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Corsair Swing Flyer with u-control (Read 925 times)
Reply #32 - Oct 28th, 2018 at 1:57am

DAVE Q   Offline
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pb_guy wrote on Oct 27th, 2018 at 9:36pm:
Is it possible that the model is too nose-heavy? The bellcrank pivot should be fairly close to the balance point?
ian


ian, thank you for your comment, I appreciate it. Please do not take these comments as facts, because I do not know what the problem is. The whole reason I tested this as a single line flyer, is that, it gave me the CG, nose weight, and location for the bellcrank, from a model that I could see that it actually flew. The only technical thing about tether flying is the nose weight. Not enough weight, and the plane climbs constantly to a stall, with only the slightest amount of speed. When the weight is right, slow speed of course the model drops. Average speed the model maintains level flight, and higher speed the plane slowly climbs. And if you really pour on the steam, you can work the plane into wing overs, and from there, into loops. At this time, you can only maintain loops for a short amount of time (15 secs?), because it takes a lot of effort. Getting it out of a loop, and back into normal flight, sometimes is a little tricky. I achieved this with my single line test. So, this is all I have to go from. After saying that, using two hands instead of one, really slows you down, and is much more difficult to turn as fast. And I guess after saying that, trying to use two hands, at this scale, I am just not getting up enough steam. I guess? And after realizing all that, this is starting to motivate me to do a half scale test. This post may pick back up another day.
 
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Reply #31 - Oct 27th, 2018 at 9:36pm

pb_guy   Offline
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Is it possible that the model is too nose-heavy? The bellcrank pivot should be fairly close to the balance point?
ian
 
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Reply #30 - Oct 27th, 2018 at 3:35pm

Sky9pilot   Offline
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Sorry to hear plan "C" failed.  I think speed might be your problem.  I'm not sure how that would be overcome...except as you say smaller model, but I'd thought that your solution would have worked.  As Alexander Grahm Bell said,"...found another way how not to make a lightbulb!"  Failure is always the best teacher.  Best of luck with the next plan!
Tom
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #29 - Oct 27th, 2018 at 12:37pm

DAVE Q   Offline
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Well, sorry to say, (PLAN C) FAILED. Plan (C), was to put much larger elevators on it. I used double layers of card stock just for a test. Same results as before, up elevator just puts the plane in a nose high attitude, and does not climb at all. I have known these results for some time now, but was hoping something else would come to me, nothing has. I am not sad that I failed, I am sad that the idea failed. I just don't understand how someone printed the examples shown earlier, of this idea, and I can't get it to work. With the length of the lines, and the size of the plane. I don't see in any way how you can hold the pole in your left arm, and use the control in the right. Coordination alone is a major issue. I just guessed at the size of the plane compared to what I already have been flying. Maybe if the plane was half the size and weight. And the lines were half as long, maybe this would help with more power. And make this idea work. Sorry to say, but I think I am going to convert this plane back to single line control, finish it up, and enjoy it that way. Well I guess this post did have one positive. I learned what NOT to do in tether flying. I think taking everything to half scale as what I did, is my only guess at this time, to make this idea work.
 

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Reply #28 - Aug 11th, 2018 at 2:15pm

Sky9pilot   Offline
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My fly pole was two piece about 10ft long!  I think it might have worked well for light models.
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #27 - Aug 11th, 2018 at 2:11pm

DAVE Q   Offline
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Sky9pilot wrote on Aug 11th, 2018 at 2:06pm:
I wish I'd kept my fly fishing pole.  It was long and very flexible.  Best of luck with the new pole.
Tom


The bamboo pole and this new fishing rod is about 6 1/2 feet long. I do wish it was longer.
 
