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frank(at)orionite.com
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 Posted: Fri Aug 07, 2009 1:14 pm Post subject: Solid core Vs resistive wires and plugs. |
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Mark,
Good points, all.
FWIW
There are too many variables to try and account for the results other people
are getting. We have no control over what they are doing so we need to get
back to basics.
The ORIGINAL design was for the coils to drive a solid wire to a
non-resistive plug. This is to get maximum spark energy to the plugs.
So then if you are using the original coils (magnetos) and swap the wires
and plugs for something else those plugs and wires need to be solid core
wires and non-resistive plugs.
Original equipment magnetos are not known for their spark energy so
you needed a non-resistive path to achieve full spark energy. If you use
resistive wires and/or resistive plugs you are reducing spark energy below
what is already considered a weak spark (by today's standards).
Resistive plugs and wires were developed to reduce EMI without increasing
expense i.a. it would have been expensive to use a shielded system like we
have on aircraft in every passenger car. The coils in passenger cars are
more
powerful than our magnetos so they could get away with doing this.
One of the only vehicles I know of that was produced with solid core wires
was a Corvette and it used shielded wires and a shielded distributor.
The braid around our wires is an EMI shield. The braid is designed to shield
RF emissions. It's sometimes called a Faraday Cage. Solid core wire, non
resistive plugs and shielding was and is the original design for aircraft
ignition systems manufactured by the Russians, Chinese and Americans.
If the original installed ignition system isn't working (is not enough to
suppress radio interference) we need to look for where RF energy is leaking
from. Maybe you have large gaps in the braid, broken braid or braid that is
not grounded on both ends.
We should not be using resistive wires and resistive plugs with the weak
spark energy being produced by original equipment Russian and Chinese mags.
Frank
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jimscjs(at)mbay.net
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| Posted: Fri Aug 07, 2009 2:10 pm Post subject: Solid core Vs resistive wires and plugs. |
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Frank
Good response, and how are you feeling, Salinas is real slow so far today,
but hope it will get busy tonight and the weekend.
Jim
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pfstelwagon(at)earthlink.
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| Posted: Fri Aug 07, 2009 2:53 pm Post subject: Solid core Vs resistive wires and plugs. |
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Jim,
That wasn't me. I feel a little better just got up 3:00 Pm. At least the
room isn't going around but I feel like crap.
Frank
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crichka(at)hotmail.com
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| Posted: Sun Aug 09, 2009 8:19 pm Post subject: Solid core Vs resistive wires and plugs. |
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Frank C
first time someone with engineering knowledge.
I'd like to add that 8mm. wire does not help on a low voltage magneto C The Russian system was built to work and most mods. are unnecessary.
Chanock
Born to fly C Forced to work
[quote] From: jimscjs(at)mbay.net
To: yak-list(at)matronics.com
Subject: Re: Solid core Vs resistive wires and plugs.
Date: Fri C 7 Aug 2009 14:46:38 -0700
--> Yak-List message posted by: "Jim" <jimscjs(at)mbay.net>
Frank
Good response C and how are you feeling C Salinas is real slow so far today C
but hope it will get busy tonight and the weekend.
Jim
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