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Search: Posts Made By: Carl Froehlich
Forum: RV-8/8A 11-14-2019, 06:37 AM
Replies: 3
Views: 337
Posted By Carl Froehlich
I mounted both the ADS-B antenna and receiver aft...

I mounted both the ADS-B antenna and receiver aft of the rear baggage compartment. The antenna aft of that bulkhead and the receiver just forward. The receiver is connected to the rest of the...
Forum: RV General Discussion/News 11-13-2019, 08:01 AM
Replies: 24
Views: 1,538
Posted By Carl Froehlich
I had the following objectives on my RV-10 Oxygen...

I had the following objectives on my RV-10 Oxygen install:
- Must be a portable system. I want to be able to remove it, and refill it using a shared refill rig we setup at the Airpark (we all have...
Forum: RV General Discussion/News 11-12-2019, 07:59 AM
Replies: 5
Views: 519
Posted By Carl Froehlich
Iíve seen a lot of RVs that suffer from the...

Iíve seen a lot of RVs that suffer from the problem of ďnot rigged rightĒ. Rigging is an iterative, time consuming process - far from the ďone and doneĒ as implied in the plans.

My suggestions:
-...
Forum: Electronic Ignition Systems 11-11-2019, 08:50 AM
Replies: 11
Views: 574
Posted By Carl Froehlich
Provide a photo of the pMag with drive gear...

Provide a photo of the pMag with drive gear attached.

Carl
Forum: Electrical Systems 11-11-2019, 08:40 AM
Replies: 8
Views: 438
Posted By Carl Froehlich
Send a note to AEROLed - they have a nice track...

Send a note to AEROLed - they have a nice track record of taking care of customers even with the warranty a little expired.

Carl
Forum: Traditional Aircraft Engines 11-08-2019, 10:00 AM
Replies: 6
Views: 331
Posted By Carl Froehlich
Go LOP and see if #2 peaks at a significantly...

Go LOP and see if #2 peaks at a significantly higher fuel flow than the other cylinders. If so, that cylinder is getting less flow than normal - perhaps a clogged injector.

If you never took data...
Forum: RV General Discussion/News 11-05-2019, 08:45 AM
Replies: 4
Views: 384
Posted By Carl Froehlich
I would never consider testing with fuel inside...

I would never consider testing with fuel inside the house. Why too many bad things can happen.

Carl
Forum: Autopilots 11-02-2019, 10:59 AM
Replies: 8
Views: 534
Posted By Carl Froehlich
The SkyView autopilot module provides the trim...

The SkyView autopilot module provides the trim switching function as well as the AutoTrim function. It does not provide power for the roll and pitch servos. Put both of these on a standard 5amp...
Forum: RV-14 11-01-2019, 07:24 AM
Replies: 8
Views: 960
Posted By Carl Froehlich
While there are a lot of options using pins and...

While there are a lot of options using pins and such on the rudder horn, I would not do that. Too many have failed when most needed - the rudder lever arm is just to big.

I have used this simple...
Forum: RV Building Tips/Techniques 10-28-2019, 09:31 AM
Replies: 1
Views: 390
Posted By Carl Froehlich
Alternate air screw backing out

Two local RVs reported the screw that provides the pivot point for the engine alternate air door had backed out. The plans call for a #8 nutplate to hold this screw.

I did away with the nutplate...
Forum: Glass Cockpit 10-23-2019, 09:23 PM
Replies: 13
Views: 1,235
Posted By Carl Froehlich
Go fly with with your RV buddies that have glass...

Go fly with with your RV buddies that have glass and decide what you like.

Carl
Forum: RV-7/7A 10-23-2019, 07:18 AM
Replies: 38
Views: 2,668
Posted By Carl Froehlich
Not quite right: - Off, pMag control grounded...

Not quite right:
- Off, pMag control grounded (like a mag) so it is off, power is applied from ship power. I do not recommend applying power using the second side of a DPDT switch (as in Off, no...
Forum: RV-7/7A 10-22-2019, 08:18 PM
Replies: 38
Views: 2,668
Posted By Carl Froehlich
You do not ground the p-lead to test, you keep...

