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Old Feb 16, 2016, 02:50 PM
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Dream it...Build it...Fly it!
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United States, MO, Macon County
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Maiden Flight of my V-angina

My wife made me a Valentine's airplane. Got it finished enough to fly today.
Vtail KFm3 RC foamie (1 min 0 sec)
I had the controls on high rate.

She chose a Flite Test Slinger as basis. She didn't like the fact that it was built with foamboard with the paper on it, asked me about it, I suggested that she use a KFm3 wing that I used as the initial wing for my high wing flaperon plane. (I had increased the motor so much on that that I had to redesign the wing to bring the center of lift forward.)

Being as how it was for Valentine's day I suggested a V tail.

When it was done you can see the fuselage of the slinger, but it has it's own unique appearance.


It has a 36" wing, 306 square inches. AUW is 1lb 4oz. I have a 95 gram motor and a big paddle blade prop. At max it draws 19 amps on 3s.
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Old Feb 16, 2016, 03:42 PM
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Good looking plane guys
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Old Jun 18, 2016, 11:59 PM
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Was flying it tonight after a power upgrade. Nice steady and smooth. I tried a couple of rudder stall turns and noticed that it was not doing them. After landing I noticed that motion was correct, Both ruddervators go up with pulling back, when giving right rudder both go to the right. In flight, careful observation showed that they were rolling the plane like ailerons except that right rudder would roll it left. Using bank and yank the plane handled fine. No hint of directional instability. As a trial I set it up with reverse rudders and the plane would bank nicely with rudders and elevator controls.

I like flying it except for this quirk. I may set it up electronically so that only the up v-tail element in a turn turns the plane.

The input power to weight is over 200 watts/pound.
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Old Jun 19, 2016, 04:46 AM
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How cool is that, getting the wife to make aeroplanes for you. Wow! Lucky man.....
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Old Jun 19, 2016, 07:17 AM
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An itch?. Scratch build.
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Originally Posted by Grantham Kid View Post
How cool is that, getting the wife to make aeroplanes for you. Wow! Lucky man.....
I'm surprised it isn't a control line model


There are usually strings attached


Ray.
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Old Jun 19, 2016, 08:56 AM
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I'm surprised it isn't a control line model


There are usually strings attached

That was genuinely funny!!!!
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Old Jun 19, 2016, 09:28 AM
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Doesn't your wife build you planes? She has 8 or 9 herself.
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Old Jun 19, 2016, 03:10 PM
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Dave....

You've got a great partner there. You are a very lucky man.

~ Dick
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Old Jun 19, 2016, 04:49 PM
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Build straight - Fly twisty
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Doesn't your wife build you planes? She has 8 or 9 herself.
And we need to see some role reversal where she is on the sticks and you are shooting the video.
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Old Jun 19, 2016, 05:38 PM
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Build-Fly-Crash-Repeat
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And we need to see some role reversal where she is on the sticks and you are shooting the video.
As soon as I stop being nervous about being filmed and stop putting my Nut Balls into trees he will have permission to film me.

In all seriousness I'm just good enough to get myself into trouble that I need him to get me out of. So I need him hands free in case he needs to take over and bale my backside out of trouble when I fly. Although last night I did launch, fly and land my Old Fogey wannabee without help and without landing it in a tree so I am getting there. He says I greased the landing.

My poor Nut Ball is in a tree in the high canopy somewhere in our timber where it will stay more than likely until fall when we can hopefully find and rescue it.

What's funny is that we are starting to name trails in our timber after planes that we loose there and eventually find near the trails lodged 50+ feet up in old growth hickory or oak trees.

Thank goodness we heat with wood or I'd feel pretty guilty about murdering all those innocent trees.
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Old Jun 19, 2016, 05:44 PM
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Please mention that I am the nutball maker in the family.

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As soon as I stop being nervous about being filmed and stop putting my Nut Balls into trees he will have permission to film me.
.............
My poor Nut Ball is in a tree in the high canopy somewhere in our timber where it will stay more than likely until fall when we can hopefully find and rescue it.
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Old Jun 19, 2016, 05:50 PM
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I have been lucky with trees . I have 40 acres of them and a lot are over 100 ft tall. Luckily I have recovered all my planes so far. I have been treed at my mates place several times as well but once again managed to recover them.
I am playing it more cautious now and don't take any chances but somehow, something just seems to happen and that is where I end up. Luckily the Nutball is quite flexible as it has been recovered several times. I have had to throw ropes up and wiggle the trees with my tractor at times. Only once was a chainsaw required.

Me and my flying buddy (learner) John with Nutballs.

Nutballs (0 min 57 sec)
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Old Jun 19, 2016, 06:27 PM
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It is enthusiasm that counts, right.

Last year at this time I was lucky to land my planes GC. By next year my wife (and partner) will have few incidences. Our pasture was overgrown with scrub trees I am mowing about 5 acres and leaving rest for the Amish to cut hay.

Becky's last nutball was made from black foam. She called it 'blackball'. Made it difficult to see in the woods.

I'm not a very cautious flier, have been known to launch in 20mph wind. The game there is to keep it going up wind 90% of the time. Kind of like slope gliding in some respects.

Does anyone have an answer for the question I posed about Adverse Roll?
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Old Jun 19, 2016, 06:49 PM
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Any conventional rudder acting above the center line, as most of 'em are, will introduce an adverse-roll force when deployed. I have no idea why it's not more noticeable most of the time.
It's worth noting however that the indoor aerobatic magicians go for rudders that have symmetrical area distribution.
I guess the v tail you have, with its longish span, exerts more of this force than the normal rudder setup.
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Old Jun 20, 2016, 09:20 AM
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Please mention that I am the nutball maker in the family.
Consider it mentioned, my dear.



Actually our nutball assembly line has come to resemble Dr Frankenstein's laboratory. These little devils seem to take on a personality all their own and the truth of the matter is that I was VERY upset when my Blackball wound up in a tree. Granted, it was my own error, but I really enjoyed flying that little what ever you want to call it. Calling it an aircraft doesn't seem quite right for some reason.

Let it be known also that my husband immediately took one of his newer nutball creations and modified it for me so I could fly it.

I couldn't do this without his help and support.
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