Search found 415 matches

by taildrags
Sat Jan 16, 2021 1:51 pm
Forum: Pietenpol Builders Forum
Topic: Center Section Flooring
Replies: 2
Views: 70

Re: Center Section Flooring

In my opinion, the plywood floor in the centersection is a good and useful thing, but not for structural reasons. Going back to the 1932 Flying & Glider Manual, the wing was one-piece and that plywood is called out as 1/16" thick "for supporting tank and bracing center section". S...
by taildrags
Wed Jan 13, 2021 3:23 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Looking good! Progress photos are good for those who might be considering the same setup.

-Oscar
by taildrags
Fri Jan 08, 2021 10:57 am
Forum: Pietenpol Builders Forum
Topic: Wood and Steel Fuselages
Replies: 1
Views: 90

Re: Wood and Steel Fuselages

Sorry, Varmint... I'm not a steel guy and I don't weld, but I do know that the steel tube fuselage has been successfully employed by builders for many years and is said to be lighter that the wood fuselage. Others will have to chime in here, like Terry Hand, who is building his Piet with a steel tub...
by taildrags
Mon Jan 04, 2021 3:46 pm
Forum: Pietenpol Builders Forum
Topic: Stewart Systems Question
Replies: 5
Views: 202

Re: Stewart Systems Question

I don't have personal experience, but an A&P friend of mine has the following comments about it -Oscar I've heard of both methods and can't say that I have a preference of one over the other. While I have "supervised" and done the paperwork for two recovers with Stewart system, I have ...
by taildrags
Thu Dec 24, 2020 3:21 pm
Forum: Pietenpol Builders Forum
Topic: First Quarter 2021 Newsletter
Replies: 4
Views: 204

Re: First Quarter 2021 Newsletter

Pat; the first of January is 8 days from now. Does that give you enough time to put together the upcoming edition if we submit something in the next few days?

-Oscar Zuniga
Medford, OR
by taildrags
Tue Dec 22, 2020 10:22 am
Forum: Pietenpol Builders Forum
Topic: Last stitch on the first wing done
Replies: 6
Views: 194

Re: Last stitch on the first wing done

Ken: that's even easier, yes!

-OZ
by taildrags
Mon Dec 21, 2020 10:30 pm
Forum: Pietenpol Builders Forum
Topic: Last stitch on the first wing done
Replies: 6
Views: 194

Re: Last stitch on the first wing done

Melting tiny holes in the fabric where each stitch enters and exits makes it much easier to hit the right spot with the needle, and it's easier to push through. Your tapes cover the stitching and the holes anyway. Worth experimenting with, if you haven't tried it.

-Oscar
by taildrags
Sun Dec 20, 2020 1:05 pm
Forum: Pietenpol Builders Forum
Topic: Last stitch on the first wing done
Replies: 6
Views: 194

Re: Last stitch on the first wing done

Did you do the little soldering iron trick where you touch the tip of a soldering pen to the fabric where each hole will go? I can't tell from the photos. The largest thing I've covered has been my vertical stabilizer when I made repairs on it, and that little trick made it much easier to hit the ho...
by taildrags
Tue Dec 15, 2020 11:24 am
Forum: Pietenpol Builders Forum
Topic: Pietenpol Fleet Size
Replies: 7
Views: 597

Re: Pietenpol Fleet Size

Well, I'm not on the Western Front but I am on the West Coast. And I speak some French and really like French fries. I also own a white scarf and goggles. I quit smoking in 1973 but maybe somebody will let me fly in their escadrille...

-OZ
by taildrags
Mon Dec 14, 2020 10:23 am
Forum: Pietenpol Builders Forum
Topic: Pietenpol Fleet Size
Replies: 7
Views: 597

Re: Pietenpol Fleet Size

Oh, what a stirring sight, to be sure! Will there be smoke?

