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Search: Posts Made By: DanH
Forum: RV General Discussion/News Yesterday, 07:47 AM
Replies: 16
Views: 2,110
Posted By DanH
I think we're all going to be proud to know you. ...

I think we're all going to be proud to know you. Keep up the good work.
Forum: RV General Discussion/News Yesterday, 07:09 AM
Replies: 69
Views: 2,740
Posted By DanH
Want me to post an MRI of my lumbar discs? Ain't...

Want me to post an MRI of my lumbar discs? Ain't no juice left in 'em ;)

Seriously, a few 3.5G pulls and I pay for it all week. The seat is too upright for a tall guy.

BTW, you may have missed a...
Forum: ADS-B Yesterday, 07:02 AM
Replies: 174
Views: 9,935
Posted By DanH
Got to that question yesterday. Powered up a...

Got to that question yesterday.

Powered up a GTX-327 transponder in STANDBY, squawk set to 1200, with the GDL-82 unpowered. After a few moments, I applied power to the GDL-82 while monitoring for...
Forum: RV Ongoing Maintenance Issues 03-17-2019, 09:55 PM
Replies: 62
Views: 29,740
Posted By DanH
They're made by Unipoint, a budget division of...

They're made by Unipoint, a budget division of Bosch, at locations in Taiwan and mainland China. Appears to be a copy of a Denso alternator, model unknown. The regulator is a modified version of a...
Forum: RV-10 03-17-2019, 07:32 AM
Replies: 4
Views: 495
Posted By DanH
Go here, select "Parts Catalog" under...

Go here, select "Parts Catalog" under "Publication Category", click Apply, then scroll down to find your engine model. Download the catalog, then look at the sump...
Forum: RV General Discussion/News 03-15-2019, 07:38 PM
Replies: 18
Views: 1,427
Posted By DanH
Just a reminder...given moderate cowl pressure,...

Just a reminder...given moderate cowl pressure, the carbon adds little. And it brings a potential hardware corrosion problem.
Forum: ADS-B 03-15-2019, 11:22 AM
Replies: 174
Views: 9,935
Posted By DanH
Not really. You can request that the FAA not...

Not really. You can request that the FAA not release your flight information to outside vendors. Your ADS-B transmissions (1090 or 978) need not be anonymous to request privacy under the...
Forum: RV General Discussion/News 03-15-2019, 06:24 AM
Replies: 18
Views: 1,427
Posted By DanH
Cowl pressure can add up. Stock cowls with...

Cowl pressure can add up. Stock cowls with typical baffles will ballpark around 5" H2O at 200 KTAS in a basic VNE descent from cruise. That's about 26 lbs per square foot. Close the exit and it...
Forum: RV General Discussion/News 03-14-2019, 05:37 PM
Replies: 18
Views: 1,427
Posted By DanH
Nope, that's the whole list. Not quite...

Nope, that's the whole list.



Not quite "alternating". As Dave noted, what I described was a carbon sandwich with two plies of fiberglass in the middle.

Have some fun; do a little experiment. ...
Forum: RV General Discussion/News 03-14-2019, 01:16 PM
Replies: 37
Views: 2,627
Posted By DanH
We have lots of UPS and FedEx pilots on this...

We have lots of UPS and FedEx pilots on this board. I'm sure they all thank you very much.

You'll feel better if you think of it as donating a few bucks toward another RV project ;)
Forum: RV General Discussion/News 03-14-2019, 06:49 AM
Replies: 18
Views: 1,427
Posted By DanH
Been a while, but I think I added five plies of...

Been a while, but I think I added five plies of E-glass tape, with attention to shimming as previously noted. Here are the plies with peel ply over the top to fair the tape...
Forum: RV-7/7A 03-14-2019, 06:26 AM
Replies: 46
Views: 13,444
Posted By DanH
First get the cowl completely fitted and...

First get the cowl completely fitted and detailed. Hinges, Skybolts, screws, seam gaps, inlet spigots, everything.