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Reply #26 - Aug 11th, 2018 at 2:06pm

Sky9pilot   Offline
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I wish I'd kept my fly fishing pole.  It was long and very flexible.  Best of luck with the new pole.
Tom
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #25 - Aug 11th, 2018 at 2:06pm

DAVE Q   Offline
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Once I had the new thinner line hooked up to the new fishing pole. I moved onto plan B for the Corsair. Plan B was, to hook up the line attached to the end of the pole, to the down elevator.  The down side remains a fixed length. Then I ran an independent line from the up elevator back, and down the eyelets of the pole. And tied a loop in the end of the line. And hooked the loop around my right hand fore finger. The idea is to relax your finger to let the plane go down. And bring it in for up elevator. The idea kind of works. You can hold the pole with 2 hands now, if you want. And also, you can stop spinning and hold neutral elev, and spin the pole behind you. And now, because the pole is so much easier to handle this way, you can feed in up elev, and easily follow thru with the pole, and do a large loop. Come out of the loop, relax your finger a bit, and level out. It takes a lot of steam to do all this. Speed is also part of making the elevator work better, DUH. I used solid sheets to build this Corsair, because this is what the attached pictures show. I am starting to wonder, if a lighter plane would work better. Like a No Cal design, with an enlarged elev. It would take a lot less steam to keep it going. I'm going to need a friend for pictures on this one Tom. It takes all the steam this old man has to keep this one doing maneuvers. I will say this so far, single line tether is much easier. Plan C to come.
 
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Reply #24 - Aug 11th, 2018 at 1:38pm

DAVE Q   Offline
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Tried the new fishing pole with 2 of my single line tethers. To my surprise, it was almost exactly as long as the bamboo pole I had. Kind of was hoping it was about a foot longer. It is though, easily half the weight. Worked just great with the single line tethers. Takes less steam to keep things flying.
 
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Reply #23 - Aug 11th, 2018 at 1:07pm

Sky9pilot   Offline
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Well done Dave!!! 
I look forward to pics of them at work, the pole and Corsair... Smiley
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #22 - Aug 11th, 2018 at 9:50am

DAVE Q   Offline
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Jackpot. Stopped in a flea market this morning, and I could not believe it. It's about a foot longer than the bamboo pole I have, and easily half the weight. Best part of it, $3.00. Also, I have a plan B to come for the Corsair.
 

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Reply #21 - Aug 10th, 2018 at 12:17pm

Sky9pilot   Offline
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I think you've discovered why Al used a single line for swing flying and then he experimented with the flight pattern from there.  I've never done any swing flying and I'm definitely going to have to give it a try.  Sold all my fishing poles in my move to TX and so I'll have to find a "Blue Light" special fishing pole to experiment with! Cheesy Wink
 

If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Reply #20 - Aug 9th, 2018 at 2:23pm

DAVE Q   Offline
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Finally had a chance to get controls on it. Had an old handle with string already on it already, so I rigged it up. Gave it a test flight. Learned a lot, but none of what I wanted to learn. If your rt handed, and use the rt arm to hold the pole, and the lt hand to work the controls, that does not work. If you use your lt (weaker) arm, to hold the pole, and your rt hand to work the controls, it feels a lot better. But now your putting all your steam to keep it flying thru your weaker arm. When I fly single line tether, I can switch between arms. I really do not know how to put my flight experience into words. Basically, I was not impressed. I enjoyed it much better as a single line tether. Up control really did not do anything. And I could see the elevator pointing up. Maybe I was not following thru with the pole correctly. Maybe the airplane needs to be lighter. Maybe the lines need to be shorter, but then you need to spin faster. If the lines were longer, now I am going to need more steam. I do wish I had a nice fishing pole, instead of a 6" piece of bamboo. I'm going to sleep on it, and see if any ideas come up. But to be honest, at this point, I enjoyed it as a single line tether much more.
 

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Reply #19 - Aug 9th, 2018 at 2:02pm

DAVE Q   Offline
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Just thought I would re post these pictures so they are a part of this post.
 
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Reply #18 - Jul 29th, 2018 at 10:07pm

shipwreck   Offline
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Thanks Dave!
Plane is looking good! That is a cool picture from what I can see. Not sure on the year.
Paul
 
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