Brodhead Pietenpol Association

tom kreiner

Ask your supplier to search for 34MoCr4 steel, Which has a tensile strength that’s about 10% higher than 4130. You will want to use fully annealed or preferably, normalized, steel in your application. If you do find some let us all know where you located it and what the cost is. Whatever you do stee...

tom kreiner

Several months back, Oscar and I posted information regarding Aileron stick travel, the use of stops, etc. It turns out that during flight, the stick CAN NOT STRIKE THE FLOOR, as your knees create a defacto stop. That said, several DAR's will require stops be added to the plane... meh One practical ...

tom kreiner

Lots of Piet builders are using the small Continental, from A-65 thru O-200, and might have had an issue with low oil pressure, so I made this tool to clean up the Pressure Relief Valve Seat. The tool is made from an old Oil Pressure Relief Valve Cap, P/N 21113. The Cap is carefully bored completely...

tom kreiner

Terry, One of my chapter members purchased an S-LSA RV-12, and changed it from S to E... The reason was to permit him to perform both repairs and maintenance. This was some form of a factory built RV, which permitted the S designation. Rules permit the change from S to E, but NOT from E to S, as S i...

tom kreiner

You read my mind, Terry! Actually, the proposition of redesigning the entire aircraft is daunting, even to an enginerd like me! Even the issue of determining W&B from Jacqueline's post is concerning, as she's mentioned not only downsizing the fuselage, but reducing it's length, then adding a rat...

tom kreiner

Varmint,

Please reply and drag the article into new reply so we can all enjoy it!

Thanks,

TK

tom kreiner

Gents,

Ten or so years ago, I came across the attached by one D. Michael Shuck. Don't know where to locate the elusive Dr., but his paper is background for a lively discussion regarding the FC-10 airfoil.

Enjoy; be sure to make yourself comfortable prior to reading!

TK

tom kreiner

After my reply, it occurred to me that like others have done, these were the Ace Hdwre version of hardware while your next package with proper A/C hardware arrived...

tom kreiner

Doug, Prior to completion, you'll be swapping the bolts that don't protrude from their nuts for some longer lengths, right?

tom kreiner

That’s why we have EAA chapters!

My chapter has certified scales, mill/drill, brake, a Tig welder, and more.

I just took a look at Amazon, half a dozen for less than $200.

tom kreiner

Consider that there are some 17 cables, maybe more depending on your landing gear, etc., and each of those cables will need end fittings. The old tried and true, but kinda ugly method is using a thimble and Nicopress sleeves to fashion an eye. Then figure out how to attach the eye to the bracket on ...

tom kreiner

Dan,

Beautiful work, and beautiful work,a ship!

What is the angled blue steel strap at the rear end of the plywood on the S’board side of the fuselage?

tom kreiner

Your sources ar probably giving you good info, as the 565 is for a lower ambient temp. For FWF, the 567 is recommended. If I had to grab only 1 tube, I'd make it the 567, as it can be used it without question in both environments. I also keep a tube at the house, for plumbing fixtures, etc. LOL We a...

tom kreiner

Several years ago we had a speaker from Loctite deliver a lunch and learn at our EAA chapter. (If any of you other guys in EAA chapters would like to do the same thing, Loctite reps always seem to be willing - and have a small budget - to put on a nice program like that.) During the program we speci...

tom kreiner

In a series of emails with Oscar sometime ago together we determined that indeed the stick is stopped by your knees prior to touching the stops. In other words, the design does not permit for full aileron travel unless you’re not sitting in the aircraft! If Anyone reading this has a different bellcr...

tom kreiner

Without looking at the plans which are out of my shop, I would have to say that the reason for this is because the forward part of the fuselage is sheathed with 1/8 inch plywood from firewall to the rear pit. Along with the sheathing, wedges provide additional joint strength needed in this area due ...

tom kreiner

FWIW — The use of a restrictor will not reduce the braking force, but it will slow down the rate at which the force is applied.

tom kreiner

Just listed an ad for an A-65 if you're looking.