You do not ground the p-lead to test, you keep the pMag control on and turn off ship power to the pMag to make sure the internal generator is working (engine running). To do a ďmag checkĒ you take...
Forum: RV General Discussion/News 10-22-2019, 05:00 PM
Replies: 10
Views: 721
Posted By Carl Froehlich
Short answer - yes. Donít use these chargers but...

Short answer - yes. Donít use these chargers but if you really must anyway, never run anything in the plane with a charger connected.
Such chargers have killed more batteries than they are...
Forum: RV General Discussion/News 10-22-2019, 02:00 PM
Replies: 10
Views: 721
Posted By Carl Froehlich
Let me sequence what I think you said: - The...

Let me sequence what I think you said:
- The alternator worked fine before you did the panel work.
- The alternator did not work at all after the panel work (as evidenced by the zero output and alt...
Forum: RV General Discussion/News 10-22-2019, 01:48 PM
Replies: 14
Views: 1,285
Posted By Carl Froehlich
Use the same wingtip VOR antenna for the hand...

Use the same wingtip VOR antenna for the hand held. The antenna tune is close enough to work for comm for this backup function. You just need a way to swap the feed - or put a stand alone second...
Forum: RV-7/7A 10-22-2019, 11:34 AM
Replies: 38
Views: 2,668
Posted By Carl Froehlich
Some thoughts: - For the pMags recommend a simple...

Some thoughts:
- For the pMags recommend a simple on/off locking toggle switch (one for each) and a 5 amp pull breaker (do not use your VPX). To test the pMags you do a simple manual trip of the...
Forum: RV Ongoing Maintenance Issues 10-20-2019, 11:55 AM
Replies: 6
Views: 421
Posted By Carl Froehlich
Exactly. Tape over the pitot drain holes and...

Exactly.

Tape over the pitot drain holes and tape on a hose over both the pitot and AOA ports.


T your vacuum source to both the static and to this pitot connection.

Carl
Forum: RV General Discussion/News 10-19-2019, 09:24 AM
Replies: 5
Views: 822
Posted By Carl Froehlich
Not hard. A new ~$30 blank panel from Van’s,...

Not hard. A new ~$30 blank panel from Van’s, some time cutting holes and perhaps added a couple of support angles for the radio stack, then paint. Done. This assumes the builder did not do point...
Forum: RV-14 10-18-2019, 08:07 PM
Replies: 4
Views: 932
Posted By Carl Froehlich
+1 Just did a long IFR trip in a 14A with about...

+1
Just did a long IFR trip in a 14A with about 30 minutes in IMC. Just as good as the RV-10.

Carl
Forum: RV-7/7A 10-18-2019, 07:38 PM
Replies: 14
Views: 1,277
Posted By Carl Froehlich
Or, old school moving paper images on a template...

Or, old school moving paper images on a template has always worked perfectly for me. Easy to try a bunch of different layouts, all in full...
Forum: RV-7/7A 10-17-2019, 10:06 AM
Replies: 14
Views: 1,277
Posted By Carl Froehlich
Some thoughts: - Tuck the left EFIS display as...

Some thoughts:
- Tuck the left EFIS display as high and left as possible.
- Mount the GPS/Comm as high as possible.
- Mount the GPS/Com between the two EFIS displays using a little panel width as...
Forum: Electronic Ignition Systems 10-15-2019, 08:34 AM
Replies: 12
Views: 1,418
Posted By Carl Froehlich
Send it to Brad at pMag to test/fix it. This is...

Send it to Brad at pMag to test/fix it. This is cheap (other than whatever shipping will cost from France). Also good to send it in if you have not updated the firmware.

Carl
Forum: RV General Discussion/News 10-14-2019, 09:29 AM
Replies: 44
Views: 5,385
Posted By Carl Froehlich
Shoot fire, it is just wire and until you dive...

Shoot fire, it is just wire and until you dive into it you will have no assurance against something there waiting to bite you.

Rip it out and start over - this is not rocket science.

Why have this...
Forum: Glass Cockpit 10-11-2019, 07:18 PM
Replies: 10
Views: 754
Posted By Carl Froehlich
The SkyView feeds pressure attitude information...

