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Search: Posts Made By: DanH
Forum: RV General Discussion/News Today, 12:50 PM
Replies: 3
Views: 182
Posted By DanH
Otis, what parts do you hope to preserve with...

Otis, what parts do you hope to preserve with circulation?
Forum: RV-14 Yesterday, 02:25 PM
Replies: 18
Views: 927
Posted By DanH
A small amount of fuel from the sniffle after...

A small amount of fuel from the sniffle after shutdown would suggest a standard Bendix type injection. Marvin and I don't get those drips. He has a SDS EFI, and I have an AFP constant flow with a...
Forum: RV-7/7A Yesterday, 09:46 AM
Replies: 28
CHT
Views: 1,832
Posted By DanH
Colin, remember a plenum is a sealing device,...

Colin, remember a plenum is a sealing device, nothing more. Sounds like you've made sure it seals well, which is good.

There are other requirements for good cooling. You need good conversion of...
Forum: RV General Discussion/News Yesterday, 05:37 AM
Replies: 56
Views: 4,046
Posted By DanH
This should fire up the 'ole rotating...

This should fire up the 'ole rotating beacon:

https://airflowperformance.com/wp-content/uploads/2016/11/INJECTOR-NOZZLES.pdf

Lots of ram air rail photos in Appendix...
Forum: RV General Discussion/News 08-20-2019, 06:39 AM
Replies: 56
Views: 4,046
Posted By DanH
That is my conclusion so far. Any bleed air...

That is my conclusion so far.



Any bleed air pressure source based on airspeed has the same limitation; in general terms, it can't be a lot higher than manifold pressure at WOT. Still, we can...
Forum: RV General Discussion/News 08-19-2019, 04:55 PM
Replies: 24
Views: 1,660
Posted By DanH
Do those alternators work well with the battery...

Do those alternators work well with the battery disconnected?
Forum: RV General Discussion/News 08-19-2019, 03:50 PM
Replies: 56
Views: 4,046
Posted By DanH
The most recent measurements were taken with...

The most recent measurements were taken with turbo injectors and rails.

Lots of folks have tried it, but nobody actually measured anything. Turns out (when measured with rails) there is only one...
Forum: RV General Discussion/News 08-19-2019, 12:32 PM
Replies: 56
Views: 4,046
Posted By DanH
You're running constant flow injection on your...

You're running constant flow injection on your 390? I recently made some measurements. Down low, throttle partially closed, the injector bleed air deltaP is high, so atomization is good. Up high,...
Forum: Electronic Ignition Systems 08-19-2019, 08:56 AM
Replies: 204
Views: 77,092
Posted By DanH
Nice work, thanks!

Nice work, thanks!
Forum: RV General Discussion/News 08-19-2019, 08:41 AM
Replies: 56
Views: 4,046
Posted By DanH
Why do you say so Bill? My own sweet spot is...

Why do you say so Bill? My own sweet spot is peak EGT or very slightly LOP. Here I'm defining "sweet" as "lowest fuel flow possible without notable airspeed loss". It is not the most economical,...
Forum: Electrical Systems 08-18-2019, 10:26 AM
Replies: 9
Views: 909
Posted By DanH
It's quite common to fear the unknown. It means...

It's quite common to fear the unknown. It means you're normal.

There is no reason for electrical matters to remain unknown. Education and recreation, remember?

If you haven't already, study...
Forum: RV-14 08-17-2019, 03:41 PM
Replies: 39
Views: 3,194
Posted By DanH
Can't speak for Bill, but I will back him here. ...

Can't speak for Bill, but I will back him here. Base 20, advancing to 25 with decreasing MP appears to be right within a mixture range of best power to around 25 LOP. I have dual maps, but mostly...
Forum: Electrical Systems 08-17-2019, 09:51 AM
Replies: 9
Views: 909
Posted By DanH
Useless YouTube blather. Not enough information,...

Useless YouTube blather. Not enough information, and there is no telling what someone may have done to old Cherokee. Ignore it. Build to plans, install wiring per Vans or Nuckols.
Forum: RV-14 08-16-2019, 04:55 PM
Replies: 17
Views: 675
Posted By DanH
Excellent. Yes, fly more and run it harder. ...

Excellent. Yes, fly more and run it harder. Need combustion pressure to apply radial ring pressure.
Forum: RV-14 08-16-2019, 02:24 PM
Replies: 17
Views: 675
Posted By DanH
A 20 F spread is pretty common fleetwide. Fly a...

A 20 F spread is pretty common fleetwide. Fly a 100 hours or so, then tinker with leveling CHTs if you wish. Won't hurt anything if you don't.



Confirm you have a jumper wire between terminals...
Forum: ADS-B 08-16-2019, 06:28 AM
Replies: 37
Views: 2,981
Posted By DanH
Set aside the societal debate, and possible 1090...

