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Old Dec 13, 2013, 07:00 PM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
Mini-HowTo
60" wingspan Old Fogey-ish

Several people have asked me for build details of my 60" wingspan Old Fogey-ish slow flyer , so here you go ...

AUW with two 1600mah 3 cell batteries : 1073 grams ( 37.85 ounces ) .

Everything is "paper off" $Tree foam except for the top (inside) layer of the fuselage bottom , I left the paper on there for strength .

The wing construction is like the Old Fogey on FliteTest , but with a 3 part under camber airfoil instead of a 2 part .

Everything is a single layer of $Tree foam , except the vertical and horizontal stabilizers , fuselage bottom , and the center ( straight ) part of the wing are double layer foam .

I put all the electronics ( including servos ) as far to the front as possible to get the CG , which is about at the apex of the wing's airfoil .

I assemble all the pieces with scotch tape for a trial fit before gluing with low temp hot glue .

Keep it light for slow flight !

FT Old Fogey-ish with 60" wingspan (1 min 56 sec)
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Last edited by balsa or carbon; Jan 01, 2014 at 10:53 AM.
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Old Dec 14, 2013, 09:25 AM
Whatever goes up must go BOOM
joker24458's Avatar
United States, OH, Kent
Joined Mar 2012
2,272 Posts
Amazing! That thing just floats!

-Andres
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Old Dec 14, 2013, 01:11 PM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
Quote:
Originally Posted by joker24458 View Post
Amazing! That thing just floats!

-Andres
Thanks Andres ! My goal was to make a very slow flying plane .

Al
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Old Dec 15, 2013, 01:38 PM
AKA Captain Crunch
lumaflyer's Avatar
United States, CA, Larkspur
Joined Mar 2012
71 Posts
Nice Floater!
Bet it would be a good plane to teach with...
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Old Dec 15, 2013, 02:20 PM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
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Originally Posted by lumaflyer View Post
Nice Floater!
Bet it would be a good plane to teach with...
Thanks !
Unfortunately it's pretty fragile ( due to the large size and lightweight construction ) and needs to be flown GENTLY . I don't think it would hold up to a first time flyer's tendency to oversteer , etc.

The planes I use for teaching are my smaller , lightweight , homemade EzFlys . They are also very stable and slow flying , but are strong enough to loop , pull out of dives , etc. Here's one ( flying with my right hand while filming with my left hand )


Copy of EzFly with under-cambered wing (1 min 57 sec)


Al
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Old Dec 16, 2013, 08:14 PM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
New higher altitude video

After flying the big one several times , I now trust the strength of the wings enough to take it up higher . It's SO slow that it's almost boring to fly !

60" wingspan Old Fogey-ish flying up higher (4 min 52 sec)


Al
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Old Dec 17, 2013, 02:22 AM
Registered User
Rhudson1960's Avatar
United States, NY, Fulton
Joined Sep 2013
114 Posts
Looks like it would do well indoors in a big enough space. You could launch Peanut Scale models from under the wing
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Old Dec 17, 2013, 02:27 AM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
Quote:
Originally Posted by Rhudson1960 View Post
Looks like it would do well indoors in a big enough space. You could launch Peanut Scale models from under the wing
I would love it if we had a large indoor flying space around here , but I haven't found one yet .
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Old Dec 17, 2013, 05:20 PM
7up
,ɯǝ ʇoƃ ɐʎ ɟı ,ɯǝ ǝʞoɯs
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USA, KY, West Liberty
Joined Jun 2001
1,154 Posts
Gotta build me one of these... I like turtles.

-Buk
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Old Dec 17, 2013, 05:56 PM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
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Originally Posted by 7up View Post
Gotta build me one of these... I like turtles.

-Buk
Awesome ! Show us photos/video please !

Al
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Old Dec 17, 2013, 07:29 PM
low tech high tech
vtdiy's Avatar
Southern Vermont
Joined Feb 2007
3,029 Posts
Quote:
Originally Posted by balsa or carbon View Post
After flying the big one several times , I now trust the strength of the wings enough to take it up higher . It's SO slow that it's almost boring to fly !
Al
Boy that really is slow! That's about the slowest straight and level flight I've seen.

Well you could add a keycam and use it for photography without increasing the weight noticeably -- that might make it more fun.

Carrier landings? Minimal length touch and goes? Stuff like that.
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Old Dec 17, 2013, 08:46 PM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
Quote:
Originally Posted by vtdiy View Post
Boy that really is slow! That's about the slowest straight and level flight I've seen.

Well you could add a keycam and use it for photography without increasing the weight noticeably -- that might make it more fun.

Carrier landings? Minimal length touch and goes? Stuff like that.
I've been wanting to put a camera on it , but my keycam is incognito - I'll have to order another one .

My next project is going to be a 10 foot wingspan version of this plane , also an incredibly slow flyer !

Spectacular HUGE RC plane. 16 square meter wing SLOW MFK FALKEN (11 min 23 sec)


Al
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Old Dec 19, 2013, 12:06 AM
Registered User
United States, NC, Troy
Joined Dec 2008
238 Posts
Great plane! I've got to build one!

What motor are you using? Is there a reason you need two batteries?
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Old Dec 19, 2013, 12:51 AM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
Quote:
Originally Posted by iwlf View Post
Great plane! I've got to build one!

What motor are you using? Is there a reason you need two batteries?
The motor is a DT750 from HobbyKing , and it needed the weight of the two batteries to get the CG .

If you make one , photos and video please !

Al
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Old Dec 19, 2013, 10:16 PM
Hot glue held together by foam
United States, WA, Vancouver
Joined Aug 2010
2,853 Posts
One more video

Here's one more video - it's my favorite plane to fly lately !

Another video of 60" Old Fogey (3 min 39 sec)


Al
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Last edited by balsa or carbon; Dec 20, 2013 at 10:35 AM.
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