Click on BPA, then go to Classifieds.

tom kreiner

<<<< REVISED 11/22/20 4pm Central >>>> I've got a Continental A-65 with 700 hours on it, ready to sell. This is a running Engine removed from a T''craft for an engine upgrade. Nicely equipped with a clean Stromberg Carb, and very LOW time Slick Mags, around 200 hrs. since installed. You won't find a...

tom kreiner

Andy, Does anyone in your chapter have a set of plans? On page 7 of mine, the wires from the Vertical Stab to the Horizontal have a common point at the Vertical, one going towards the leading edge, one going to the hinge edge of the Horizontal. Your plane, in contrast, has two unique wires, one towa...

tom kreiner

Oscar,

Have you thought of replacing the L shaped bracket that mounts the pedal with a U shaped bracket? There appears to be an eccentric load on the angled fuse member along with the bracket itself.

Tom

tom kreiner

Will, Lets do some simple math... In the case of a simple joint - perfectly fitted, the bond area of the two pieces would be the area of the end of a truss piece as it fits against the cap strip. For the Piet, both capstrip and truss piece are .25 x .50 inches, giving us a bond area of .125 sq. inch...

tom kreiner

Bob, Which cam does your C-90 have? The original cam was P/N 530788, and an engine equipped with it would have the best torque of any small Continental engine. Prior to assuming you need a 74x36, pitched prop, you might contact Douwe Blumberg, whose Piet Has a C-90 which climbs like a homesick angel...

tom kreiner

Bob, Which cam does your C-90 have? The original cam was P/N 530788, and an engine equipped with it would have the best torque of any small Continental engine. Prior to assuming you need a 74x36, pitched prop, you might contact Douwe Blumberg, whose Piet Has a C-90 which climbs like a homesick angel...

tom kreiner

At the cross bar, there’s a red adel clamp holding a cable attached to a mysterious gizmo.

Pray tell, what is the function of this device?

tom kreiner

The very first guys I met at Brodhead in '09 were from Minnesota's Chapter 25. I would like to count among them the late Dick Navratil - a superb gentleman - Bob Poore, and Greg Cardinal, and others, whose names are too many to recall. (We even have a couple of MN transplants here in TX) While we've...

tom kreiner

Take a close look at your tailwheel, as it adds the largest moment of any component due to arm length. Reducing weight at the tail is the best bet for changing cg. Below are a few suggestions. I had a 7 lb. Matco tailwheel given to me, and rather than using it, I am fabbing the twin tubing open fram...

tom kreiner

Now that AirVenture officially shut down for 2020, will there still be a small group flyin at Brodhead?

Please give all of us enough notice to adjust plans...

Thanks!

tom kreiner

Hopefully you have a plan to prevent the elevators from sliding back and forth, as the positioning of the hinges in the pic aren’t set up to eliminate lateral movement.

How about showing us a few more details?

tom kreiner

Some time ago, I purchased an O-200 engine "in a box." Literally, completely disassembled, cleaned - magnafluxed, zyglo'd - and neatly packed by the son of a deceased A&P who had saved the engine to build someday. The engine was carefully packed in a Gaylord container about 4' x 4' x 3...

tom kreiner

Have you considered the weight of the 1/8 cable & turnbuckles compared to 3/32? Since the tail of the Piet is notoriously heavy, any weight you can drop is rather large in the overall scheme of things. A few ounces here, a few ounces there, and all of a sudden you've dropped significant weight. ...

tom kreiner

Hey Guys - for those of you looking for a project engine - this one is it!~ C-85 in a box! Or maybe a few boxes... Aircraft Specialties has worked on C'shaft, reground it properly, and Divco has done their work on the C'case. Here's the link: https://chicago.craigslist.org/wcl/avo/d/geneva-continent...

tom kreiner

As has been mentioned on the list fairly often, spending the weekend in Brodhead, WI, prior to AirVenture, aka Oshkosh, is a great way to learn about the plane, maybe hop a ride, get to meet guys flying in, and spend time learning about the type. The Brodhead Pietenpol / Hatz Flyin is held in July a...

tom kreiner

On page two of the 1933 plans, it appears that the numbers are rather fuzzy in appearance.

