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Search: Posts Made By: DanH
Forum: RV Building Tips/Techniques Yesterday, 08:09 AM
Replies: 4
Views: 264
Posted By DanH
None except the possibility of exotherm. If...

None except the possibility of exotherm. If using a very slow hardener to counteract exotherm, micro can even be cast.

Micro is weak in contrast with flox or fiber, but it's not a problem for...
Forum: RV Building Tips/Techniques Yesterday, 07:34 AM
Replies: 15
Views: 2,469
Posted By DanH
Prop bolts, complete with torque seal on each...

Prop bolts, complete with torque seal on each head. Total thread engagement was 0.172"...three, maybe four threads.

Just another example of why torque seal is useless as an indicator of...
Forum: Traditional Aircraft Engines 10-02-2022, 10:05 AM
Replies: 8
Views: 550
Posted By DanH
The flow divider spring may be calibrated for 2...

The flow divider spring may be calibrated for 2 psi. However, given standard 0.028" restrictors, nozzle pressure doesn't reach 2 psi until roughly 8 gallons per hour. See the Lycoming chart. ...
Forum: Traditional Aircraft Engines 10-01-2022, 09:37 AM
Replies: 8
Views: 550
Posted By DanH
For those not up to speed regarding nozzles and...

For those not up to speed regarding nozzles and restrictor theory...

Fuel flows through the restrictor and across an air gap into a larger diameter passage in the base of the nozzle. The nozzle has...
Forum: Painting your RV 09-29-2022, 06:14 AM
Replies: 15
Views: 1,165
Posted By DanH
The advice was to return to bare glass and shell...

The advice was to return to bare glass and shell it with epoxy, the result being a fully sealed surface...the goal here. Subsequent primer would largely be for UV protection until it can be test...
Forum: Painting your RV 09-28-2022, 06:02 PM
Replies: 15
Views: 1,165
Posted By DanH
What Carl said. The surface was nowhere near...

What Carl said. The surface was nowhere near ready for an epoxy or urethane primer.

I'd sand off all the primer, back to bare glass, roll or brush a coat of System Three ClearCoat (or a similar...
Forum: RV Ongoing Maintenance Issues 09-26-2022, 09:32 AM
Replies: 432
Views: 1,479,321
Posted By DanH
When were the tanks built?

When were the tanks built?
Forum: RV Photo/Video URLs 09-25-2022, 01:44 PM
Replies: 51
Views: 5,059
Posted By DanH
....specifically page 12, Form A, line 9.

....specifically page 12, Form A, line 9.
Forum: RV Photo/Video URLs 09-25-2022, 09:44 AM
Replies: 51
Views: 5,059
Posted By DanH
An old debate. In the not distant past, most...

An old debate.

In the not distant past, most homebuilders would have sided against any sort of pro-built participation in aircraft judging, the exception being warbirds. Twenty years ago I recall...
Forum: RV Building Tips/Techniques 09-25-2022, 06:43 AM
Replies: 196
Views: 159,411
Posted By DanH
You've identified a problem not seem in body and...

You've identified a problem not seem in body and detail shops...plexiglass. Obviously not an issue on auto glass.

Post buffing clean up is usually just soap and water. I'd try a wet towel draped...
Forum: Primers 09-25-2022, 06:07 AM
Replies: 23
Views: 3,885
Posted By DanH
Brian, please tell us more about the two Cor-Ban...

Brian, please tell us more about the two Cor-Ban products. Can you share how they were selected, comparisons with other similar products, etc? In your trade, are "creep in between" inhibitors a big...
Forum: RV-8/8A 09-25-2022, 05:59 AM
Replies: 28
Views: 7,860
Posted By DanH
No secret. Predicted a long time ago. Read...

No secret. Predicted a long time ago. Read 'Breaking News":

https://vansairforce.net/community/showthread.php?t=42630
Forum: RV Photo/Video URLs 09-23-2022, 07:41 PM
Replies: 51
Views: 5,059
Posted By DanH
Ya'll cut it out. Steve has a beautiful...

