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Search: Posts Made By: Carl Froehlich
Forum: RV-7/7A Today, 10:27 AM
Replies: 29
Views: 1,490
Posted By Carl Froehlich
Not to be a pain, but my observations are from...

Not to be a pain, but my observations are from flying the RV-14A. My fuel burn comparisons are as stated, between the RV-8A, RV-14A and RV-10. Flying the three airplanes, a standard 170kt TAS LOP...
Forum: RV-7/7A Today, 09:06 AM
Replies: 29
Views: 1,490
Posted By Carl Froehlich
No horse in this race as I am an RV-8 or RV-10...

No horse in this race as I am an RV-8 or RV-10 guy. I did help finish an RV-14A and have some observations.

It is obvious the RV-14/14A kit is targeted at the growing number of Van’s customers...
Forum: RV General Discussion/News Yesterday, 12:34 PM
Replies: 6
Views: 337
Posted By Carl Froehlich
Do yourself a favor and only use the extruded...

Do yourself a favor and only use the extruded hinge material for the lower cowl (MS20001P).

I replaced the bottom hinges on the RV-10 with this as the left side had repeated hinge loops breaking...
Forum: RV General Discussion/News Yesterday, 10:49 AM
Replies: 43
Views: 9,784
Posted By Carl Froehlich
Good for you but I have been burned by the TSO...

Good for you but I have been burned by the TSO side of Garmin on my orginal GTN-650 purchase. I had to fix what I was told where ďknown problemsĒ on my dime.

I just purchased another GTN-650 for...
Forum: RV-10 Yesterday, 08:00 AM
Replies: 21
Views: 969
Posted By Carl Froehlich
Please provide the part number. Thanks, Carl

Please provide the part number.
Thanks,
Carl
Forum: RV General Discussion/News Yesterday, 07:57 AM
Replies: 17
Views: 1,157
Posted By Carl Froehlich
Iíve posted on this in the past so for those...

Iíve posted on this in the past so for those readers who track such stuff, please be tolerant.

Mark,

I offer that the single failure mode (loss of the alternator) that you address is not the...
Forum: Glass Cockpit 12-12-2018, 10:40 AM
Replies: 6
Views: 637
Posted By Carl Froehlich
The Dynon SkyView system will do everything...

The Dynon SkyView system will do everything needed for full GPS approach capability other than the TSO GPS navgator. Here something like a GTN-650 is needed to feed the SkyView to be legal...
Forum: RV-10 12-11-2018, 05:44 PM
Replies: 11
Views: 475
Posted By Carl Froehlich
The plastic ones. The Aero caps are much nicer...

The plastic ones.

The Aero caps are much nicer - but in my opinion grossly overpriced. I find the standard fuel cap a better option.

Carl
Forum: RV-10 12-11-2018, 01:00 PM
Replies: 11
Views: 475
Posted By Carl Froehlich
Just an FYI. I built a set of RV-14 tanks and...

Just an FYI.

I built a set of RV-14 tanks and was not impressed with this fuel cap. I would have used the standard caps but these tanks already had the larger hole for these caps.

Carl
Forum: Traditional Aircraft Engines 12-10-2018, 09:54 PM
Replies: 5
Views: 657
Posted By Carl Froehlich
Iíd call Don at Airflow Performance and ask about...

Iíd call Don at Airflow Performance and ask about the spider.

Carl
Forum: Traditional Aircraft Engines 12-10-2018, 06:01 PM
Replies: 5
Views: 657
Posted By Carl Froehlich
When this happens was power pulled back, perhap...

When this happens was power pulled back, perhap at idle? If so, I would suspect a piece of crud in the spider blocking one of the spiderís small idle port.

Had a similar issue with another engine,...
Forum: RV-10 12-10-2018, 02:28 PM
Replies: 5
Views: 279
Posted By Carl Froehlich
You all are making this too hard. Two pieces of...

You all are making this too hard.

Two pieces of wire, each ~25” long (standard dipole equation, total length (in ft)=468/freq in MHZ). In a perfect world feedpoint impedance is 75 ohms, but for us...
Forum: COMM 12-10-2018, 02:15 PM
Replies: 9
Views: 338
Posted By Carl Froehlich
One way: - Icom HF transceiver with remote head:...

