Today's Message Index:
----------------------
1. 05:30 AM - Re: Magneto P leads (Noel Loveys)
2. 10:01 AM - Re: Magneto P leads (DEAN PSIROPOULOS) (Matt Jurotich)
Message 1
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--> Engines-List message posted by: "Noel Loveys" <noelloveys@yahoo.ca>
The centre wire of your P Lead should go to your Ignition switch. The nut
you are talking about holds the P-Lead in place and prevents the P-Lead from
grounding at the mag end.
When the P-Lead is grounded there is no spark to fire the plugs. In order
for the engine to work the P-Lead must "float" with no grounds any where in
it.
Noel
> -----Original Message-----
> From: owner-engines-list-server@matronics.com
> [mailto:owner-engines-list-server@matronics.com] On Behalf Of
> DEAN PSIROPOULOS
> Sent: Monday, July 24, 2006 3:14 AM
> To: engines-list@matronics.com
> Subject: Engines-List: Magneto P leads
>
>
> --> Engines-List message posted by: "DEAN PSIROPOULOS"
> <dean.psiropoulos@verizon.net>
>
> I'm wondering about connecting the P leads at the magneto.
> Looking at the
> top of the (Slick) magneto, I removed the nut and star washer
> and found an
> insulating fiber washer underneath. Looking under the
> washer, there is the
> threaded stud which projects from a piece of white plastic
> that is in turn
> surrounded by a shiny piece of metal that looks like a large nut. My
> question has to do with grounding the P lead out on the
> magneto which is
> recommended for lowest system noise. I assume that the fiber
> washer is
> there to keep the P lead terminal from grounding the threaded
> stud to the
> "shiny metal nut" that surrounds the plastic that the stud
> projects out of.
> If so, can I use two ring terminals on the coax, one with a
> much larger ring
> placed under the fiber washer which will serve as the return
> grounding path
> and then place a smaller ring terminal (connected to the
> other wire in the
> coax) on top of the fiber washer (which is on top of the larger ring
> terminal contacting the shiny metal nut) under the nut that
> goes on the stud
> and not have to worry about magneto grounding somewhere else
> on the engine?
> I'm just trying to not have to strip a whole bunch of shield
> off the P lead
> for grounding at a separate location and this looks like it
> should work but
> I know nothing about magnetos so I'm not sure if my
> hypothesis is correct.
> I hope you can decipher what I trying to say. Thanks.
>
> Dean Psiropoulos
> RV-6A N197DM
> Stringing wire (still)
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
Message 2
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| Subject: | Re: Magneto P leads (DEAN PSIROPOULOS) |
--> Engines-List message posted by: Matt Jurotich <mjurotich@hst.nasa.gov>
At 02:56 AM 7/24/2006, you wrote:
>*
>
> =================================================
> Online Versions of Today's List Digest Archive
> =================================================
>
>Today's complete Engines-List Digest can also be found in either of the
>two Web Links listed below. The .html file includes the Digest formatted
>in HTML for viewing with a web browser and features Hyperlinked Indexes
>and Message Navigation. The .txt file includes the plain ASCII version
>of the Engines-List Digest and can be viewed with a generic text editor
>such as Notepad or with a web browser.
>
>HTML Version:
>
>
>http://www.matronics.com/digest/engines-list/Digest.Engines-List.2006-07-23.html
>
>Text Version:
>
>
>http://www.matronics.com/digest/engines-list/Digest.Engines-List.2006-07-23.txt
>Slick mags have tow teminals one is labeled ground. You need to only
>strip about 3 inches (8 cm) of shield braid.
> ===============================================
> EMail Version of Today's List Digest Archive
> ===============================================
>
>
> ----------------------------------------------------------
> Engines-List Digest Archive
> ---
> Total Messages Posted Sun 07/23/06: 1
> ----------------------------------------------------------
>
>
>Today's Message Index:
>----------------------
>
> 1. 10:49 PM - Magneto P leads (DEAN PSIROPOULOS)
>
>
>________________________________ Message
>1 _____________________________________
>
>
>Time: 10:49:15 PM PST US
>From: "DEAN PSIROPOULOS" <dean.psiropoulos@verizon.net>
>Subject: Engines-List: Magneto P leads
>
>--> Engines-List message posted by: "DEAN PSIROPOULOS"
><dean.psiropoulos@verizon.net>
>
>I'm wondering about connecting the P leads at the magneto. Looking at the
>top of the (Slick) magneto, I removed the nut and star washer and found an
>insulating fiber washer underneath. Looking under the washer, there is the
>threaded stud which projects from a piece of white plastic that is in turn
>surrounded by a shiny piece of metal that looks like a large nut. My
>question has to do with grounding the P lead out on the magneto which is
>recommended for lowest system noise. I assume that the fiber washer is
>there to keep the P lead terminal from grounding the threaded stud to the
>"shiny metal nut" that surrounds the plastic that the stud projects out of.
>If so, can I use two ring terminals on the coax, one with a much larger ring
>placed under the fiber washer which will serve as the return grounding path
>and then place a smaller ring terminal (connected to the other wire in the
>coax) on top of the fiber washer (which is on top of the larger ring
>terminal contacting the shiny metal nut) under the nut that goes on the stud
>and not have to worry about magneto grounding somewhere else on the engine?
>I'm just trying to not have to strip a whole bunch of shield off the P lead
>for grounding at a separate location and this looks like it should work but
>I know nothing about magnetos so I'm not sure if my hypothesis is correct.
>I hope you can decipher what I trying to say. Thanks.
>
>Dean Psiropoulos
>RV-6A N197DM
>Stringing wire (still)
>
>
Matthew M. Jurotich
e-mail mail to: <mjurotich@hst.nasa.gov>
phone : 301-286-5919
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