R magneto installation direction

Any DA40 related topics

Moderators: Rick, Lance Murray

Post Reply
User avatar
smoss
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Steve
Aircraft: DA40
Airport: KVGT

Posts: 542
Joined: Sun Dec 12, 2010 12:18 am
Has thanked: 14 times
Been thanked: 58 times

R magneto installation direction

Post by smoss »

On my plane, my right side (passenger side) mag has always been installed "upside-down", with the P-lead on the bottom, and a huge pain to get to every year. 2 questions... First, is everyone's like this, or did someone before my ownership flip it over during re-installation. Second, considering you can just install it either way after pinning the L hole in the mag, is there any reason not to put it with the P-lead up? It seems all the wire connections would reach either way, and it would be a whole lot easier. The ignition harness would, of course, need to be flipped over, which would require a fair bit of rerouting the spark plug wires.
Steve
DA40 XL
User avatar
Steve
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Steve
Aircraft: DA40
Registration: N432SC
Airport: 1T7

Posts: 1156
Joined: Thu Aug 12, 2010 1:23 am
Has thanked: 26 times
Been thanked: 175 times

Re: R magneto installation direction

Post by Steve »

Mine was like that from the factory (R mag with the P lead terminal on the bottom). Although I did replace the mags with new ones and had the originals overhauled about 200 hours ago, we installed them in the same configuration.
DSCN5933.jpg
If you look at the picture of my engine when I pulled it last Summer to fix the loose set screw issue, it appears that if you flip the R mag to put the P lead terminal on top, there could be two possible issues:

1) The RPM Hall effect sensor would be moved outboard, and the cable/connector for it might be too short;
2) The oil cooler line connector (inboard of the mag) appears like it might interfere if the mag were flipped 180 degrees;

plus, the Lycoming manuals show it installed as it is on our engines...

Steve
User avatar
smoss
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Steve
Aircraft: DA40
Airport: KVGT

Posts: 542
Joined: Sun Dec 12, 2010 12:18 am
Has thanked: 14 times
Been thanked: 58 times

Re: R magneto installation direction

Post by smoss »

Ah... the oil cooler line does look like it would be an issue. The RPM lead is plenty long. Bummer. Thanks.
Steve
DA40 XL
User avatar
Rich
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Rich
Aircraft: DA40
Registration: N40XE
Airport: S39

Posts: 2403
Joined: Mon Aug 30, 2010 12:40 pm
Has thanked: 64 times
Been thanked: 358 times

Re: R magneto installation direction

Post by Rich »

As it happens I was examining my right mag yesterday as a side effect of fiddling with the Surefly. I can't, for the life of me, figure out how I ever got that thing out to get it serviced :scratch:
2002 DA40: MT, PF, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210.
User avatar
gsontheimer
4 Diamonds Member
4 Diamonds Member
FIRST NAME: gsontheimer
Aircraft: DA40
Registration: N937DS
Airport: EDHL

Posts: 288
Joined: Thu Jun 17, 2010 9:44 am
Has thanked: 6 times
Been thanked: 5 times

Re: R magneto installation direction

Post by gsontheimer »

What is your experience with the SureFly Mag/EI? Did you replace the R/H or L/H Mag?
Gerhard

N937DS: DA40.992 (2008 XLS)
FAA: ATP, CFI, CFII, CFMEI
EASA: CPL(A), IR, FI(A), IRI, FE(A)
Cirrus TCI
User avatar
Rich
5 Diamonds Member
5 Diamonds Member
FIRST NAME: Rich
Aircraft: DA40
Registration: N40XE
Airport: S39

Posts: 2403
Joined: Mon Aug 30, 2010 12:40 pm
Has thanked: 64 times
Been thanked: 358 times

Re: R magneto installation direction

Post by Rich »

gsontheimer wrote:
Thu May 21, 2020 8:02 am
What is your experience with the SureFly Mag/EI? Did you replace the R/H or L/H Mag?
Left for me. See this thread for the continuing saga:

viewtopic.php?f=24&t=6721
2002 DA40: MT, PF, 530W/430W, KAP140, ext. baggage, 1090 ES out, 2646 MTOW, 40gal., Surefly, Flightstream 210.
Post Reply