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Search: Posts Made By: MCA
Forum: Glass Cockpit 04-06-2021, 01:01 PM
Replies: 10
Views: 1,118
Posted By MCA
+1 it's probably wiring, as the faults span...

+1 it's probably wiring, as the faults span multiple avionics boxes and vendors. Just curious if you're able to take a picture behind the panel and post it. Neat wiring is not always proper wiring...
Forum: RV-9/9A 02-21-2021, 03:12 PM
Replies: 75
Views: 9,034
Posted By MCA
Sam, The VP-X and other modules that run trim...

Sam,

The VP-X and other modules that run trim don't normally directly connect to the audio system. In the case of the VP-X, it sends a signal to the EFIS whenever the trim is moving, and then it is...
Forum: Electrical Systems 01-25-2021, 10:25 PM
Replies: 23
Views: 1,726
Posted By MCA
Intermittent problems are always challenging....

Intermittent problems are always challenging. :mad:

At first blush this looks like a bad connection somewhere that has vibrated loose over the years. I've also seen bad switches that click but don't...
Forum: RV-10 01-25-2021, 05:10 PM
Replies: 20
Views: 1,256
Posted By MCA
Bob, Have you reached out to Chad at VP support?...

Bob,

Have you reached out to Chad at VP support?

There are thousands of VP-Xs operating and there's plenty of "power" to move the trim motor on an RV-10 in cruise flight.

This one is a...
Forum: RV-9/9A 01-25-2021, 04:52 PM
Replies: 75
Views: 9,034
Posted By MCA
Dan, I'm glad you found the issue and you're safe...

Dan, I'm glad you found the issue and you're safe on the ground. There IS a way to "unstick" the trim at full deflection. We put a lot of thought and testing into the VP-X trim system because of this...
Forum: Electrical Systems 01-07-2021, 10:58 PM
Replies: 44
Views: 5,022
Posted By MCA
Another reason to use an ANL is to have the fuse...

Another reason to use an ANL is to have the fuse located next to the battery contactor. If you use a high-current circuit breaker you must run a large wire through the firewall to the circuit...
Forum: RV Ongoing Maintenance Issues 12-31-2020, 11:41 AM
Replies: 2
Views: 592
Posted By MCA
There is no battery in the VP-200. I think you're...

There is no battery in the VP-200. I think you're referring to the suggestion in the manual to change the aircraft battery every two years.
Forum: Safety 12-06-2020, 12:52 PM
Replies: 91
Views: 14,208
Posted By MCA
Got me thinking of a recent find... here's a...

Got me thinking of a recent find... here's a picture of an AHRS mounted in sponges, mounted in a Tupperware container, which was mounted behind the panel. This was from a VFR Sonex project at the...
Forum: Safety 12-06-2020, 12:43 PM
Replies: 91
Views: 14,208
Posted By MCA
Hmmm.. maybe I should add a chapter to the Wiring...

Hmmm.. maybe I should add a chapter to the Wiring Guide about the importance of bolting avionics to the airframe. :rolleyes:
Forum: Electrical Systems 11-24-2020, 09:23 AM
Replies: 12
Views: 2,322
Posted By MCA
Glad to see you got this resolved! :D

Glad to see you got this resolved! :D
Forum: Electrical Systems 11-22-2020, 10:21 PM
Replies: 6
Views: 913
Posted By MCA
Perhaps you can post a wiring diagram to clarify...

Perhaps you can post a wiring diagram to clarify what's involved here? :)
Forum: RV General Discussion/News 08-24-2020, 08:56 PM
Replies: 41
Views: 7,771
Posted By MCA
Vic - great book. I love all the pictures and...

Vic - great book. I love all the pictures and insights. Why didn't you publish this 15 years ago when I built my RV??? ;) :D

Definitely worth the price!
Forum: Electrical Systems 08-21-2020, 12:28 PM
Replies: 20
Views: 3,381
Posted By MCA
0.1 to 0.2 fluctuation in volts does not seem...

0.1 to 0.2 fluctuation in volts does not seem problematic.

You say strobe lights are on as well as wig-wag , and that should explain the amp fluctuations.

Try turning all lights off and see what...
Forum: Electrical Systems 08-17-2020, 11:26 PM
Replies: 4
Views: 1,252
Posted By MCA
Try disconnecting the connectors on each end, and...

Try disconnecting the connectors on each end, and then plugging back in. Sometimes it's the simple things.

A loose wire also seems likely.
Forum: RV-10 08-17-2020, 11:13 PM
Replies: 20
Views: 3,529
Posted By MCA
XM Radio

You have the XM antenna going right to a GDU 465.

Check me on this, but I'm pretty sure the 465 display is discontinued, and you now need to install a GDL 51R, and run that to a 460.
Forum: Traditional Aircraft Engines 05-31-2020, 08:55 PM
Replies: 77
Views: 16,619
Posted By MCA
Hi Bernie, it has been a while. Your numbers are...

