GliderIreland - Ireland RC Forum - Flying Model forum in Ireland
Gliders => Slope Soaring => Topic started by: Freedom Flyer on January 17, 2012, 02:55:14 AM
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Here's a pic of all my sailplanes, someday I hope to have a mouldie or 2 in there.
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSC_0109.jpg)
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I know I posted this on another part of this forum, but these are my two older brothers, this Senior Telemaster is mine. We use these when the wind isn't blowing and we want to try some thermal activity.
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSC_0128.jpg)
This is my Oldest brother Arlen and I, and this is his Senior Telemaster built by my brother Wayne in the above picture.
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/PICT0011.jpg)
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hi tracy welcome aboard
some nice looking models there
i'm interested in the cradle you have on the tele master any close up shots of it, what method did you use to keep the glider on the cradle
i've done a bit of aero-towing in the past and i've always been the tug pilot but now i want to the the glider pilot and this might be a good method for me to get a flight :D
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(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_1477.jpg)
this is my hanger 9 cub with a 30cc dle engine i use for towing
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/letgcglider.jpg)
and this is my 2.5m cm pro discus on tow, ive had some great flights with this model off a flat field
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Wing is bolted on plane with 4 nylon bolts so I have utilized the wing bolts to mount glider cradle
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSCN1243.jpg)
Here's a pic from the back, the rubber bands up top stretch over the wing, across the leading edge down to a couple of music wire forks mounted through the dowel. I mounted the release servo flat and have a string going from the servo to a piece of music wire that is pulled back to release the dowel with the forks attached. pretty mechanical but seems to be pretty fail safe.
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSCN1246.jpg)
Here's one of two pics with rubber bands stretched over the wing to the forks
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSCN1250.jpg)
Note the wire protruding through the slot perpendicular to the one in the end of the dowel, that's the one that has the string attached to it going to the servo. The opposite end of that wire is attached to the opposite side of the cradle.
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSCN1251.jpg)
This is a picture of one of the wing supports, I made these adjustable as I haul up different wing configurations and needed to be able to move the supports up to the bottom of the different kinds of wings, I found these to be extremely important. Any breeze or wind during climb out to launch altitude will tip a larger plane to one side or the other causing all sorts of fun for the power plane pilot. Also be in sync. with the glider pilot and ready with your finger on the release switch and ready to dump the glider should you encounter some difficulty
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSCN1252.jpg)
Just another picture of the bands stretched over the wing to the dowel forks
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSCN1254.jpg)
A drawing of the dowel fork
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSCN1257.jpg)
Hope these drawings help explain how the release mechanism works
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/DSCN1258.jpg)
Here's a couple of pics of my Goldberg cub, I don't use it for anything except flying
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/PICT0009.jpg)(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/PICT0041.jpg)
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you're a gentleman tracy many thanks for that :clap: :clap:
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Andy,
Your Welcome, I hope you give it a try. Tracy
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Love that Cub on Ski's :D
D.
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hi tracy
you got me thinking big time
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0093.JPG)
this is a kadet senoir which belongs to my dad we're going to put a .62 two stroke engine in it
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0094.JPG)
this is the first stage of my cradle
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0095.JPG)
and checking out the model for size
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Andrew,
Cool! The .62 should be enough power providing you don't go too big with the plane you plan to carry. A few things I need to mention is to make sure the top of the cradle is the same incidence as the bottom of wing. They need to be parallel otherwise it causes all sorts of issues. The other is, I made my cradle with the sides opened up because it acts like another vertical flying surface and if there is any cross wind of any kind it affects the way the plane handles not only with the glider on board but even after you release it. I also tried to keep my glider as low as possible so it didn't act like a big weather vane on top of my plane. Also make sure you have PLENTY of rudder throw, I use both elevator and rudder when piggy backing a glider up. That Senior Kadet is a GREAT airplane, they've been around forever. I'm looking forward the finished product and hearing how it all goes. Thank you for sharing the photos with me. Tracy
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hi tracy
keep the advice coming :clap: managed to get a bit more work done today, i was able to lower the height by 2 inchs so the model is a lot lower to the top of the fuslage
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0096.JPG)
i've just cut the lighting holes on one side at the minute i'll try and get the other side done later :D
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You're making your cradle so nice and sleek, I'm going to have to make a new one, it makes mine look crappy and like I've never built anything before.
:oops: :oops:
Here's a couple of pics of my Older brother Arlen's Senior Kadet, very nice flyer, he has a 90 four stroke on his, PLENTY of power. He highly recommends it in a tail dragger configuration, I know Sig designed it in the trike gear configuration for beginning pilots, but it flys well either way. That choice would of course be yours.
Keep the updates coming, it looks Great! :clap: :clap:
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/IMG_0005.jpg)
(http://www.gliderireland.net/forum/images/uploads/Freedom%20Flyer/IMG_0007.jpg)
One other thing, you'll want to make sure that there is sufficient surface area on top of the cradle for the glider wing to support both leading edge and trailing edge of the wing.
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wow tracy
that's a beautiful model :D
the one that i'm gonna use is almost twenty years old, my dad's cousin built it and couldn't fly it so he gave to dad and he has kept it in the attic all these years :lol:
so hopefully it'll get a bit of flying now :D
at the minute it's tricycle under carriage but might have to change it to a tail dragger, we'll see if the nose leg can stick the extra weight on take off
we take off a grass strip and it has no alierons as well so i'll see how it flys with just the rudder first before cahnging it
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Andy,
My brothers plane is an ARF plane, it came with ailerons. He added the black pin striping, moved the landing gear for the tail dragger configuration and because of our altitude put the big 4 stroke on it, I don't think he needed to go quite as big as he did :shock: :shock: but it does fly very well and is a very relaxing model to fly.
