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PT-Foamy (A picture documentary) (Now with plans) (And Video)

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PT-Foamy (A picture documentary) (Now with plans) (And Video)

Old 05-08-2006, 10:21 AM
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Default PT-Foamy (A picture documentary) (Now with plans) (And Video)

All of this has been posted in the "Fun with Flat Foam" thread, but I wanted it in one spot.
This was a project to turn the PT-40 into a park flier.
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Old 05-08-2006, 10:24 AM
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Default RE: PT-Foamy (A picture documentary)

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Old 05-08-2006, 10:27 AM
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Default RE: PT-Foamy (A picture documentary)

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Old 05-08-2006, 10:29 AM
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Default RE: PT-Foamy (A picture documentary)

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Old 05-08-2006, 03:45 PM
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Default RE: PT-Foamy (A picture documentary)

Wondering where the build guide/plans are... humm mr cool
Old 05-08-2006, 04:46 PM
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Default RE: PT-Foamy (A picture documentary)

Erm.. in my head?? I don't know how to make all the fancy tiled PDF files, but I can draw some on paper and scan it if anyone is interested.
Old 05-08-2006, 09:30 PM
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Default RE: PT-Foamy (A picture documentary)

Here are some crude plans. They are totally NOT to scale, so don't just try to blow them up and build from it.
They don't explain everything, but between this and the pics you should be able to figure it out. If you have any questions I would be glad to help.


Edit: just noticed a mistake, The little cut-ins on the bottom piece should be 1/4 inch, not 1/2 inch. This is made to fit the fuse doubler as seen in the pics.

Edit 2: The wing width is 7 1/2 inches
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Old 05-16-2006, 02:41 PM
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Default RE: PT-Foamy (A picture documentary) (Now with plans)

So what did the weight come out to be? Has it flown? What are you using for power and battery?

I'm not exactly interested in building one but your building method gives me some ideas.

Mike
Old 05-30-2006, 08:37 PM
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Default RE: PT-Foamy (A picture documentary) (Now with plans)

I don't really have a way to weigh it, but I would guess empty it is about 16-18oz.
Right now I am powering it with a brushed gws350 on C gearing (about 6.6:1), Great Planes c-20 esc and a electrifly 1200mAh 3cell LiPo.
It is a little sensitive to wind, but it flies EXACTLY like the original PT-40. It's got really good vertical, it centers itself pretty well. Rolls are really sloppy because it is 3 channel. Big loops are graceful and easy but if you pull up hard it will go into a high speed stall. If it is at all possible I would say that it lands easier than the PT-40. EXTREMELY SLOW even at a nose down attitude.
Old 06-07-2006, 04:35 AM
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Default RE: PT-Foamy (A picture documentary) (Now with plans)

Thats pretty cool, is that foam expensive?
Old 06-07-2006, 07:19 PM
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Default RE: PT-Foamy (A picture documentary) (Now with plans)

Nope. About $30-35 for a whole big stack of it at Lowe's.
Old 06-18-2006, 10:14 PM
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Default RE: PT-Foamy (A picture documentary) (Now with plans)

Well i got tired of 3 channel. So i built annother wing. Just cut 3/4 an inch off the original plans. Build it with no dihedral and tape 3/4 inch strip ailerons on her. Linked up the servo using Du-Bro's Micro Aileron System, works great. Here are some pics and video.
[link=http://media.putfile.com/Foamy-Flight-91]http://media.putfile.com/Foamy-Flight-91 [/link]
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Old 10-25-2007, 10:12 PM
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Default RE: PT-Foamy (A picture documentary) (Now with plans)

Well I've been using this plane for a while now and it has turned into my testing plane. It has been moded into a night flyer and a float flyer. Here are some pics and vids

[link=http://video.google.com/videoplay?docid=-2749832242800086211&hl=en]Night Flyer ground test[/link]
[link=http://video.google.com/videoplay?docid=8793667015047184036&hl=en]The PT-Floaty[/link]
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Old 10-25-2007, 11:29 PM
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Default RE: PT-Foamy (A picture documentary) (Now with plans) (And Video)

wow, that is neat, how hard or easy is it to fly???
Old 10-26-2007, 08:06 AM
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Default RE: PT-Foamy (A picture documentary) (Now with plans) (And Video)

With the 3 channel wing on it is very very simple to fly. I have used it to train people who have never even seen rc planes before. Took it to my family's 4th of july party and gave everyone who wanted a shot at flying on the buddy box. In 4 channel it adds a little weight and looses the dihedral. It flys a bit faster and is much more acrobatic, but still really simple to fly. The one time I flew it with the floats on it was pretty windy so I didn't get a chance to wring it out much. The one thing I consistently noticed was that I was forced to co-ordinate my turns (i.e. use both rudder and ailerons) as it would want to enter the turn quite nose high.
Old 10-26-2007, 06:14 PM
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Default RE: PT-Foamy (A picture documentary) (Now with plans) (And Video)

hi im new i like people and make feel welcom i like this website .last week this guy ask me what was my favorite website and guess what i said this one of coruse i get job at fish and chip shop it is great hear from u my friend s soon thank you for listening my friends john
Old 10-26-2007, 07:11 PM
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Default RE: PT-Foamy (A picture documentary) (Now with plans) (And Video)


ORIGINAL: coolbean

With the 3 channel wing on it is very very simple to fly. I have used it to train people who have never even seen rc planes before. Took it to my family's 4th of july party and gave everyone who wanted a shot at flying on the buddy box. In 4 channel it adds a little weight and looses the dihedral. It flys a bit faster and is much more acrobatic, but still really simple to fly. The one time I flew it with the floats on it was pretty windy so I didn't get a chance to wring it out much. The one thing I consistently noticed was that I was forced to co-ordinate my turns (i.e. use both rudder and ailerons) as it would want to enter the turn quite nose high.
thanks, probabaly going to use a modified design as my engineering class project, want to have a working demo, supposed to be a power point presentation, but what the heck, why not make it work, prob going to also make it out of foamcore board - the paper = SUPER light stuff[8D]

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