|
-
POSTING RULES
-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|
08-20-2014, 11:23 PM
|
|
|
|
Join Date: Dec 2008
Location: Newbury Park, CA
Posts: 282
|
|
Left or right mag?
To those that installed a single EI, did you replace the left or right mag?
What was your reasoning and did it work out as planned?
My understanding is that with the EI working, you'll still start on the EI. But in the event of an EI failure, having the impulse coupled MAG would be beneficial. On the flip side, ditching the left mag reduces moving parts/complexity.
Thanks in advance,
Craig
__________________
Craig Bennett
321GT Flying RV6
2018 dues paid, how about you?
|
08-20-2014, 11:56 PM
|
 |
|
|
Join Date: May 2008
Location: Brisbane Qld. Aust.
Posts: 2,271
|
|
My personal opinion is stick with two mags. 
So with that out of the way. Why would it matter if you had a EI failure??..surely you are not about to start up and fly away on the one remaining mag?
I think it is possibly a moot point.
__________________
______________________________
David Brown
DYNON Authorised Dealer and Installer
The two best investments you can make, by any financial test, an EMS and APS!
|
08-21-2014, 05:15 AM
|
 |
|
|
Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,399
|
|
Personally Id keep the impulse mag. If your having EI problems, it is advantageous to be able to get the engine running for troubleshooting.
__________________
Kahuna
6A, S8 ,
Gold Hill, NC25
|
08-21-2014, 06:37 AM
|
 |
|
|
Join Date: Jul 2009
Location: Mojave
Posts: 4,643
|
|
And just to show the other side:
I dumped the complexity, weight, and possibility of trashing the accessory drivetrain of the impulse mag. Couldn't wait to get that hand grenade off my engine.
If I was flying a Supercub into the Alaskan bush, I might think differently.
It really doesn't matter. Consider the benefits and pitfalls, but don't agonize over the decision.
__________________
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
|
08-21-2014, 06:38 AM
|
|
|
|
Join Date: Jun 2012
Location: Frederick, MD
Posts: 819
|
|
I kept the impulse (left) mag. If the battery is really low and just able to get over compression, the EI probably won't work. Learned this lesson in the past where I replaced the left mag and had no impulse on right.
I am considering the possibility that I am away from home and need to get the engine started.
__________________
Dan Morris
Frederick, MD
PA28-140
Hph 304CZ
RV6 built and sold
N199EC RV6A flying
Learn the facts. "Democracy dies in darkness"
|
08-21-2014, 07:29 AM
|
|
|
|
Join Date: Dec 2008
Location: Big Sandy, WY
Posts: 2,567
|
|
Actually, I've been wrenching planes over 30 years and have never seen a coupling come apart, have never heard about it on an airport I've worked at, and don't know anyone personally that 's had one come apart. Its just not real common now that people actually look at them occasionally.
__________________
Actual repeat offender.
|
08-21-2014, 07:38 AM
|
|
|
|
Join Date: Dec 2004
Location: Gold Hill, NC25
Posts: 2,399
|
|
And to piggy back on what Dan said.. A dead battery and a hand prop has gotten many a pilot by with an impulse mag.
__________________
Kahuna
6A, S8 ,
Gold Hill, NC25
|
08-21-2014, 09:03 AM
|
|
|
|
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,344
|
|
Quote:
Originally Posted by RVDan
I kept the impulse (left) mag. If the battery is really low and just able to get over compression, the EI probably won't work. Learned this lesson in the past where I replaced the left mag and had no impulse on right.
I am considering the possibility that I am away from home and need to get the engine started.
|
Same thing here for the same logic.
__________________
Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - Flying
Dues paid
|
08-21-2014, 09:31 AM
|
 |
|
|
Join Date: Jan 2005
Location: SC
Posts: 12,887
|
|
Quote:
Originally Posted by Kahuna
And to piggy back on what Dan said.. A dead battery and a hand prop has gotten many a pilot by with an impulse mag.
|
And the right ignition is usually easier to remove and replace.
__________________
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
|
08-21-2014, 03:32 PM
|
|
|
|
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 617
|
|
Just a comment on flat batteries and P-Mags.
I have dual P-Mags, left the master on for 1 week so the battery would turn the prop but could not get it past the compression stroke.
A friend hand propped for me, and the engine fired on the second pull through.
So from my perspective these things are great and you can still get out of trouble in most situations.
Cheers
__________________
Eddie Seve
Sydney Australia
First Flight 16th July 2012
RV-7 Phase 2, 30 Oct 2012
1100 hrs Feb 2020
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 04:19 AM.
|
Linear Mode
