Search found 312 matches

by taildrags
Tue Mar 31, 2020 3:42 pm
Forum: Pietenpol Builders Forum
Topic: attaching post hinge?
Replies: 2
Views: 19

Re: attaching post hinge?

JimBob; my guess is that it wouldn't hurt anything if you just give the countersinks on that one hinge half a light touch with a standard countersink to bring the 100 degree to 90 degrees and use the hardware that is readily available. It shouldn't put the screw heads in very deep past flush if you ...
by taildrags
Tue Mar 31, 2020 12:22 am
Forum: Pietenpol Builders Forum
Topic: stabilizer turnbuckle
Replies: 3
Views: 46

Re: stabilizer turnbuckle

JimBob; using 1/8" cable for the tail brace wires? The breaking strength of that cable, whether 1x19 or 7x19 (1x19 for standing rigging or 7x19 for cables running and flexing over pulleys) is at least 2000 lbs and those wires will never see that. You should consider something a little thinner, perha...
by taildrags
Thu Mar 26, 2020 10:56 am
Forum: Pietenpol Builders Forum
Topic: How to end the turtle deck
Replies: 3
Views: 61

Re: How to end the turtle deck

Earl, that's beautiful work, and an elegant way to fair the turtledeck into the tail feathers!

Oscar Zuniga
Medford, OR
by taildrags
Mon Mar 23, 2020 10:07 am
Forum: Pietenpol Builders Forum
Topic: Wing Rotisserie Operational
Replies: 4
Views: 66

Re: Wing Rotisserie Operational

Interesting attachment at the tip ends.

Oscar Zuniga
Medford, OR
by taildrags
Sun Mar 08, 2020 1:28 pm
Forum: Pietenpol Builders Forum
Topic: Ford GAV
Replies: 4
Views: 93

Re: Ford GAV

JCB: that's a very sanitary test stand setup. Nice! What are you driving on the output end of the crank? Is that a hydraulic pump or something that you can use as a variable load dyno?

Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Sun Mar 08, 2020 1:17 pm
Forum: Pietenpol Builders Forum
Topic: Rudder cables
Replies: 3
Views: 75

Re: Rudder cables

Stephen; your remarks are welcome; thank you. However, I did not build 41CC... it was first begun by Joe Czaplicki and constructed up through complete fuselage on the gear and with an A65 and mount on the airplane; ribs and tail surfaces completed. Joe used resorcinol glue on the parts of the airpla...
by taildrags
Sat Mar 07, 2020 6:23 pm
Forum: Pietenpol Builders Forum
Topic: Rudder cables
Replies: 3
Views: 75

Re: Rudder cables

Here's how the rudder cables are routed on 41CC. Series of five pix below. I'm not sure why or how the server manipulates the pictures, but despite my best efforts, some of them get rotated a different way than I want them to. Sorry about that. cable1.JPG First shot is looking at the left rudder bar...
by taildrags
Sat Mar 07, 2020 11:32 am
Forum: Pietenpol Builders Forum
Topic: Rudder Post/bar typo
Replies: 5
Views: 114

Re: Rudder Post/bar typo

I had some slop in that connection when I got the airplane and if I remember correctly, I was able to find a metric bolt that provided a better fit. M7 maybe? That's 0.2756" and 3/8" .049 tube has an ID of 0.277"... a gap of seven ten-thousandths. If you use an AN4, the gap will be as much as 1/64"....
by taildrags
Sun Mar 01, 2020 1:32 pm
Forum: Pietenpol Builders Forum
Topic: N9252A
Replies: 4
Views: 133

Re: N9252A

Well OK... that's quite a run for me from Medford in a Piet! I was just thinking maybe of going out there to see your airplane sometime. Is it airworthy? Do you plan to ferry it, or trailer it? Where in SoCal is it located? As you know, there are a number of Piet pilots/builders down that way and if...
by taildrags
Sat Feb 29, 2020 9:35 pm
Forum: Pietenpol Builders Forum
Topic: N9252A
Replies: 4
Views: 133

Re: N9252A

Ron; where abouts in Eastern Oregon are you located?

Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Thu Feb 27, 2020 10:11 pm
Forum: Pietenpol Builders Forum
Topic: Long Fuselage dimension
Replies: 4
Views: 87

Re: Long Fuselage dimension

My 1933 Hoopman plans show the horizontal stab being 18" and the mounting space between the end of the turtledeck and the tailpost being the same 18", so I have no idea where the extra 7/8" came from.

Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Thu Feb 13, 2020 10:42 pm
Forum: Pietenpol Builders Forum
Topic: Spar thickness
Replies: 10
Views: 530

Re: Spar thickness

Wannabe- the ribs should slide onto the spars but they need to be a snug fit. The best way to do that is to cut off some short stub ends of your spar stock (assuming that you've got a little to spare... and the ends usually have a little checking or scuffing anyway)- and when you build your rib jig,...
by taildrags
Wed Feb 12, 2020 11:04 pm
Forum: Pietenpol Builders Forum
Topic: Spar thickness
Replies: 10
Views: 530

Re: Spar thickness

Wannabe- there are Piets flying with 3/4" thick spars, although I don't recommend that without some knowledge of what you're doing and what type of wood it is. However, I would consider "a shade thinner" than 1" to be just fine. Just be sure to compensate for that if you decide to route out sections...
by taildrags
Sun Feb 09, 2020 10:06 pm
Forum: Pietenpol Builders Forum
Topic: Torque tube front collar
Replies: 2
Views: 222

Re: Torque tube front collar

Pretty sure my airplane has AN3 bolts with nylock nuts all along the torque tube and that makes it easily removable, but given the degree of difficulty I've found working up under the front as I age, you should also be able to use any of a number of simpler attachments as long as they don't obstruct...
by taildrags
Thu Feb 06, 2020 9:55 pm
Forum: Pietenpol Builders Forum
Topic: shock struts
Replies: 6
Views: 305

Re: shock struts

If so, the "spring in a can" setup should work just fine. There is a bit of a delicate geometry where the two shock struts cross each other, but you should be able to work that out by adjusting the mounting point of one or the other of the struts up at the top end.

-Oscar
by taildrags
Thu Feb 06, 2020 9:53 pm
Forum: Pietenpol Builders Forum
Topic: shock struts
Replies: 6
Views: 305

Re: shock struts

Bill: are your struts set up sort of like some variation of this?
gear.jpg
Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Mon Jan 20, 2020 10:15 am
Forum: Pietenpol Builders Forum
Topic: Control Horns
Replies: 9
Views: 255

Re: Control Horns

Ah. Now I see. Earl, you may want to tweak the angle of the leading edge of your vertical stabilizer after you test-fly the aircraft. Mine is cranked over a little bit to help reduce some of the yaw that I was experiencing even after adding a rudder trim tab and shifting the nose of the engine over ...
by taildrags
Sun Jan 19, 2020 1:11 pm
Forum: Pietenpol Builders Forum
Topic: Control Horns
Replies: 9
Views: 255

Re: Control Horns

Oh yeah, and I forgot to say why I was thinking that way. The vertical stabilizer brace wire brackets each take the load of two wires, while the horizontal stabilizer brace wires only take the load of one apiece.

-Oscar
by taildrags
Sun Jan 19, 2020 1:08 pm
Forum: Pietenpol Builders Forum
Topic: Control Horns
Replies: 9
Views: 255

Re: Control Horns

See, this is where my usual mental logic has broken down. It sounds like the desire to keep the tail light pushes towards making all the fittings out of the 13 ga material. I look at the tail brace anchor straps and see a difference in the metal gauges with no explanation given, and I tend to make a...
by taildrags
Sun Jan 19, 2020 12:48 pm
Forum: Pietenpol Builders Forum
Topic: Pilot Headrest/Helmet box
Replies: 3
Views: 177

Re: Pilot Headrest/Helmet box

Corky constructed almost the entire pilot's seat back as a hinged panel, including the seatback padding. It's latched at the top with a hardware store quarter-turn keyed latch and hinged at the bottom so it swings forward. I attached a seatback map pouch to the inside of the seatback (AutoZone acces...
by taildrags
Sun Jan 12, 2020 12:19 pm
Forum: Pietenpol Builders Forum
Topic: Photo update from my airplane factory
Replies: 7
Views: 352

Re: Photo update from my airplane factory

Ed; maybe I'm imagining this, but I seem to recall that it was either Paul Poberezny or Tony Bingelis who fabricated parts for their experimental aircraft while overseas in the military. They worked out of a trunk that contained their tools and materials and made one piece at a time, so I suppose yo...
by taildrags
Tue Jan 07, 2020 11:59 pm
Forum: Pietenpol Builders Forum
Topic: First flight of 2020
Replies: 6
Views: 301

