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Search: Posts Made By: Carl Froehlich
Forum: RV-8/8A 12-02-2021, 09:06 AM
Replies: 18
Views: 751
Posted By Carl Froehlich
No, the SkyView system has the dual ADHARS...

No, the SkyView system has the dual ADHARS modules mounted just aft of the rear baggage compartment. But, if a builder wants to add a stand alone AV-30 or such, disconnecting the associated pitot...
Forum: RV-8/8A 12-02-2021, 08:13 AM
Replies: 18
Views: 751
Posted By Carl Froehlich
Exactly, a center panel that comes out of the...

Exactly, a center panel that comes out of the plane in ~15 minutes to be done on the bench. Not hard, it just takes some planning. The trick is to divide everything into what stays in the plane and...
Forum: RV-8/8A 12-01-2021, 05:23 PM
Replies: 4
Views: 386
Posted By Carl Froehlich
+1. Of late I’ve been frequently commuting IFR...

+1.

Of late I’ve been frequently commuting IFR in my RV-8. Climb until it gets smooth - seems to work well.

Carl
Forum: Glass Cockpit 12-01-2021, 05:20 PM
Replies: 5
Views: 201
Posted By Carl Froehlich
I’ve been flying IFR with dual SkyView displays...

I’ve been flying IFR with dual SkyView displays and a GTN-650 for almost a decade. The integration is well done. I assume the Garmin 175 would be the same.

Carl
Forum: RV-10 12-01-2021, 12:52 PM
Replies: 19
Views: 1,065
Posted By Carl Froehlich
There are a lot of aftermarket options for the...

There are a lot of aftermarket options for the RV-10. For me, none provide reason to not use the stock panel. Keep in mind that many, if not most builders will want to change something on the panel...
Forum: RV Ongoing Maintenance Issues 12-01-2021, 12:45 PM
Replies: 6
Views: 325
Posted By Carl Froehlich
Agree Dan - but for the vast majority of builders...

Agree Dan - but for the vast majority of builders gaining engine efficiency in cruise would override building fire breathing “time to climb” RVs.

For those running such high compression engines I...
Forum: RV-10 12-01-2021, 11:33 AM
Replies: 12
Views: 1,127
Posted By Carl Froehlich
Translating this means you want to buy a flying...

Translating this means you want to buy a flying RV-10. 2-4 weeks is trivial for any point in an RV-10 build.

Carl
Forum: Glass Cockpit 12-01-2021, 11:21 AM
Replies: 6
Views: 480
Posted By Carl Froehlich
The red cube install instructions are good, and...

The red cube install instructions are good, and if followed seem to eliminate such problems.

Here is how I mounted it in the current RV-8 - this placement satisfies the install...
Forum: RV Ongoing Maintenance Issues 12-01-2021, 11:12 AM
Replies: 6
Views: 325
Posted By Carl Froehlich
The six cylinder pMag (200 series) can be...

The six cylinder pMag (200 series) can be programmed to do this as well (why anyone would want to is another topic). Programming this pMag is simple, and done during installation. Changing it at...
Forum: COMM 11-30-2021, 06:03 PM
Replies: 47
Views: 4,560
Posted By Carl Froehlich
No. My one and only experience with this radio...

No. My one and only experience with this radio demonstrated RF front end selectivity shortfalls. I cannot say I have seen this exact problem as the radio was not my primary comm in the RV-14 I...
Forum: COMM 11-30-2021, 05:36 PM
Replies: 47
Views: 4,560
Posted By Carl Froehlich
Same problem across multiple installs. The only...

Same problem across multiple installs. The only common aspect is the GTR200 radio itself.

Carl
Forum: RV models of the future (RV-??) 11-30-2021, 05:31 PM
Replies: 43
Views: 3,752
Posted By Carl Froehlich
Nuclear power for bombers was a massive...

Nuclear power for bombers was a massive development effort in the late 50s. Common sense finally prevailed and the program was killed.

Carl
Forum: RV-14 11-30-2021, 02:47 PM
Replies: 2
Views: 332
Posted By Carl Froehlich
Thanks, that was the AirFlow Systems cooler I...

Thanks, that was the AirFlow Systems cooler I used on my first RV-10, so now I can just get it from Van’s for the new RV-10.