One way:
- Icom HF transceiver with remote head: https://www.hamradio.com/detail.cfm?pid=H0-011766
- Use the matching AH-4 antenna tuner. Radio base and tuner mounted aft, tuner as close to the tow...
Forum: COMM 12-09-2018, 07:57 PM
Replies: 9
Views: 338
Posted By Carl Froehlich
Several audio panels can accommodate a ďComm 3Ē. ...

Several audio panels can accommodate a ďComm 3Ē. What audio panel are you using?

My Dogwood neighbor that circumnavigated the globe over both poles installed a Icom HF ham radio with a trailing...
Forum: COMM 12-09-2018, 01:50 PM
Replies: 9
Views: 297
Posted By Carl Froehlich
Makes no difference. I install the heated pitot...

Makes no difference.

I install the heated pitot on the left wing, the roll servo and nav antenna right wing. Work on the first two airplanes - will do again on the current project.

You should be...
Forum: COMM 12-09-2018, 10:02 AM
Replies: 3
Views: 175
Posted By Carl Froehlich
Odds are the radio is not drawing more current -...

Odds are the radio is not drawing more current - your current meter is being affected by RFI. Look for cable cross talk, bad connectors, etc.

This is a must have tool for radio and nav...
Forum: Traditional Aircraft Engines 12-08-2018, 10:02 AM
Replies: 11
Views: 803
Posted By Carl Froehlich
As you demonstrated both ignitions work if run...

As you demonstrated both ignitions work if run separately, perhaps looking at common ignition issues when both are running would make a good first step. For example:
- Did you bundle any ignition...
Forum: RV-8/8A 12-08-2018, 08:02 AM
Replies: 3
Views: 382
Posted By Carl Froehlich
The short answer - no. Initial wing fit can be...

The short answer - no.

Initial wing fit can be done with hardware store bolts and such, but this needs to be done before anything else (and requires both wings to be on). Remember you need to set...
Forum: Glass Cockpit 12-07-2018, 09:10 AM
Replies: 6
Views: 391
Posted By Carl Froehlich
Wow - talk about testing oneís restraint.... Carl

Wow - talk about testing oneís restraint....

Carl
Forum: RV General Discussion/News 12-06-2018, 10:19 AM
Replies: 27
Views: 1,703
Posted By Carl Froehlich
Good discussion. As I mentioned I did add a shim...

Good discussion. As I mentioned I did add a shim on my 8A under the HS forward spar.

My thought on this was straight forward. If the HS was providing too much downward force in cruise, it would...
Forum: RV General Discussion/News 12-05-2018, 05:19 PM
Replies: 27
Views: 1,703
Posted By Carl Froehlich
Did this on the 8A - added a 0.40Ē shim under the...

Did this on the 8A - added a 0.40Ē shim under the forward HS spar. It provided just enough reduction of HS downward force to bring the elevators in trail for cruise, but still had enough so that I...
Forum: RV General Discussion/News 12-05-2018, 08:20 AM
Replies: 25
Views: 1,983
Posted By Carl Froehlich
Regardless of what your wife says now, she will...

Regardless of what your wife says now, she will most likely grow tired of looking at the back of your head.

So what I tell people:
- If you fly mostly by yourself and only occasionally have the wife...
Forum: Electrical Systems 12-05-2018, 08:07 AM
Replies: 7
Views: 357
Posted By Carl Froehlich
My recommendation, if this turns out to be an...

My recommendation, if this turns out to be an expensive fix donít dump more money into it, replace with AeroLED nav/strobes.

Carl
Forum: RV-14 12-03-2018, 04:58 PM
Replies: 24
Views: 1,538
Posted By Carl Froehlich
Donít rely on the jigs as truth - they just get...

Donít rely on the jigs as truth - they just get you in the ball park.

Here is a thread I posted a step by step process: http://www.vansairforce.com/community/showthread.php?t=165907&page=2

Iím...
Forum: RV General Discussion/News 12-03-2018, 12:31 PM
Replies: 36
Views: 2,726
Posted By Carl Froehlich
I did a James Cowl and Plenum. No harder than...

