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dean.psiropoulos(at)veriz
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 Posted: Sat Mar 11, 2006 10:22 pm Post subject: Lightspeed Ignition with Key switch |
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I've been looking at my drawings one more time before actually wiring this
up. I have one (Slick) magneto and one Lightspeed Plasma II+. I was hoping
to hook them BOTH to the standard aircraft key switch (A-510-2) but in
looking at it again, I'm not sure that will work. If I connect the Plasma
II+ at the key switch ground (GRD) and the "R" terminal I have a usable
connection. If however, I want to also connect the Left Magneto P-lead to
the switch then I have to connect the center conductor of the magneto P-lead
to the "L" terminal and the "P" Lead shield to the switch "GRD" connection.
The only problem with this is that the other end of the magneto P-lead
shield will have to be grounded out at the magneto case which, I believe,
would effectively ground it to the airframe and battery negative potential.
According to a note on Lightspeed's connection diagram, the Plasma II+ key
switch wiring can NOT be connected to airframe ground.
So...it appears to me that I cannot connect both the Plasma II+ and a
magneto P-lead to the same key switch!? For you folks running this same set
up, do I understand this correctly or am I missing something? Thanks.
Dean Psiropoulos
RV-6A N197DM
Autocad psychosis
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Tim(at)MyRV10.com
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| Posted: Sun Mar 12, 2006 5:56 am Post subject: Lightspeed Ignition with Key switch |
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Dean,
Another builder, Dave Sundberg passed this on to me previously, and
I wired mine this way and it indeed works fine. It does seem a bit
like black magic, but seeing as it works fine I won't be complaining. 
------
The P-Lead from the mag goes to the L-Terminal on the Switch with the
shield connected to the GRN terminal on the mag and not connected to
anything on the switch end.
The P-Lead from the LS (Pin 1) goes to the R-Terminal on the
switch and the shield (Pin 9) goes to the GRN-Terminal in the
center of the switch.
Do not connect the jumper from the R-Term to the GRN-Terminal next
to it.
Do not connect the center GRN-Terminal on the switch to aircraft
ground. Both ignitions are grounded out with the switch in the OFF position.
Dave had been flying and it was working for him. I have now been
flying and am done with my flyoff and it's worked great for me too.
I had previously spent time hooking mine up and ohming things
out and was confused as heck. I also was confused in that the P-Lead
on the mag is seemingly shorted to ground even with the wire
disconnected, so I couldn't easily tell that it would be grounded
by the switch. If you hook it all up, except for the mag P-Lead,
you can indeed see that they ground the way their supposed to.
Tim Olson - RV-10 N104CD - Flying
DEAN PSIROPOULOS wrote:
| Quote: |
I've been looking at my drawings one more time before actually wiring this
up. I have one (Slick) magneto and one Lightspeed Plasma II+. I was hoping
to hook them BOTH to the standard aircraft key switch (A-510-2) but in
looking at it again, I'm not sure that will work. If I connect the Plasma
II+ at the key switch ground (GRD) and the "R" terminal I have a usable
connection. If however, I want to also connect the Left Magneto P-lead to
the switch then I have to connect the center conductor of the magneto P-lead
to the "L" terminal and the "P" Lead shield to the switch "GRD" connection.
The only problem with this is that the other end of the magneto P-lead
shield will have to be grounded out at the magneto case which, I believe,
would effectively ground it to the airframe and battery negative potential.
According to a note on Lightspeed's connection diagram, the Plasma II+ key
switch wiring can NOT be connected to airframe ground.
So...it appears to me that I cannot connect both the Plasma II+ and a
magneto P-lead to the same key switch!? For you folks running this same set
up, do I understand this correctly or am I missing something? Thanks.
Dean Psiropoulos
RV-6A N197DM
Autocad psychosis
|
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?AeroElectric-List |
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