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Old Jun 01, 2010, 06:21 PM
Scratch Building Lives
voyager2lcats's Avatar
Columbia, SC
Joined Jul 2006
193 Posts
Build Log
Fairchild PT-19 Cornell

I started this plane last October(?), but here are pictures showing my progress. This plane is a composite of three different balsa plans: Pica, Sterling, and Gene Rogers. I used the Pica plans as the basis for the internal foam bracing (cross-sections and framework) of Dollar Tree foamboard. The foamboard also was the wingspar and the four airfoil formers inside the wings.
Take a look.
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Old Jun 01, 2010, 06:34 PM
Scratch Building Lives
voyager2lcats's Avatar
Columbia, SC
Joined Jul 2006
193 Posts
Covering the fuselage.

I used Dow Protection Board III which I bought a 50' fan fold bundle for $37 from Lowe's. I really like this stuff- it will roll with pressure along the grain without cracking unless you fold it too fast. If you get a 1/4" dowel and tape it to the back side of the foam you can use your heat gun on LOW to form a nice leading edge to your blue foam airfoil. Take a look.
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Old Jun 01, 2010, 11:38 PM
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Old Jun 02, 2010, 07:23 PM
Scratch Building Lives
voyager2lcats's Avatar
Columbia, SC
Joined Jul 2006
193 Posts
Here is some more.

A friend of mine really got me started on scratch building plastic cowls. My first three attempts with various types of plastics were unmitigated experimental disasters! But I remained undeterred (i.e. I am not a quitter). Using a wooden plug I used the Gene Rogers plans as the basis for a pine plug made from two cut sections of 2" x 4" boards and carved/sanded to shape. I shoved this into my son's sandbox and filled it with a plaster of paris mix which set for two hours and I used it to heat form a plastic cowl from an amber colored plastic (#1) 2 liter apple cider bottle. First one was okay, second, well you be the judge.
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Old Jun 02, 2010, 08:10 PM
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RogueTitan's Avatar
In Teh Garage (Rossville, GA. USA)
Joined Sep 2008
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Hey 2 Cats Cool Build!
did you put this up on Eriks site?
The cowl turned out good IMO
Thanks for posting the drawings!
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Old Jun 03, 2010, 01:58 PM
Scratch Building Lives
voyager2lcats's Avatar
Columbia, SC
Joined Jul 2006
193 Posts
Quote:
Originally Posted by RogueTitan View Post
Hey 2 Cats Cool Build!
did you put this up on Eriks site?
The cowl turned out good IMO
Thanks for posting the drawings!
Mike, thank you very much. I have not posted this build to Erik's site, but you can bet that I will. I also have tiled plans I scanned from the Sterling models "original". I will post them as well. Erik has a great site as I have already told him. Great models too.
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Old Jun 03, 2010, 07:44 PM
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In Teh Garage (Rossville, GA. USA)
Joined Sep 2008
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Cool Beans V2C
Ya tiled drawings is even mo bettah
and this build will be perfect to put up on Eriks forum seeing that it is a war bird and one of the first monoplane trainers.
Erik is definately an artist in foam war birds!

Hey Maybe we can talk Erik into hosting a workshop in his new forum for building that P 40
maybe if we poke at him about enough

Anyway Be sure to keep us updated with this build, she is taking shape very nicely.
and i will keep my eyes peeled for the thread at Eriks site too
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Old Jun 04, 2010, 07:09 PM
Scratch Building Lives
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Columbia, SC
Joined Jul 2006
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Tiled Sterling Plans

I scanned these from the Sterling PT-19 plans. I hope these come in handy for anyone who wants to try their hand at this model.
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Old Jun 06, 2010, 11:54 AM
Scratch Building Lives
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Columbia, SC
Joined Jul 2006
193 Posts
I am losing track of what I have posted on this plane, but I am behind on this particular thread, so I have more photos for everyone to enjoy.
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Old Jun 12, 2010, 04:24 PM
Groundlooping is an art!
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Norway
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How do you heat form your cowling...in the oven or with a heat gun?

Cheers,
Terje
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Last edited by SAPSPIT; Jun 12, 2010 at 06:23 PM.
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Old Jun 12, 2010, 05:08 PM
Scratch Building Lives
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Columbia, SC
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Quote:
Originally Posted by SAPSPIT View Post
Subscibed.

How do you heat form your cowling...in the oven or with a heat gun?

Cheers,
Terje
Hey Terje, I heat form my cowls. In this case I used the top and side views of the plans to make a pine wood plug which I sawed and sanded to shape. Then I made a sand mold (water poured into sandbox followed by pine plug pushed into sand) which I filled with plaster of paris. I recommend amber colored plastic (#1 PETE) 2 liter apple cider bottles. I am glad you like this thread. I saw someone else's thread where they had pictures of "Little Norway", a full scale PT-19 that is now in Norway. Beautiful plane.

Hope you are flying, Bob
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Old Jun 12, 2010, 06:21 PM
Groundlooping is an art!
SAPSPIT's Avatar
Norway
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Quote:
Originally Posted by voyager2lcats View Post
Hey Terje, I heat form my cowls. In this case I used the top and side views of the plans to make a pine wood plug which I sawed and sanded to shape. Then I made a sand mold (water poured into sandbox followed by pine plug pushed into sand) which I filled with plaster of paris. I recommend amber colored plastic (#1 PETE) 2 liter apple cider bottles. I am glad you like this thread. I saw someone else's thread where they had pictures of "Little Norway", a full scale PT-19 that is now in Norway. Beautiful plane.

Hope you are flying, Bob
Yes, I am flying

You can check out my build log on a Spit: http://www.rcgroups.com/forums/showthread.php?t=1235534

...however, do you put everything into the oven so the bottle melts into shape on top of the mould? ( I am familiar with the vacum metod)

The PT-19 named "Spirit of Little Norway" is stationed at Kjeller Airfield, 10 minutes away from where I live
I will follow your build log and see if I should give it a try. Love those light and scale speed flying depron planes.

Keep up the good work !

Cheers,
Terje
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Last edited by SAPSPIT; Jun 12, 2010 at 06:28 PM.
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Old Jun 13, 2010, 01:05 PM
Scratch Building Lives
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Columbia, SC
Joined Jul 2006
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Heat gun for heat forming cowls and canopies.

Terje,

I use a heat gun (intended for stripping paint) for heating the plastic cowls. Check this thread: http://www.wattflyer.com/forums/showthread.php?t=36104for ideas. Here is my post on a thread at WattFlyer with the same link above and some cowl tips: http://www.wattflyer.com/forums/show...5&postcount=16
Amazing! You live close to the "Spirit of Little Norway", that is the first set of pictures I have seen of it in its new paint job. That is beautiful.

Bob
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Old Jun 13, 2010, 03:45 PM
Groundlooping is an art!
SAPSPIT's Avatar
Norway
Joined Jul 2009
896 Posts
Quote:
Originally Posted by voyager2lcats View Post
Terje,

I use a heat gun Amazing! You live close to the "Spirit of Little Norway", that is the first set of pictures I have seen of it in its new paint job. That is beautiful.

Bob
Thanks a lot for the tip Will try it out shortly

Terje
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Old Jun 15, 2010, 03:49 PM
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United States, OH, Westlake
Joined Mar 2002
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She's looking good. I love the idea of 'borrowing' the sandbox. Glad you have kids and not a cat....
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