Benefits of bigger plug gap for PMag?

[elippse]

Originally Posted by G3i Ignition

This may sound like a broken record, if you screw in a 25-watt bulb in a 100-watt socket, its not going to any brighter.

Not according to Algore!

[jjconstant]

I found this video and its explanations of the pros and cons for bigger and smaller gaps seem to make sense.

Jeremy


http://www.youtube.com/watch?v=Bl8ri...v-9Tg&index=13

[elippse]

Sacramento Sky Ranch has put out lots of really good info relative to magneto ignition systems, and their magneto book is a treasure. This video should be viewed by anyone wondering about plug gap!

[Mel]

I would mindful of a wide plug gap on a e-mag/p/mag. The electronics may fire the wide gap just fine, but what if that fails and it reverts back to a basic magneto? Would it then be able to fire across a wide gap?

[Brantel]

It never reverts to a magneto. It runs on built in alternator power as soon as it can. Even when running on internal alternator power, it is still electronic. You can run a Pmag on a 9 volt battery....


The 114 P-mag is an electronic ignition that happens to have a built in alternator. The P-mag runs on external power up to about 800 RPM and then it seamlessly switches to the built in power source. Under normal operation the P-mag runs on it's internal power source most of the time. The spark firing circuit never changes. It is the same on external power as it is on internal power. The coil excitation power sent to the coil is the same at 1 rpm as it is at 2700. Internal or external power makes no difference...

Lasar is the one that will revert to a standard mag operation if the brain box dies.

G3ignition does as well I think. Might be wrong on that one though.

[jjconstant]

I've just opened the gap on the fine wire iridiums to .032-.035. I'll be test flying it today, but thought I should pass along a tip...

My only gripe with the E/PMag installation is that if you use aviation plugs the wire is held onto the plug with a screw on nut, but no "B" nut to prevent the wiring from twisting. There are 2 silicone washers inside the nut and twisting the silicone washers on a silicone insulated wire REALLY twists the wire. EMagAir recommends silicone lubricant so I go out and get a spray can of silicone lubricant. Applying it liberally makes very little difference and the act of screwing on the nut to the plug becomes an excercise in frustration.

A friend who has installed a few of these systems who I was complaining to told me to use DC4 which is a silicone grease. I imagine it will be much better! I'll be getting some today...

Jeremy Constant