I did a James Cowl and Plenum. No harder than any other option.

Carl
Forum: Propellers 12-02-2018, 04:46 PM
Replies: 18
Views: 1,350
Posted By Carl Froehlich
Wink That is sacrilege! Carl

That is sacrilege!

Carl
Forum: RV-10 12-02-2018, 11:59 AM
Replies: 11
Views: 996
Posted By Carl Froehlich
I did the easy way - Infinity Grip wire routed...

I did the easy way - Infinity Grip wire routed along the back of the stick inside a piece of tygon tubing. Unless you are doing just a single switch or two the inside the stick option gets hard.

My...
Forum: Propellers 12-02-2018, 11:46 AM
Replies: 18
Views: 1,350
Posted By Carl Froehlich
I donít have a horse in this race, but recommend...

I donít have a horse in this race, but recommend you do a value equation on the various prop options. No prop has proven better performace than the two blade Hartzell BA, and many props degrade...
Forum: Electronic Ignition Systems 12-01-2018, 10:48 AM
Replies: 53
Views: 5,191
Posted By Carl Froehlich
Electronic igntion is not so much about HP gain. ...

Electronic igntion is not so much about HP gain. It is about having the timing advance when high and LOP to get better fuel efficiency. This week I cruised from Ocala Florida to Shannon Virginia at...
Forum: Glass Cockpit 12-01-2018, 08:30 AM
Replies: 2
Views: 287
Posted By Carl Froehlich
I assume AFS provides free NAV/Terrain/Obstacle...

I assume AFS provides free NAV/Terrain/Obstacle updates every 28 days like Dynon does for the SkyView system. If so, then the only thing to get for the IFD540 is the NAV data subscription if you are...
Forum: VAF Classifieds (posts in here deleted after 30 days) 12-01-2018, 07:34 AM
Replies: 12
Views: 1,419
Posted By Carl Froehlich
Iíve seen this problem once on a pMag install. ...

Iíve seen this problem once on a pMag install. The builder set the timing with the crank at 25 degrees BTDC instead of at TDC.

Carl
Forum: Electrical Systems 11-30-2018, 08:38 PM
Replies: 9
Views: 580
Posted By Carl Froehlich
Local shield grounds for RF noise are a...

Local shield grounds for RF noise are a consideration. DC ground at the firewall for power is another. No reason not to do both. That is what I do with my AeroLED install and enjoy no RFI.

Carl
Forum: RV General Discussion/News 11-30-2018, 12:29 PM
Replies: 13
Views: 2,936
Posted By Carl Froehlich
I did a 1Ēx1Ē word color document then used clear...

I did a 1Ēx1Ē word color document then used clear tape to make a label for the panel saying what color on the Infinity grip did what. The FSDO was happy with that.

Carl
Forum: Electrical Systems 11-30-2018, 09:00 AM
Replies: 9
Views: 580
Posted By Carl Froehlich
Exactly. My guess is you are using the...

Exactly.

My guess is you are using the airframe as the ground path. Works most of the time but also can be problematic. I always provide a wired ground path back to the firewall ground block for...
Forum: RV-10 11-29-2018, 01:51 PM
Replies: 21
Views: 1,534
Posted By Carl Froehlich
Be careful of unintended consequences

To clear ice from on the outside of the windshield by blasting heat on the inside would lead me to reflect on my days of stress equations for heat transfer across material. Here the cold outside...
Forum: RV General Discussion/News 11-29-2018, 10:14 AM
Replies: 15
Views: 1,853
Posted By Carl Froehlich
For RVs other than the RV-10 and RV-14 this is...

For RVs other than the RV-10 and RV-14 this is right. Half flaps provide lift. Full flaps provide little more lift but much more drag. I aways land with full flaps.

For the RV-10 and RV-14 the...
Forum: RV General Discussion/News 11-29-2018, 07:49 AM
Replies: 15
Views: 1,853
Posted By Carl Froehlich
+1 This flap positioning system (also sold by...