Re: First flight of 2020

My BasicMed exam today went unbelievably smooth. Quick and easy, done and done! Now to line up that flight review... and I'm thinking that since I'm going to be pulling the wheels to repack the bearings for the annual on my airplane anyway, I might as well swap out my 6.00x6 Aero Trainer tires & tub...
by taildrags
Tue Jan 07, 2020 10:35 am
Forum: Pietenpol Builders Forum
Topic: Photo update from my airplane factory
Replies: 7
Views: 352

Re: Photo update from my airplane factory

Shop? Who's got a shop? Wooden table under a shade tree ;o)

-Oscar
by taildrags
Sun Jan 05, 2020 1:14 pm
Forum: Pietenpol Builders Forum
Topic: Wing Rotisserie
Replies: 4
Views: 204

Re: Wing Rotisserie

Are you building the one-piece wing, or two-piece with centersection? Big difference. I'm assuming you're building separate outer wing panels, which makes it easier. You're probably not going to find many wing rotisseries than one like this Super Cub builder fabricated: http://www.mykitlog.com/users...
by taildrags
Sat Jan 04, 2020 9:41 pm
Forum: Pietenpol Builders Forum
Topic: First flight of 2020
Replies: 6
Views: 301

Re: First flight of 2020

Well, good on ya, Tools! Thanks for breaking the ice! Many more enjoyable flights in '20 to you, sir.

Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Sun Dec 29, 2019 9:20 pm
Forum: Pietenpol Builders Forum
Topic: First flight of 2020
Replies: 6
Views: 301

First flight of 2020

Since it's so awfully quiet on this list, I thought I'd throw down the gauntlet to any who might be interested in making their first flight of the new year on Wednesday this week. It's forecast to be rainy and cold here in my neck of the woods so I don't know if I'll even make the attempt, but if it...
by taildrags
Mon Dec 16, 2019 3:48 pm
Forum: Classified Ads
Topic: Air camper parts.
Replies: 2
Views: 480

Re: Air camper parts.

Sounds like a very affordable way for somebody to get a quick start on a rolling Piet fuselage. I'm sure potential buyers will be asking you for photos of what you've got, especially some close-ups of the fuselage glue joints and the welds on the landing gear, things like that. Oscar Zuniga Air Camp...
by taildrags
Mon Dec 02, 2019 10:23 pm
Forum: Pietenpol Builders Forum
Topic: Actual Empty Weight of Pietenpol
Replies: 27
Views: 997

Re: Actual Empty Weight of Pietenpol

PietenAsia; the Riblett airfoil is the GA30-612, which as I understand Mr. Riblett's nomenclature means that it's a General Aviation airfoil with its maximum thickness at 30% of chord, and at that point it's 12% deep. So, for a 60" chord such as on the Air Camper, the maximum thickness would be abou...
by taildrags
Tue Nov 19, 2019 4:01 pm
Forum: Pietenpol Builders Forum
Topic: Open Cockpit for those with Glasses
Replies: 5
Views: 355

Re: Open Cockpit for those with Glasses

I bought a pair of those military-issue tanker goggles and have worn them with glasses and a canvas flying helmet, flying my Piet. They work pretty well but like most of these, in order to get a good tight seal (they were made for wearing in dust and sand), they obstruct side view considerably. They...
by taildrags
Sun Nov 17, 2019 9:41 pm
Forum: Pietenpol Builders Forum
Topic: Actual Empty Weight of Pietenpol
Replies: 27
Views: 997

Re: Actual Empty Weight of Pietenpol

Another thing to consider is that the Pitts employs the NACA M6 airfoil and has a 36" chord. The M6 is a 12% airfoil so that makes the depth of the wing ribs about equal to that of the Piet airfoil (12% of 36" = 4.32" for the Pitts) but the Piet airfoil is about an 8% (4-3/4" deep spars and a 60" ch...
by taildrags
Sun Nov 17, 2019 12:30 am
Forum: Pietenpol Builders Forum
Topic: Actual Empty Weight of Pietenpol
Replies: 27
Views: 997

