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Search: Posts Made By: David Paule
Forum: Tools Today, 01:38 PM
Replies: 12
Views: 417
Posted By David Paule
Oh yeah. Dave

Oh yeah.

Dave
Forum: RV General Discussion/News Today, 01:35 PM
Replies: 7
Views: 400
Posted By David Paule
MS20603

Looks like the flush version of an explosive rivet that I remember.

The spec was cancelled in '77. I was in the military as a helicopter mechanic then while it was active, and we were never taught...
Forum: RV General Discussion/News Today, 11:46 AM
Replies: 9
Views: 826
Posted By David Paule
As an old stress/dynamics engineer, I've got to...

As an old stress/dynamics engineer, I've got to say that Bobby's post is spot on and well-written.

Dave
Forum: RV Ongoing Maintenance Issues 05-15-2021, 06:13 PM
Replies: 8
Views: 321
Posted By David Paule
When you install the new pin, remember that you...

When you install the new pin, remember that you need very little torque on the nut.

Dave
Forum: RV-12/RV-12iS 05-14-2021, 07:31 PM
Replies: 12
Views: 951
Posted By David Paule
Click Bond Store

These folks have a store (https://www.theflightshop.com/products) that has a good selection. I've never bought from them, though, at least not yet.

Dave
Forum: Photography 05-14-2021, 04:19 PM
Replies: 3
Views: 288
Posted By David Paule
Is that the engine to be specified for the...

Is that the engine to be specified for the RV-15?

Dave
Forum: My RV Build Project 05-13-2021, 05:35 PM
Replies: 560
Views: 336,632
Posted By David Paule
Time for the side panels. Looking through the...

Time for the side panels. Looking through the various RV-3 cockpit photos I have, it looks like there are many ways to do this.

This is what the plans suggest. Here, the cover is not in...
Forum: Electrical Systems 05-13-2021, 03:00 PM
Replies: 12
Views: 676
Posted By David Paule
Why do you want to do this? Dave

Why do you want to do this?

Dave
Forum: Propellers 05-10-2021, 02:38 PM
Replies: 33
Views: 1,588
Posted By David Paule
Is this due to air in the system? If so, is...

Is this due to air in the system?

If so, is there a procedure to purge the air that doesn't involve running the engine?

And is it a general behavior for new constant speed...
Forum: Safety 05-09-2021, 06:15 PM
Replies: 14
Views: 3,123
Posted By David Paule
For what it's worth, I'm a now-retired aerospace...

For what it's worth, I'm a now-retired aerospace structural analyst. You guys call that a "stress analyst," but stress was only part of the job. Stiffness and deflections were at least as much part...
Forum: Tools 05-08-2021, 07:51 PM
Replies: 17
Views: 1,499
Posted By David Paule
A fast way to deburr skin holes, or holes an any...

A fast way to deburr skin holes, or holes an any flat part, is to lay a fine file flat on the surface and slide it across the row of holes, once on each side. If necessary, a reamer will remove any...
Forum: Safety 05-08-2021, 11:40 AM
Replies: 14
Views: 3,123
Posted By David Paule
You can click on the photos and get a larger...

You can click on the photos and get a larger photo.

Dave
Forum: RV Building Tips/Techniques 05-08-2021, 11:38 AM
Replies: 30
Views: 796
Posted By David Paule
If you use the compressor for spraying paint,...

If you use the compressor for spraying paint, that'll govern the compressor requirements. A number of people use a rattle-can primer and even rattlecan paint for the interior. Your plane has a...
Forum: RV Building Tips/Techniques 05-07-2021, 04:54 PM
Replies: 30
Views: 796
Posted By David Paule
I like these

These are decent work benches. (https://vansairforce.net/community/showthread.php?t=160679)

Dave
Forum: RV Building Tips/Techniques 05-07-2021, 03:05 PM
Replies: 15
Views: 863
Posted By David Paule
It looks like the bolt is loaded in bending for...

It looks like the bolt is loaded in bending for this application. That means that the bolt has to carry shear, bending and tension from the preload, all at the same time.

Dave
Forum: RV-10 05-07-2021, 10:52 AM
Replies: 19
Views: 1,113
Posted By David Paule
I've never used the EkoPrime but I use the...

I've never used the EkoPrime but I use the EkoPoxy. EkoPoxy is quite durable and sprays easily. I like it.

I use it in areas that get wear. But the airframe generally has been primed with SEM or...
Forum: Primers 05-07-2021, 07:45 AM
Replies: 7
Views: 557
Posted By David Paule
My own impression of the Zinc Phosphate primer is...

My own impression of the Zinc Phosphate primer is that it did not spray nearly as well as the SEM primer.

Dave
Forum: RV-9/9A 05-06-2021, 12:18 PM
Replies: 11
Views: 1,173
Posted By David Paule
I keep rivets in empty plastic water bottles....

