lordmerren

Around 16 years ago, I built this cradle to piggyback my Sophisticated Lady, but it has become lost over the years. I would like to rebuild but no longer have the information either. Would anyone have plans / instructions for making this type of cradle, or similar.


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Lm

OzMo

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This might help. also watch eba^. I found one there a while back it will soon ride atop my Telemaster 2000. You want the glider to sit with a little down in comparison with the power plane.

Tinkrerpilot

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Check out #8 and #9. If you print out the side pattern in post #9, it will come out to about right size on 8 1/2 X 11 paper. The rest is pretty easy. If you need more info. Let me know.


http://www.rcuniverse.com/forum/m_35...tm.htm#3566417

also check out this website from the poboys the brownknows submitted. Gives some ideas on how to attach the glider to the tug without rubberbands,

http://www.poboys.org/framepage.asp?frame=tips/ glider 0.htm

Good luck! Show some pics when your done..........


tink

qwerty3

How is this setup for flight - for the powered plane? Does it act much differently? I've got a Spirit 100, and was thinking about launching it off an Aerostar 40 - but maybe that'd be too small a plane? The Aerostar isn't built yet - I plan to do some customizing of it - add flaps, barndoor ailerons, make the wing bolt-mounted. I've got a strong .50 to put on the Aerostar. I'd like to make a custom release on the launch plane, so that any standard sailplane towhook would fit / work. But, maybe this is more trouble than it's worth. Better yet, make the launch plane electric, so I can fly at my club field on 'no engine' days.

Tall Paul

I did it this way...
Be sure there's positive incidence between the carrier and the glider, otherwise the glider may not fly off when released.
It took a little bit of filing and fiddling to get the latch to work.

lordmerren

Thanks very much guys. That is a tremendous help. I couldn't even remember how I made the release mechanism, but now it is all coming back. I will certainly post pictures when I am done, Tink. Thanks again.


Lm

Tinkrerpilot

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qwerty3 take a look at the poboys website and some of the othr pictures here. You will get the idea.
Aerostar .40 maybe a little small. But is certainly doable as a launch plane. You will see more of the Sr. Telemasters and Sr. Kadets being used. Aerostar could be used although on the small side.

http://www.poboys.org/

Tinkrerpilot

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Here are some pics of the one my flying buddy just got thru building. It is mounted on the back of a electric Sr. Telemaster.
The plane is set-up for both piggy back launcher and aero tow. One wicked airplane.

tink

Tinkrerpilot

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Some pictures that I recently came across. Just aplpy a search to glider launcher , piggyback cradle.
Will post more info on the Sr. Tele later. Have fun!!!!

iflytailies

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here is how we did it: http://www.rcgroups.com/forums/showthread.php?t=861582

Tinkrerpilot

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Guess it is all a matter of which one you prefer. They all work just. Some are just more refined then others. But the idea and the concept is there. Design one and go for it. Its all in fun of this great hobby we have. Have fun!!!!

lordmerren

Thanks again tink, I will keep ypu posted as things develop.


Lm

Tinkrerpilot

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qwerty3

How is it set up? Thats the easy part. Tha carrier set on top of the wing and is attached in some form or another to the launch plane with screws, bolts, rubber bands, so as to make if a fixture. The launcher has a servo set into it that acts as release. The release mechanism is as simply as a nose gear block to act as the attach point for the straps to hold the glider on. Straps are either little bunggie cords or rubber bands, that are attached to the back of the carrier, over the top of the wing of the glider and down to the front of the carrier.The hook is opened and the bands inserted into the release point, then closed. The release is a unused channel on the radio, such as a gear switch, flap switch. With everything ready. Launch plane gets in the air, climb to altitude, throttle back, check with the glider pilot, flip the switch, glider releases, planes separrate. Have fun...........

Launchers vary in styles and shapes, but all do the same function. Get the glider to altitude safely. Enjoy this great hobby we have.

Regards

nanavion46

Tinkrerpilot,

The launch article and pictures you posted looks like it came from RCM Magazine. Since I have all the RCM mags except October, 1965, what issue did the article come from? I would like to look up the article. Thanks.

nanavion46

Tinkrerpilot

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nanavion46

I have no idea where this came from. Just one of those browsing through the threads and came across it. SOurce says it is from the Dec. '93 Jan. '94 issues of R/C Modeler. Article is called "Lets Play Piggyback". There is another source in the June 2002 issue of Nodel Aviation that plays along with the rest. Hope this helps.


tink

mikez64

Are you still looking for one?

OzMo

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Here is how mine turned out. I embeded two music wire prongs in the wing to hold the front bar and made a gutter pipe scap rear holder that shares the wing hold down bolts.

Tinkrerpilot

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Great job OzMo. Looks very nice. Wil be waiting for a flight report.

OzMo

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35 mph gusts today and I was working soooo we will have to wait for a weather break for the maiden. Time to cover the BBXL. I just cut some patterns for the covering.

Tinkrerpilot

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OzMo Post a pic when you got her all done. Always interested in patterns on big birds.

vraciu19

Here are some pics of our piggyback system in South Africa. It is a Ventus 2c from Airworld (wingspan 3.6m) on a scratchbuild aerie with a wingspan of 3.5m and powered by two OS BGX's.

Paul

Tinkrerpilot

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vraciu19

Very nice setup. Never thought of a twin in use as a launch vehicle. Looks like it works for you guys. Thanks for posting the pics.

jumpstart55

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I just read the posts on the piggy back launcher and I have made two of them. I use my Sig Senior (bashed with flaps and aeilerons and a pull pull tail dragger.) I have a Saito .80 four stroke in it and have no problem with launches. It has worked great except in windy conditions as the glider tips up on turns. This pulled the wing off the Senior and it became a lawn dart! It is repaired and still does a great job. I plan on putting braces on the wing of the Senior to support the glider wings and make them adjustable to allow for the different height of the gliders we launch. This will give added support in breezy conditions.

StickKiller

I've been looking for the exact same thing! Are these still available to buy or is everyone making their own?

iflytailies

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making their own