Search found 56 matches

by tom kreiner
Sat Jan 16, 2021 9:49 pm
Forum: Pietenpol Builders Forum
Topic: Spar Wedges
Replies: 3
Views: 43

Re: Spar Wedges

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 ...
by tom kreiner
Thu Jan 14, 2021 11:21 am
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

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.
by tom kreiner
Sun Nov 22, 2020 1:34 pm
Forum: Pietenpol Builders Forum
Topic: A-65 Just listed in BPA Classifieds
Replies: 0
Views: 351

A-65 Just listed in BPA Classifieds

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

Click on BPA, then go to Classifieds.
by tom kreiner
Sun Nov 22, 2020 1:32 pm
Forum: Classified Ads
Topic: Mid-time Continental A-65 for sale
Replies: 0
Views: 376

Mid-time Continental A-65 for sale

<<<< 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...
by tom kreiner
Wed Nov 04, 2020 7:36 pm
Forum: Pietenpol Builders Forum
Topic: Vertical Stabilizer flutter
Replies: 14
Views: 649

Re: Vertical Stabilizer flutter

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...
by tom kreiner
Mon Oct 05, 2020 1:55 pm
Forum: Pietenpol Builders Forum
Topic: Brake master cylinder mountings
Replies: 28
Views: 1676

Re: Brake master cylinder mountings

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
by tom kreiner
Wed Aug 19, 2020 3:54 pm
Forum: Pietenpol Builders Forum
Topic: Basic woodworking question
Replies: 2
Views: 731

Re: Basic woodworking question

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...
by tom kreiner
Sun Aug 02, 2020 5:14 pm
Forum: Classified Ads
Topic: WTB Climb Prop
Replies: 8
Views: 1482

Re: WTB Climb Prop

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...
by tom kreiner
Sun Aug 02, 2020 5:13 pm
Forum: Classified Ads
Topic: WTB Climb Prop
Replies: 8
Views: 1482

Re: WTB Climb Prop

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...
by tom kreiner
Fri Jun 05, 2020 6:57 am
Forum: Pietenpol Builders Forum
Topic: N34KP
Replies: 21
Views: 2996

Re: N34KP

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?
by tom kreiner
Sun May 31, 2020 9:12 pm
Forum: Pietenpol Builders Forum
Topic: To our friends at Chapter 25 in MN
Replies: 2
Views: 633

To our friends at Chapter 25 in MN

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...
by tom kreiner
Sat May 09, 2020 6:58 pm
Forum: Pietenpol Builders Forum
Topic: fuselage length
Replies: 7
Views: 1305

Re: fuselage length

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...
by tom kreiner
Fri May 01, 2020 9:17 am
Forum: Pietenpol Builders Forum
Topic: Question about Hatz & Piet gathering
Replies: 1
Views: 739

Question about Hatz & Piet gathering

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!
by tom kreiner
Wed Apr 22, 2020 7:56 am
Forum: Pietenpol Builders Forum
Topic: Eye bolts for hinges
Replies: 5
Views: 1124

Re: Eye bolts for hinges

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?
by tom kreiner
Mon Apr 20, 2020 1:15 pm
Forum: Pietenpol Builders Forum
Topic: Maybe how an O-200 failed?
Replies: 1
Views: 734

Maybe how an O-200 failed?

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...
by tom kreiner
Tue Mar 31, 2020 1:44 pm
Forum: Pietenpol Builders Forum
Topic: stabilizer turnbuckle
Replies: 3
Views: 961

Re: stabilizer turnbuckle

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. ...
by tom kreiner
Thu Mar 19, 2020 7:09 am
Forum: Pietenpol Builders Forum
Topic: C-85 engine
Replies: 0
Views: 1210

C-85 engine

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...
by tom kreiner
Sun Mar 01, 2020 2:45 pm
Forum: Pietenpol Builders Forum
Topic: New Member from St. Louis Missouri
Replies: 4
Views: 965

Re: New Member from St. Louis Missouri

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...
by tom kreiner
Sun Jan 19, 2020 7:51 am
Forum: Pietenpol Builders Forum
Topic: Control Horns
Replies: 9
Views: 1496

Re: Control Horns

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.
by tom kreiner
Wed Jan 08, 2020 8:50 pm
Forum: Pietenpol Builders Forum
Topic: First flight of 2020
Replies: 6
Views: 1392

Re: First flight of 2020

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...
by tom kreiner
Mon Dec 30, 2019 5:14 pm
Forum: Pietenpol Builders Forum
Topic: Small Detail to consider
Replies: 2
Views: 873

Small Detail to consider

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...
by tom kreiner
Sat Sep 28, 2019 7:08 am
Forum: Pietenpol Builders Forum
Topic: 4130 vs 1020
Replies: 10
Views: 3033

Re: 4130 vs 1020

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...
by tom kreiner
Wed Sep 25, 2019 2:40 pm
Forum: Pietenpol Builders Forum
Topic: Bill Rewey
Replies: 14
Views: 4841