Then get the aluminum dead on. There is no reason to believe the ramps and walls...
Forum: RV-7/7A 03-13-2019, 06:55 AM
Replies: 46
Views: 13,444
Posted By DanH
Beautiful work Paul. It's generally easier to...

Beautiful work Paul.

It's generally easier to start from scratch with a foam form, and the results are better.
Forum: RV-7/7A 03-13-2019, 06:15 AM
Replies: 46
Views: 13,444
Posted By DanH
Scott, later in the process you'll be adding...

Scott, later in the process you'll be adding baffle sealing rubber. If you expect it to lay and seal tightly, now is the time to adjust the relationship between the cowl and the baffle tin.

For...
Forum: ADS-B 03-12-2019, 05:28 PM
Replies: 174
Views: 9,935
Posted By DanH
Credit goes to my bud, who prefers to be,...

Credit goes to my bud, who prefers to be, well...anonymous. Which is pretty darn funny given he helped bring you ADS-B. ;)
Forum: ADS-B 03-12-2019, 04:32 PM
Replies: 174
Views: 9,935
Posted By DanH
Ok, have a buddy with very good connections into...

Ok, have a buddy with very good connections into the ADS-B world. He was kind enough to do a bit of research regarding the time intervals:

Each UAT message frame consists of exactly 1 second and is...
Forum: ADS-B 03-12-2019, 06:37 AM
Replies: 174
Views: 9,935
Posted By DanH
Previously I wrote.... I've been in contact...

Previously I wrote....



I've been in contact with the app developer. He says the current app writes information to the log file "as soon as data is ready", which I understand to mean it is not...
Forum: Safety 03-12-2019, 04:43 AM
Replies: 17
Views: 2,579
Posted By DanH
True story. About 20 years ago one of my friends...

True story. About 20 years ago one of my friends came back from a local flight in his Drifter, and told us he had nearly hit a power line while flying low across some very familiar fields. He was...
Forum: RV General Discussion/News 03-11-2019, 02:53 PM
Replies: 56
Views: 8,850
Posted By DanH
Probably an error. Deltran doesn't sell an...

Probably an error. Deltran doesn't sell an "ion", just LiFeP04 and AGM lead/acid.



In this study three different cell types were externally heated to determine the runaway temperature, without a...
Forum: RV General Discussion/News 03-11-2019, 12:04 PM
Replies: 56
Views: 8,850
Posted By DanH
Recall the recently link to the Tasmanian Jabiru...

Recall the recently link to the Tasmanian Jabiru loss. The battery generated enough heat to set the cabin on fire, through a SS/fiberfrax/plywood sandwich. I've guessed the mechanism was hardware...
Forum: Safety 03-11-2019, 07:31 AM
Replies: 17
Views: 2,579
Posted By DanH
I didn't know that. Cool, thanks. Interesting...

I didn't know that. Cool, thanks.

Interesting to think about. I'll venture to say very low flight over large expanses of water is probably a lot less safe than ripping along over a small lake or a...
Forum: RV-9/9A 03-11-2019, 07:24 AM
Replies: 2
Views: 377
Posted By DanH
Paul, Whatever fits. The best routing makes the...

Paul,
Whatever fits. The best routing makes the breather-to-separator hose as long as possible, and sloped uphill for its entire length. Insulating it with firesleeve helps keep breather gas...
Forum: RV General Discussion/News 03-11-2019, 06:48 AM
Replies: 56
Views: 8,850
Posted By DanH
Regarding that box... The goal is to contain and...

Regarding that box...

The goal is to contain and vent smoke. The box needs to be sealed and externally vented.

In the event of a thermal runaway, the box will get very hot. It would require...
Forum: ADS-B 03-10-2019, 07:23 AM
Replies: 174
Views: 9,935
Posted By DanH
No. I'm using the GDL-82's supplied GPS...

No. I'm using the GDL-82's supplied GPS receiver.



If your previous notes are correct, each line in the .csv output file represents one second. I'll try to confirm independently, but if true,...
Forum: ADS-B 03-09-2019, 02:32 PM
Replies: 174
Views: 9,935
Posted By DanH
Previously I wrote: Well, "trust but verify"...