+1

This flap positioning system (also sold by Vanís) is what I put in three RVs. Just a bump and it goes to the next postion, another bump and it goes again, flip your flap switch up and they go...
Forum: RV General Discussion/News 11-26-2018, 06:17 PM
Replies: 13
Views: 1,157
Posted By Carl Froehlich
Airflow Performance. Installed in three RVs and...

Airflow Performance. Installed in three RVs and have been flawless.

Carl
Forum: RV General Discussion/News 11-26-2018, 02:41 PM
Replies: 49
Views: 7,487
Posted By Carl Froehlich
What kind of taxes do you get hit with for your...

What kind of taxes do you get hit with for your airplane at CO15?

Carl
Forum: RV-8/8A 11-26-2018, 01:07 PM
Replies: 11
Views: 1,136
Posted By Carl Froehlich
Just finished a dual SkyView, GTN-650 install for...

Just finished a dual SkyView, GTN-650 install for my new RV-8 project. Some thoughts on your layout if you want:
- Move the autopilot panel to below the EFIS display, move the EFIS display as high...
Forum: COMM 11-26-2018, 08:32 AM
Replies: 16
Views: 867
Posted By Carl Froehlich
You want the IFR navigator as high as you can get...

You want the IFR navigator as high as you can get it. If you find you have room for the shorter audio panel after you get the IFR navigator as high as it will go, them put it above the IFR...
Forum: RV-8/8A 11-25-2018, 10:52 AM
Replies: 3
Views: 392
Posted By Carl Froehlich
Try adjusting the rudder cable length (the...

Try adjusting the rudder cable length (the firewall anchors).

BTW - the RV-8 I helped with has independently reservoirs on the master cylinders. I found them to be a real PITA to check and fill. ...
Forum: Electrical Systems 11-24-2018, 04:03 PM
Replies: 15
Views: 1,268
Posted By Carl Froehlich
I recommend a relay for your 20 or 30 amp loads. ...

I recommend a relay for your 20 or 30 amp loads. I found this a quality and a good value choice: https://www.alliedelec.com/schneider-electric-magnecraft-92s11d22d-12/70185037/

Carl
Forum: RV-10 11-24-2018, 02:52 PM
Replies: 8
Views: 830
Posted By Carl Froehlich
I have a 4Ē butterfly valve from ACS in line with...

I have a 4Ē butterfly valve from ACS in line with the SCAT hose to the cooler. Fully shut keeps oil temps up on the coldest day. Even on not so cold days it gets shut a little out keep temps above...
Forum: Glass Cockpit 11-24-2018, 10:16 AM
Replies: 8
Views: 749
Posted By Carl Froehlich
I have always maintained the chart subscription. ...

I have always maintained the chart subscription. But, I found I don’t use them as much as I first thought. For IFR I print out the approach plates for the trip. I keep up the subscription to:
-...
Forum: RV-14 11-23-2018, 06:39 PM
Replies: 30
Views: 2,257
Posted By Carl Froehlich
Not sure I understand. You will have the same...

Not sure I understand. You will have the same accessory expenses with both engines.

Some thoughts:
- I flew an RV-14A with the IO-390. My take was the plane needs those extra 10hp.
- The Vanís...
Forum: RV Ongoing Maintenance Issues 11-23-2018, 05:41 PM
Replies: 14
Views: 1,672
Posted By Carl Froehlich
On the first RV the top plate cracked twice just...

On the first RV the top plate cracked twice just like this one. I tried adding an aluminum doubler on the plate (smaller donut covering the mounting holes). It cracked along with the replacement...
Forum: Electrical Systems 11-22-2018, 04:11 PM
Replies: 6
Views: 437
Posted By Carl Froehlich
A lot of options to experiment with measuring...

A lot of options to experiment with measuring current. Here is one: ...
Forum: RV-8/8A 11-22-2018, 08:07 AM
Replies: 23
Views: 3,306
Posted By Carl Froehlich
+1 on Danís comments. Carl

+1 on Danís comments.

Carl
Forum: RV-8/8A 11-20-2018, 08:23 AM
Replies: 10
Views: 902
Posted By Carl Froehlich
On the 8A I used the spring loaded pin latch from...

