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-   -   DCPM Pfalz XII project (http://www.Wattflyer.com/forums/showthread.php?t=74064)

Griff Murphey 07-11-2014 07:09 PM

DCPM Pfalz XII project
Hello, I am building DPCM's 16" span Pfalz D-XII and presently have it framed up almost ready to cover. I am planning on covering with hex tissue I will print myself. Radio and power will be Flyzone micro guts from Tower hobbies, 3 ch. no aelierons.

I plan on painting mine like the one in the Australian War Memorial museum. There are a couple of others around particularly the ones at Seattle and the Musee d'Le Air. Looks like they all have light gull gray struts. Is this correct? I would have thought varnished wood.

Another question, should I try to match the patterns up on the aelierons with the wings as far as the hex camo is concerned or were they covered independently and supposed to NOT match?

Thanks for input!

Ok I got a reply from a friend who is a WW-1 researcher - he found a photo, a closeup; the struts look very metal, are held on with bolt type fittings. The photo is WW-1 and the struts are a very dark color, look black.

Griff Murphey 07-28-2014 03:38 AM

Some photos
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Just installed the motor. The wing root area was supposed to be managed with ribs and formers, but I felt it would be too fragile, impossible to sheet up... so I carved it out of 1/4" balsa sheet, and hollowed the interior as much as possible. I felt the landing gear needed more support as well, by the original plan, the gear legs would simply be glued to the tissue or ribs. The landing gear will have plenty of wood to support it. One of my big lessons from flying the foam Flyzone biplanes is that the lower wings take most of the hits.

This also allowed me to recreate the slight indention of the wing root on its undersurface. The D-XII has a really interesting underbelly contour.

The Flyzone micro motor is mounted on 1/4x16" fitted basswood strips, laminated so as to form a 1/4" square right through the gearbox. I've used this on three other models, and it works great.

The cowling is easily removed for battery changes and engine repairs or changeouts. It's held on with micro magnets.

Dave Cowell of DCPM told me that this is a reissue of an original Deils kit from 1948, which may account for some of the interpretive demands on the builder.

Griff Murphey 07-28-2014 03:48 AM

Wing root
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Here is the wing root. The lower wing was strengthened with a third spar. All spars are basswood, so the three spars are engaged in the balsa wing root. I might pad them with a little silicon sealer. The photo shows the wing about it be slid into place for a test fit.

There will be a little weight penalty but I think the the strength added to the center section supporting the lower wings and landing gear will be worth it.

Dave Cowell of DCPM was kind enough to give me an extra sheet of wing ribs so I was able to replace the half ribs with full ribs, which I felt would be better support for the strut receptacles.

Griff Murphey 07-28-2014 03:50 AM

The airframe
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Here's the pile of structure awaiting covering. The strut mounting plates are supported on both sides by good strong ribs, thanks to Dave.

Griff Murphey 08-27-2014 04:12 AM

Painting and about to begin assembly
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Painting coming along well. I copied the one Planes of Fame has. Final assembly next.

Griff Murphey 09-04-2014 04:31 AM

Installing control horns
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Use of a "gust lock" type stabilizer holds control surfaces in neutral while control horns are ACC'd to control surfaces. Control horns are Flyzone long N-17 type, cut off flat and sanded. Control surfaces are reinforced with basswood where they will glued; ACC penetrates the tissue and grabs the underlying wood. These are quite strong.

7car7 09-04-2014 05:22 PM

Looking real good there. Nicely done.

Griff Murphey 09-14-2014 06:40 PM

Der Pfalz is Pfinished!
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Here she is.

Griff Murphey 09-14-2014 06:41 PM

Aft view
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Aft view

Griff Murphey 09-14-2014 06:49 PM

Mein pilot Ltn Ritter Von Griffinstein
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He was so eager he jumped into the cockpit in his field gray tunic with cavalry slash - no warm coat. He is presently in the officers mess tossing down a few with Willy after a harrowing few flights this A.M. The plane wants a little more down elevator trim.

The Leutnant has had his nose and beard built up with white glue. After painting I thought he looked still way too cherubic and crushed in his cheeks with the butt of a paintbrush to give him arrogant Teutonic cheekbones.

The MGs are Flyzone Spandaus from Tower Hobbies. All guts are Flyzone. Exhaust manifolds are home made resin castings, engine is balsa. A larger prop than the Flyzone is fitted. I can get the nomenclature on that if anyone is interested.

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