I keep rivets in empty plastic water bottles. When I need some I use a plastic tray from some microwave stuff to hole those few. It drastically cut down the loss rate.

Dave
Forum: Safety 05-04-2021, 10:03 AM
Replies: 27
Views: 2,366
Posted By David Paule
Thanks - that's totally helpful. Dave

Thanks - that's totally helpful.

Dave
Forum: RV Building Tips/Techniques 05-04-2021, 09:13 AM
Replies: 7
Views: 719
Posted By David Paule
1. You're looking for the wrong specification....

1. You're looking for the wrong specification. Try AMS-S-8802.

2. Skygeek.com is a decent source for type A sealant as well as access hatch sealant, which permits easier removal. Van's has the best...
Forum: RV-10 05-02-2021, 04:25 PM
Replies: 11
Views: 847
Posted By David Paule
Instead of the biggest RV, I'm building the...

Instead of the biggest RV, I'm building the smallest, so feel free to neglect my comment.

Whichever order you chose, wings first or fuselage first, you'll be storing the other for a while. Base your...
Forum: RV Ongoing Maintenance Issues 05-02-2021, 09:10 AM
Replies: 6
Views: 679
Posted By David Paule
You won't like this idea and I'm only mentioning...

You won't like this idea and I'm only mentioning it for historical accuracy. Back around 1970 a helicopter (with a low Vne compared to RVs). had a badly cracked bubble. The mechanics drilled small...
Forum: Electrical Systems 05-01-2021, 05:39 PM
Replies: 2
Views: 574
Posted By David Paule
Priming Drilled Holes - An Electrical Issue

Every once in a while something in Wall Street Journal directly pertains to our airplanes. As you might know, Boeing is working through a new issue with the 737 MAX. This time it's a simple...
Forum: RV General Discussion/News 05-01-2021, 09:12 AM
Replies: 67
Views: 8,721
Posted By David Paule
Might be worth going to a good quality body shop...

Might be worth going to a good quality body shop and asking their best bump-out specialist to see what can be done. In other words, get an expert rather than making this a DIY job.

So far I've done...
Forum: My RV Build Project 04-29-2021, 07:15 PM
Replies: 560
Views: 336,632
Posted By David Paule
Iíve been trying to determine the positioning of...

Iíve been trying to determine the positioning of the throttle, trim and mixture and prop controls. The main thing seems to be to put them where they donít interfere with each other, have a clean run...
Forum: My RV Build Project 04-28-2021, 08:01 AM
Replies: 560
Views: 336,632
Posted By David Paule
That's about where it works out if you make it...

That's about where it works out if you make it per the plans and use the supplied manual trim cable. Mine will be just slightly lower and more forward, but pretty much there too.

A lot of RV-3B...
Forum: Electrical Systems 04-27-2021, 06:13 PM
Replies: 26
Views: 3,133
Posted By David Paule
I'm doing it myself, one cable at a time. Where...

I'm doing it myself, one cable at a time. Where the device manufacturer specifies wire colors, I'm following that plan. I label the cable bundle at each end.

Dave
RV-3B, now setting up the cockpit
Forum: Fiberglass 04-27-2021, 09:49 AM
Replies: 8
Views: 341
Posted By David Paule
I built it a while ago and so far it hasn't...

I built it a while ago and so far it hasn't bothered me a whit.

I was just checking in to see if there was anything I missed, any reason to paint it.

Dave
Forum: My RV Build Project 04-26-2021, 06:22 PM
Replies: 560
Views: 336,632
Posted By David Paule
Hi, Ed, thanks for the photo. The location of the...

Hi, Ed, thanks for the photo. The location of the trim lever seems to be very close to what I'll have, and that's a helpful bit of reassurance.

That latch is interesting. I suppose it's the canopy...
Forum: Fiberglass 04-26-2021, 06:19 PM
Replies: 8
Views: 341
Posted By David Paule
No regrets on the Gold Lindy. Thanks, both of...

No regrets on the Gold Lindy.

Thanks, both of you.

Dave
Forum: Fiberglass 04-26-2021, 05:09 PM
Replies: 8
Views: 341
Posted By David Paule
Do I Need To Paint the Fiberglass Avionics Shelf?

I made a fiberglass avionics shelf for my RV-3B. Except for one part of it, the switch panel, it won't be visible unless the top cover is off, and there won't be any sunlight on it. The switch panel...
Forum: RV-14 04-26-2021, 03:46 PM
Replies: 5
Views: 899
Posted By David Paule
Type A tank sealant is considerably thinner than...

Type A tank sealant is considerably thinner than the more common Type B. Might make a better starting point.

Dave
Forum: RV-8/8A 04-21-2021, 04:43 PM
Replies: 8
Views: 1,010
Posted By David Paule
I don't have an RV-8 but I wonder if somehow the...

