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Author Topic: Swing Control  (Read 8325 times)
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sx976
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« Reply #75 on: July 08, 2019, 11:30:10 AM »

No chance of flying due to the wind, so I modified the C-17 to Whip Control. Roughly the same size and weight as my excellently flying Pole Cat, so I'm confident it will fly well too.
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sx976
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« Reply #76 on: July 10, 2019, 12:50:40 PM »

The new extending line pole had a few issues. The line tended to tangle and the models were very hard to fly on the 3x pole length. I think the next step is to abandon the pulley concept and go for 2x pole length as a start, maybe with the line running up the middle of the pole.

I am now also convinced that the tip mounted tether on the model is the better solution.
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OZPAF
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« Reply #77 on: July 10, 2019, 08:57:08 PM »

Interesting. I was looking at your C-17 and my impression is that the attachment point needs to be further forward - particularly for long lines. The line will angle back from the tip of the rod to the CG of the model at an angle depending on the line length and the weight of the model. It's the exact opposite of the line rake required for control line models as with whip control the power is coming from the whip and in control line from the model.

A small bracket extending from the wing parallel to the fuse with  few holes in would help to get the model flying smoothly.

Happy flying.

John
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sx976
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« Reply #78 on: July 12, 2019, 05:19:27 AM »

Hi John

Thanks for your input and I completely agree with you. So pleased there is actually someone reading this stuff!! I have 3 new models (small Chinese foamies) and had already done the same as you mention. I tried just the fuselage tether as it was recommended in the Michael Payne article a few posts back, but it didn't work well for me.

Attached photos of the X-18, X-22 (each €8 on Ebay) and the Eagle (just over €6 from Banggood). The two jets fly fabulously well and I will now paint them in camouflage schemes with acrylic paint.

If anyone should try the X-18 or X-22, remove the rubber nose, use a Phillips screwdriver to make a hole about 20cms long rearwards into the fuselage and push in a carbon tube. Replace the rubber nose. I presume the models are so cheap as the nose will break off on the first flight. With the carbon tube they're bomb proof.
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sx976
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« Reply #79 on: July 12, 2019, 05:31:07 AM »

Here is the new, much simplified extending line pole. As one line is inside the pole, the chance of tangles will hopefully be reduced.
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OZPAF
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« Reply #80 on: July 12, 2019, 09:13:24 PM »

I have a part finished F16 in Balsa that I had intended to fly with 2 lines to a bell crank on the model. I'm still slowly pondering how to achieve it simply. These models were common in the early 50's and I have heard of them being flown on lines up to 25-30' or more. However these controlled versions needed both hands to fly and possibly someone else to launch the model.

Good luck with you experiments.

Is "Simple Flyer" still around? He was an interesting fellow and I enjoyed his posts.

John
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PB_guy
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« Reply #81 on: July 13, 2019, 01:03:47 AM »

I'm sorry to say that SimpleFlyer (Albert Locker) passed away last year. See: https://www.stickandtissue.com/cgi-bin/yabb2/YaBB.pl?num=1532979682
ian
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sx976
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« Reply #82 on: July 13, 2019, 09:19:56 AM »

I have a part finished F16 in Balsa that I had intended to fly with 2 lines to a bell crank on the model. I'm still slowly pondering how to achieve it simply. These models were common in the early 50's and I have heard of them being flown on lines up to 25-30' or more. However these controlled versions needed both hands to fly and possibly someone else to launch the model.
I am obviously also slowly working towards elevator control. There are snippets of (old) information on the net on how to do it. I have attached (again) a photo of Jim Walker and a profile Bell X1 plan. However, I expect there will be a learning curve just like I'm experiencing with the single line stuff at the moment.  
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OZPAF
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« Reply #83 on: July 14, 2019, 04:39:25 AM »

I'm sorry to hear that Ian. His gentleness came through in his posts.

sx Here is another plan from 1979 - A F15 eagle. I'm trying to come up with a simple means of operating with only one hand required.

John
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« Reply #84 on: July 14, 2019, 05:18:07 AM »

Sorry to hear about SimpleFlyer.
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sx976
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« Reply #85 on: July 15, 2019, 05:16:27 AM »

I mentioned I was going to paint my X-18 and X-22 in camouflage with acrylic paint. I started in on the X-18 and, er, the paint attacked the foam surface. I thought that the models were the more sensitive styrofoam not EPP, but didn't realize that acrylic would attack it. Should have used poster paints, which I think are water based. I have binned the model and ordered a replacement. No great loss for €8.

The F15 Eagle article was new to me. Thanks!!

Regarding one handed operation of the elevator. Don't shoot me for this, but...……

I fly my electric control line models with a Car Tx controlling the throttle. Much better (and cheaper!!) than fancy vintage 3-line handles and bellcranks. So I guess it would be very easy to fit an small indoor Rx and micro servo in the plane and operate the elevator 'in the other hand' off a Car Pistol Grip Tx throttle lever. Cheap as chips from Hobby King & Co.

I did not personally know Simple Flyer, but it's always sad to hear that creative modellers have passed on.  
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sx976
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« Reply #86 on: July 15, 2019, 06:20:47 AM »

Two little ones, just for fun. A Zyo-6 from Banggood and a Guillow's Rockstar from Ebay. I covered the Rockstar's wings with 1/32'' balsa instead of the transparent mylar foil provided.
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sx976
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« Reply #87 on: July 17, 2019, 12:57:52 AM »

The replacement X-18 came. When I started to take the tether off the one I had tried to paint, I found that the paint peeled off like a sticker and underneath the model was perfect. What I thought was paint attack on the model, was paint attack of the second colour on the first!! After a couple of hours of patient peeling, I now have a second X-18. I also have a second X-22. I had bought it as a chuck glider for the grandchildren about 5 years ago, had totally forgotten about it, and rediscovered it in the cellar. I will use the second models for ballasting trials.  

I want to start going a bit bigger with the models. Not as much as the Lidl glider until I get that one sorted. I discovered the Revell Space Glider. I thought it was expensive at almost €19, but it is a great lump of a thing. Well worth the money. Although the span is only 525mm, it is 570mm long and weighs an impressive 97g.

I also got the Alpha Jet from Banggood as it was on offer at around €13. Not as hefty as the Space Glider, but good looking and bigger than the X-18 & X-22 at 470mm/67g. I will push in carbon tube reinforcements from the nose on both of them.
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