Search found 400 matches

by taildrags
Mon Nov 09, 2020 10:32 am
Forum: Pietenpol Builders Forum
Topic: Luscombe wing
Replies: 9
Views: 165

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: 165

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: 165

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: 160

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: 165

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. The...
by taildrags
Wed Nov 04, 2020 10:25 am
Forum: Pietenpol Builders Forum
Topic: Tall pilots and leg room
Replies: 7
Views: 160

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 out over ...
by taildrags
Tue Nov 03, 2020 4:19 pm
Forum: Pietenpol Builders Forum
Topic: Vertical Stabilizer flutter
Replies: 14
Views: 287

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: 287

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: 287

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: 275

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: 172

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: 172

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: 172

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: 172

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: 510

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: 275

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: 24
Views: 982

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: 24
Views: 982

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 than your...
by taildrags
Sun Oct 04, 2020 12:23 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 24
Views: 982

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: 24
Views: 982

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: 447

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 before you know ...
by taildrags
Tue Sep 22, 2020 11:08 pm
Forum: Pietenpol Builders Forum
Topic: New Piet owner near St. Paul
Replies: 6
Views: 447

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: 24
Views: 982

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: 24
Views: 982

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: 24
Views: 982

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: 24
Views: 982

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: 569

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: 287

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: 1266

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: 1266

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: 1266

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... service ceiling somewhere...
by taildrags
Sun Aug 09, 2020 4:01 pm
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1266

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: 528

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: 528

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: 564

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...
by taildrags
Tue Aug 04, 2020 10:51 pm
Forum: Pietenpol Builders Forum
Topic: EAA 461 Pietenpol project - questions
Replies: 10
Views: 749

Re: EAA 461 Pietenpol project - questions

Robbie: also, look at this picture of Chris Rusch's Piet, which has wooden vee legs and large spoked wheels. The plane isn't quite in the level attitude, but notice where the axle centers are relative to wing leading edge, but also notice that the cabanes are swept back a bit. In fact, the cabanes o...
by taildrags
Tue Aug 04, 2020 10:40 pm
Forum: Pietenpol Builders Forum
Topic: EAA 461 Pietenpol project - questions
Replies: 10
Views: 749

Re: EAA 461 Pietenpol project - questions

Robbie; there's quite a bit of difference in reworking a split-style, welded-steel landing gear with spring struts (or bungees) and reworking a straight-axle, "Jenny style" landing gear with wooden gear legs. Which style of gear does the project have on it? In the steel tube landing gear case you'd ...
by taildrags
Sun Aug 02, 2020 10:54 pm
Forum: Pietenpol Builders Forum
Topic: N34KP
Replies: 21
Views: 2447

Re: N34KP

Richard; I might just write this up for the BPA Newsletter as a little tip or idea for other builders. Would you mind if I used one of your photos, zoomed in to show the release?

-Oscar
by taildrags
Sun Aug 02, 2020 10:49 pm
Forum: Pietenpol Builders Forum
Topic: Part 103 Sky Scout?
Replies: 7
Views: 564

Re: Part 103 Sky Scout?

Hey, Cap'n Trunk- in the Air Camper, the passenger is positioned just about on the CG, which is between 25 and 33% of wing chord. Sits directly under the wing. The pilot sits slightly under the trailing edge of the wing... some more under it, some less, depending on whether they've shifted the wing ...
by taildrags
Sun Aug 02, 2020 12:37 pm
Forum: Pietenpol Builders Forum
Topic: N34KP
Replies: 21
Views: 2447

Re: N34KP

Richard: success! I did some smoothing and re-shaping of the tail tiedown release "hook" to encourage the tiedown rope to slide out of it, and I cheated just a bit by using some inexpensive nylon rope for a tiedown since it is slicker than other types of rope or cord. First tug on the release, zip-z...
by taildrags
Thu Jul 30, 2020 10:35 pm
Forum: Pietenpol Builders Forum
Topic: Trailering a Piet
Replies: 8
Views: 709