On the 8A I used the spring loaded pin latch from Avery Tools (I have not found anyone currently selling it). Iíve flown an RV-8 with the catch discussed above and while it works, I just donít like...
Forum: Electrical Systems 11-19-2018, 08:01 AM
Replies: 2
Views: 410
Posted By Carl Froehlich
Depending on current draw and specific diode, you...

Depending on current draw and specific diode, you may have more than a 0.5vdc drop across the diode.

Typical Odyssey batteries need 14.1 to 14.7vdc to fully charge after a deep discharge. Float...
Forum: RV-10 11-18-2018, 02:43 PM
Replies: 16
Views: 1,334
Posted By Carl Froehlich
That is the way to do it. FWIW, I used the Sam...

That is the way to do it.

FWIW, I used the Sam James 6Ē wheel pant on my RV-10 and recommend them. I however stayed with the standard tire.

Carl
Forum: RV General Discussion/News 11-18-2018, 10:14 AM
Replies: 30
Views: 1,911
Posted By Carl Froehlich
On the steam, no steam debate. I built the RV-10...

On the steam, no steam debate. I built the RV-10 with airspeed and altimeter in the center between the two SkyView 10Ē displays, and above the GTN-650. I always use the airspeed for take off and...
Forum: GPS 11-17-2018, 10:06 AM
Replies: 1
Views: 387
Posted By Carl Froehlich
Yep - done some. Easy. Just follow the SkyView...

Yep - done some. Easy. Just follow the SkyView install instructions for the ARINC module and configuration of the SkyView and the GTN-650. If using the GTN-650 for the ADS-B out source, follow the...
Forum: Electrical Systems 11-16-2018, 05:50 PM
Replies: 41
Views: 2,844
Posted By Carl Froehlich
Or keep the flap switch on the stick but...

Or keep the flap switch on the stick but consider:
- Install a micoswitch that turns off the flap motor when the flap is all the way up.
- Install the nice Flap Postioning Systems sold by Vanís. I...
Forum: RV-10 11-15-2018, 12:06 PM
Replies: 22
Views: 1,202
Posted By Carl Froehlich
Iíve posted on this in the past, but perhaps you...

Iíve posted on this in the past, but perhaps you did not see it.

Before you dive into grinding away fiberglass, consider the much simpler option to put the seal on the door. Self adhesive seals...
Forum: RV-7/7A 11-15-2018, 11:59 AM
Replies: 25
Views: 2,044
Posted By Carl Froehlich
So true. I saved the plywood templates from my...

So true. I saved the plywood templates from my first build and have used them on many RVs to find truth to solve rigging problems. Even so, this is a tool for where you start, and not the only...
Forum: RV General Discussion/News 11-15-2018, 08:56 AM
Replies: 8
Views: 581
Posted By Carl Froehlich
Just how dirty (clogged) was your air...

Just how dirty (clogged) was your air filter?

Excessive air filter oil would, if anything, restrict air flow not increase it. This would result in the opposite of what you observed. More likely...
Forum: RV General Discussion/News 11-14-2018, 08:43 PM
Replies: 8
Views: 581
Posted By Carl Froehlich
So you cleaned the air filter and now the engine...

So you cleaned the air filter and now the engine is getting more air. More air and it can use more fuel. This means you will have to lean a lot more to go LOP. Turn on carb heat and the engine...
Forum: RV-7/7A 11-14-2018, 02:14 PM
Replies: 25
Views: 2,044
Posted By Carl Froehlich
I tell a lot of builders that rigging is a big...

I tell a lot of builders that rigging is a big deal - certainly not "one and done" like the instructions imply.

Don't forget that wheel pants and gear leg fairings are part of the rigging process as...
Forum: Electrical Systems 11-14-2018, 10:05 AM
Replies: 12
Views: 766
Posted By Carl Froehlich
Two speed fan(s) are really not needed. One fan...

Two speed fan(s) are really not needed.

One fan (RV-8) or two fans (side by side RVs) under the glareshield with a nice hole pattern instead of a fan screen, then just an on/off switch, Summer...
Forum: RV-10 11-14-2018, 08:50 AM
Replies: 16
Views: 1,334
Posted By Carl Froehlich
Why do you want bigger tires? Carl

Why do you want bigger tires?

Carl
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