Re: Bill Rewey

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...
by tom kreiner
Sat Aug 10, 2019 9:48 am
Forum: Pietenpol Builders Forum
Topic: Fuselage gussets
Replies: 6
Views: 1944

Re: Fuselage gussets

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.
by tom kreiner
Fri Aug 09, 2019 3:26 pm
Forum: Pietenpol Builders Forum
Topic: Fuselage gussets
Replies: 6
Views: 1944

Re: Fuselage gussets

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...
by tom kreiner
Sun Jul 14, 2019 1:06 pm
Forum: Pietenpol Builders Forum
Topic: Rib cuts
Replies: 7
Views: 1979

Re: Rib cuts

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...
by tom kreiner
Sun Jul 14, 2019 12:58 pm
Forum: Pietenpol Builders Forum
Topic: Rib cuts
Replies: 7
Views: 1979

Re: Rib cuts

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 ...
by tom kreiner
Fri Jul 12, 2019 8:11 am
Forum: Pietenpol Builders Forum
Topic: Camper for EAA AirVenture
Replies: 0
Views: 2087

Camper for EAA AirVenture

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...
by tom kreiner
Fri Jun 14, 2019 10:48 am
Forum: Pietenpol Builders Forum
Topic: New here, with question
Replies: 10
Views: 3806

Re: New here, with question

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...
by tom kreiner
Tue Apr 16, 2019 5:12 pm
Forum: Pietenpol Builders Forum
Topic: Cheap Wheels
Replies: 6
Views: 2335

Re: Cheap Wheels

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...
by tom kreiner
Tue Apr 16, 2019 8:27 am
Forum: Pietenpol Builders Forum
Topic: Any Piet builders in Colorado
Replies: 9
Views: 2708

Re: Any Piet builders in Colorado

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...
by tom kreiner
Fri Feb 01, 2019 1:49 pm
Forum: Pietenpol Builders Forum
Topic: forming control horns
Replies: 8
Views: 2649

Re: forming control horns

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...
by tom kreiner
Sun Jan 20, 2019 4:35 pm
Forum: Pietenpol Builders Forum
Topic: Stromberg richness
Replies: 8
Views: 2399

Re: Stromberg richness

Forgot to mention...solder needs to be rosin core to adhere to brass, but not to steel drill.
by tom kreiner
Sun Jan 20, 2019 1:13 pm
Forum: Pietenpol Builders Forum
Topic: Fittings: annealing, bending, hardening?
Replies: 3
Views: 1663

Re: Fittings: annealing, bending, hardening?

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.
by tom kreiner
Sun Jan 20, 2019 1:07 pm
Forum: Pietenpol Builders Forum
Topic: Stromberg richness
Replies: 8
Views: 2399

Re: Stromberg richness

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.
by tom kreiner
Sun Jan 20, 2019 1:01 pm
Forum: Pietenpol Builders Forum
Topic: Stromberg richness
Replies: 8
Views: 2399

Re: Stromberg richness

Guys, Oscar has outlined some very good info in his posts, and I'm adding just a few additional notes. As stated, the Stromberg carb is typically wired in the full rich position, and according to a few old timers, that’s because the Aircraft Sales guys never thought anyone would fly above 5000 ft, a...
by tom kreiner
Sat Dec 22, 2018 5:01 pm
Forum: Pietenpol Builders Forum
Topic: Fueslage Modifications For Diffrent Engines.
Replies: 15
Views: 4778

Re: Fueslage Modifications For Diffrent Engines.

Ture Kane, Since we haven't seen any posts from you, it would be nice to have you follow up with some news about who you are, where you are, etc., so guy nearby your location can invite you to take a look at their Piets... After reading your post, and researching the Verner 5si, it appears that you ...
by tom kreiner
Tue Nov 27, 2018 12:58 pm
Forum: Pietenpol Builders Forum
Topic: Waterjetting
Replies: 13
Views: 4011

Re: Waterjetting

Bill, et al, Sorry it has taken so long to put this together, as I've been on two trips and gone thru a total hip replacement since the last time I was able to post... In response to your comments regarding the bend radius shown on the prints I uploaded previously, please note that these were hastil...
by tom kreiner
Tue Oct 30, 2018 8:03 am
Forum: Pietenpol Builders Forum
Topic: Waterjetting
Replies: 13
Views: 4011

Re: Waterjetting

Arthur, You're right; waterjetting is one of the most expensive metal removal techniques known... which is why Ken Perkins took the Waterjet 101 class multiple times. The caveat with plasma, is that the edges, and some additional area ( splay) will have something called "plasma slag." Remo...
by tom kreiner
Mon Oct 29, 2018 9:10 pm
Forum: Pietenpol Builders Forum
Topic: Waterjetting
Replies: 13
Views: 4011

Re: Waterjetting

A few years ago, I "captured" all of the Pietenpol sheet metal pieces, including simple pieces, and welded brackets using SolidWorks. After all of the Solid models were completed, I took them to a shop I've dealt with in the past, and they made a complete set of Piet metal pieces to prove ...
by tom kreiner
Mon Jun 25, 2018 6:20 pm
Forum: Pietenpol Builders Forum
Topic: Continental Rod Bolts A, C, O Series Engines
Replies: 0
Views: 2887