I don’t have hard data but believe this cooler is a better choice over...
Forum: Electrical Systems 11-30-2021, 11:09 AM
Replies: 30
Views: 1,174
Posted By Carl Froehlich
I found the standard, cheap Harbor Freight meter...

I found the standard, cheap Harbor Freight meter will do everything needed for an RV build, and then some. I have 3-4 dispersed in the various tool boxes.

But - when I really want to measure...
Forum: RV-14 11-30-2021, 09:42 AM
Replies: 2
Views: 332
Posted By Carl Froehlich
RV-14 FWF kit

I note on Van’s store the listed RV-14 oil cooler photo looks to be an AirFlow Systems cooler. I assume this will be the cooler provided in the RV-14 FWF kit.

Can someone verify this? If so, what...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 11-29-2021, 07:57 PM
Replies: 2
Views: 202
Posted By Carl Froehlich
The existing 5/8” rib holes (that get a snap...

The existing 5/8” rib holes (that get a snap bushing per the plans) will also take a standard 1/2” ID plastic water pipe (leaving out the snap bushings). This makes a good wing conduit and will pass...
Forum: RV Building Tips/Techniques 11-28-2021, 06:53 PM
Replies: 4
Views: 250
Posted By Carl Froehlich
Flute, bend, then flute again. Carl

Flute, bend, then flute again.

Carl
Forum: RV-10 11-27-2021, 06:28 PM
Replies: 20
Views: 2,174
Posted By Carl Froehlich
Ten years ago my all in cost for a slow build...

Ten years ago my all in cost for a slow build RV-10 was ~$153K. This included a full, dual screen IFR panel, new engine and prop from Van’s, simple interior and $3K to cover the PPG urethane...
Forum: RV-14 11-26-2021, 08:40 PM
Replies: 8
Views: 708
Posted By Carl Froehlich
I like the PCU-5000X governor. I installed it in...

I like the PCU-5000X governor. I installed it in an 8A, 10 and an 8.

I tend to use AirFlow oil coolers. On the RV-10 I stayed with one that has the same dimensions as the Van’s FWF kit cooler. ...
Forum: Traditional Aircraft Engines 11-26-2021, 08:25 PM
Replies: 36
Views: 2,991
Posted By Carl Froehlich
More data is needed, but the one time I was...

More data is needed, but the one time I was associated with a similar problem it was tracked down to air coming in the fuel line. On that engine the air leak was the fuel pump seals leaking (non...
Forum: RV-10 11-26-2021, 09:18 AM
Replies: 29
Views: 4,127
Posted By Carl Froehlich
Full span tanks - 120 gal total. I do not have...

Full span tanks - 120 gal total. I do not have first hand knowledge but I understand the plane was repairable (new weldments and new gear legs) and the wing skins were not get damaged.

Carl
Forum: RV-10 11-26-2021, 09:10 AM
Replies: 29
Views: 4,127
Posted By Carl Froehlich
Sure - but for me I prefer a T fitting on a wing...

Sure - but for me I prefer a T fitting on a wing fuel line in the cabin that I can cap when the ferry tank is not in the plane. That and I only us the Andair fuel valve for my planes.

Add to that...
Forum: RV-10 11-26-2021, 08:50 AM
Replies: 29
Views: 4,127
Posted By Carl Froehlich
I urge caution when adding fuel to the wings...

I urge caution when adding fuel to the wings (like replace the outboard leading edge with another tank). An RV-10 recently had the main gear collapse when landing with full fuel.

The RV-10 does...
Forum: RV-14 11-26-2021, 08:13 AM
Replies: 8
Views: 708
Posted By Carl Froehlich
I suggest all take a careful look at what comes...

I suggest all take a careful look at what comes in the FWF kit and delete those items that you may want replace with a different model. Such as:
- Alternator
- Oil Cooler
- Prop Governor

Carl
Forum: RV-8/8A 11-25-2021, 09:53 AM
Replies: 19
Views: 8,512
Posted By Carl Froehlich
Corrosion?

For you composite experts. Standard use of carbon cloth on our planes it to have it impregnated with epoxy resin. Assuming that there is no raw carbon to aluminum contact because of the resin, does...
Forum: RV-14 11-25-2021, 09:04 AM
Replies: 12
Views: 4,428
Posted By Carl Froehlich
A standard back rivet plate with a piece of wood...