Hi Bernie, it has been a while. Your numbers are certainly better than mine. :)
Forum: Traditional Aircraft Engines 05-31-2020, 10:10 AM
Replies: 77
Views: 16,619
Posted By MCA
I was an early adopter of PMags and had my share...

I was an early adopter of PMags and had my share of issues. Fortunately, they have addressed the issues since then.

It hasn't been mentioned explicitly so I'll say it here. PMags only generate their...
Forum: Glass Cockpit 05-12-2020, 09:13 PM
Replies: 13
Views: 4,333
Posted By MCA
You guys have some good videos on YouTube on...

You guys have some good videos on YouTube on wiring the Canbus network for the G3X. I recommend 'em for anyone wiring their own panel.

https://www.youtube.com/watch?v=jmVLVhGoGQs&t=9s
Forum: Glass Cockpit 05-12-2020, 09:05 PM
Replies: 8
Views: 1,790
Posted By MCA
Paul, I found this but no...

Paul, I found this but no wedge...?

http://www.vansairforce.com/community/showthread.php?t=5213
Forum: Glass Cockpit 05-12-2020, 08:57 PM
Replies: 40
Views: 11,160
Posted By MCA
Ron, IMO you are making your system less...

Ron,

IMO you are making your system less reliable by adding in extra complexity and failure points. There is guidance in the VP-X install manual about backups.

My 2c. :D
Forum: My RV Build Project 05-10-2020, 11:24 PM
Replies: 150
Views: 76,430
Posted By MCA
I get that some people in this community want to...

I get that some people in this community want to roll their own which is great. If you don't want to roll your own, all the features you've listed and more are available in the VP-X. :)
Forum: Electrical Systems 05-06-2020, 03:48 PM
Replies: 44
Views: 8,254
Posted By MCA
I have to agree with Walt on this one. In the...

I have to agree with Walt on this one. In the quest for redundancy, you'll likely get lower reliability and tricky troubleshooting in the future.

The great think about Exp aircraft is we can build...
Forum: RV-10 04-10-2020, 09:49 PM
Replies: 19
Views: 2,249
Posted By MCA
I've flown both the 650 and the 750 and much...

I've flown both the 650 and the 750 and much prefer the 750. +1 The layout above that Walt shows is my recommendation.
Forum: RV-6/6A 03-27-2020, 02:07 PM
Replies: 36
Views: 11,184
Posted By MCA
Wow, love these wiring diagrams!

Wow, love these wiring diagrams!
Forum: RV-10 03-27-2020, 01:57 PM
Replies: 7
Views: 1,149
Posted By MCA
Looks clean! I'm glad you used a snap bushing...

Looks clean!

I'm glad you used a snap bushing instead of a rubber grommet.
Forum: Electrical Systems 03-24-2020, 10:30 AM
Replies: 18
Views: 4,007
Posted By MCA
Oh, and one more comment about distribution: The...

Oh, and one more comment about distribution:

The book is sold both electronically and in paperback.

The paper version is printed and distributed worldwide by a third party, and books are digitally...
Forum: Electrical Systems 03-24-2020, 10:20 AM
Replies: 18
Views: 4,007
Posted By MCA
Thank you all for the feedback and PMs. I do try...

Thank you all for the feedback and PMs. I do try to focus on key information with broad applicability rather than specific details or vendor-specific instructions (other than Vertical Power).

I'll...
Forum: RV Ongoing Maintenance Issues 03-17-2020, 09:15 PM
Replies: 23
Views: 3,052
Posted By MCA
Hmmm... looks like you did a thorough checkout....

Hmmm... looks like you did a thorough checkout. Things don't add up.

The only thing I can think of is that the alternator has some type of internal short that causes it to feed itself power....
Forum: Electrical Systems 03-17-2020, 02:31 PM
Replies: 18
Views: 4,007
Posted By MCA
Feedback for "Aircraft Wiring Guide" Book

I'm looking for feedback from those that have read the Aircraft Wiring Guide (see link in the signature below) and wanted to get any input about:
- new topics to include
- updates to existing...
Forum: Electrical Systems 03-17-2020, 02:28 PM
Replies: 10
Views: 1,772
Posted By MCA
-------------------- +1

--------------------

+1
Forum: Electrical Systems 03-17-2020, 02:23 PM
Replies: 2
Views: 691
Posted By MCA
Charlie, Have you tried reaching out to Chad at...

Charlie, Have you tried reaching out to Chad at VP?
Forum: Glass Cockpit 03-17-2020, 02:17 PM
Replies: 7
Views: 1,310
Posted By MCA
A Vertical Power VP-X would be a nice complement...