Continental Rod Bolts A, C, O Series Engines

If you're rebuilding your A-65 thru IO-240 or 360, and you're going to spend some $2500+ for new parts, I'll bet you want to build it right. So, let's do a little math... Engine life of 2000 hrs. x 2100 rpm (avg.) x 60 min. per hour = 252 MILLION stress cycles! Along with Connecting Rods, these are ...
by tom kreiner
Thu Jun 14, 2018 3:48 pm
Forum: Pietenpol Builders Forum
Topic: Certified Continental O-200 for sale
Replies: 0
Views: 3013

Certified Continental O-200 for sale

This o-200 has just been removed from a C-150 that is either being dismantled, or completely rebuilt - not exactly sure. While it is a running engine, it is being sold as a Core. REVISED ON 6/15: The engine is complete with the pull type Starter, as seen in the pics. A Core Marvel Schebler MA3SPA wi...
by tom kreiner
Fri Feb 09, 2018 6:38 pm
Forum: Pietenpol Builders Forum
Topic: CNC Pietenpol Ribs & More
Replies: 9
Views: 3453

Re: CNC Pietenpol Ribs & More

I'll try to address your questions one by one. Construction of a traditional wooden rib is done by first steaming & then bending the upper & lower cap strips to the shape of the airfoil. After these are made, they are connected together (glued with epoxy) using truss pieces - kinda like an o...
by tom kreiner
Fri Feb 09, 2018 2:54 pm
Forum: Pietenpol Builders Forum
Topic: CNC Pietenpol Ribs & More
Replies: 9
Views: 3453

Re: CNC Pietenpol Ribs & More

While you can do anything you like, both $$ and time permitting, producing NC'd ribs is much more involved than you might imagine. First, you'll need a digitized Rib, probably taken from a Rib Drawing, but there are many issues with that, as the ribs to be routed will have nearly totally different m...
by tom kreiner
Wed Jan 17, 2018 5:36 pm
Forum: Pietenpol Builders Forum
Topic: Corrosion Treating the Inside of the Cabanes and Diagonals
Replies: 4
Views: 2384

Re: Corrosion Treating the Inside of the Cabanes and Diagonals

Terry, The recommended way to address internal corrosion of the tubing is to make sure the ends are sealed, after which small holes will be drilled. Near boiling hot Linseed oil is then pumped into the chamber within, and is "sloshed" throughout. The holes are subsequently plugged with sma...
by tom kreiner
Mon Jan 15, 2018 11:48 am
Forum: Pietenpol Builders Forum
Topic: Pietenpol vertical wing strut support.
Replies: 12
Views: 4758

Re: Pietenpol vertical wing strut support.

Without seeing a picture, you've described what sounds like Jury Struts. These are rather small diameter tubes - or maybe oval tubes - which prevent both buckling and vibration of the main lift struts. While Jury Struts aren't mandatory, they're highly recommended, and should probably be added to yo...
by tom kreiner
Sat Dec 02, 2017 1:59 pm
Forum: Pietenpol Builders Forum
Topic: Pietenpol flying club
Replies: 2
Views: 1725

Re: Pietenpol flying club

Steve,

The article was appeared in the August 2016 edition of Sport Aviation, and it was about the Toledo, OH Buzzards.

I think you can look it up online...

TK
by tom kreiner
Mon Nov 13, 2017 10:12 am
Forum: Pietenpol Builders Forum
Topic: nifty nicopress trick
Replies: 3
Views: 1878

Re: nifty nicopress trick

Interesting that you should bring this up, Oscar! I've recently made drawings of an Acme thread clamp system - derived from a 1930's tool - to hold the cable, sleeve and thimble in a vise whilst crimping... My intention is to either provide drawings, or completed tools for sale to the homebuilt airc...
by tom kreiner
Wed Sep 20, 2017 9:24 am
Forum: Pietenpol Builders Forum
Topic: Riblet's Airfoil Design layout
Replies: 10
Views: 5144

Re: Riblet's Airfoil Design layout

While P.F. Beck's & Don Harpers planes are VERY similar, they are NOT identical. The reality is that Don's fuselage has roughly 10% greater flat plate drag than P.F.'s which, as I mentioned a few years back, is HUGE. ( If this isn't believable, go back and review the fuselage dimensions; then ca...
by tom kreiner
Tue Sep 19, 2017 8:52 am
Forum: Pietenpol Builders Forum
Topic: Riblet's Airfoil Design layout
Replies: 10
Views: 5144

Re: Riblet's Airfoil Design layout

Airfoils are graphically described in percentages of Mean Aerodynamic Chord, or simply Chord. With such a description, the stations ( X-axis) range from zero - generally the nose of the airfoil - to 100 - the trailing edge. The ordinates (Y-axis), are also in percentage of chord. Some airfoils have ...