A standard back rivet plate with a piece of wood as a hinge point works well for me.

Carl
Forum: RV Building Tips/Techniques 11-24-2021, 09:25 PM
Replies: 11
Views: 1,361
Posted By Carl Froehlich
Exactly. I fixed several oversized holes in...

Exactly. I fixed several oversized holes in someone’s HS (bent drill bit and a overspeed drill) by drilling to #30, 1/8’ dimple and flush #4 rivets.

No one ever noticed.

Carl
Forum: Electronic Ignition Systems 11-24-2021, 07:59 AM
Replies: 37
Views: 3,877
Posted By Carl Froehlich
Rule #4 of submarine work, you have to be smarter...

Rule #4 of submarine work, you have to be smarter than the equipment you operate…..

The six cylinder pMag must be set during install for:
- Base timing (normally 20 degrees for angle head, 25...
Forum: RV-7/7A 11-23-2021, 08:05 AM
Replies: 10
Views: 742
Posted By Carl Froehlich
I used a standard, two pipe cross over on the...

I used a standard, two pipe cross over on the RV-8A. On the RV-8 I used the four pipe. Both were from Vetterman.

The four pipe has a slight edge on the “coolness” scale. Performance is very good,...
Forum: Primers 11-23-2021, 08:01 AM
Replies: 8
Views: 565
Posted By Carl Froehlich
Just do not get an oilless compressor. The noise...

Just do not get an oilless compressor. The noise will drive you nuts in short order.

Carl
Forum: Electrical Systems 11-22-2021, 08:52 PM
Replies: 1
Views: 201
Posted By Carl Froehlich
Yep - starter solenoid on the firewall. Use a 10...

Yep - starter solenoid on the firewall. Use a 10 amp breaker and push to start button to provide power to the solenoid.

Stein sells a nice push button start switch.

Carl
Forum: RV Building Tips/Techniques 11-22-2021, 02:20 PM
Replies: 8
Views: 649
Posted By Carl Froehlich
The trick is to flute the ribs, straighten the...

The trick is to flute the ribs, straighten the flanges, then flute again until they are perfectly straight. A touch on the Scotch Brite wheel on the rib tips flanges (on the inside where the flat...
Forum: RV-8/8A 11-22-2021, 01:14 PM
Replies: 17
Views: 1,390
Posted By Carl Froehlich
I would think you would have the exact same thing...

I would think you would have the exact same thing happen for a firewall mounted battery - so location is not an issue unless you think the wire run itself is a risk. But to answer then specific...
Forum: Safety 11-22-2021, 12:20 PM
Replies: 15
Views: 1,058
Posted By Carl Froehlich
The “Three Board” system here at Dogwood (VA42)...

The “Three Board” system here at Dogwood (VA42) and Shannon (KEZF) is very good. We painted the boards neon orange and they are very visible with standard landing lights. We later took the extra...
Forum: RV-14 11-22-2021, 08:37 AM
Replies: 3
Views: 510
Posted By Carl Froehlich
I can only assume Van’s put the ELT back there...

I can only assume Van’s put the ELT back there for W&B considerations. To me these seems to be a less than optimal environment.

If a builder is considering two batteries, locating one aft using the...
Forum: RV-10 11-21-2021, 04:01 PM
Replies: 15
Views: 1,163
Posted By Carl Froehlich
I got a couple of the larger pins from Van’s...

I got a couple of the larger pins from Van’s (SSP-120).

On the first RV-10 I chucked up a pin in the drill press and used a angle grinder with to taper 10” or so. This as a pain as the SS was...
Forum: RV-10 11-20-2021, 01:57 PM
Replies: 15
Views: 1,755
Posted By Carl Froehlich
If built per plans, the stock RV-10 heat system...

If built per plans, the stock RV-10 heat system produces far more heat than needed.

On my first RV-10 I put a 3/4” restrictor on each 2” baffle SCAT hose flange. Even that was more heat than I...
Forum: Primers 11-20-2021, 01:06 PM
Replies: 8
Views: 565
Posted By Carl Froehlich
Final paint needs the most air. I painted an...