Ya'll cut it out. Steve has a beautiful airplane, and nobody is knocking his choice. It's just that it's kinda amazing to see how popular that particular choice has become.
Forum: Painting your RV 09-23-2022, 02:16 PM
Replies: 16
Views: 1,078
Posted By DanH
I think I've eaten a mushroom and fallen down the...

I think I've eaten a mushroom and fallen down the rabbit hole. This thread has a good builder wiping discount polyester filler on aluminum and epoxy, and another is talking about $30K+ paint...
Forum: RV-8/8A 09-23-2022, 01:15 PM
Replies: 10
Views: 689
Posted By DanH
What Carl said. The -8 is maybe the easiest of...

What Carl said. The -8 is maybe the easiest of the fleet. Build the panel as a plug in assembly. Anything inconvenient to wire via quick disconnects goes in a sub-panel. Most of the time you'll...
Forum: Traditional Aircraft Engines 09-23-2022, 07:16 AM
Replies: 53
Views: 8,332
Posted By DanH
Temperature vs kinematic viscosity, Aeroshell...

Temperature vs kinematic viscosity, Aeroshell 100W vs 15-50 multigrade. For clarity, I've removed the plot lines for Sport, 120W, Diesel, etc, and inserted color. The original is found in the...
Forum: RV Photo/Video URLs 09-23-2022, 05:53 AM
Replies: 51
Views: 5,059
Posted By DanH
My goodness, how homebuilding has changed...

My goodness, how homebuilding has changed...
Forum: RV-8/8A 09-22-2022, 01:19 PM
Replies: 10
Views: 689
Posted By DanH
Seemed to work out ok. but like Steve, apparently...

Seemed to work out ok. but like Steve, apparently I had all the parts in place.
.
Forum: RV Building Tips/Techniques 09-22-2022, 08:45 AM
Replies: 4
Views: 436
Posted By DanH
As a general rule it's best to locate...

As a general rule it's best to locate penetrations in areas least likely to reach a high heat level. The worst zone is centered behind the fuel pump, accessory case, etc, where fuel and oil sources...
Forum: RV Building Tips/Techniques 09-22-2022, 06:55 AM
Replies: 31
Views: 3,206
Posted By DanH
Absolutely. I'm guessing there are a few...

Absolutely.



I'm guessing there are a few thousand builders who would kill to get personal instruction time with you. Seriously.
Forum: Painting your RV 09-22-2022, 06:30 AM
Replies: 16
Views: 1,078
Posted By DanH
Epoxy and a bulk filler (microballoons, talc,...

Epoxy and a bulk filler (microballoons, talc, etc) provides the best adhesion, but given small imperfections (rivet smileys, rock dings), practically any of the polyester-based commercial "glaze"...
Forum: RV Building Tips/Techniques 09-21-2022, 07:03 AM
Replies: 31
Views: 3,206
Posted By DanH
Excellent, thanks. No question, with the...

Excellent, thanks.



No question, with the needle valve, pressure at the trigger drops from full line pressure to some unknown lesser pressure during that 1.5 second squeeze. I say "unknown"...
Forum: RV Building Tips/Techniques 09-20-2022, 08:12 AM
Replies: 31
Views: 3,206
Posted By DanH
Scott, perhaps you could expand on this a bit. ...

Scott, perhaps you could expand on this a bit. With a needle valve the initial pressure at the trigger will be full line pressure, quickly dropping to some lower pressure across the needle...
Forum: RV General Discussion/News 09-20-2022, 06:37 AM
Replies: 24
Views: 3,960
Posted By DanH
You bet Jeff. Chicks dig fastbacks. ;) (Back...

You bet Jeff. Chicks dig fastbacks. ;)

(Back story...I took nearly the exact same photo, first trip with Ms. Patti. Whodathunkit?)
.
Forum: RV General Discussion/News 09-20-2022, 05:50 AM
Replies: 24
Views: 3,960
Posted By DanH
Unarmed volunteers. And compared to balloons,...