The SkyView feeds pressure attitude information to the ARINC via the SkyView network connection. The ARINC then feeds this to the GNS430.

Carl
Forum: RV-10 10-11-2019, 10:46 AM
Replies: 24
Views: 3,672
Posted By Carl Froehlich
Perhaps you should consider how much you trust...

Perhaps you should consider how much you trust the aluminum anchor that you cut the tail tie down threads into.

For me, I would never raise the nose by pulling down on the tail tie down. Lifting...
Forum: COMM 10-10-2019, 04:49 PM
Replies: 6
Views: 457
Posted By Carl Froehlich
Yep - just read this. So for most installs that...

Yep - just read this.

So for most installs that translates to no capability for the pilot talking on Comm #1 and the Co-Pilot talking on Comm #2. Most people do not care, but as I found out...
Forum: COMM 10-10-2019, 04:28 PM
Replies: 6
Views: 457
Posted By Carl Froehlich
Sorry to hear this - never had this issue when...

Sorry to hear this - never had this issue when running the GTN-650 and the Dynon radio.

Carl
Forum: COMM 10-10-2019, 10:28 AM
Replies: 6
Views: 457
Posted By Carl Froehlich
Garmin GTR 200 cross talk

For you Garmin experts out there.

Helping an RV-14 builder with a flying plane. He has a Garmin radio stack (GTN-650, GTR 200 and GMA 240 Audio Panel).

The panel was wired and tested by an...
Forum: Autopilots 10-05-2019, 08:45 AM
Replies: 3
Views: 478
Posted By Carl Froehlich
The SkyView default settings are very close. Carl

The SkyView default settings are very close.

Carl
Forum: RV Building Tips/Techniques 09-30-2019, 08:35 AM
Replies: 24
Views: 2,498
Posted By Carl Froehlich
I assume you used non-hardening clay. I found...

I assume you used non-hardening clay.

I found that a little Coleman Fuel on my fingers worked a lot better than water to smooth the clay. Once I figure this out it was fairly straight...
Forum: RV General Discussion/News 09-29-2019, 08:30 PM
Replies: 11
Views: 965
Posted By Carl Froehlich
This works well - and puts out enough power to...

This works well - and puts out enough power to charge your battery while it powers your...
Forum: Glass Cockpit 09-29-2019, 09:10 AM
Replies: 19
Views: 1,083
Posted By Carl Froehlich
Alex, You may want to consider covering those...

Alex,

You may want to consider covering those exposed terminals.

Carl
Forum: Glass Cockpit 09-28-2019, 03:31 PM
Replies: 19
Views: 1,083
Posted By Carl Froehlich
+1. Three RVs and none have a shunt. So why...

+1. Three RVs and none have a shunt.

So why install an ampmeter? If you are old enough you may recall that all cars had an ampmeter but none had a voltmeter. The reason is ampmeters at the time...
Forum: Electrical Systems 09-24-2019, 05:05 PM
Replies: 14
Views: 676
Posted By Carl Froehlich
You have jumped to the conclusion that the Garmin...

You have jumped to the conclusion that the Garmin GTR200 is not the issue. My experience with the GTR200 has been problematic, with crosstalk noise as you describe - and this was a panel done by an...
Forum: Electronic Ignition Systems 09-24-2019, 11:01 AM
Replies: 14
Views: 2,851
Posted By Carl Froehlich
Brad is doing an update to make it consistent...

Brad is doing an update to make it consistent with the production run.

Carl
Forum: Electronic Ignition Systems 09-23-2019, 01:26 PM
Replies: 5
Views: 619
Posted By Carl Froehlich
Yep - you found your problem. Carl

Yep - you found your problem.

Carl
Forum: Electronic Ignition Systems 09-22-2019, 08:32 PM
Replies: 5
Views: 619
Posted By Carl Froehlich
Iím assuming you shifted from a mag to the pMag. ...

Iím assuming you shifted from a mag to the pMag. If so, did you use the same wire for tach input and if so, did you remove the inline resistor needed when using a mag to feed the Dynon?