I would strongly suggest that you do at least one thing before attempting to haul up a glider, I think it would wise be to add ailerons to that plane, it's a decent sized rudder but I don't think you will be able to maintain control with a sailplane mounted to the top with rudder only. I'm not saying you should, but you might also want to be prepared to go with a tail dragger set up, especially if you are flying off of a grass strip. There's going to be just enough weight added to the plane and also enough in front of the CG that it may cause the nose gear to "dig in". I do think it will be plenty of plane to haul up the glider you have sitting on it in the picture, and if you can put some sort of support out near the bend in the glider wing to keep it from tipping side to side. :)
The very first RC plane I saw fly was a Sig Kadet Senior, the guy that helped me get started in the hobby had one. He had made a set of skiis for it so he had a great big nose ski that the prop just barely missed when running, it was rudder only but flew great on the powder snow he was flying off of. Unfortunately his depth perception wasn't as good as it should have been and he hit a football goal post about 6 inches out from the fuselage on the left side of the wing, it was a total loss but fun while it lasted. :D :D Keep the photos coming I'm excited to see the progress. After seeing yours you'll probably see a pic of a new one mounted on my plane. Tracy.
P.S. Do you guys get any snow on the tops of your slopes? and do you fly mode one or two there?
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hi tracy
i've been busy this past week or so and i haven't been able to get much work done :(
we have had no real snow this year so far :D
i have the cradle made and i was wondering how do you keep the wing from slipping back when you pull the bands across i find the wing tends to slip back a good few inches and that would affect the CG i was trying to keep the wing leading edge close to the leading edge of the plane :?: :?:
thanks for your help and hope to get a few photo's soon i have the plane converted to a tail dragger now :D
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Andrew,
If you go back and look at the pics of my cradle, notice where the rubber bands are attached at the back of the cradle, up near the corner of the cradle. When you rubber band the glider to the cradle, the trailing edge of the wing is up against the attachment point and will not allow the glider to slide back at all. In fact it is very tight at the trailing edge and have cut away the monocote and placed 1/32 plywood on a couple of my gliders to keep the balsa from being crushed. I haven't experienced any of my planes sliding back during a launch. :) As long as you have your cradle mounted firmly on the plane to where it can't move, that shouldn't even be an issue. I would suggest when you get your cradle done to mount it on the plane and take it up for a flight to see how the Kadet reacts with it on it's back. Have you decided if you are going to add ailerons? I think it would be very beneficial. thanks for the update I'll be in touch, looking forward to more pics. Tracy
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once again tracy you're spot on i moved the postition of the rubber band and that cured the wing slipping back
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0109.JPG)
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0110.JPG)
for the picture i'm holding the cradle on with two rubber bands but i'm lookin at a way to bolt the cradle to the wing :?:
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0111.JPG)
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0115.JPG)
i'm going to use my fling for the first couple of flights then i'll move on to the bigger models.I'm going to fly first using the rudder only to put ailerons on i'm gonna have to strip the wing it's covered in nylon and doped
weather permitting might get out this weekend :D i'm in the middle of decorating the hall, stairs and landing :!: and i have to keep at it to keep the wife happy :lol:
thanks for all the help so far :clap:
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Andrew,
Great pics, thanks for sharing. I think I like your release mechanism much better, seems like there would be less friction and a more direct release. I may make that adaptation when I redo mine. :D The Red, White and Yellow sailplane looks to have a pretty decent wingspan, again I would suggest wing supports about 1/2 way out on the plane wing under the glider wing. There's some really strange forces going on during the flights and I have had gliders tip to one side or the other during the flight with a cross wind, it makes the flight verrrrrry interesting :shock: :shock: :shock:. If your going to haul multiple types of gliders you'll want to make it adjustable to fit the different wing configurations but if your going to haul one type it could be something very simple just to keep it from tipping. Hope all goes well for the test flight good luck. Tracy
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(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0141.JPG)
hi tracy finally got out to try the cradle today i used cable tie's to secure the cradle to the plane and they worked a treat
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0143.JPG)
wind was a bit strong today it was blowing a good 20mph but we gave it a try any way :D with using the rudder only made the plane wallow from side to side but after a few flights it got better or i got used to it :lol: think ailerons is the way to go :)
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0144.JPG)
this is my brother richard he flew the fling :D must say it was a good days craic :clap: :clap:
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here's a few more pictures from todays flying
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0145.JPG)
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0148.JPG)
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0151.JPG)
the bird of time fuselage was a little deeper than the albratross so we had to modifiy it a bit
(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0155.JPG)
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(http://www.gliderireland.net/forum/images/uploads/andrew%20wallace/IMG_0157.JPG)
three happy boys :D :D
the wind was a good bit lighter today and believe it or not the bird of time was easier to take up than the smaller fling :clap:
no thermals but we must of had about ten flights the shortest being the bullet :lol: :lol
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Andrew,
Glad to see you had great success, it's always fun to try new things in the RC world. Great pictures, it's fun to have a group as excited about trying things as you are.
Sorry that I haven't responded sooner, I have taken up my new job and just returned from my first shift. It takes approximately 8 hours one way with fuel stops to get to and from my work site. I'm hoping to get a lap top ready and going by the time I leave for my next 8 day stint so I can stay in better touch with my wife (skype) and kids and to see whats going on with the forums. Thanks for sharing. Once I get settled and learn what I need to for the job, I'm hoping to take some building projects with me so I have something to do during my off hours. I'm putting together a balsa order now in preparation for that. I'll be in touch congratulations on your success. Tracy :clap: :clap: :clap: :clap: :clap:
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hi tracy
i'm gonna make a new aileron wing out of foam for the plane i'll keep you posted
hope all goes well with the new job
i'm waiting on new glasses before i start the wing 8) lol