-OZ
by taildrags
Sun Dec 13, 2020 4:14 pm
Forum: Pietenpol Builders Forum
Topic: Pietenpol Fleet Size
Replies: 7
Views: 597

Re: Pietenpol Fleet Size

Ken, I'm having trouble visualizing "a two-ship mass arrival" of Air Campers :lol:

-Oscar
by taildrags
Fri Dec 11, 2020 10:46 am
Forum: Pietenpol Builders Forum
Topic: Strut Materials
Replies: 10
Views: 576

Re: Strut Materials

Varmint; You're confusing my responses with those of Richard Roller. Notice the registration numbers of his airplane, N34KP. See those last two letters? Richard now owns and flies the Piet that belonged to Ken Perkins! That is a very interesting "circling around to where it started"! About...
by taildrags
Wed Dec 09, 2020 10:17 pm
Forum: Pietenpol Builders Forum
Topic: Strut Materials
Replies: 10
Views: 576

Re: Strut Materials

Varmint; I guess your initial question still hasn't been answered... are the cabane struts the same size material as the wing lift struts? My answer, based on the forces that they see, is "no". But just going back to the 1932 Air Camper plans and looking at the relative sizes of those in t...
by taildrags
Tue Dec 01, 2020 10:25 pm
Forum: Pietenpol Builders Forum
Topic: Cable exit grommets/fairings question
Replies: 4
Views: 259

Re: Cable exit grommets/fairings question

Hey Barrett, check this out. "Dan" in Texas emailed me with this nifty idea, premanufactured parts, not expensive, might give you some ideas. From Dan: American Champion Aircraft part number 1-9971 grommet. As measured = 120mm X 47mm a.k.a 4 11/16" X 1 14/16". $9.71 each. 91 in s...
by taildrags
Sun Nov 29, 2020 10:36 pm
Forum: Pietenpol Builders Forum
Topic: Cable exit grommets/fairings question
Replies: 4
Views: 259

Re: Cable exit grommets/fairings question

Well, you're right... I snooped around on the net looking for fairings, fairleads, and all sorts of other keywords and didn't find anything like what you describe either. But hey, if you've got all winter to mess with it, and probably not that many parts to make, why not try making your own? You can...
by taildrags
Mon Nov 09, 2020 10:32 am
Forum: Pietenpol Builders Forum
Topic: Luscombe wing
Replies: 9
Views: 456

Re: Luscombe wing

Richard; the picture is only upside-down in the preview. If you click on the image to open it, it comes out right-side up.

-Oscar
by taildrags
Sun Nov 08, 2020 3:46 pm
Forum: Pietenpol Builders Forum
Topic: Luscombe wing
Replies: 9
Views: 456

Re: Luscombe wing

The usual way to differentiate a Grega from a Pietenpol is to look at the main landing gear attach points to the fuselage. On the Grega, the forward mounting point is the same as the Piet but the aft is moved forward and does not coincide with the mounting point for the aft lift strut. However, they...
by taildrags
Sat Nov 07, 2020 4:43 pm
Forum: Pietenpol Builders Forum
Topic: Luscombe wing
Replies: 9
Views: 456

Re: Luscombe wing

It appears to have other mods as well. The Air Camper elevators do not have 'horns' at the ends for aerodynamic balance, nor do they have rounded ends.

-Oscar
by taildrags
Sat Nov 07, 2020 4:40 pm
Forum: Pietenpol Builders Forum
Topic: Tall pilots and leg room
Replies: 7
Views: 390

Re: Tall pilots and leg room

You would most likely have to either eliminate the front seat or develop a different front seat design, because if you move the rudder bar forward very much, it'll be touching the front seat support at full deflection.