Previously I wrote:



Well, "trust but verify" wins again.

Turns out the GDL-82, like the Skybeacon, is not anonymous at start up with the anonymous mode enabled (pin 5 grounded).

In the near...
Forum: Safety 03-09-2019, 05:11 AM
Replies: 85
Views: 92,416
Posted By DanH
We can insulate the forward face of course. We...

We can insulate the forward face of course. We can limit or protect steel hardware penetrating the engine-side insulation. However, the real key is that fire (or to be more precise, heat) goes with...
Forum: Safety 03-08-2019, 08:19 AM
Replies: 85
Views: 92,416
Posted By DanH
This report has been linked in at least two...

This report has been linked in at least two threads. Read it again, carefully.

https://www.atsb.gov.au/publications/occurrence-briefs/2018/aviation/ab-2018-124/

Most readers focus on the battery...
Forum: Temp / Test / Misc. (posts deleted after 2 weeks) 03-07-2019, 09:20 PM
Replies: 7
Views: 893
Posted By DanH
Sounds like the guy abused a lithium battery,...

Sounds like the guy abused a lithium battery, with a predictable result.

Here's the interesting part. From the report:

The Tasmanian Fire Service, Fire Investigation Report established the area...
Forum: Painting your RV 03-07-2019, 08:42 AM
Replies: 20
Views: 1,774
Posted By DanH
That's just dirt...flying fuzzies, furry funk. ...

That's just dirt...flying fuzzies, furry funk.

You mentioned building a positive pressure paint booth. Plastic sheet ceiling? They tend to dump dust when the fan is first turned on and the booth...
Forum: Propellers 03-07-2019, 06:56 AM
Replies: 18
Views: 2,989
Posted By DanH
I can't speak factually about the 4-blade for an...

I can't speak factually about the 4-blade for an alternative engine, or about promises and delivery issues.

I am sure a manufacturer who does blade stress telemetry is higher on my list than one...
Forum: RV-10 03-07-2019, 06:02 AM
Replies: 5
Views: 594
Posted By DanH
The separator can will return oil to the sump...

The separator can will return oil to the sump with or without a vacuum tap to the exhaust. They are separate functions.



Oil leaves the engine three ways, (1) leakage, (2) past the rings and valve...
Forum: Propellers 03-07-2019, 05:37 AM
Replies: 18
Views: 2,989
Posted By DanH
I knew Jim was shopping for a telemetry rig. Did...

I knew Jim was shopping for a telemetry rig. Did you happen to notice which brand he was using here?

BTW, it's a big deal gentlemen, sort of a maturity yardstick for a propeller manufacturer. The...
Forum: RV Ongoing Maintenance Issues 03-06-2019, 06:38 PM
Replies: 4
Views: 3,064
Posted By DanH
Bosch point grease...discontinued? Now I feel...

Bosch point grease...discontinued?

Now I feel old.

(deep sigh...)
Forum: Traditional Aircraft Engines 03-06-2019, 06:13 AM
Replies: 60
Views: 10,754
Posted By DanH
Early 390's (all the kit engines like mine, IIRC)...

Early 390's (all the kit engines like mine, IIRC) used a 2-3/8 crank, same as 360's. Only late model 390's have larger 2-5/8 mains. Not sure, but I think Lycoming made the change when they decided...
Forum: RV General Discussion/News 03-05-2019, 10:39 AM
Replies: 9
Views: 875
Posted By DanH
Torsional no problem. The actual concern is...

Torsional no problem. The actual concern is called "critical speed".



A 600 RPM cordless might work well with the 10" wheels. We just didn't want to fool with batteries, and cordless costs more...
Forum: RV General Discussion/News 03-05-2019, 07:57 AM
Replies: 9
Views: 875
Posted By DanH
Tailwheel Dragger

If lucky, we eventually reach the age where "aging pilot population" is no longer a theoretical concern. I have two very good friends who now need a little help dragging their airplanes in and out...
Forum: Electrical Systems 03-03-2019, 05:57 AM
Replies: 41
Views: 1,831
Posted By DanH
That's entirely sensible. However, note there's...