Set aside the societal debate, and possible 1090 revisions. At the fundamental level, consider the ordinary consumer issue. Garmin advertised the GDL-82 as having an anonymous function, not...
Forum: Fiberglass 08-15-2019, 03:32 PM
Replies: 107
Views: 137,315
Posted By DanH
So I'm told. It's an experiment, and may explode...

So I'm told. It's an experiment, and may explode any minute.

So, more than a decade ago, why did I think it would work? Here's reality. The tips are cheap polyester glass. The coefficient of...
Forum: Fiberglass 08-15-2019, 08:09 AM
Replies: 107
Views: 137,315
Posted By DanH
No fabric plies at all. Tips bonded with Hysol,...

No fabric plies at all. Tips bonded with Hysol, riveted wet, gaps filled with micro. Still doing fine at 875 hours.
Forum: RV General Discussion/News 08-15-2019, 08:01 AM
Replies: 56
Views: 4,046
Posted By DanH
Let's assume good reciprocating and rotational...

Let's assume good reciprocating and rotational balance, mechanical issues not subject to inflight control. The two smoothness factors which may be influenced by the pilot are cycle-to-cycle...
Forum: RV General Discussion/News 08-14-2019, 05:40 PM
Replies: 170
Views: 103,969
Posted By DanH
The top photo is the Air Force target area in...

The top photo is the Air Force target area in 5314A. Zoom in and be amused. You know you made a wrong turn when your GPS highway nav puts you on "Strafe Road", the dead ends at far right :eek:
Forum: RV Building Tips/Techniques 08-14-2019, 05:02 PM
Replies: 17
Views: 1,058
Posted By DanH
Replacing the steel elbow and nipple? No you...

Replacing the steel elbow and nipple? No you can't; in this example the fittings are structural. To re-route the inlet to the flow divider, you'll need the plate I mentioned, re Mother of...
Forum: RV Building Tips/Techniques 08-14-2019, 09:51 AM
Replies: 17
Views: 1,058
Posted By DanH
Walt, Ralph, lots of good ways to skin a cat. ...

Walt, Ralph, lots of good ways to skin a cat. Care to illustrate the where and how?

My own is currently below the cylinders, hard mounted to the case. I have an AFP purge valve at the divider,...
Forum: RV General Discussion/News 08-13-2019, 11:07 AM
Replies: 13
Views: 980
Posted By DanH
Similar before adding a case evac system and...

Similar before adding a case evac system and separator, now closer to 10.



Listen....that was the sound of another hoary myth imploding.



Never been below 5. I do see oil temperature creep up...
Forum: Fuel Injection Systems 08-13-2019, 08:44 AM
Replies: 8
Views: 777
Posted By DanH
You ain't got a snowball's chance. Everybody...

You ain't got a snowball's chance. Everybody knows them other guys make 10% more horsepower.

V
V
V
V
V
V
V
V
Forum: RV General Discussion/News 08-12-2019, 02:58 PM
Replies: 22
Views: 1,651
Posted By DanH
So he gave you the Shell Answer ;) I keed, I...

So he gave you the Shell Answer ;)

I keed, I keed!

Seriously, did he say why? It's all about the why.
Forum: RV General Discussion/News 08-12-2019, 12:20 PM
Replies: 22
Views: 1,651
Posted By DanH
Was your contact someone from the formulation...

Was your contact someone from the formulation side, or a random pick from the booth staff?
Forum: RV General Discussion/News 08-12-2019, 11:28 AM
Replies: 41
Views: 5,082
Posted By DanH
Larry, I've thought about it a good bit, as well...

Larry, I've thought about it a good bit, as well as torn down engine pumps and a red cube.

The cube's impeller is a very light plastic part. It acts as a shutter for a light beam; no...
Forum: RV General Discussion/News 08-12-2019, 07:59 AM
Replies: 19
Views: 1,291
Posted By DanH
Not much point in having a p-mag if you're not...

Not much point in having a p-mag if you're not sure the internal generator works.

I have found a dead one during a pre-buy.
Forum: Traditional Aircraft Engines 08-11-2019, 03:20 PM
Replies: 7
Views: 464
Posted By DanH
I generally find peak from the lean side, but I...

I generally find peak from the lean side, but I won't claim it's "better".

That said, I agree with Carl and Ed. First flights, leave it rich, mind the EIS for limits, and run the snot out of it. ...
Forum: Electronic Ignition Systems 08-11-2019, 02:39 PM
Replies: 8
Views: 364
Posted By DanH
I assume you meant to say "not very...

I assume you meant to say "not very significant"

+2 on instrument resolution. Most of the ignitions smooth between integer values, and the Engine Bridge probably rounds up or down, reporting only...
Forum: Traditional Aircraft Engines 08-11-2019, 12:03 PM
Replies: 7
Views: 464
Posted By DanH
Go here, first chart, distributed by...