Re: Actual Empty Weight of Pietenpol

PietenAsia; I concur that there are some things that can be changed or sacrificed to bring down the weight. Example: my Air Camper has 6.00x6 Cleveland wheels with hydraulic brakes and corresponding tires and one could easily build with 5" Azusa wheels and smaller tires and no brakes and save some w...
by taildrags
Thu Nov 14, 2019 12:25 am
Forum: Pietenpol Builders Forum
Topic: Wing vs Fuse fuel tank for Corvair powered Piet
Replies: 2
Views: 247

Re: Wing vs Fuse fuel tank for Corvair powered Piet

auburntsts; I'll chime in with my take on this. I do not have a Corvair powered Piet, but considering that the carb on my Continental A75 is probably in just about the same location as the one on a Corvair Piet might be, I'll just address the fuel tank question without implicating the differences be...
by taildrags
Wed Nov 13, 2019 10:15 pm
Forum: Pietenpol Builders Forum
Topic: Actual Empty Weight of Pietenpol
Replies: 27
Views: 997

Re: Actual Empty Weight of Pietenpol

PietenAsia; not saying it can't be done, just suggesting that you not try to pare the weight down on structural elements without doing some structural analysis. My airplane was re-weighed in 2009 when I swapped the A65 on it for an A75. No fuel, no oil, no seatbelts or harness in the front cockpit, ...
by taildrags
Wed Nov 13, 2019 11:54 am
Forum: Pietenpol Builders Forum
Topic: Actual Empty Weight of Pietenpol
Replies: 27
Views: 997

Re: Actual Empty Weight of Pietenpol

OK, understood. If you want a 2-place but you're wondering about reducing the longerons and cross-bracing from 1"x1" to 3/4" x3/4", consider this. Here in the US, the design loading for "Normal" category certification (not Utility, not Aerobatic) is +3.8G and -1.52G. The usual design weight for an F...
by taildrags
Wed Nov 13, 2019 10:46 am
Forum: Pietenpol Builders Forum
Topic: Actual Empty Weight of Pietenpol
Replies: 27
Views: 997

Re: Actual Empty Weight of Pietenpol

PietenAsia: why bother with all of those revisions? Here's something that will meet your weight criteria without modifications: http://rogermann.org/ragwing/designs/rw1/

Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Mon Nov 04, 2019 11:36 pm
Forum: Pietenpol Builders Forum
Topic: ELT Antenna
Replies: 3
Views: 258

Re: ELT Antenna

Tbopper, it is my understanding and belief that the use of existing 121.5 Mhz ELTs is not prohibited... only the manufacture, importation, and sale of them, and of course the certification of any new models of them. Therefore, I believe your inspector was in error in denying your registration on the...
by taildrags
Mon Nov 04, 2019 11:04 am
Forum: Pietenpol Builders Forum
Topic: How many Piets have Dual Controls? What about cabane struts?
Replies: 1
Views: 288

Re: How many Piets have Dual Controls? What about cabane struts?

I don't think I've seen any Piets that don't have at least partial controls up front (stick, rudder pedals, throttle), but quite a few people remove the front stick to make it easier to get non-pilot passengers in and out or to stow gear. Not having controls up front means it won't be possible to sa...
by taildrags
Mon Oct 28, 2019 10:08 pm
Forum: Pietenpol Builders Forum
Topic: epoxy failure
Replies: 5
Views: 440

Re: epoxy failure

Let me try to understand which member you're referring to. The crossmember that secures the bottom edge of the pilot's seat is also the aft pivot mounting point for the aileron bellcrank beam that links the two control sticks. Where it mounts to that crossmember, the pivot bearing has two bolts goin...
by taildrags
Wed Oct 02, 2019 10:06 am
Forum: Classified Ads
Topic: WTB Corvair core
Replies: 4
Views: 610

Re: WTB Corvair core

Luke; start out by giving your location. The cost of shipping a core engine is going to be more than the cost of the engine so it's best to find one close to where you are so you can drive to where you're going to pick it up from.