That said, I believe that both the stab brackets and the rudder brackets are 13 ga.

tom kreiner

Well... like the Weeden’s, my first flight of the year wasn’t in a Piet, rather it was in an RV12. It was not only my first flight of the year, it was my first flight towards both the commercial rating and the CFIS! Since it was here in Conroe, The weather was CAVU, Blue skies 70° Still need that Ta...

tom kreiner

OK - my LAST POST of the year! A couple of days ago, I was at the field grabbing some stuff for my Piet project, and came across the Cub shown in the pic. It turns out the Exhaust pipe was miter cut (cut on diagonal) backwards, which caused a pretty significant problem. Cub Exhaust.jpg When the open...

tom kreiner

Sean, While you are free to build your plane with anything you prefer, you may, at some future time, decide to sell that craft, and build some other plane. When you go to sell the plane, the pool of buyers may be limited if you’ve used non aircraft materials. Answering your specific question about t...

tom kreiner

Oscar, Like you, I purchased Bill Rewey's tips & hints package... unlike you, however, I didn't hide mine... I pulled the package out, and found what I think you're looking for, although it's not for a handheld, but for a GPS. In my package there was no COM radio or handheld radio mount; just th...

tom kreiner

Full-size sheets, 4’ x 8’ which were then cut down for me into 2’ x 8’ for shipping. I Purchased two 1/16 inch sheets one 1/8 sheet and one 5/16 inch sheet to the best of my recollection. They were actually in metric sizes but the measurements I gave are pretty close.

tom kreiner

While I have not looked this year, a few years back I noted that after air venture every year two things happen; #1, EAA puts the four volume set of Tony Bingelis’s books on sale, and #2, Boulter Lumber puts their Okume plywood on sale. Both places used to have Sale ads inside the August & Septe...

tom kreiner

This can be reduced to a pretty simple example… Take the case of two strips at right angles, so that they form a Tee. Sand all of the surfaces and prepare them perfectly and then glue them with the finest glue you can you can identify. Now imagine that the stresses on that joint are such that the le...

tom kreiner

This can be reduced to a pretty simple example… Take the case of two strips at right angles., so that they form a TEE. Send all of the surfaces and prepare them perfectly and then glue them with the finest glue you can you can identify. Now imagine that the stress is on that joint are such that the ...

tom kreiner

Due to crazy circumstances.... My 26 ft, Camper is available at Camp Scholler this year, which includes Camping Fees, Placement of Camper, Propane, COLD A/C, running water, power, etc. Available on Wed. the 17th. till Sunday the 28th. This is not a new Camper, but it's in great shape, has a new Full...

tom kreiner

Guys, Even if you remove the engine and junk it — which I’m not implying, the airframe alone could be worth the asking price! Figure around $2000. For wood, $1500 for covering, $800 for paint, and around $500 just for turnbuckles, and that's just the structure. Add instruments, gas tank, seats, stic...

tom kreiner

Dan, I'd like to suggest you read up on the wheel topic by reviewing this link: http://www.westcoastpiet.com/wire_wheels.htm There's quite a bit of discussion on the WCP site about wheels from several guys, including Mike Cuy, whose plane is top notch. While it's a nice thought to use the spokes tha...

tom kreiner

Fabrice, If you're coming all this way from France... I'd like to suggest you consider coming early enough to visit the Pietenpol Gathering in Brodhead, Wisconsin. Brodhead is just a couple easy hours drive from Oshkosh. The Piet gathering is the 4 days immediately prior to AirVenture in OSH, and th...

tom kreiner

Brian, The torch I use is an older Victor Journeyman, i.e. Victor 100, which has been cloned by lots of other companies, and torch tips are readily available. Recently, however, I did not have a sufficiently small tip to prevent blow thru of the material, which happens with very thin gage metals. So...

tom kreiner

Forgot to mention...solder needs to be rosin core to adhere to brass, but not to steel drill.

tom kreiner

Another item regarding metal work, is to draw file edges and then sand smooth with emery cloth to eliminate ALL defects on edges of piece, as these, too, will create create crack propagation points.

This type of prep must be done prior to bending.

tom kreiner

Oops, The first drill to try should be a #54, , then stepping up in size to make main jet richer. After cooling, twist the drill with pliers, and pull out; this will leave a smooth orifice.

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