That's entirely sensible. However, note there's nothing very urgent about an alternator failure. The battery supplies electrons without pilot intervention. The pilot action merely re-configures...
Forum: Electrical Systems 03-02-2019, 11:28 AM
Replies: 41
Views: 1,831
Posted By DanH
Well said Otis! +1 for sure.

Well said Otis! +1 for sure.
Forum: RV General Discussion/News 03-01-2019, 12:17 PM
Replies: 25
Views: 5,998
Posted By DanH
J.B. is doing his job, as he should. Business is...

J.B. is doing his job, as he should. Business is business.

While on the subject, remember Superior also sells 320's and 360's. Sometimes less is more.

From the most recent Kitplanes Engine...
Forum: RV General Discussion/News 03-01-2019, 05:49 AM
Replies: 21
Views: 13,711
Posted By DanH
http://www.vansairforce.com/community/showthread.p...

http://www.vansairforce.com/community/showthread.php?t=168491
Forum: RV-10 03-01-2019, 05:42 AM
Replies: 8
Views: 758
Posted By DanH
Pressure within the lower cowl volume is equal to...

Pressure within the lower cowl volume is equal to or higher than freestream pressure.
Forum: ADS-B 02-28-2019, 04:12 PM
Replies: 174
Views: 9,935
Posted By DanH
So Rich, this dongle of which you speak...would...

So Rich, this dongle of which you speak...would this be a good choice?

https://www.amazon.com/NooElec-NESDR-Nano-OTG-microUSB/dp/B0747LVW59

Or suggestions welcome. And what is the name of the app?
Forum: RV Building Tips/Techniques 02-28-2019, 06:43 AM
Replies: 19
Views: 1,259
Posted By DanH
John, I don't think anyone is talking about...

John, I don't think anyone is talking about structural core, intended to remain in flight parts. A fella could make throwaway forms from a stack of stale Rice Krispie treats. However, pink OC foam...
Forum: RV Building Tips/Techniques 02-27-2019, 04:23 PM
Replies: 19
Views: 1,259
Posted By DanH
https://www.homedepot.com/p/Owens-Corning-FOAMULAR...

https://www.homedepot.com/p/Owens-Corning-FOAMULAR-250-2-in-x-48-in-x-8-ft-R-10-Scored-Squared-Edge-Insulation-Sheathing-52DD/202085962
Forum: ADS-B 02-27-2019, 06:31 AM
Replies: 174
Views: 9,935
Posted By DanH
Keep it coming Rich! Anyone know of a way to...

Keep it coming Rich!

Anyone know of a way to look at a Garmin GDL-82 output?
Forum: ADS-B 02-25-2019, 02:25 PM
Replies: 174
Views: 9,935
Posted By DanH
Ahhh, reverse lookup...got it! Sometimes I'm...

Ahhh, reverse lookup...got it!

Sometimes I'm slow...
Forum: ADS-B 02-25-2019, 06:47 AM
Replies: 174
Views: 9,935
Posted By DanH
Just go to the FAA N-number lookup page at...

Just go to the FAA N-number lookup page at faa.gov. Octal and hex codes are posted with your registration information.
Forum: Traditional Aircraft Engines 02-25-2019, 06:35 AM
Replies: 7
Views: 625
Posted By DanH
There are way too many variables to judge mixture...

There are way too many variables to judge mixture from fuel flow. Instead, determine degrees EGT in relation to peak.

Start reading at post #35. Study the...
Forum: Traditional Aircraft Engines 02-24-2019, 12:26 PM
Replies: 10
Views: 941
Posted By DanH
Remember, every cold start will probably put some...

Remember, every cold start will probably put some water in the catch can. The initial breather flow isn't hot enough to put it in vapor phase.