-Oscar
by taildrags
Thu Nov 05, 2020 10:59 pm
Forum: Pietenpol Builders Forum
Topic: Luscombe wing
Replies: 9
Views: 456

Re: Luscombe wing

I don't know anything specific about the wing, but just looking at a Luscombe 8 for example, it uses the NACA 4412 airfoil, has a wingspan of 35 ft and a wing area of 140 sq.ft. which puts the chord at an average of 48". The gross weight and top speed are both higher than that of the Air Camper...
by taildrags
Wed Nov 04, 2020 10:25 am
Forum: Pietenpol Builders Forum
Topic: Tall pilots and leg room
Replies: 7
Views: 390

Re: Tall pilots and leg room

I'm only 5'-9" so I don't have a valid opinion on this, but I would venture to say that there could be several inches' difference between two pilots who are both 6'-4". One could be long in the torso, the other could have long legs. The pilot with the longer torso would probably be looking...
by taildrags
Tue Nov 03, 2020 4:19 pm
Forum: Pietenpol Builders Forum
Topic: Vertical Stabilizer flutter
Replies: 14
Views: 649

Re: Vertical Stabilizer flutter

Andy; your pilot should consider himself lucky to still be around. That thing could have flown apart at any moment, especially if there had been bumpy air. As far as a fix, I would say that 90+ years of experience of Air Campers flying safely and successfully without structural failures of that sort...
by taildrags
Mon Nov 02, 2020 10:49 pm
Forum: Pietenpol Builders Forum
Topic: Vertical Stabilizer flutter
Replies: 14
Views: 649

Re: Vertical Stabilizer flutter

Richard: I don't know if all Grega GN-1s are setup like this, but Ernie Moreno's is. See pic.

-Oscar
tail01.jpg
by taildrags
Mon Nov 02, 2020 3:15 pm
Forum: Pietenpol Builders Forum
Topic: Vertical Stabilizer flutter
Replies: 14
Views: 649

Re: Vertical Stabilizer flutter

Andy; what engine is on the airplane? And what do the windscreens look like? I'm just wondering if the vertical stabilizer vibration is in sync with the propeller pulses. Similar question with the windscreens, wondering if they might be aggravating or creating the propeller stream getting to the VS....
by taildrags
Sun Nov 01, 2020 10:51 pm
Forum: Pietenpol Builders Forum
Topic: Speed Queen water pump? Model A engine.
Replies: 6
Views: 501

Re: Speed Queen water pump? Model A engine.

Engineers eat numbers for lunch. We gotta have numbers. Here's a fictitious numbers exercise: a water-cooled 4-stroke that puts out 40 hp to the shaft at rated RPM (whatever that RPM is). Let's assume that the combustion efficiency of the engine is 40% and the other 60% is lost as heat. Let's furthe...
by taildrags
Sun Oct 25, 2020 10:38 pm
Forum: Pietenpol Builders Forum
Topic: compass location
Replies: 7
Views: 389

Re: compass location

Just looked at the pic again... I see that your compass is mounted just ahead of the rear spar. Got it.

Also noticed that you used my U-bolt trick on the cabane braces for mounting the passenger's shoulder harness to. How's that working out? Mine works great.

-Oscar
by taildrags
Sun Oct 25, 2020 10:33 pm
Forum: Pietenpol Builders Forum
Topic: compass location
Replies: 7
Views: 389

Re: compass location

Ken; thanks for the tips on compass mounting up there. I'll most likely Gorilla Tape the compass in place and fly it a bit before settling on anything. And I know what you mean about bifocals. When I wear my contacts to fly, I can wear any sunglasses I want, any goggles I want, or nothing on my eyes...
by taildrags
Sat Oct 24, 2020 11:44 am
Forum: Pietenpol Builders Forum
Topic: compass location
Replies: 7
Views: 389

Re: compass location

Ken; thanks for confirming the path I've decided to take... under the wing. I had that same, or very similar, Ritchie compass in my Amazon shopping cart till I found one by Silva that looked like it might provide a slimmer profile and perhaps simpler mounting and more adjustable viewing angle. Undec...
by taildrags
Thu Oct 22, 2020 4:48 pm
Forum: Pietenpol Builders Forum
Topic: compass location
Replies: 7
Views: 389

compass location

I remember seeing someone's setup for mounting their compass on the underside of the wing, which looked like a pretty slick setup. I'm thinking of moving mine out of the panel and I don't have my fuel tank up in the centersection and could consider mounting the compass up under there. Any ideas woul...
by taildrags
Thu Oct 15, 2020 11:10 pm
Forum: Pietenpol Builders Forum
Topic: Work Area Question
Replies: 8
Views: 694