Carl
Forum: RV-8/8A 09-22-2019, 02:21 PM
Replies: 2
Views: 527
Posted By Carl Froehlich
A common approach is to use the felt side of a...

A common approach is to use the felt side of a 3/4Ē wide roll of Velcro (adhesive backing). I did this and it stayed in place for years.

Carl
Forum: RV Building Tips/Techniques 09-22-2019, 12:30 PM
Replies: 14
Views: 2,339
Posted By Carl Froehlich
On the first point, donít overlook future panel...

On the first point, donít overlook future panel mods. Once flying many builders figure out that what seemed like a good idea (placement of stuff for example) proved other wise. Simple mods should...
Forum: RV Building Tips/Techniques 09-19-2019, 07:32 PM
Replies: 14
Views: 2,339
Posted By Carl Froehlich
Bill, If you question is for me then: -...

Bill,

If you question is for me then:
- Reliably, no problems on the multi year (and now 5th panel mod) on the 8A. No problems on the seven year (and now 3rd panel mod) on the RV-10. Note - I use...
Forum: RV-7/7A 09-19-2019, 07:18 PM
Replies: 56
Views: 5,841
Posted By Carl Froehlich
Iíll have to be a contrarian on this. I had dual...

Iíll have to be a contrarian on this. I had dual screen SkyViews in the RV-10 with the GTN-650 in the middle. The screens were biased left but the GTN-650 was in the middle. The left screen was...
Forum: RV Building Tips/Techniques 09-19-2019, 03:17 PM
Replies: 14
Views: 2,339
Posted By Carl Froehlich
The fuel filter in an 8 (assuming a standard AFP...

The fuel filter in an 8 (assuming a standard AFP unit mounted in the standard location) is not all that hard (and easy compared to RVs with tunnels) once you get the pilot seat ramp and floor out. ...
Forum: RV General Discussion/News 09-19-2019, 10:20 AM
Replies: 12
Views: 1,253
Posted By Carl Froehlich
Testing before flying

Either quick build or slow build tanks, I recommend thorough testing before final assembly.

The leak test per the Vanís manual will find gross leaks, but not the typical ďweepingĒ leak that seems to...
Forum: RV-7/7A 09-19-2019, 09:05 AM
Replies: 56
Views: 5,841
Posted By Carl Froehlich
Have you considered how you will do maintenance...

Have you considered how you will do maintenance and further mods to the panel - without major surgery or on your back with your head under the panel?

Here is a post I recently put out on this...
Forum: RV-10 09-18-2019, 12:40 PM
Replies: 9
Views: 602
Posted By Carl Froehlich
From the baggage compartment bulkhead aft, wire...

From the baggage compartment bulkhead aft, wire runs include:
- ELT antenna coax (if you mount it under the empennage fairing)
- Trim motor (a single four #22 conductor shielded wire)
- Tail...
Forum: Electronic Ignition Systems 09-17-2019, 09:59 AM
Replies: 13
Views: 1,441
Posted By Carl Froehlich
I donít argue with the point made that one pMag...

I donít argue with the point made that one pMag produces most (but not all) of the gain when compared with dual pMags. I remind people however that the pain of running mags should not be ignored. ...
Forum: RV-8/8A 09-16-2019, 04:43 PM
Replies: 16
Views: 1,863
Posted By Carl Froehlich
Consider cutting a hole in the right rear arm...

Consider cutting a hole in the right rear arm rest to floor cover plate. Add a bulkhead so that whatever is put in there does not get to the flap arm. Do not do this on the left side as the flap...
Forum: RV-14 09-16-2019, 09:12 AM
Replies: 36
Views: 4,075
Posted By Carl Froehlich
The 1/4Ē line on the fuel pump is not a vent, it...

The 1/4Ē line on the fuel pump is not a vent, it is a telltale for a failed fuel pump diaphragm. In any case this feature is not affected by what fuel mixture you are running.

If the fuel pump...
Forum: RV-14 09-15-2019, 08:40 PM
Replies: 36
Views: 4,075
Posted By Carl Froehlich
Do you mean the sniffle valve?

