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Old Aug 28, 2006, 12:11 PM
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Grass Valley California
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Pitts Python from foam to balsa

Ultimately you may have guessed that I have a love affair with biplanes, but since the ultimate has or will be done
( hurry up Setevens Aero) I decided to do a Python.

Tim Hart AKA foamy factory started a thread on his foamy Python and I copied the full scale 3views to make a prototype Lengthend the fuse and enlarged stab and rudder,for #1 and then movaed the wing and stab for #2 to help with C.G. and flying, the foamy flew so well that I decided to start a balsa model

36'' wing spand and 475 sq''

http://www.rcgroups.com/forums/showt...=8#post5978537

Here are the foamys, and a link to Tim's foamy thread

Dennis
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Old Aug 28, 2006, 12:12 PM
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link?
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Old Aug 28, 2006, 12:15 PM
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Sorry Had to go back and find it

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Old Aug 28, 2006, 12:32 PM
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the flight and landing loads will be carried by an inner box, balsa stringer reinforced with carbon fiber

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Old Aug 28, 2006, 12:40 PM
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the cowel is big, 5'' diameter. the cowel rings are 1/8 light ply, I used depron to hold everything square while the balsa stringers were attached. it is covered with 1/32 balsa and will get a covering of light glass cloth attached with polyurethane. after glassing the cowell will be split in half to provide acces for battery instalation

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Old Aug 28, 2006, 12:43 PM
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sweet!
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Old Aug 28, 2006, 12:45 PM
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the nose of the cowel is 1 1/2'' sq light!! balsa. I attached it to a plywood ring and used a drill press to turn and sand it to shape, it weighs .7 oz

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Old Aug 28, 2006, 01:00 PM
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rudder and elevator curved shapes are made up of 4 layers of 1/16x3/8'' balsa laminated into bow. I used depron foam to make the form and hot! water to soften the balsa to prevent splitting, heald in place with rubber bands untill dry. glued with thin Ca.

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Old Aug 28, 2006, 01:04 PM
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finished cowel

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Old Aug 28, 2006, 01:10 PM
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formers are set on the outside of the fuselage box to creat the finale shape of the fuselage. 1/8''sq stringers as longerons. the frount of the fuselage and turtle deck will be covered with 1/32'' balsa
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Old Aug 28, 2006, 01:14 PM
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on the wheels to get a hint of what it will look like

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Old Aug 28, 2006, 07:21 PM
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now THAT is SWEET! if u decide to kit this i would love one!
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Old Aug 28, 2006, 07:30 PM
more power=almost enough
JetTech's Avatar
USA, ID, Boise
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Dennis,
Well brother you keep building beautiful planes. And all this without cad or laser cut stuff........ very impressive!!. Just like the "old" days huh? Not saying anything about your age there you understand. *grin* It looks beautiful so far. You might have interested me in another bi-plane again with this one. Looking fwd to seeing this one through to completion. Now, hurry up and build it will you.
Kerry
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Old Aug 28, 2006, 09:24 PM
RMS
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Dennis,

You probably already know this but you can really soften the balsa with amonia or windex....it's not hot either and it is faster acting.

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Old Aug 29, 2006, 03:50 AM
.................
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Phoenix,Arizona, United States
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Very nice!

Using a section of 1/2 or 3/4 inch pvc pipe with one end capped is a good way to soak long strips of balsa.

Dylan
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