A Vertical Power VP-X would be a nice complement to that panel! ;)
Forum: RV-14 03-15-2020, 11:39 PM
Replies: 8
Views: 2,078
Posted By MCA
Hey Allen, I'm all for starting the engine with...

Hey Allen, I'm all for starting the engine with the alternator turned off. IMO there's no reason to have it on during start. Just gotta remember to turn it on after start ;)

Marc
Forum: Trip Write-ups 03-10-2020, 03:08 PM
Replies: 10
Views: 2,750
Posted By MCA
Thanks for sharing, now we have some new places...

Thanks for sharing, now we have some new places to check out. Any way you slice it, the landing at Sedona is a wonderful event!
Forum: RV-14 03-10-2020, 02:50 PM
Replies: 15
Views: 2,684
Posted By MCA
The Vertical Power systems and most newer EFIS...

The Vertical Power systems and most newer EFIS units have an input to sense that the starter solenoid is engaged and show a corresponding alert. One wire and worth it! ;)
Forum: RV-14 12-12-2019, 10:02 PM
Replies: 5
Views: 1,533
Posted By MCA
Agreed, no shield required. If you start...

Agreed, no shield required.

If you start getting strange voltage fluctuations or over-voltage trips first thing to check is the field wire connector on the alternator itself. Engine vibrations can...
Forum: Safety 12-07-2019, 05:40 PM
Replies: 31
Views: 6,650
Posted By MCA
Looking forward to it Vic!

Looking forward to it Vic!
Forum: Electrical Systems 11-23-2019, 12:29 PM
Replies: 4
Views: 1,292
Posted By MCA
You'll love it! No better way to wire your...

You'll love it! No better way to wire your aircraft! :D
Forum: RV General Discussion/News 11-23-2019, 10:34 AM
Replies: 11
Views: 6,756
Posted By MCA
It's basically pointless to add OV protection to...

It's basically pointless to add OV protection to an automotive-style IR alternator, as shutting off power to the field wire (which is what the OV protection does) will not stop the OV condition....
Forum: Autopilots 11-23-2019, 10:25 AM
Replies: 26
Views: 3,621
Posted By MCA
What does Dynon support say? I'm curious and saw...

What does Dynon support say? I'm curious and saw this in a friend's RV as well.
Forum: Electrical Systems 11-08-2019, 01:51 PM
Replies: 9
Views: 1,089
Posted By MCA
Hi Steve, Yes, Jesse has put in a lot of VP...

Hi Steve,

Yes, Jesse has put in a lot of VP products and does a nice job on the RV-10s.

We could discuss the value of such additional backups all day, but backups should be off of a battery bus,...
Forum: Electrical Systems 11-07-2019, 11:16 PM
Replies: 10
Views: 1,790
Posted By MCA
16 volts is the normal upper limit. Most modern...

16 volts is the normal upper limit. Most modern avionics can support up to 32 volts, and temporary excursions above that for very short periods of time (<1 sec).

Overvoltage conditions need to be...
Forum: Electrical Systems 11-07-2019, 11:11 PM
Replies: 9
Views: 1,089
Posted By MCA
Steve, I'm not sure why you have a master...

Steve,

I'm not sure why you have a master switch, that's not part of the recommended install. And I'm not sure how you wired it. So I can't say what's happening since your wiring appears to be...
Forum: Electrical Systems 11-07-2019, 11:04 PM
Replies: 20
Views: 2,488
Posted By MCA
I agree with Joe on this one. Volts will tell...

I agree with Joe on this one.

Volts will tell you everything you need to know. One could argue that you don't need to "manage" the load if the alternator fails. Just turn off things you don't need...
Forum: RV General Discussion/News 10-02-2019, 11:07 PM
Replies: 4
Views: 565
Posted By MCA
They have an office in US in Los Angeles. Their...

They have an office in US in Los Angeles. Their info is here:
http://mglavionics.com/html/contact_us.html

Try and talk with Matt, he's been there since the beginning and knows the older stuff.
Forum: RV General Discussion/News 09-28-2019, 10:20 AM
Replies: 5
Views: 978
Posted By MCA
Upon further reflection, I've decided my earlier...

Upon further reflection, I've decided my earlier post could be and has been misinterpreted, so it's been removed. Anyone who has access to the internet to post on VAF is able to get a replacement...
Forum: Glass Cockpit 09-28-2019, 10:05 AM
Replies: 21
Views: 3,045
Posted By MCA
Another option to consider is just not installing...

Another option to consider is just not installing a shunt, to keep things simple. You can use voltage to determine if the alternator is working. The bus voltage is at about 12v when the alternator is...
Forum: Glass Cockpit 09-24-2019, 11:50 PM
Replies: 15
Views: 6,913
Posted By MCA
Check out the AFS EFIS. It can display a 6-pack...

