Thread Tools
Sep 17, 2021, 12:07 PM
Registered User
Thread OP
Discussion

All foam Pietenpol Air Camper


Wendell Hostetler all foam Pietenpol Air Camper

This all foam plane will be powered by
Motor depending on weight and how tail heavy Leopard LC6362 or LC8072
https://www.altitudehobbies.com/collections/63mm-series
https://www.altitudehobbies.com/collections/80mm-series

(2) 6S-6200 packs in series 12S

ZTW ESC https://www.altitudehobbies.com/coll...sc-opto-no-bec

Castle Creation Pro BEC

Not my 1st large all foam plane Martin MARS https://www.rcgroups.com/forums/show...am-Martin-Mars

Started on the wing, using 3" x 24" x 48" 1# white foam from Foam Factory https://www.foambymail.com/polystyrene-foam.html
Fuse will use 5" x 24" x 48" 1# white foam from Foam Factory.

Center wing section will be covered with paper backed maple veneer, .020" thick same weight as medium 1/16" balsa. You can see center section in posted PICs

Outer wing panels will be covered in paper backed cherry veneer, .020" thick same weight as medium 1/16" balsa.
https://www.homedepot.com/p/EDGEMATE...1057/206790239
https://www.homedepot.com/p/EDGEMATE...1034/206942940
The fuse and tail feathers will also be covered in the above veneer.
All will be glued on with brown Polyurethane glue (Gorilla)
As of right now finish will be Minwax Pre-stain, natural stain and (2) coats of satin polyurethane (or I may use Gorilla glue as my final coats)
https://www.bing.com/videos/search?q...tail&FORM=VIRE

Wing tube is 1 1/2" x 36" from Ziroli https://ziroligiantscaleplans.com/bu...leeve-set.html
Outer wing panels will have 1/8" x 1 1/2" x 24" lite ply spar (not sure this is needed)

Some PICs, it will be different not your standard Pietenpol.

Thinking about using dummy radial engine from Park Flyer Plastics to hide the motor and Robart 1/3 scale cub landing gear.
https://parkflyerplastics.com/cart/i...roducts_id=312
https://robart.com/collections/robos...b-landing-gear

Tony
Last edited by cornj; Sep 17, 2021 at 03:26 PM.
Sign up now
to remove ads between posts
Sep 20, 2021, 03:28 PM
Registered User
Thread OP
WOW that's a big wing

Installed outboard 1/8" x 1 3/8" x 24" lite ply spars.

Tony
Sep 23, 2021, 05:04 PM
Registered User
I'm signed on for sure. I love your builds.

I was gifted a set of these plans from a good friend.
Sep 23, 2021, 05:46 PM
Registered User
Thread OP
Thanks
Tony
Oct 14, 2021, 03:28 PM
Dont forget the velcro straps
corsair nut's Avatar
very cool build method! watching!
Oct 14, 2021, 03:48 PM
Registered User
Thread OP
Thanks

Tony
Oct 21, 2021, 08:35 AM
Registered User
Thread OP
Update
One pic shows pins I use, get them at the fabric store, needles with plastic heads, very sharp work great, best pin I've ever used.

Hinging, because I work with foam I glue the Robart hinge points with brown PU glue and 5min epoxy. The epoxy sets up fast and is used to seal off the hinge area from the PU glue works very good. I use the tang (handle end) of a file to replicate tampered hinge point. I put PU glue in hole and put epoxy on the tampered part of hinge point so when I slide in the hinge point the epoxy seals the hole not allowing the PU glue to get to hinge.

Installing 1/2" dowel in stabs for bracing wire.

Tony
Oct 21, 2021, 11:35 PM
Registered User
Looking good. Good thinking on the PU and epoxy method.
Oct 22, 2021, 12:04 PM
San Antonio TX.
sensei's Avatar
You know gentlemen, this process has been used for the last 3 decades I know of, and maybe even a little longer. 1/16 medium density balsa skins have generally been used over use of veneers due to the lighter weight quality of the balsa.