Unarmed volunteers. And compared to balloons, much easier to see.
Forum: Traditional Aircraft Engines 09-19-2022, 06:48 AM
Replies: 9
Views: 1,301
Posted By DanH
Returning to the photos...torque the case halves...

Returning to the photos...torque the case halves together and carefully measure the main bearing bores for roundness.
Forum: RV Building Tips/Techniques 09-19-2022, 06:37 AM
Replies: 5
Views: 388
Posted By DanH
From the Lessons Learned The Hard Way file... Do...

From the Lessons Learned The Hard Way file...

Do not encapsulate any significant quantity of pour-in-place foam. It doesn't work well with changes in atmospheric pressure. Over time, fiberglass...
Forum: RV General Discussion/News 09-18-2022, 09:04 PM
Replies: 24
Views: 3,960
Posted By DanH
I received this lovely award at PJ. Apparently I...

I received this lovely award at PJ. Apparently I am unable to see a balloon smaller than the Goodyear blimp. I don't know why they put Paul's picture on it ;)

Jesse got shot down again, but he...
Forum: Safety 09-15-2022, 10:13 AM
Replies: 15
Views: 2,591
Posted By DanH
Not much risk this year. August has typically...

Not much risk this year. August has typically been a dry month in South Alabama, but recently it has been more like living in the tropics.
Forum: Safety 09-15-2022, 07:21 AM
Replies: 15
Views: 2,591
Posted By DanH
I'm off to PJ in a few minutes, but here's an...

I'm off to PJ in a few minutes, but here's an update for the curious.

I decided to delay general availability and conduct new burn tests, to better document typical performance, examine some details...
Forum: RV-9/9A 09-13-2022, 06:02 PM
Replies: 14
Views: 1,171
Posted By DanH
Brandon, the wild card is the cable(s) or...

Brandon, the wild card is the cable(s) or strap(s) which attach the chute to the airplane. It really doesn't matter very much where you locate the pack, or which direction you fire the rocket,...
Forum: RV General Discussion/News 09-13-2022, 06:49 AM
Replies: 19
Views: 1,712
Posted By DanH
Tom, the shells of all the empennage tips are...

Tom, the shells of all the empennage tips are fiberglass, but the ends of the shells are typically filled by the builder. The usual method is to tack in some kind of bulkhead, then glass over it. ...
Forum: RV-14 09-13-2022, 06:37 AM
Replies: 16
Views: 2,673
Posted By DanH
Go see Jeff, or visit the Triple Tree Fly-In near...

Go see Jeff, or visit the Triple Tree Fly-In near Enoree SC, weekend after next. Heck, do both!

The facility at Triple Tree is amazing. It's hard to imagine a place more pleasant to take someone...
Forum: RV-10 09-12-2022, 08:26 AM
Replies: 8
Views: 645
Posted By DanH
Antisplat did offer an exhaust tap for the -10...

Antisplat did offer an exhaust tap for the -10 some time ago, but it was installed on a tailpipe, and in that location, it built up coke and became blocked very quickly. IIRC, some users got as...
Forum: RV Ongoing Maintenance Issues 09-12-2022, 07:26 AM
Replies: 46
Views: 6,817
Posted By DanH
Note Wix 51258 uses a 13/16 nipple, not 3/4.

Note Wix 51258 uses a 13/16 nipple, not 3/4.
Forum: RV General Discussion/News 09-12-2022, 06:14 AM
Replies: 11
Views: 2,206
Posted By DanH
Perfectly reasonable, although after the...

Perfectly reasonable, although after the installation of a stainless belly overlay on the outside, the stainless liner inside will be dead weight.



Yep, again, I like the structural aspect very...
Forum: RV General Discussion/News 09-11-2022, 08:59 PM
Replies: 11
Views: 2,206
Posted By DanH
Otis, structurally speaking I really like the...

Otis, structurally speaking I really like the honeycomb/aluminum panels.

Fire protection is questionable. I've not checked honeycomb with the burner, but Nomex is not as fireproof as folks...
Forum: RV-7/7A 09-08-2022, 11:13 PM
Replies: 43
Views: 8,962
Posted By DanH
That particular product is useful as a comfort...