Do you mean the sniffle valve?
Forum: RV-14 09-15-2019, 06:57 PM
Replies: 36
Views: 4,075
Posted By Carl Froehlich
What type of servo are you running that has a...

What type of servo are you running that has a vent dumping into the cowl?

Carl
Forum: RV General Discussion/News 09-15-2019, 10:11 AM
Replies: 26
Views: 2,308
Posted By Carl Froehlich
If you have the cash, build a 14. Your bride...

If you have the cash, build a 14. Your bride will be much happier when flying with you (more room for her and her stuff) and the 14 is a nice machine for instruction. I also consider the 14 an...
Forum: Glass Cockpit 09-13-2019, 01:47 PM
Replies: 8
Views: 1,129
Posted By Carl Froehlich
Or, just put your trusty Boy Scout compass out on...

Or, just put your trusty Boy Scout compass out on the wing away from the fuselage and outside the bell crank area, then walk the airplane around the four compass rose points.

Carl
Forum: RV Building Tips/Techniques 09-12-2019, 07:41 PM
Replies: 14
Views: 2,339
Posted By Carl Froehlich
Building for maintenance and modernization

I key design element common on the three RVs I built is ease of maintenance and ability to upgrade as opportunity presents, without too much pain. Toward that end I make sure I never violate my rule...
Forum: RV-10 09-12-2019, 12:37 PM
Replies: 9
Views: 1,563
Posted By Carl Froehlich
I did not get extra material. A careful cut...

I did not get extra material. A careful cut using a thin blade Dremel cut off wheel will allow reusing the cutout for the door. I added the side backing plates to restore rigidity.

Carl
Forum: RV-10 09-12-2019, 12:30 PM
Replies: 35
Views: 1,669
Posted By Carl Froehlich
Ok - now I get it. The G3X has an internal GPS...

Ok - now I get it. The G3X has an internal GPS receive that needs an antenna for each display. The SkyView uses an integrated GPS receiver/antenna so the one unit can independently feed multiple...
Forum: RV-10 09-12-2019, 11:55 AM
Replies: 35
Views: 1,669
Posted By Carl Froehlich
So a dual Garmin G3X install needs a GPS antenna...

So a dual Garmin G3X install needs a GPS antenna for each display? I would not have guessed.

Each SkyView display uses the same GPS antenna via serial ports. The functioning of one display does...
Forum: RV-10 09-12-2019, 08:52 AM
Replies: 35
Views: 1,669
Posted By Carl Froehlich
Three, four or five GPS antennas? Really? I am...

Three, four or five GPS antennas? Really?

I am not an expert on Garmin glass, but for IFR I get by just fine with one SkyView GPS antenna and one GTN-650 GPS antenna. On the RV-10 both were...
Forum: RV-10 09-11-2019, 10:18 AM
Replies: 8
Views: 876
Posted By Carl Froehlich
Paul, You are correct. At issue here however is...

Paul,

You are correct. At issue here however is excessive HS downward force. On my RV-8A the elevators were always deflected down in cruise, even when solo. More down with a passenger in the...
Forum: RV-10 09-11-2019, 09:22 AM
Replies: 9
Views: 1,563
Posted By Carl Froehlich
Here is a simple access door that allows visual...

Here is a simple access door that allows visual inspection of the batteries, battery relays and tail cone. It comes in handy, but for any real work the lower bulkhead panel needs to come...
Forum: RV-10 09-10-2019, 06:49 PM
Replies: 8
Views: 876
Posted By Carl Froehlich
Andi, Had the same situation on my RV-10. I...

Andi,

Had the same situation on my RV-10. I added a 0.063 shim under the forward HS spar to address (I did a 0.040 shim on my RV-8A and it did the trick). On the RV-10 however this shim achieved...
Forum: RV-8/8A 09-08-2019, 08:02 PM
Replies: 13
Views: 1,305
Posted By Carl Froehlich
Donít forget to get a dozen or so drain valve O...

Donít forget to get a dozen or so drain valve O rings from Vanís (CAV-110 O-Ring). After you replace the drain valve you can fix the old one so it is ready for the next time the O ring needs...
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