Re: Work Area Question

I built much of the wooden framing of my Flying Squirrel, and did a lot of the Aeropoxy layups on it, in my half of our garage here in southern Oregon. A lot of cold and clammy days and nights and our garage was unheated, uninsulated, and so was the garage door. What I did was get a propane-fired to...
by taildrags
Mon Oct 12, 2020 10:39 pm
Forum: Pietenpol Builders Forum
Topic: Speed Queen water pump? Model A engine.
Replies: 6
Views: 501

Re: Speed Queen water pump? Model A engine.

John; it sounds like you've found a source for those pumps. By any chance have you seen any specifications for them? In particular, flowrate that could be compared to the Ford A pump, probably gallons/minute at a certain RPM or graphed by flowrate across a range of speeds? I don't fly a water-cooled...
by taildrags
Mon Oct 05, 2020 11:42 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Richard; I'm sure it'll work out OK... I just thought it might inspire confidence if you had some measurements off another airplane. Sounds like you and I are mighty close on ours so get busy fabricating those brake master mounts and actuators. You'll like having brakes. Tom: looking at the geometry...
by taildrags
Sun Oct 04, 2020 10:35 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Richard; not saying "do it this way", just putting additional food for thought out there. I'm a bit curious about your leg length. Looking at my brake pedal location fore-and-aft relative to yours, either our cockpits are differently configured by a couple of inches, or my legs are shorter...
by taildrags
Sun Oct 04, 2020 12:23 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Aha. I knew I had a thread going somewhere on this subject. Here are the measurements of my setup, as well as a photo of the starboard side brake showing the welded-on tab on the pedal to make it easier to reach with the toe.

-Oscar
brake_dims.jpg
by taildrags
Wed Sep 30, 2020 10:55 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Richard: I think you're getting it! If it would help, I'd be happy to take measurements of the triangulated fuselage framing space where my brakes are mounted, as well as where the mounting points are located on the diagonal, to give you a point of reference to see if we're close to what you've come...
by taildrags
Wed Sep 23, 2020 11:24 am
Forum: Pietenpol Builders Forum
Topic: New Piet owner near St. Paul
Replies: 6
Views: 657

Re: New Piet owner near St. Paul

Jeffrey; note that if your GN-1 is built per plans, the cabane struts will be vertical because the wing cannot physically be moved aft on a GN-1. The attachments for the struts do not create "pivoting four-bar linkages" as they do on the Pietenpol. And don't start worrying about W&B be...
by taildrags
Tue Sep 22, 2020 11:08 pm
Forum: Pietenpol Builders Forum
Topic: New Piet owner near St. Paul
Replies: 6
Views: 657

Re: New Piet owner near St. Paul

Jeffrey; if I may offer one bit of advice, here's something that you can do that will cost you nothing, requires changing or removing *nothing* from what you have there, and will provide you with a very valuable amount of information about your airplane before you spend any time or money modifying a...
by taildrags
Fri Sep 18, 2020 10:16 am
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Ken; got it. So you used the TSO'd braided nylon electrical flex conduit from Aircraft Spruce for that electrical wiring? ;o) :lol:

-Oscar
by taildrags
Thu Sep 17, 2020 10:24 am
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Ken: what's the nylon braided hose running down and out the bottom of the plane?

-Oscar Z.
Medford, OR
by taildrags
Mon Sep 14, 2020 10:46 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Richard; see photo of the toe brake setup on Bill Rewey's Piet. Mine were fabricated after the same fashion. They sit pretty much on each side of the passenger's thighs, on the sides of the fuselage. Simple and effective. Bill's actually have parking brakes, which are the metal tabs on top of the cy...
by taildrags
Mon Sep 14, 2020 3:07 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

Richard; do you have any preference as to whether you go with heel or toe brakes?

Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
"Bill Rewey style" toe brakes
by taildrags
Wed Aug 19, 2020 10:56 am
Forum: Pietenpol Builders Forum
Topic: Basic woodworking question
Replies: 2
Views: 731

Re: Basic woodworking question

Will; I'm very surprised that no one has stepped up to address your questions yet. I'm no expert when it comes to woodworking, but your questions don't require deep knowledge of woodworking to address, especially when it comes to building an Air Camper. I may take a swing at it if no one else does i...
by taildrags
Wed Aug 12, 2020 10:42 pm
Forum: Pietenpol Builders Forum
Topic: wing removal for transport
Replies: 1
Views: 394

Re: wing removal for transport

Hello, Clyde; Having done this several times with my Air Camper (removed and reinstalled the wings), I can tell you that if it's been constructed as per the plans and with reasonable care, the cables will not come off the pulleys inside the wings and you needn't worry about that, but even if they do...
by taildrags
Tue Aug 11, 2020 10:22 am
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1713

Re: Checking in from Western PA

Barrett; I only carry liability on 41CC (it's required for rental of hangars on my home field), $1M, and I have mine with Global Aerospace through their agent Falcon Insurance in Kerrville, TX. It costs me one dollar a day... $365/yr... and I'm the only operator on the policy right now.

-Oscar
by taildrags
Mon Aug 10, 2020 10:25 am
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1713

Re: Checking in from Western PA

Barrett; I am located in Medford, Oregon. On the I-5 corridor, about 30 miles north of the Oregon-California state line. About San Marcos TX, that's not too far from where I made my first solo... grass strip at Tims Airpark north of Austin, long gone. My Stromberg carb actually has the mixture contr...
by taildrags
Sun Aug 09, 2020 10:47 pm
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1713

Re: Checking in from Western PA

I just realized that Pietenvair pilot Ed "KTOWN" Knouse might be reading posts to this list and if he read what I posted, I would instantly be branded as a 'fraidy cat sissy for worrying about flying my Piet way up there at 7,500 feet. KTOWN flew in the "Dragon Lady" U-2... servi...
by taildrags
Sun Aug 09, 2020 4:01 pm
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1713

Re: Checking in from Western PA

Barrett; great writeup, great first adventure in your airplane! Many of the same sensations and thoughts most of us have had while flying our planes, and I'm sure you got a lot of people smiling knowingly and nodding their heads in agreement while they read. One thing I'll mention when I see that yo...
by taildrags
Sun Aug 09, 2020 3:31 pm
Forum: Pietenpol Builders Forum
Topic: Center Brace Fittings dimiensions
Replies: 6
Views: 740

Re: Center Brace Fittings dimiensions

Why remake them? They're through-bolted to the stabilizer, so you could install the fork ends onto them with the parts loose, then cinch everything down. At that point it won't matter how close they are to the fabric, because the cable end fitting will already be attached to the bent tab. Oscar Zuni...
by taildrags
Fri Aug 07, 2020 4:31 pm
Forum: Pietenpol Builders Forum
Topic: Center Brace Fittings dimiensions
Replies: 6
Views: 740

Re: Center Brace Fittings dimiensions

John; see pic (Mike Cuy's beautiful Piet)- are these the fittings and wires you're referring to? Not sure what the question is.

-Oscar Zuniga
Medford, OR
tail_braces.jpg
by taildrags
Thu Aug 06, 2020 10:47 pm
Forum: Pietenpol Builders Forum
Topic: Part 103 Sky Scout?
Replies: 7
Views: 797

Re: Part 103 Sky Scout?

Cap't Trunk: there have been various tests and comparisons of latex house paint on aircraft fabric and there is a possibility of saving some weight by going that route. Rick Holland and Kirk Huizenga ran some documented tests and I began some tests of my own but didn't get to the actual endurance pa...