Go here, first chart, distributed by Lycoming:

http://www.vansairforce.com/community/showpost.php?p=1288501&postcount=41

Best power mixture is graphed at 100 to 150 ROP EGT.



Depends on how we...
Forum: Trip Write-ups 08-11-2019, 09:43 AM
Replies: 55
Views: 8,138
Posted By DanH
Scott, it seems you've lost your dad. My...

Scott, it seems you've lost your dad. My condolences.
Forum: Electrical Systems 08-11-2019, 09:35 AM
Replies: 13
Views: 692
Posted By DanH
So you're saying the value is the ability to...

So you're saying the value is the ability to predict future failure.

Light GA aircraft are relatively simple...or can be. Could you provide a list of components we might monitor which are flight...
Forum: RV General Discussion/News 08-11-2019, 06:59 AM
Replies: 22
Views: 1,651
Posted By DanH
Doesn't appear to be an "expiration date". It's...

Doesn't appear to be an "expiration date". It's a re-test date based on NATO Standardization Agreement STANAG 3149 (Edition 8) entitled “Minimum Quality Surveillance of Petroleum Products.

Read...
Forum: Electrical Systems 08-11-2019, 06:13 AM
Replies: 13
Views: 692
Posted By DanH
I like Tom's approach (KIS), but have to...

I like Tom's approach (KIS), but have to ask...

Continuous current monitoring for every component has long been a key "functionality" of a well known all-in-one box I shall not mention.

Oren is...
Forum: Safety 08-10-2019, 07:54 AM
Replies: 16
Views: 2,981
Posted By DanH
This is really interesting. I'd say most of us...

This is really interesting. I'd say most of us who live and fly in the Southeast don't put much thought into serious survival gear. A lot of the terrain is row crop, pasture, or populated enough to...
Forum: Traditional Aircraft Engines 08-10-2019, 06:37 AM
Replies: 16
Views: 1,774
Posted By DanH
There is no drawback for the break-in...

There is no drawback for the break-in application. You will see lower CHT and increased EGT. Do not be concerned about the EGT increase. It is just an artifact of slightly higher pressure at valve...
Forum: RV General Discussion/News 08-10-2019, 06:02 AM
Replies: 4
Views: 442
Posted By DanH
Rob, thank you for the follow up. This kind of...

Rob, thank you for the follow up. This kind of info helps everyone.
Forum: RV General Discussion/News 08-09-2019, 01:51 PM
Replies: 50
Views: 4,139
Posted By DanH
Ditto. Don't confuse how the spark is generated...

Ditto.

Don't confuse how the spark is generated (coil control via a solid state switch rather than contact points) with the commonly too advanced timing schedules supplied by ignition vendors.
Forum: RV General Discussion/News 08-09-2019, 08:23 AM
Replies: 50
Views: 4,139
Posted By DanH
I've gotten the 390 into detonation with an...

I've gotten the 390 into detonation with an ignition setting error, and Greg's description of the indication is accurate. When the CHT numbers suddenly start rolling like the gallons on a gas pump,...
Forum: Safety 08-09-2019, 07:44 AM
Replies: 16
Views: 2,981
Posted By DanH
Yes, for the benefit of the southerners, what is...

Yes, for the benefit of the southerners, what is a bug shirt? What is special about it? Where do you get one?
Forum: Electronic Ignition Systems 08-08-2019, 05:31 PM
Replies: 204
Views: 77,092
Posted By DanH
Average, just a Fluke multimeter in series. ...

Average, just a Fluke multimeter in series.



Me too, but I have not put a scope on it.
Forum: RV General Discussion/News 08-08-2019, 09:29 AM
Replies: 23
Views: 1,451
Posted By DanH
Lance, pull the pipe and have the bung installed....

Lance, pull the pipe and have the bung installed. Not being critical here, but your comment about EGT suggests you're not the customer who should try do EFI setup without a wideband...
Forum: ADS-B 08-08-2019, 09:00 AM
Replies: 37
Views: 2,981
Posted By DanH
The miracle of compounding....3.5K more, followed...

The miracle of compounding....3.5K more, followed by 4.5K more. Not hard to predict where this is going.

It's about the future.

Thanks Phillip.
Forum: Painting your RV 08-08-2019, 08:15 AM
Replies: 7
Views: 642
Posted By DanH
The 13 CFM is draw from the tank. If concerned...

The 13 CFM is draw from the tank. If concerned about the 10.2 compressor falling behind, plumb another tank in parallel.
Forum: RV General Discussion/News 08-08-2019, 08:05 AM
Replies: 31
Views: 2,234
Posted By DanH
I hear you. All design is the art of...

