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Search: Posts Made By: DanH
Forum: Probable Cause Documents Discussed Yesterday, 09:56 PM
Replies: 13
Views: 1,797
Posted By DanH
Not from the report.

Not from the report.
Forum: Probable Cause Documents Discussed Yesterday, 05:35 PM
Replies: 13
Views: 1,797
Posted By DanH
I too agree. The very limited view we have of...

I too agree. The very limited view we have of the underside (first airframe photo, from right front) does show a lot of heavy soot aft of the exit. If in flight, this particular fire would have...
Forum: RV-7/7A Yesterday, 08:25 AM
Replies: 0
Views: 144
Posted By DanH
Need a windshield, 7 or 9

Need a windshield. Does anyone have a canopy cracked during the build, or a windshield half left over from a slider replacement?
Forum: Probable Cause Documents Discussed Yesterday, 07:24 AM
Replies: 13
Views: 1,797
Posted By DanH
First, this wasn't a fuel fire. it was an oil...

First, this wasn't a fuel fire. it was an oil fire. (From the report: Smoke striations from the cowling into the cockpit were consistent with an in-flight fire
that originated in the engine...
Forum: RV-8/8A 10-05-2022, 07:50 PM
Replies: 42
Views: 5,296
Posted By DanH
Carl, might want to check that MP...

Carl, might want to check that MP indication.

Run the numbers. At 9000 ft, 176 KTAS, and 54 OAT, pressure is 21.39" Hg and available dynamic pressure (q) is 1.07 Hg.

Can't get 100% conversion of...
Forum: RV-8/8A 10-05-2022, 02:50 PM
Replies: 42
Views: 5,296
Posted By DanH
Carl, perfect! Provides a very close cruise...

Carl, perfect! Provides a very close cruise comparison with an early 210 HP 390; same prop, both 66% power and ~0.4 BSFC (0.404 vs 0.398).

The math to predict speed based on the 390's extra HP...
Forum: RV General Discussion/News 10-04-2022, 09:51 PM
Replies: 37
Views: 2,593
Posted By DanH
A nosewheel 9 cruising at 191 knots on 7.5 is...

A nosewheel 9 cruising at 191 knots on 7.5 is quite impressive. You sure that's what Allen said?
Forum: VAF Classifieds (posts in here deleted after 30 days) 10-04-2022, 02:08 PM
Replies: 0
Views: 216
Posted By DanH
RV-7 Windshield Wanted

Looking for an RV-7 windshield. Got a canopy in the attic, cracked while cutting? Already replaced your slider, and have a left over windshield? Get some cash for it!
Forum: RV-8/8A 10-04-2022, 01:29 PM
Replies: 42
Views: 5,296
Posted By DanH
Let's remember Lycoming's current non-approval of...

Let's remember Lycoming's current non-approval of mogas for the 390 is based on certification criteria. We're not limited to a particular configuration (ignition timing and exhaust pressure being...
Forum: RV Ongoing Maintenance Issues 10-04-2022, 10:57 AM
Replies: 0
Views: 463
Posted By DanH
Sheared Rivets

Working on a rebuild here. This 7A had a nose leg replaced some years ago, following a hard landing.

With the firewall assembly removed, I found both F-601J angles sheared from the F-772B floor...
Forum: RV-8/8A 10-04-2022, 09:34 AM
Replies: 42
Views: 5,296
Posted By DanH
I built a 390 powered -8 back when 390s were...

I built a 390 powered -8 back when 390s were rare, kit only packages, mostly because my friend Monty was very proud of his creation and I had some spare money. No regrets. Yes, it has high stick...
Forum: RV Building Tips/Techniques 10-03-2022, 08:09 AM
Replies: 4
Views: 314
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 10-03-2022, 07:34 AM
Replies: 17
Views: 2,833
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: 623
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: 623
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: 1,270
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: 1,270
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: 1,479,439
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: 5,197
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: 5,197
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: 159,642
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: 3,996
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: 7,907
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: 5,197
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: 1,104
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: 719
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: 8,401
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: 5,197
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: 719
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: 448
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: 3,265
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: 1,104
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: 3,265
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: 3,265
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: 4,061
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: 4,061
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: 1,322
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: 399
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: 4,061
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: 2,620
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: 2,620
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: 1,201
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: 1,740
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: 2,705
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: 659
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: 6,880
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: 2,235
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: 2,235
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: 9,041
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: 9,041
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: 4,282
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: 2,794
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: 19,992
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: 19,992
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: 1,125
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: 31,267
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: 9,041
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: 1,677
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: 9,041
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: 652
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: 1,510
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: 7,537
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: 648
Posted By DanH
What Warren said.

What Warren said.
Forum: Probable Cause Documents Discussed 08-31-2022, 12:37 PM
Replies: 84
Views: 7,537
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.
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