Gorilla glue is definitely one way to bond skins, but the use of a good quality slow curing epoxy resin along with vacuum bagging is much more desirable due to its lighter and stronger nature.

Here is a pictures of my giant scale wings, held by my flying buddy and friend, built as I have explained. George is 6’2”.

Bob
Oct 22, 2021, 06:15 PM
Registered User
Thread OP
Bob that’s one big wing, sure your not building one you can fly in.

Yes I agree, best way to attach the skins is with a vacuum bagging system. I decided a few years ago that it wasn’t worth the effort to me to make or buy a bagging system, I would only use it once or twice a year.
As far as weight, when I skinned with 1/16” balsa I used medium weight balsa only feeling that it was more durable over 3# contest grade and less expensive. I took a piece of 1/16" medium weight balsa measuring 3” x 9” and a piece of oak .020” veneer 3" x 9" and both weighed the same 6 grams.

The lightest covering I’ve used is contractor paper (used to protect floors or counter tops during construction), this works pretty good and costs very little.

Good luck with your project
Tony
Last edited by cornj; Oct 23, 2021 at 06:53 AM.
Oct 23, 2021, 06:55 AM
Registered User
Thread OP
Aileron mounting plate will be 1/16" G10

Lots and lots of sanding next to finish the wing

Tony
Oct 23, 2021, 07:23 AM
San Antonio TX.
sensei's Avatar
Quote:
Originally Posted by cornj
Bob that’s one big wing, sure your not building one you can fly in.

Yes I agree, best way to attach the skins is with a vacuum bagging system. I decided a few years ago that it wasn’t worth the effort to me to make or buy a bagging system, I would only use it once or twice a year.
As far as weight, when I skinned with 1/16” balsa I used medium weight balsa only feeling that it was more durable over 3# contest grade and less expensive. I took a piece of 1/16" medium weight balsa measuring 3” x 9” and a piece of oak .020” veneer 3" x 9" and both weighed the same 6 grams.

The lightest covering I’ve used is contractor paper (used to protect floors or counter tops during construction), this works pretty good and costs very little.

Good luck with your project
Tony
Best of luck on your project as well,

Bob
Oct 23, 2021, 07:28 AM
Registered User
Thread OP
This plane is covered with brown/red contractors paper, wings and stabs, DO335

PICs of paper covered floats, now when I cover with paper I attach with brown PU-glue. After glue is dry the paper looks to have a rash, I then apply a coat of PU-glue directly to the paper surface much like applying a coat of stain, rub it in until until rash look is gone, one solid color.

Can also use brown PU-glue as final finish/sealer, rub it in like stain.

Tony
Last edited by cornj; Oct 23, 2021 at 07:36 AM.
Oct 30, 2021, 12:19 AM
Gavin
Flyitall's Avatar
I love your work cornj. Beautiful craftsmanship.

The paper covering is something new to me, and worth exploring.

I built my first balsa sheeted foam wing in 1971. I used a latex contact adhesive to bond the skins to the foam. Later in 1971 I made another wing using obechi veneer onto foam. It was a popular construction method at the time.

Following your build with much interest now.


Quick Reply
Message:

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Build Log 58" Pietenpol Air Camper Peter Rake Build Off flyerdave Scale Kit/Scratch Built 158 Oct 20, 2021 06:24 PM
Video Pietenpol Air Camper V2 RED with ASP 5cc Four stroke engine Maiden Flight robertmax Scale Fuel Planes 7 Jul 08, 2018 12:29 PM
Discussion Pietenpol Air Camper @ 48" P. Tritle Scale Kit/Scratch Built 29 Jan 31, 2018 08:20 PM
Video Pietenpol Air Camper V2 with ASP 5cc Four stroke engine PreFlight START robertmax Scale Fuel Planes 2 Jan 09, 2018 10:01 AM