Oscar Zuniga
Medford, OR
by taildrags
Wed Sep 25, 2019 10:49 pm
Forum: Pietenpol Builders Forum
Topic: Bill Rewey
Replies: 14
Views: 2513

Re: Bill Rewey

Tom: yes... that's it! But the detail isn't just for a GPS! If you'll look closely, Bill shows a similar holder for a handheld radio, mounted to the longeron ;o) Thanks, you're a lifesaver! I've got to get a decent handheld because my very small and old Icom requires too many button presses to chang...
by taildrags
Tue Sep 24, 2019 11:03 pm
Forum: Pietenpol Builders Forum
Topic: Bill Rewey
Replies: 14
Views: 2513

Re: Bill Rewey

Pat; many thanks for that! And I think it's a fitting tribute to Bill to keep those drawings in his original hand-written and -drawn format, but it would be short work to redraw any of them in CAD to produce crisp graphics and text if there is any interest in 'modernizing' them. I'm hesitant to do t...
by taildrags
Mon Sep 23, 2019 1:15 pm
Forum: Pietenpol Builders Forum
Topic: Bill Rewey
Replies: 14
Views: 2513

Re: Bill Rewey

Pat: earlier, you made mention about Bill's packet of details and construction hints being handed over to the BPA to administer. I'm at the point where I'm considering a more permanent setup for my handheld COM radio and one of the details that was in Bill's packet is an aluminum holder for such a r...
by taildrags
Sun Sep 22, 2019 10:07 pm
Forum: Pietenpol Builders Forum
Topic: Aircampers in New England?
Replies: 3
Views: 456

Re: Aircampers in New England?

Old Rhinebeck Just punch in NY94 and hit 'GOTO' and follow the course deviation indicator ;o)

-Oscar
by taildrags
Tue Sep 17, 2019 3:31 pm
Forum: Pietenpol Builders Forum
Topic: Any Piet Flyers in WA state?
Replies: 6
Views: 587

Re: Any Piet Flyers in WA state?

Hey, nice airplane! Can't quite make out the graphics on the side of the fuselage. Got any other pix? And what size are your tires? I have 6.00x6s on my airplane right now but also have a set of 8s in the hangar that I'd like to put on it instead. I like the look of the slightly larger tires. Oscar ...
by taildrags
Tue Sep 17, 2019 11:22 am
Forum: Pietenpol Builders Forum
Topic: Any Piet Flyers in WA state?
Replies: 6
Views: 587

Re: Any Piet Flyers in WA state?

Well, Jake Schultz in Issaquah is/was building a steel-tube frame Piet with a Rotec radial, but it's not flying yet and he's been AWOL from the list for awhile. I don't know of any others.

Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Wed Sep 04, 2019 10:09 am
Forum: Pietenpol Builders Forum
Topic: Any Piet Owners/Builders in SC
Replies: 4
Views: 544

Re: Any Piet Owners/Builders in SC

Just maybe not a great time to visit this week though, huh? Looks like Dorian is soaking that area right now...

Oscar Zuniga
Medford, OR
Air Camper NX41CC, A75 power
by taildrags
Thu Aug 22, 2019 11:05 pm
Forum: Pietenpol Builders Forum
Topic: HomebuiltHELP video on Piets
Replies: 0
Views: 908

HomebuiltHELP video on Piets

I just watched the latest installment of HomebuiltHELP "Tip of the Week" videos, this one featuring the Piet. Specifically, interviews with Dan Helsper and Randy Bush sharing their love of our favorite airplane at Oshkosh. Available on YouTube- https://www.youtube.com/watch?v=_MfyH8weTag&feature=em-...
by taildrags
Sun Aug 18, 2019 10:00 pm
Forum: Pietenpol Builders Forum
Topic: Floor
Replies: 1
Views: 520

Re: Floor

Because Harbor Freight needs the business, that's why!

-Oscar
by taildrags
Wed Aug 14, 2019 10:40 am
Forum: Pietenpol Builders Forum
Topic: Bass wood vs sitka or Doug Fir
Replies: 8
Views: 1001

Re: Bass wood vs sitka or Doug Fir

My recommendation on changing the fuselage framing member sizes is "don't do it". You'll end up scratching your head more often than getting anything done, because changing the dimensions will lead to changes in many, many other connections throughout the airplane and you'll probably be thinking, sk...
by taildrags
Sun Aug 11, 2019 11:14 pm
Forum: Pietenpol Builders Forum
Topic: Bass wood vs sitka or Doug Fir
Replies: 8
Views: 1001

Re: Bass wood vs sitka or Doug Fir

Brian; just looking at the Forest Products Laboratory tables that list the mechanical properties of various woods, American basswood is considerably weaker than both Sitka spruce and Douglas fir in most of the important characteristics. It is lighter than either of the other two woods, but proportio...