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Thanks for the hints. The voltage stays very constant. No pitot heat or other big consumers, except lights (landing/wigwag, position, strobes). I did some experiments today without the lights fo ...

Planepower/Harzell 60Amp, Earthx battery, GRT EIS 4000 w/hall effect sensor on alternator B-lead, running all lights, etc. Steady state getting these kinds of current fluctuations (see attachment).
...

Hi,

Has anyone already added to the [url=http://draw.io]draw.io program shape library with some shapes like Bob's? Should not take too long, but if I can save a couple hours of work it would ...

Hi,

I'm curious if we should use the exact same rating for fuses as are recommended for circuit breakers.

I have all fuses with one CB as recommended by the AEC, and for most devices they ...

Many thanks for all the feedback, gents. I've decided to skip the battery bus. I reserve the right to change my mind at the last minute! :DMickey Coggins

Hi,

I'm struggling to find anything that really needs to be connected to an always-hot battery bus.

I have an io360 with pmags which will power themselves in case of issue with the normal ...

Hi,

I've always heard that spark plug wires need some small distance between them, and that's what I did on my engine, but I'm curious what happens if you don't have distance betw ...

Hi Jan, Which eric jones product are you talking about? I've been all over his site It is a race with the relay and solenoid that enables the starter motor. A small rel ...

Thanks for the kind words - just doing it like Bob taught me via his book and many PDFs and images.Mickey Coggins

On Fri, 11 May 2018 at 15:39, FLYaDIVE <flyadive@gmail.com (What do you ...

FWF I used a lot of flat lace along with some adel clamps and I'm really happy with the way it turned out. I have some pictures here:

Good point Bob...

In general BLACK Ty-Wraps are UV ...

Hi Bob, The drawing is absolutely perfect for my application as-is. Last time I hand propped an aircraft was my boss's tri-pacer in 1978 or 79, so that feature is not a high priority for me. ...

Hi Bob, for hand propping, my understanding is that the device would need at least a bit of power. There is some discussion on some forums about just using a tiny 9v battery. I don't see anyth ...

Thanks Bob. The maintenance mode is for setting the ignition timing - if the device has power, but the p-lead is grounded, then it's in a mode where blowing on the manifold pressure tube connect ...

Thanks Bob - I've sent the drawing I have offline - I didn't want it to get out into the wild until you had a look as it might cause some confusion. Regards, Mickey
Mickey Coggins

...

Hi,

I have a printout of a Z-33 that shows how to wire pmags so that you can do maintenance on them, but I can't find this diagram any longer. The Z-33 I find is about Dual Power Path for Bat ...

...

Actually, since you're emulating a runaway
alternator, perhaps tight control over voltage
is unnecessary. You just need a current source
with an open circuit voltage substant ...

Hi,

Does anyone have a recommendation for a bench tester to see how lifepo4 batteries behave during an overvoltage event? Thinking about buying various brands of lifepo4 batteries and subjecting ...

Thanks for the feedback, gentlemen.

Kind regards,
Mickey

Mickey Coggins

On 3 September 2017 at 20:41, Robert L. Nuckolls, III <nuckolls.bob@aeroelectric.com ( At 11:14 AM 9/3/2017, yo ...

Hi,

The pmag instructions say that the maximum current draw is 0.25 amps, but they recommend 18 AWG wire for both power and ground, and 22 AWG for the other 4 wires.

From the manual:
"(P ...

In the Z diagrams, follow all the wires leaving the regulator. One of them (the A terminal on the generic Ford model) goes through the alternator half of the master switch, to a 5A breaker, which is t ...