I don't have an RV-8 but I wonder if somehow the aft canopy latch could have gotten disengaged.

Dave
Forum: RV General Discussion/News 04-20-2021, 08:33 AM
Replies: 9
Views: 923
Posted By David Paule
It has been said, "Slow down, you move too...

It has been said,

"Slow down, you move too fast
You've got to make the morning last...."

Some years ago, a couple of older ladies gave a talk here about hiking the Colorado Trail. This is a fairly...
Forum: RV General Discussion/News 04-20-2021, 08:24 AM
Replies: 21
Views: 958
Posted By David Paule
1. You already mentioned the things you need to...

1. You already mentioned the things you need to start getting knowledge and training your hands.

2. Here on VAF there's a whole Tools section. Spend some time with it - also with the Tips section....
Forum: RV-8/8A 04-19-2021, 07:13 PM
Replies: 9
Views: 474
Posted By David Paule
I would expect that to be the most difficult to...

I would expect that to be the most difficult to achieve and the hardest to verify.

But I'm not a CFD user.

Dave
Forum: RV-8/8A 04-19-2021, 06:32 PM
Replies: 9
Views: 474
Posted By David Paule
There's the old-school approach, which still...

There's the old-school approach, which still works. Plan the systems on your RV-8 so that you can obtain pressures at nearly any point you are interested in, and have a method of recording them. And...
Forum: RV Building Tips/Techniques 04-19-2021, 12:30 PM
Replies: 19
Views: 73,328
Posted By David Paule
NO!

Those give holes that are too big.

#6 screw needs a #29 drill hole, which is the nominal size for #6 screws, which are .136 diameter

#8 screw needs a #19 drill hole, which is the closest to the...
Forum: VAF Classifieds (posts in here deleted after 30 days) 04-19-2021, 10:38 AM
Replies: 4
Views: 359
Posted By David Paule
What in the world is a TCW? Dave

What in the world is a TCW?

Dave
Forum: My RV Build Project 04-18-2021, 10:39 AM
Replies: 560
Views: 336,632
Posted By David Paule
Since Iím making my own throttle lever, and Iím...

Since Iím making my own throttle lever, and Iím putting the PTT switch on the throttle, I got to get intimate with the switch today.

The PTT uses soldered wires. Both the Otto switch and Steinís...
Forum: RV-3 04-17-2021, 11:50 AM
Replies: 85
Views: 84,057
Posted By David Paule
Manual Trim Cable Routing

It seems as if the manual trim cable should enter the cockpit above the rudder cable. That wasn't obvious to me and I arranged to have it enter below. Now things are clearer. My fuselage is slightly...
Forum: RV-14 04-14-2021, 10:43 AM
Replies: 15
Views: 1,127
Posted By David Paule
As for publishing, I've found that occasional...

As for publishing, I've found that occasional comments are worth a bunch. They help me ensure than I've thought of critical things. Sometimes people send me comments off-line and these too are very...
Forum: RV-14 04-13-2021, 06:02 PM
Replies: 15
Views: 1,127
Posted By David Paule
Plan for storage. As you get the kits, you'll...

Plan for storage. As you get the kits, you'll have lots of bits of hardware and lots of other parts. Then as you build, you'll gradually have a bunch of large airplane parts that need storage...
Forum: My RV Build Project 04-13-2021, 08:30 AM
Replies: 560
Views: 336,632
Posted By David Paule
One of the things in the cockpit on the left side...

One of the things in the cockpit on the left side that affects other things is the trim handle. I need to know where it goes. Since the trim cable is made, the handle is at the forward end and the...
Forum: RV-12/RV-12iS 04-12-2021, 08:56 AM
Replies: 17
Views: 1,816
Posted By David Paule
Don't think I'd use hot melt glue for anything on...

Don't think I'd use hot melt glue for anything on the firewall.

Or for anything at all important elsewhere on the airplane.

Dave
Forum: RV Building Tips/Techniques 04-10-2021, 10:52 AM
Replies: 13
Views: 1,174
Posted By David Paule
As the others said, but additionally, add the...

As the others said, but additionally, add the running toque of the nut's locking element, which you'll have to measure.

Dave
Forum: RV General Discussion/News 04-10-2021, 08:04 AM
Replies: 29
Views: 2,831
Posted By David Paule
Hate to say this since I'm nine years into my...

Hate to say this since I'm nine years into my RV-3B project, but the cheapest airplane is probably a used one, and that includes certified.

Split your goal up so that one goal is to fly and the...
Forum: My RV Build Project 04-09-2021, 11:21 AM
Replies: 29
Views: 1,635
Posted By David Paule
What does the avionics switch do for you? Can you...

What does the avionics switch do for you? Can you eliminate it?

Is your ELT on battery power if it's switch is on and the master is off? Because some are not, and those switches can be left on.

