Toronto Electric Model Aviation Club Forum

Toronto Electric Model Aviation Club (TEMAC) => Building / Construction => Topic started by: Michael on March 21, 2020, 05:40:31 pm

Title: Dumas Pietenpol - another project
Post by: Michael on March 21, 2020, 05:40:31 pm
I enjoyed building the Alien Aircraft Dragon 42, so I decided to build more balsa planes to keep me busy while I'm sitting at home.

My new project is the Dumas Pietenpol; a lightweight small (36" wingspan) scale model.

Details here:
https://www.greathobbies.com/productinfo/?prod_id=DUM1803

I've been working on this for about 6 days now; a few hours each day. This is not a beginner's kit, but with patience, most can build one. It's just that it's so light and there are so many delicate and thin parts, that I've damaged and repaired work at least 20 times since beginning construction. That's OK, since I want to take as much time as possible. It is fun for me.

Anyway, I'm almost finished basic construction. I am customizing as I progress, and am not following the instruction manual in order, but I'm pretty sure I know what I'm doing.

Some of the work is tedious and slow, but that's the point. Take a look at the thread-wrapped landing gear struts. Working and gluing just a bit at a time, that took a few hours.

Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 22, 2020, 02:39:16 pm
More work on wing struts, landing gear and wheels (built and sanded). Several hours of work.

Total 2.4 ounces / 69 grams weight so far.
Title: Re: Dumas Pietenpol - another project
Post by: davidk on March 22, 2020, 04:52:41 pm
Such a pretty plane.  I love the balsa wheels.
Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 24, 2020, 06:37:43 pm
I am really working slowly on this, to help pass the time, and to stretch out my enjoyment.

I spent several hours yesterday and today: installing the servos and control hardware, sheeting the fuselage top with balsa wood instead of the supplied card stock, making a hatch at the front-top fuselage, and building a dummy engine and radiator.

Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 25, 2020, 05:18:12 pm
Engine and radiator painted, dash boards fashioned and printed, and covering started.
Title: Re: Dumas Pietenpol - another project
Post by: Frank v B on March 25, 2020, 06:54:07 pm
Michael,

The details are amazing.

Frank
Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 25, 2020, 09:52:26 pm
Thanks, Frank.

More covering, slow and steady.

I'm applying coloured tissue, using a glue stick onto the balsa. When dry, water is gently applied, and the tissue dries nearly drum tight. When fully dry again, I gently brush on a coat of white glue / water, approx. 50-50 mix, as a sealer and protective coating. This also simulates a textured surface.
Title: Re: Dumas Pietenpol - another project
Post by: Frank v B on March 25, 2020, 10:12:45 pm
Michael,

Have you decided on the power system?

Frank
Title: Re: Dumas Pietenpol - another project
Post by: sihinch on March 26, 2020, 08:13:42 am
Michael,

Have you decided on the power system?

Frank

Yes.  Electric!  ;D ;D ;D ;D
Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 26, 2020, 10:27:42 am
Flite Test 1800 motor. It's bigger than an E-Flite 180 but smaller than a 300. It can handle 2 to 3 lipo cells.

It does not come with a prop adapter (prop sits right on the motor) and there is no motor mount. I made minor changes to the front of the fuselage to suit.

Title: Re: Dumas Pietenpol - another project
Post by: Frank v B on March 26, 2020, 11:06:07 am
Simon,

re  "Yes.  Electric!  ;D ;D ;D ;D"

I guess I asked for that one. :) 
Now get back to work baking my cookies. ;)

Frank
Title: Re: Dumas Pietenpol - another project
Post by: piker on March 26, 2020, 04:57:31 pm
Hey Michael,

Cool subject!

Do you remember the Pietenpol at the York airport where we had our fun fly for a few years?  The first year, some of the local full size owners took a bunch of us for flights around the patch.  I got to go up in the Pietenpol and it was AWESOME!  Leather helmet, goggles, tube (or was it wood) and fabric construction, and a dinky open motor out the front.  The fuselage was no more than my shoulder width, and when I looked over the side there was nothing between me and the ground, far below, besides a spoke wheel and bungee suspension.  It was SO cool.  It was like a motorbike with wings.  Small and open.

Then Glenn went up and during his flight one of the magneto's quit, so the plane had to be grounded for the evening. 
Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 27, 2020, 04:56:56 pm
Covering and painting continues.

Title: Re: Dumas Pietenpol - another project
Post by: bweaver on March 27, 2020, 05:09:27 pm
Fantastic Michael! 

(See how it is done Frank?)  ;D
Title: Re: Dumas Pietenpol - another project
Post by: Frank v B on March 27, 2020, 05:23:29 pm
Bruce,

re: "See how it is done Frank?"

That's why Michael is the president and you and I are not. :D

Frank

ps: looking great Michael.
Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 27, 2020, 07:50:14 pm
That's not why I'm president.
Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 27, 2020, 07:52:07 pm
Motor installed; customized and painted cowl tack-glued on; dummy engine glued onto removal front-fuselage-top.

The wing is currently being covered.

Title: Re: Dumas Pietenpol - another project
Post by: sihinch on March 27, 2020, 09:06:11 pm
Looks amazing Michael
Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 28, 2020, 05:44:45 pm
Wing is done, rear flying surfaces hinged and installed, pushrods and horns installed, wheels installed, dummy engine glued on, and the whole assembled. Speed control and receiver loose inside for now.

I still need to make a battery tray and a hatch (on the bottom.

Total weight approx. 173 grams / 6.2 ounces, without the  battery.

Unfortunately, the motor isn't turning properly (timing issue? fast, then slow, and screeches). I don't know how to fix that.

Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 28, 2020, 05:45:59 pm
Details still to do:

Pilot, windscreens, and decals.
Title: Re: Dumas Pietenpol - another project
Post by: Michael on March 31, 2020, 12:30:18 pm
Finished. I'm not doing decals.

Windshields done, pilot carved, painted and installed (his face is really ugly, so his name is Captain Pike), and weights in the nose for balance.

Total weight 230 grams - 8 ounces, ready to fly with battery.

Title: Re: Dumas Pietenpol - another project
Post by: Frank v B on March 31, 2020, 12:39:38 pm
Michael,

Neat!

I love the radiator.  It serves as a radiator, windshield, instrument rating test hood and dive brake.  The Swiss Army knife of airplane accessories. ;)

Both of us are going to be looking for a wind-free day.

Frank
Title: Re: Dumas Pietenpol - another project
Post by: davidk on March 31, 2020, 12:45:41 pm
Beautiful, I love the detail.
Title: Re: Dumas Pietenpol - another project
Post by: bweaver on March 31, 2020, 12:58:28 pm
Michael,

Neat!

I love the radiator.  It serves as a radiator, windshield, instrument rating test hood and dive brake.  The Swiss Army knife of airplane accessories. ;)

Both of us are going to be looking for a wind-free day.    Stay away from the beans.  ;D

Frank

Michael,

Definitely a Master Build!  Well done...