I hear you. All design is the art of compromise.

Is there nowhere to locate the EarthX (in a sealed and vented box) on the cool side of the firewall?
Forum: RV General Discussion/News 08-08-2019, 07:59 AM
Replies: 23
Views: 1,451
Posted By DanH
Thank you Ross. As always, good information,...

Thank you Ross. As always, good information, without the BS.

As a rapid tuning aid, I absolutely agree. Given the available EFI systems require initial adjustment of controller settings, I...
Forum: RV-10 08-08-2019, 07:17 AM
Replies: 80
Views: 34,797
Posted By DanH
Correct. And when it reaches the market, it will...

Correct. And when it reaches the market, it will be a CD-265. Continental considers the 230 to be a development mule.

See "Jet A For The Rest Of Us", in Kitplanes.
Forum: ADS-B 08-08-2019, 06:41 AM
Replies: 37
Views: 2,981
Posted By DanH
Where's my Like Button? Again, not at this...

Where's my Like Button?



Again, not at this time.

Seriously, this is about the future, not tracking hardware currently in place.
Forum: RV-14 08-07-2019, 03:52 PM
Replies: 21
Views: 1,813
Posted By DanH
Mine is the simple drum. Works fine, but as a...

Mine is the simple drum. Works fine, but as a practical matter, requires the purge valve for clean idle cut-off.



Before going to the trouble, I'd set up a flow bench check to determine the...
Forum: ADS-B 08-07-2019, 02:36 PM
Replies: 37
Views: 2,981
Posted By DanH
...at this time.

...at this time.
Forum: RV General Discussion/News 08-07-2019, 02:35 PM
Replies: 23
Views: 1,451
Posted By DanH
So again, when they die from lead poisoning, they...

So again, when they die from lead poisoning, they drift out of calibration over a period of operating hours?
Forum: RV General Discussion/News 08-07-2019, 12:19 PM
Replies: 23
Views: 1,451
Posted By DanH
Except for the question. When they die from lead...

Except for the question. When they die from lead poisoning, they drift out of calibration over a period of operating hours?
Forum: ADS-B 08-07-2019, 08:53 AM
Replies: 37
Views: 2,981
Posted By DanH
In addition, we have the "Terrestrial ADS-B...

In addition, we have the "Terrestrial ADS-B Network", enthusiasts (apparently with boring lives) who set up receivers and feed the data to Flightaware. ...
Forum: ADS-B 08-07-2019, 07:04 AM
Replies: 37
Views: 2,981
Posted By DanH
The popular Garmin GDL-82 broadcasts the...

The popular Garmin GDL-82 broadcasts the aircraft's real ICAO code and N-number at start-up, for about 4 seconds. It then switches to a random ICAO code and drops the N-number, eventually replacing...
Forum: RV General Discussion/News 08-06-2019, 08:48 PM
Replies: 31
Views: 2,234
Posted By DanH
Patient: "Doctor, it hurts when I do...

Patient: "Doctor, it hurts when I do this."

Doctor: "Ok, don't do it."
______________________________________

If an EarthX isn't happy in the engine compartment, why put it there?
Forum: RV General Discussion/News 08-06-2019, 10:58 AM
Replies: 23
Views: 1,451
Posted By DanH
Recalibrated every hour eh? So when they die...

Recalibrated every hour eh?

So when they die from lead poisoning, they drift out of calibration over a period of operating hours?
Forum: RV General Discussion/News 08-06-2019, 10:56 AM
Replies: 16
Views: 3,179
Posted By DanH
Would be nice if it was faster ;)

Would be nice if it was faster ;)
Forum: RV General Discussion/News 08-05-2019, 05:35 PM
Replies: 16
Views: 3,179
Posted By DanH
Here ya' go Bill. Try...

Here ya' go Bill. Try again.

https://www.danhorton.net/Articles/Champions.pdf
Forum: RV-14 08-05-2019, 02:29 PM
Replies: 21
Views: 1,813
Posted By DanH
As always, an RV flies fine with a stock engine...

As always, an RV flies fine with a stock engine choice.
Forum: RV General Discussion/News 08-05-2019, 09:27 AM
Replies: 16
Views: 3,179
Posted By DanH
Well, if he was climbing, perhaps he did see me. ...

Well, if he was climbing, perhaps he did see me. Didn't go between us; he went over my canopy. My fault really. I was head down at that moment, dialing in Ripon after the fuel stop, and John...
Forum: RV General Discussion/News 08-05-2019, 08:38 AM
Replies: 16
Views: 3,179
Posted By DanH
Bill, Thanks again for taking John to the hotel...

Bill,

Thanks again for taking John to the hotel with you. As you know, I was sleeping in a good (and large) tent next to him. His tent fills with water. Instead of just climbing into my tent and...
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