Matronics Email Lists

Thanks everyone and especially Bob and the article you wrote on thermocouples. I learned I didn't have a complete and accurate understanding of thermocouples and their principles.

We are connect ...

Thanks guys.

Stein, I see where it's okay as long as each temp probe has the same bias for EGTs. Seems like I'd want the CHTs to be as accurate as possible, though... Is there a best connection t ...

Hello,

We're on the verge of connecting our Garmin GEA 24 Engine Airframe Processor/Box to our engine's thermocouples. Each engine thermocouple has a pigtail of two wires with ring terminals on the ...

Hello Bob,

Thanks again for all your help over the years of our (wife and my) Lancair Legacy project.

In our electrical system design, we’ve gone with a pull-out fuse tray that is on the ...

Hey gang,

We’d like a simple way to light up an engine fire/compartment temperature annunciator on our instrument panel. We will be using a G3X Touch auxiliary temperature input to measure ...

Hello,

Can anyone recommend a good, small, preferably environmentally sealed connector to use on the five conductor cable of 22 AWG wires that run to each of the Ray Allen trim servos? If I werenâ ...

Yes, in the version used in the Legacy they scissor up from the wings – see image below...

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Thanks Bob. I read your recent, excellent article on DO-160 testing. With EAB airplanes, can we count on all the devices installed having seen the same testing? I’m planning on a bunch of Gar ...

Thanks Bob and everyone for your most excellent help. I’m a novice at electrical circuit stuff as you can tell – but, eager to learn and willing to ask questions.

And yes, I agree, ...

Thanks Bob â€“ thatâ€™s much simpler and elegant.Â As I looked at your design I just kept saying â€œBobâ€™s a geniusâ€¦â€Â JÂ Â I think I was stuck on preserving the Lancair circuitry instead of j ...

Thanks Roger, that is a viable approach for that feature without the VPX. What I like about the VPX flap control most is just pressing the flap button and it automatically moving to the next programm ...

Thanks Bob N. Yea, the Kendle looks nice. I think when you see the Lancair flap circuitry drawing it will be more clear why connecting the VPX motor drive lines directly to the limit switches won't ...

Thanks Bob N and Jeff Page for pointing this out . This detail isn't in the VPX Installation Manual and I assumed, maybe incorrectly, that the flap motor power lines just went dead to stop the flap m ...

Thanks Bob McC, you have an excellent memory.Â Iâ€™ve corrected those labels now.Â

Iâ€™ve worked up a drawing with yours and the otherâ€™s suggestion to just use two relays to interface between ...

When I type in a post, if it gets too long, the auto preview runs over the typing window and makes it impossible to edit. See screen shot example attachment. I'm using Internet Explorer 10. Does an ...

Here's more detail in what I'm trying to accomplish in trying to use the VPX and its flap control features with the motor breaking circuitry of the Lancair Legacy flap control mechanism.

The good ...

Hey gang,

Can anyone help me find a source for this type relay â€“ DPDT (On) Off (On), 28 VDC, Max 15 Amps? Online I can find plenty of DPDT relays but not with the (On) Off (On) throwâ€¦

Iâ€™m ...

Thanks Robert -- that would be nice if I didnâ€™t already have a throttle quadrant that isnâ€™t very conducive to adding a switch to itâ€¦Â See photo below.

Valin

From: owner-aeroelec ...

Thanks Bob – looks like something along those lines would do the trick. These examples switch AC current with the DC control. I’m not sure if that matters or not. But, I figured relays ...

Hi Bob and everyone,

Thanks for the history of the Precise Flight Speedbrakes/Spoilers. Since they brand them “speed brakes” I’ve been using that term even though I know the ...