Check out the AFS EFIS. It can display a 6-pack for those so inclined!
Forum: Electrical Systems 09-20-2019, 10:48 PM
Replies: 10
Views: 1,590
Posted By MCA
A single main bus works for most conventional...

A single main bus works for most conventional aircraft, both VFR and IFR, with varying levels of backup and redundancy depending on your mission.

If you are running an electrically-dependent engine...
Forum: RV-7/7A 09-20-2019, 09:35 PM
Replies: 59
Views: 15,792
Posted By MCA
Another input

My 2 cents: dump the round dials and the Hobbs meter. Cut out the panel for the 650 and the G5 and put in blanking plates for now. Wire up the harness for the 650 and G5 now.

You'll thank your past...
Forum: Electrical Systems 09-20-2019, 09:26 PM
Replies: 1
Views: 656
Posted By MCA
No issues running two in series to get 24 volts....

No issues running two in series to get 24 volts. I'd recommend changing them together as well in the future every few years.
Forum: Electrical Systems 09-20-2019, 09:23 PM
Replies: 10
Views: 1,590
Posted By MCA
I haven't seen the Z-14 in common use for a...

I haven't seen the Z-14 in common use for a while. It was used for IFR panels in exp aircraft a while back (like 20 years ago), but these days we have ways to provide backup and redundancy using a...
Forum: RV General Discussion/News 09-19-2019, 07:30 PM
Replies: 55
Views: 12,359
Posted By MCA
Congrats Andrew! :D

Congrats Andrew! :D
Forum: Electrical Systems 09-19-2019, 05:30 PM
Replies: 10
Views: 1,590
Posted By MCA
Hi Steve, your wiring diagram image doesn't come...

Hi Steve, your wiring diagram image doesn't come through for me.
Forum: Glass Cockpit 09-19-2019, 05:27 PM
Replies: 68
Views: 21,294
Posted By MCA
Steve, the G5 manual calls out the use of...

Steve, the G5 manual calls out the use of lower-cost OAT probes from EDMO and Davtron, but these are not also called out in the G3X manual. Since both the GSU 25 (G3X AHRS) and GAD 13 (OAT interface...
Forum: RV General Discussion/News 09-15-2019, 11:46 PM
Replies: 3
Views: 814
Posted By MCA
If you're using the I-terminal (small threaded...

If you're using the I-terminal (small threaded post) for a starter indicator light on the instrument panel, switching the wires on the main posts may cause the I terminal to be on (+12v) whenever the...
Forum: Glass Cockpit 08-27-2019, 08:42 PM
Replies: 15
Views: 6,913
Posted By MCA
Looks like interesting stuff for the right...

Looks like interesting stuff for the right application!
Forum: RV-14 08-27-2019, 08:35 PM
Replies: 8
Views: 4,068
Posted By MCA
The master switch, battery contactor, or wiring...

The master switch, battery contactor, or wiring between the two could be at fault as mentioned.

I see you have a backup battery. Could that have been left on, or wired in a way that accidentally...
Forum: Electrical Systems 07-30-2019, 05:04 PM
Replies: 8
Views: 1,844
Posted By MCA
Danny, What is the "master" circuit breaker? The...

Danny,

What is the "master" circuit breaker? The master switch brings the master contactor to ground and does not need a breaker.
Forum: RV General Discussion/News 07-13-2019, 08:09 PM
Replies: 6
Views: 1,807
Posted By MCA
When I sold my RV-7 (sob) I created a website and...

When I sold my RV-7 (sob) I created a website and included lots of pictures and everything related to the aircraft that I could think of. This included build logs, maintenance records, wiring...
Forum: RV-14 06-15-2019, 01:04 PM
Replies: 10
Views: 4,059
Posted By MCA
Tosten sticks come with different adapters to fit...

Tosten sticks come with different adapters to fit different aircraft. There's also a new shaft for -14. https://tostenmanufacturing.com/product/rv-14-control-shaft/
Forum: Electrical Systems 05-15-2019, 05:56 PM
Replies: 7
Views: 1,332
Posted By MCA
I second Vern's comment. The Series 2 CPC work...

I second Vern's comment. The Series 2 CPC work great with standard dsub pins.

Be sure to get the housings as well as the strain relief parts.
Forum: Glass Cockpit 05-13-2019, 05:28 PM
Replies: 2
Views: 548
Posted By MCA
Mark, Let me know if you need any VP-100 info....

Mark, Let me know if you need any VP-100 info. Marc
Forum: RV Ongoing Maintenance Issues 04-30-2019, 09:01 PM
Replies: 13
Views: 1,424
Posted By MCA
There's always some tolerance due to many of the...

There's always some tolerance due to many of the variables discussed above.

I'd argue that 0.2v is not critical for normal aircraft operations. What you're looking for are, with engine...
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