Case evacuators have been around racing a long time....
Forum: Traditional Aircraft Engines 02-24-2019, 05:52 AM
Replies: 10
Views: 941
Posted By DanH
https://www.danhorton.net/Articles/Separator-or-Co...

https://www.danhorton.net/Articles/Separator-or-Condenser.pdf
Forum: Fiberglass 02-22-2019, 04:37 PM
Replies: 5
Views: 754
Posted By DanH
Why not simply reduce the excess thickness on the...

Why not simply reduce the excess thickness on the upper cowl?
Forum: RV-14 02-22-2019, 08:28 AM
Replies: 4
Views: 680
Posted By DanH
It's a firewall. It should be air-tight for...

It's a firewall. It should be air-tight for several reasons, not the least of which is carbon monoxide. Sealant should be trapped between flanges, or filleted on the forward, engine side of the...
Forum: Alternative Engines 02-21-2019, 07:31 PM
Replies: 302
Views: 37,425
Posted By DanH
Couplers are engineered with specific properties....

Couplers are engineered with specific properties. They have been used successfully in thousands of different applications, and properly applied, they are excellent. However, picking the wrong one...
Forum: ADS-B 02-20-2019, 05:16 PM
Replies: 174
Views: 9,935
Posted By DanH
Ok, so if I read correctly, an FDL-978 owner is...

Ok, so if I read correctly, an FDL-978 owner is not anonymous for the first 15 seconds after start up....and FreeFlight considers it to be a requirement.

So, back to the GDL-82. Assume pin 5 is...
Forum: Traditional Aircraft Engines 02-18-2019, 06:03 PM
Replies: 11
Views: 1,736
Posted By DanH
Fatigue resistance. Pretty sure they rank (best...

Fatigue resistance. Pretty sure they rank (best to worst) kevlar, glass, carbon. I'm too lazy to look up the numbers. If the membrane would be subject to a lot of flexing, it might be worth...
Forum: ADS-B 02-18-2019, 03:02 PM
Replies: 174
Views: 9,935
Posted By DanH
The Drivers Privacy Protection Act has been in...

The Drivers Privacy Protection Act has been in place since 1994.

As a licensed dealer, I'm also a designated agent for my state's DMV. I can tap the database for an owner's name and address if I...
Forum: Traditional Aircraft Engines 02-18-2019, 01:45 PM
Replies: 11
Views: 1,736
Posted By DanH
It would be a better choice, technical speaking....

It would be a better choice, technical speaking. On the other hand, (1) the fiberglass is hanging in there pretty well in the duct application, and (2) I'm too cheap to buy the special scissors which...
Forum: Traditional Aircraft Engines 02-18-2019, 08:08 AM
Replies: 11
Views: 1,736
Posted By DanH
Soft Spot Plenum Lid

RV-8 builders know stuffing an angle valve Lycoming into an RV-8 cowl results in very tight engine to cowl clearance above the front cylinder corners, and down the left side. It gets worse with a...
Forum: Traditional Aircraft Engines 02-18-2019, 07:24 AM
Replies: 35
Views: 7,737
Posted By DanH
The rest of the story. Previously I...

The rest of the story. Previously I wrote:



The answer seems to be ....both.

With the VIP acro mounts, the airframe shake below 2400 felt like an out of balance prop. Vic had done a dynamic...
Forum: RV General Discussion/News 02-17-2019, 05:05 AM
Replies: 24
Views: 1,758
Posted By DanH
Did a first class job of it too. Nice work.

Did a first class job of it too. Nice work.
Forum: ADS-B 02-16-2019, 12:33 PM
Replies: 174
Views: 9,935
Posted By DanH
Rage, rage against the dying of the light.

Rage, rage against the dying of the light.
Forum: Alternative Engines 02-15-2019, 01:33 PM
Replies: 96
Views: 10,037
Posted By DanH
The driving requirement seems to be a need for...

The driving requirement seems to be a need for 130F fuel at injection delivery. The question is thus how to heat the fuel.

Having brainstormed a fuel-cooled system, sit down and map out system...
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