Spark plug wire on #1 cyl

Discussion of the Aerovee kit engine.

Re: Spark plug wire on #1 cyl

Postby Darick » Mon Dec 19, 2016 12:34 pm

I was going to use the extra spark plug wire from the secondary ignition (they were cut to length per instructions), but it is a suppressor cable that has a inner conductor of some fiber material, carbon fiber maybe?. Since the inner conductor on the primary spark plug wires is just a copper wire (basically 0 resistance) I thought it would be wise to measure the resistance on the secondary wires.

As suspected, the resistance is much higher than the primary. I'm not real knowledgeable on reading the ohm scale on my old analog multimeter, so I can't tell you where the decimal point goes on the number I got...set at 1K it was at 1.5 or 15 or 150, etc?

Does that mean I can't use it on the secondary?

And why does the primary use a wire of zero resistance? Why does the secondary have a high resistance wire?

The 45 degree plug would work perfect for the #1 top plug. NGK splicer.
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N417DG
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Re: Spark plug wire on #1 cyl

Postby intoaircooled » Mon Dec 19, 2016 8:41 pm

That is exactly what I am using on all four plugs, as far as the resistance the distance is so short to really make any kind of differance all you really want is spark to the plugs. This has been working very well so far.

You need to keep in mind that the "magnaton" coil pack is for a two cylinder Briggs & Stratton engine. Very simple, very cost friendly that's what makes them so great (no moving parts).
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Re: Spark plug wire on #1 cyl

Postby Darick » Mon Dec 19, 2016 8:46 pm

Thanks Carl, I used your idea from one of your earlier posts.

Also here is a small suggestion for connecting the spark plug wires to the spark plug. Maybe this is how it is supposed to be done, but I didn't know it.
Push the rubber boot far enough on the wire so the connector is exposed. (I didn't do this - the connector was covered by the boot). Push the connector onto the plug. Now push the rubber boot over the plug. Pre lube the boot and wire with a little bit of soapy water and the boot will slip over the wire easily.

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Darick Gundy
Sonex #1646
N417DG
Taildragger, Aerovee, center stick, Prince P-Tip Prop
MGL E1, F2, V6 radio, Sandia Xponder, Reserve lift indicator (AOA), iFly 520
First flight! 10/21/2017
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Re: Spark plug wire on #1 cyl

Postby Area 51% » Sun Jan 05, 2020 3:19 pm

I'm at that magic moment, trying to route the bottom magnetron wires to the upper rear plugs without drilling a passage through the exhaust pipes. I wish they would have billed me for the extra inch of wire needed to make the routing painless.

Not wanting to add extensions to the existing wires, or remove the factory wires and replace with longer leads, is there some reason not to use the bottom magnetron wires on the lower set of plugs instead of the upper plugs on #1 and #3? They reach easily, and the secondary leads can be routed and cut just as easily to the top plugs as they can the bottom.

And yes, I'm aware the correct secondary coil will have to be employed, and the spark plug gaps will have to correspond with the appropriate ignition source.

Anxious to wet my fingers and test for spark here @Area 51%
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