I...
Forum: RV Building Tips/Techniques 04-07-2021, 11:37 AM
Replies: 11
Views: 845
Posted By David Paule
I like. Beautifully simple. Dave

I like.

Beautifully simple.

Dave
Forum: Electronic Ignition Systems 04-07-2021, 11:33 AM
Replies: 9
Views: 831
Posted By David Paule
Look at the Otto P7 series. I emailed their data...

Look at the Otto P7 series. I emailed their data sheet to you.

Dave
Forum: My RV Build Project 04-07-2021, 11:31 AM
Replies: 29
Views: 1,635
Posted By David Paule
Scott, I like to have a flow to the starting and...

Scott, I like to have a flow to the starting and to the shutdown. I prefer going left to right for the start-up, and right to left for the shutdown. Yours is more of a hopscotch pattern.

Now that's...
Forum: RV General Discussion/News 04-05-2021, 03:43 PM
Replies: 8
Views: 464
Posted By David Paule
The previous poster, Blake, has given me...

The previous poster, Blake, has given me excellent service. Happy to say he's one of the numerous good guys in this field. I'd buy from him again and probably will.

Before changing tailwheels or...
Forum: My RV Build Project 04-05-2021, 01:55 PM
Replies: 560
Views: 336,632
Posted By David Paule
Thanks for these comments. I have sat in the...

Thanks for these comments.

I have sat in the cockpit a number of times with the switch panel (and the avionics shelf, which is part of the same fiberglass part) installed. I need to pay attention...
Forum: RV General Discussion/News 04-03-2021, 01:01 PM
Replies: 6
Views: 679
Posted By David Paule
That's pretty darn clever. Good job! Dave

That's pretty darn clever. Good job!

Dave
Forum: RV-12/RV-12iS 04-03-2021, 10:49 AM
Replies: 22
Views: 2,863
Posted By David Paule
I've seen some of these parts - they look...

I've seen some of these parts - they look great.

Dave
Forum: My RV Build Project 04-01-2021, 07:24 PM
Replies: 560
Views: 336,632
Posted By David Paule
Here’s the next revision of the switch panel This...

Here’s the next revision of the switch panel This one works fine - it’s what I’ll do for the real one. Left to right,

Start
Master Battery/Alternator LH ignition
RH ignition
Fuel pump
Nav/Strobe...
Forum: RV General Discussion/News 03-31-2021, 06:16 PM
Replies: 16
Views: 1,173
Posted By David Paule
I didn't know that I might be able to get hangar...

I didn't know that I might be able to get hangar coverage on my homeowner's insurance. I have it on a stand-alone policy, and it includes something for project coverage, too. It's more than just...
Forum: Electrical Systems 03-30-2021, 10:45 AM
Replies: 3
Views: 310
Posted By David Paule
Thanks, Mike. Dave

Thanks, Mike.

Dave
Forum: Electrical Systems 03-30-2021, 09:18 AM
Replies: 3
Views: 310
Posted By David Paule
Looking For PTT Switch

I've got this one (https://www.steinair.com/product/14-momentary-push-button-switch/) from Steinair.com.

https://www.steinair.com/wp-content/uploads/2016/03/PTT-SWITCH-L-DSC03556.jpg

Functionally,...
Forum: Traditional Aircraft Engines 03-29-2021, 06:45 PM
Replies: 3
Views: 388
Posted By David Paule
When I changed engines on my non-RV, I had the...

When I changed engines on my non-RV, I had the chance to use a digital tach, and my mechanical tach was accurate through its range. At that time it was about 40 years old, but I'd replaced the cable...
Forum: RV-3 03-29-2021, 06:43 PM
Replies: 0
Views: 220
Posted By David Paule
Manual Trim Cable Routing?

Anyone have any photos of the trim cable going into the stabilizer rib?

Hoe about going through the F-309 bulkhead? This is the aft-most full height bulkhead.

I have the holes through the...
Forum: RV General Discussion/News 03-29-2021, 01:23 PM
Replies: 14
Views: 1,046
Posted By David Paule
I bought all the airframe kits at once. Then one...

I bought all the airframe kits at once. Then one day Santa offered me a deal on an engine. Once I got the engine, I ordered the finish kit. I'm building an RV-3B and there is no FWF kit for that...
Forum: Fiberglass 03-28-2021, 07:27 PM
Replies: 7
Views: 1,334
Posted By David Paule
Actually, in my experience, once the strength and...

Actually, in my experience, once the strength and stiffness has been matched, in a decent design, the carbon one is indeed lighter.

Dave
Old retired engineer
Forum: RV General Discussion/News 03-28-2021, 04:19 PM
Replies: 69
Views: 6,998
Posted By David Paule
They've stopped using the metal cans? Dave

They've stopped using the metal cans?

Dave
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