That particular product is useful as a comfort insulation, but only moderately effective against fire. Most if it just fell off anywhere it got hot. However, better than nothing, and it doesn't...
Forum: RV-7/7A 09-08-2022, 08:16 PM
Replies: 43
Views: 8,962
Posted By DanH
Fundamental cause was very poor hose routing when...

Fundamental cause was very poor hose routing when the engine was installed. Not a homebuilder error; this engine was installed four years ago by a professional shop, and annualed by the same shop...
Forum: RV General Discussion/News 09-07-2022, 06:03 AM
Replies: 36
Views: 4,207
Posted By DanH
Now that's funny! Thanks for a good start to my...

Now that's funny! Thanks for a good start to my day.
Forum: RV-6/6A 09-07-2022, 05:59 AM
Replies: 21
Views: 2,729
Posted By DanH
Returning to topic.... Post a detailed list of...

Returning to topic....



Post a detailed list of available components, after disassembly. Be ready to ship immediately. Post the list to VAF's Classified section and manage it at least daily....
Forum: RV General Discussion/News 09-05-2022, 02:42 PM
Replies: 91
Views: 19,945
Posted By DanH
What size would that be Mike? The Wix 51515 I...

What size would that be Mike?



The Wix 51515 I used as an example is rated at 7 to 9 gallons per minute, which on its face is enough to satisfy the Lycomings we use. However, I'll need to get my...
Forum: RV General Discussion/News 09-05-2022, 08:44 AM
Replies: 91
Views: 19,945
Posted By DanH
I recently got interesting in oil filters. Ran...

I recently got interesting in oil filters. Ran across this thread while searching something else. I'll bet that happens a lot. A few random notes....

Micron ratings come in two flavors, absolute...
Forum: RV Ongoing Maintenance Issues 09-04-2022, 05:56 PM
Replies: 7
Views: 1,088
Posted By DanH
If the shaft is still a good fit in the bore, no...

If the shaft is still a good fit in the bore, no problem. If lack of lube has worn the shaft and/or bore egg-shaped, replacement is in order.

The troublesome parts tend to be the round tip of the...
Forum: Safety 09-04-2022, 05:39 PM
Replies: 252
Views: 31,029
Posted By DanH
I doubt an insurance company would care.

I doubt an insurance company would care.
Forum: RV-7/7A 09-04-2022, 10:05 AM
Replies: 43
Views: 8,962
Posted By DanH
I've spoken with Matt. We'll see if cause can be...

I've spoken with Matt. We'll see if cause can be determined, and report if it's interesting.
Forum: RV Ongoing Maintenance Issues 09-04-2022, 06:59 AM
Replies: 37
Views: 1,661
Posted By DanH
Perhaps too late. The screen draws oil from the...

Perhaps too late. The screen draws oil from the bottom of the oil sump. It is removed for cleaning while the sump is drained.

Has someone at your airport showed you how to cut a filter for...
Forum: RV-7/7A 09-02-2022, 09:38 PM
Replies: 43
Views: 8,962
Posted By DanH
The process would start with a hands-on...

The process would start with a hands-on inspection. If you would like a good assessment, my phone number is in your private messages.
Forum: RV Building Tips/Techniques 09-02-2022, 10:13 AM
Replies: 11
Views: 646
Posted By DanH
http://www.n91cz.net/airbox/airbox.htm

http://www.n91cz.net/airbox/airbox.htm
Forum: RV-8/8A 09-01-2022, 05:35 AM
Replies: 20
Views: 1,491
Posted By DanH
Wingtip mounting is common enough, but I seem to...

Wingtip mounting is common enough, but I seem to recall Scott Card relating how a mount at the gas cap was unsatisfactory. Search...
Forum: Probable Cause Documents Discussed 08-31-2022, 10:48 PM
Replies: 84
Views: 7,463
Posted By DanH
https://pbavion.com/ Walt does make a reasonable...

https://pbavion.com/

Walt does make a reasonable point about trying to make things foolproof when possible. It's not always possible, but here, perhaps yes.

