake, Texas
Posts: 626
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P-Mags
Sell LSI, Mag, and B&C SD-8 (unless you need it for something else) and buy two P-Mags. You won't look back.
__________________
Danny King
Beautiful Doll 80434 TT 1675 hours
I0360 A1B6 200 HP
Christen Inverted Oil
First Flight 12 July 2000
VAF Dues current for 2020
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09-27-2011, 06:42 PM
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Join Date: Jan 2005
Location: SC
Posts: 12,887
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The two different EI's will fire the plugs at different times due to the timing maps programmed into them.
It is best to get two identical ignitions, be them P-mags or LSi or whatever.
My preference is the P-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
www.repucci.com/bill/baf.html
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09-27-2011, 06:44 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,668
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Just add the second LSI, that's what I did and "have never looked back" 
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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09-27-2011, 11:44 PM
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Join Date: Feb 2006
Location: Redmond Wash
Posts: 96
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Lsi
I agree with Walt.
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09-28-2011, 07:34 AM
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Join Date: Dec 2004
Location: Southlake, Texas
Posts: 626
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P-Mag
I seldom do a follow up in an opinion based discussion, but here are a few more thoughts.
The P-mags are completely self contained in a smaller and lighter than standard magneto format. There are no separate coils, sensors, or boxes to mount. Like a magneto, they are self energized. If the battery switch is left on, a single 9 volt transistor battery will power them up for a hand start. Timing them is so simple a caveman could do it!
I believe P-mags represent the state of the art in aircraft ignition.
__________________
Danny King
Beautiful Doll 80434 TT 1675 hours
I0360 A1B6 200 HP
Christen Inverted Oil
First Flight 12 July 2000
VAF Dues current for 2020
Last edited by Danny King : 09-28-2011 at 07:38 AM.
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