Final paint needs the most air. I painted an RV-10 and a RV-8 in my hangar paint booth with a compressor like this and never ran out of...
Forum: RV General Discussion/News 11-20-2021, 10:02 AM
Replies: 5
Views: 472
Posted By Carl Froehlich
Did this on an 8A. Do not remove the side panel,...

Did this on an 8A. Do not remove the side panel, just put the new side panel over the old one.

The panel screws will hold it in on the inboard side. Once you mount the new switches and such, they...
Forum: Flight Testing 11-20-2021, 09:53 AM
Replies: 30
Views: 3,469
Posted By Carl Froehlich
I have posted about a similar (and very...

I have posted about a similar (and very repeatable) problem on an RV-14A. For his plane the indicated fuel flow went above actual starting at 7K’ or so.

The root cause was never clearly identified...
Forum: RV Building Tips/Techniques 11-18-2021, 06:12 PM
Replies: 4
Views: 345
Posted By Carl Froehlich
Yes, by setting the low voltage alarm set point. ...

Yes, by setting the low voltage alarm set point. You will get both a visual and audio alarm.

Carl
Forum: RV Building Tips/Techniques 11-18-2021, 04:11 PM
Replies: 4
Views: 345
Posted By Carl Froehlich
Assuming you are also using the associated...

Assuming you are also using the associated SkyView EMS, no.

Carl
Forum: RV-10 11-18-2021, 03:23 PM
Replies: 11
Views: 1,193
Posted By Carl Froehlich
I used to do that. Now I just put the paint gun...

I used to do that. Now I just put the paint gun nozzle into whatever tube I’m priming until I’m satisfied the inside is covered. For long push tubes I do this from both sides. This still makes a...
Forum: RV-10 11-18-2021, 03:13 PM
Replies: 11
Views: 1,193
Posted By Carl Froehlich
Nope, I primed the inside. Never had a use for...

Nope, I primed the inside. Never had a use for Corrosion X, but I’m told it tends to migrate with time.

Carl
Forum: RV-10 11-18-2021, 11:24 AM
Replies: 11
Views: 1,193
Posted By Carl Froehlich
Steel on steel connections require grease if you...

Steel on steel connections require grease if you ever want to take them apart. The step is example, the gear legs into weldment is another.

Grease is cheap, use more…..

Carl
Forum: RV-10 11-16-2021, 10:13 AM
Replies: 31
Views: 2,517
Posted By Carl Froehlich
Shoot fire - I got my IFR exam in my RV-10 with...

Shoot fire - I got my IFR exam in my RV-10 with dual SkyView displays (one on each side) that included the left SkyView turned off (the partial panel part of the ride). It was trivial to do a full,...
Forum: Traditional Aircraft Engines 11-15-2021, 05:41 PM
Replies: 12
Views: 756
Posted By Carl Froehlich
+1 on just pulling the breaker from time to time....

+1 on just pulling the breaker from time to time. No need to complicate this.

Carl
Forum: Electrical Systems 11-15-2021, 01:09 PM
Replies: 13
Views: 3,276
Posted By Carl Froehlich
Yep, very pricey. The bigger issue is what do...

Yep, very pricey.

The bigger issue is what do you get? If your goal it to take an old school electrical system and make it solid state, this and the associated VPX box will do it. I consider this...
Forum: RV-10 11-15-2021, 09:35 AM
Replies: 31
Views: 2,517
Posted By Carl Froehlich
You do have all the bells and whistles. Some...

You do have all the bells and whistles. Some thoughts (it is your panel so take them with a grain of salt):
- I consider the larger display on the 750 wasted as you will not use it over the EFIS...
Forum: RV General Discussion/News 11-14-2021, 11:31 AM
Replies: 2
Views: 387
Posted By Carl Froehlich
The RV-10 elevators are not in perfect balance...

The RV-10 elevators are not in perfect balance (if built per plans). The good folks at Van’s told me this was by design. The reason I called was to get the elevators to balance on the hinge would...
Forum: Electrical Systems 11-12-2021, 10:34 AM
Replies: 17
Views: 1,664
Posted By Carl Froehlich
Do you have any backup batteries? Any chance you...

Do you have any backup batteries?

Any chance you installed the replacement PC-680 battery backwards?

Carl
Forum: RV-10 11-11-2021, 01:08 PM
Replies: 11
Views: 1,696
Posted By Carl Froehlich
Here is how I mounted it for an RV-10. The...

