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Old Jul 19, 2012, 10:55 AM
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chris1379's Avatar
United States, OH, Eaton
Joined May 2006
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I'm working on a pattern plane similar to the old "Birdy" planes. This is all new to me so anyone who wants to add ideas can jump right in.
Chris
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Old Jul 19, 2012, 11:53 AM
Dont Mess Up!
Joined Jul 2011
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Quote:
Originally Posted by Freddie B View Post
I now stay away from KFm personally. I don't use ribs either. Folded over spar is a common easy task. Also been doing something else when fff is the material. But sometime today I am going to do a wing for a $Tree plane, and do the Sparks type wing. Similar to a FW-190 video I saw from WWII, multi foam spars, no ribs, and seems like it should be quick enough, easy, and strong.

Will probably post phots if anyone wants to see them?

Fred
Yes i would like to see them. Is there any particular reason why you stay away from kfm?
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Old Jul 19, 2012, 07:36 PM
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Omaha Nebraska
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Originally Posted by JickRones View Post
Yes i would like to see them. Is there any particular reason why you stay away from kfm?
KFm are great for many builders, and they are here to stay. They do work well for the minimal work involved. They do shine in some aspects and fall short in others. So it all becomes a personal decison when one decides to invest time in building airframes.

I find that KFm airfoils take me as much time to make as a conventional airfoil, but are still fairly heavy, and can also be prone to twisting because of design. That coupled with higher stall speeds, and less lift generated for a given size. Many conventional airfoils can also fly much slower speeds yet provide a wider speed envelope.I have been flying RC for a number of years, and as a pilot I feel the airplane performs more to my liking with conventional airfoils. I prefer a conventional airfoiled wing for the looks too, also making it easier to create scale looking aircraft.

So it is my personal preferance to make my own aircraft with something other than KFm types. I just feel that they are more fun to fly. My flying style probably isn't the same as many here though.

Fred

Some interruptions today but I'll be back with some on the Sparks inspired wing idea.
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Old Jul 20, 2012, 02:12 AM
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United States, WA, Vancouver
Joined Mar 2012
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my $tree foamboard F-4 Phanton, 70mm EDF, 30" span 41"long, 26-27oz's AUW,
flies awsome. plans are here:
http://www.rcgroups.com/forums/showthread.php?t=1678727

Joe

inflight vid here:

painted phantom (4 min 55 sec)
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Old Jul 20, 2012, 02:24 AM
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Omaha Nebraska
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Joe,

That F-4 is nothing short of a work of art! Most excellent! Thanks for sharing and the link to your build thread.

Fred
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Old Jul 20, 2012, 04:46 AM
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Joined Oct 2004
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Originally Posted by JickRones View Post
Hey olddog,
Build looks good so far, but what kind of airfoil will you be using? With $tree foam i can never decide between standard ribbed wings or kfm.
I will be making an arman wing.That's symmetrical.
Here is the link to the thread for building an Arman wing.
http://www.rcgroups.com/forums/showthread.php?t=699643
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Old Jul 20, 2012, 11:07 PM
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United States, CA, Roseville
Joined Nov 2011
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Quote:
Originally Posted by sloperjoe View Post
my $tree foamboard F-4 Phanton, 70mm EDF, 30" span 41"long, 26-27oz's AUW,
flies awsome. plans are here:
http://www.rcgroups.com/forums/showthread.php?t=1678727

Joe

inflight vid here:

http://www.youtube.com/watch?v=-ePoQ...layer_embedded
Wow! That's a monumental achievement!
Thanks for the link to the plans...
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Old Jul 21, 2012, 02:20 AM
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United States, WA, Vancouver
Joined Mar 2012
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hey thanks guys,
I am currently attempting an A-6 Intruder with $tree foamboard for a 50mm EDF, shouldnt be too long till it maidens.
heres the build thread if interested:
http://www.rcgroups.com/forums/showthread.php?t=1692750

Joe
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Old Jul 21, 2012, 09:07 AM
figuring it out...sort of!
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USA, OR, Happy Valley
Joined Jul 2010
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Quote:
Originally Posted by sloperjoe View Post
hey thanks guys,
I am currently attempting an A-6 Intruder with $tree foamboard for a 50mm EDF, shouldnt be too long till it maidens.
heres the build thread if interested:
http://www.rcgroups.com/forums/showthread.php?t=1692750

Joe
Thanks Joe! That is my favorite jet! Thanks for taking the initiative to build this. Subscribed for sure! That EDF is on my next hk order! Impatiently waiting,
Marc
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Old Jul 21, 2012, 12:47 PM
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carr52's Avatar
United States, SC, Irmo
Joined Mar 2012
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Quote:
Originally Posted by olddog View Post
I will be making an arman wing.That's symmetrical.
Here is the link to the thread for building an Arman wing.
http://www.rcgroups.com/forums/showthread.php?t=699643
I looked through all the page of the thread but couldn't find the build for an Arman wing. I was just wondering what it is. Is it a style of wing or theprocess to build a wing? Thank you for all your help.

Tom
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Old Jul 21, 2012, 02:25 PM
Just Me
United States, OR, Salem
Joined Apr 2006
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Quote:
Originally Posted by carr52 View Post
I looked through all the page of the thread but couldn't find the build for an Arman wing. I was just wondering what it is. Is it a style of wing or theprocess to build a wing? Thank you for all your help.

Tom
Tom,

This might help you out.....

http://www.rcgroups.com/forums/showthread.php?t=1587275
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Old Jul 21, 2012, 02:48 PM
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United States, SC, Irmo
Joined Mar 2012
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Ok, thanks. Thats what I was needing. Thanks again for the help. Looks like I have a new project idea to work on now.

Tom

Update: Went back and looked at the noob tube thread again. I like that. Gotta give that one a go. Thanks.
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Old Jul 22, 2012, 05:09 PM
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Originally Posted by carr52 View Post
Ok, thanks. Thats what I was needing. Thanks again for the help. Looks like I have a new project idea to work on now.

Tom

Update: Went back and looked at the noob tube thread again. I like that. Gotta give that one a go. Thanks.
Yes the Noobtube is a very good flyer. I have one that i covered in Express Mail tape.
Ok i am starting to work on the Arman wing now for the AJ Slick.
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Old Jul 24, 2012, 05:09 AM
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Here is an update on the Slick i am building, it is coming along nicely but not quite ready for the maiden yet.



Uploaded with ImageShack.us

Stay tuned
OD
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Old Jul 24, 2012, 08:18 AM
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United States, SC, Irmo
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Looks great.
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