The common 90 pump outlet fitting is...
Forum: RV-7/7A 08-31-2022, 06:34 PM
Replies: 9
Views: 644
Posted By DanH
What Warren said.

What Warren said.
Forum: Probable Cause Documents Discussed 08-31-2022, 12:37 PM
Replies: 84
Views: 7,463
Posted By DanH
Actually, I was thinking about the mechanic...

Actually, I was thinking about the mechanic ...and I bet this would not have gotten out of your shop.
Forum: Probable Cause Documents Discussed 08-31-2022, 08:20 AM
Replies: 84
Views: 7,463
Posted By DanH
Yes, it would help us identify those who didn't...

Yes, it would help us identify those who didn't memorize the color code.

Seriously, there is no bandaid for basic competence.
Forum: Probable Cause Documents Discussed 08-30-2022, 03:07 PM
Replies: 84
Views: 7,463
Posted By DanH
Nothing in the report tells us who plumbed...

Nothing in the report tells us who plumbed it...

https://data.ntsb.gov/Docket/Document/docBLOB?ID=12468917&FileExtension=pdf&FileName=Photo%201-Rel.pdf

I once caught an engine driven pump plumbed...
Forum: RV General Discussion/News 08-30-2022, 09:46 AM
Replies: 27
Views: 4,053
Posted By DanH
I dunno, when I'm happy I guess. There are a few...

I dunno, when I'm happy I guess. There are a few beta installations ongoing, and I'm still testing, mostly confirmations of details not previously documented.

In the previous photo you were...
Forum: RV General Discussion/News 08-30-2022, 09:14 AM
Replies: 2
Views: 504
Posted By DanH
See below. You mentioned removing "the plug in...

See below.

You mentioned removing "the plug in the sump". I assume you mean the mushroom shaped plug which was in the bottom of the oil screen recess. If not, go back and get it out.
.
Forum: RV General Discussion/News 08-29-2022, 10:26 PM
Replies: 27
Views: 4,053
Posted By DanH
Jerry, did you hear me on the radio when you...

Jerry, did you hear me on the radio when you arrived back at home base Sunday evening, telling about your crab cake run?

Yeah, I can hear everybody in the pattern at Falcon...

Spent a chunk of my...
Forum: Traditional Aircraft Engines 08-29-2022, 03:49 PM
Replies: 4
Views: 677
Posted By DanH
Filter Diameter

Quick survey please...more research.

Subject is oil filter diameter. Specific interest is the max possible OD when mounted on a filter adapter calling for a xx108 or xx109 series filter.

Not an...
Forum: Southeast 08-28-2022, 10:19 AM
Replies: 34
Views: 5,101
Posted By DanH
Getting ready. Not sure the laser will be done...

Getting ready.

Not sure the laser will be done in time.
.
Forum: RV Building Tips/Techniques 08-27-2022, 12:07 PM
Replies: 16
Views: 1,428
Posted By DanH
Take a hard look using a 10x magnifier. A lot of...

Take a hard look using a 10x magnifier. A lot of the time, countersunk plexiglass which looks fine to the naked eye is a mess of stress risers under magnification.

Agree with grinding the CS for...
Forum: Traditional Aircraft Engines 08-27-2022, 09:25 AM
Replies: 21
Views: 1,629
Posted By DanH
Higher is better. Perhaps you meant minimum...

Higher is better. Perhaps you meant minimum beta?

Beta indicates how many of the rated particle size is being stopped by the filter, or conversely, how many are getting through.

A beta of "4"...
Forum: Traditional Aircraft Engines 08-26-2022, 10:40 PM
Replies: 21
Views: 1,629
Posted By DanH
Don't worry about it. Nominal micron ratings are...

Don't worry about it. Nominal micron ratings are mostly a form of advertising. Although the reader may think a 20 micron rating (for example) means the filter stops all particles 20 microns and...
Forum: RV-8/8A 08-26-2022, 09:47 AM
Replies: 13
Views: 1,280
Posted By DanH
Ken Krueger has some nice...

Ken Krueger has some nice stuff:

https://www.skydesigns.aero/products
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