Here is how I mounted it for an RV-10. The breather hose came from Anti-Spat as well. It makes a soft 180 degree bend to the engine breather connection. On this install I made an adapter to...
Forum: Glass Cockpit 11-11-2021, 12:45 PM
Replies: 10
Views: 1,114
Posted By Carl Froehlich
But: GNC255 is listed at $4126 (no harness). I...

But:
GNC255 is listed at $4126 (no harness). I consider this way overpriced.
The MGL option (remote nav, remote comm and a control head for each) is at $1960.

Not a trivial savings.

I’m thinking...
Forum: RV-14 11-10-2021, 08:21 PM
Replies: 13
Views: 2,396
Posted By Carl Froehlich
There is no electrical reason to use shielded...

There is no electrical reason to use shielded cable for trim servos - but that is what I use. As I mentioned, a single, four #22 conductor shielded cable has all the wires you need, and the single...
Forum: RV-14 11-09-2021, 12:53 PM
Replies: 14
Views: 1,250
Posted By Carl Froehlich
My experience is ordering all the avionic...

My experience is ordering all the avionic components as a package deal provided such discounts as well. Here Stein is a rock star!

Do not overlook the benefit of doing the work yourself. The...
Forum: RV-14 11-09-2021, 09:32 AM
Replies: 14
Views: 1,250
Posted By Carl Froehlich
You need the engine to do the cowl and baffles. ...

You need the engine to do the cowl and baffles. Order the engine.

If you do not have a prop hub to fit the cowl, then order the prop when you order the engine. I used an old Hartzell hub for cowl...
Forum: COMM 11-08-2021, 09:20 AM
Replies: 15
Views: 812
Posted By Carl Froehlich
Not much to go on, but I’ll guess this is...

Not much to go on, but I’ll guess this is intermod (cross talk from a nearby transmitter). For example you are on the ramp listening to Unicom, but near the ADIS transmit antenna.

Carl
Forum: RV Ongoing Maintenance Issues 11-08-2021, 09:09 AM
Replies: 12
Views: 803
Posted By Carl Froehlich
Don’t ever use the supplied micro molex plugs...

Don’t ever use the supplied micro molex plugs provided in the wiring kit.

Carl
Forum: RV-8/8A 11-05-2021, 04:52 PM
Replies: 2
Views: 392
Posted By Carl Froehlich
Some like to mount the wings with the tanks off,...

Some like to mount the wings with the tanks off, others like to put the tanks on first. Builder’s choice but I believe it all goes easier if the tanks are on the wings.

While the tanks are still...
Forum: RV Ongoing Maintenance Issues 11-05-2021, 01:33 PM
Replies: 7
Views: 459
Posted By Carl Froehlich
Some thoughts. The rough engine points to half...

Some thoughts.

The rough engine points to half the plugs not working. If you have a spare coil (all Lightspeed users need to have one, or better two, in the plane), install it. See if that solves...
Forum: Electrical Systems 11-04-2021, 05:18 PM
Replies: 4
Views: 539
Posted By Carl Froehlich
Assuming you are using LED Nav/Strobes (and if...

Assuming you are using LED Nav/Strobes (and if not reconsider), then for each Nav/Strobe run a single three #20 conductor shielded wire (available from Stein). The three #20 wires are:
- Nav light...
Forum: GPS 11-03-2021, 09:25 PM
Replies: 12
Views: 749
Posted By Carl Froehlich
+1. I did four full IFR panel installs with this...

+1. I did four full IFR panel installs with this tool.

Carl
Forum: Glass Cockpit 11-03-2021, 11:12 AM
Replies: 12
Views: 965
Posted By Carl Froehlich
Walt - not how the design works. Now consider my...

Walt - not how the design works.

Now consider my experience with RVs having absolutely dead or less than full capacity backup batteries, then overlay the risk of a pilot having an electrically...
Forum: Glass Cockpit 11-03-2021, 08:22 AM
Replies: 12
Views: 965
Posted By Carl Froehlich
Yep - POH immediate action on any electrical...

Yep - POH immediate action on any electrical failure is to open both Master Solenoids (there is one on each battery). This isolates the “fat” wires in the plane from power, including the alternator....
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