Re: Trailering a Piet

Sorry... I misspoke. The enclosed box truck that I hauled my Piet from Texas to Oregon in was not a Ryder, it was a Penske. I think it was the 26 footer because it wasn't that much more than the 22 footer and I had to pick up a motorcycle in California as well. I picked the Penske over any of the UH...
by taildrags
Thu Jul 30, 2020 10:03 am
Forum: Pietenpol Builders Forum
Topic: Trailering a Piet
Replies: 8
Views: 709

Re: Trailering a Piet

Been there, done that. Easiest way was in the big Ryder truck.
Steve_Piet2.jpg
PC310003.jpg
Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Mon Jul 27, 2020 10:07 am
Forum: Pietenpol Builders Forum
Topic: wiring a PTT switch
Replies: 2
Views: 318

Re: wiring a PTT switch

OK, I'll take a look at that. I have an older Flightcom intercom and will see if that provides a solution, but I'm not hopeful.

-Oscar
by taildrags
Sun Jul 26, 2020 10:50 pm
Forum: Pietenpol Builders Forum
Topic: wiring a PTT switch
Replies: 2
Views: 318

wiring a PTT switch

Howdy, radio-frequency Pieters; Trying to deal with an old Icom handheld with loose connections got too frustrating for me so I decided to buy one of Sporty's new handheld COMs, the PJ2. Just COM, nothing else, and it has headset jacks that accept standard aviation headset dual plugs, done. Well, no...
by taildrags
Sun Jul 26, 2020 5:30 pm
Forum: Pietenpol Builders Forum
Topic: N34KP
Replies: 21
Views: 2447

Re: N34KP

Richard; good point... it's easy enough for me to push the tail over before climbing in, so that the rope has the best angle to pull on the hook. That might help too. The geometry of my setup is different from yours, but in either case the effect of not having the tiedown pulling correctly results i...
by taildrags
Sun Jul 26, 2020 4:23 pm
Forum: Pietenpol Builders Forum
Topic: N34KP
Replies: 21
Views: 2447

Re: N34KP

Installed my tail tiedown release yesterday and it *almost* works as intended but the hook needs a little smoothing and shaping so it will release the tiedown. A tug on the lanyard releases the hook alright, but the geometry doesn't quite allow the tiedown rope to slide off. It'll soon be in service...
by taildrags
Sun Jul 26, 2020 4:18 pm
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1266

Re: Checking in from Western PA

Oh yeah, and sorry for the string of posts here, but check the mounting brackets on your cooling air scoops during preflight inspections. Mine cracked several different brackets several different times due to fatigue from being pummeled in the propeller slipstream, until I finally replaced them with...
by taildrags
Sun Jul 26, 2020 4:11 pm
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1266

Re: Checking in from Western PA

Aha. I just looked at your pix again and see that you're also flying a fuel tank up front, and that you have a metal prop. Good deal... the additional weight of a metal prop couldn't be in a better place than way out there on the nose. That will also account for some of the empty weight difference b...
by taildrags
Sun Jul 26, 2020 4:07 pm
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1266

Re: Checking in from Western PA

Barrett; you'll find that there are a number of commercial pilots building and flying Air Campers, mostly for the same reason you are... the simple joy of flying an honest airplane without a lot of cost and trouble. Neither the landing nor the takeoff checklists on these airplanes has more than a ha...
by taildrags
Thu Jul 23, 2020 11:08 pm
Forum: Pietenpol Builders Forum
Topic: Checking in from Western PA
Replies: 18
Views: 1266

Re: Checking in from Western PA

You're in the right place, Spark6. We speak Air Camperese here, but with many different accents (as you'll find out). You'll find that the configuration of Five-Tango-Mike is a common one, with a small Continental up front, no electrics, no starter. That describes my airplane, NX41CC, with an A75 on...