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Old Jan 25, 2005, 12:42 PM
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Flap chap
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Quad-winged pager flyer


Here's a model that i have in construction. Its loosely based on an Armstrong-Whitworth FK.10 which had 4 wings.
I haven't finished the fuselage yet and i have yet to cover the last two wings or tail feathers. I did a test glide in its current state, (with no covered tail surfaces) and it flew very stable, despite the extra drag of this configuration.

The frame should weigh no more than 2.5 grams and expecting 2.2 grams. AUW could be 13 grams approx with one 145 mA cells (its all i have).
I have plans to add an extra removable wing if needed to reduce wing loading for slower flight. I hope its OK!
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Old Jan 25, 2005, 12:46 PM
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The ceiling is the limit!
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Wow that looks good. What did you cover it with?
Old Jan 25, 2005, 01:08 PM
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Good old food bags. Not the lightest of materials, but the lightest 'free' material you can find. I will use about 0.5 grams on this model (so maybe 2.2 gram airframe/wings)
Old Jan 25, 2005, 01:13 PM
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The ceiling is the limit!
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What did you use to stick it to the frame?
Old Jan 25, 2005, 01:23 PM
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in persuit of low wing loading
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Looks good. Hope it flies well. Nice to see all those reference tables taped to your wall.

Gordon
Old Jan 25, 2005, 01:34 PM
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Always come in handy sir !
Micromad, i used a gluestick applied to the frame, then applied the covering and used some more glue underneath the sticks so the overlap could be tacked on. Cheers,




James,
Old Jan 25, 2005, 02:30 PM
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Quote:
Originally Posted by snakeX2
Always come in handy sir !
Micromad, i used a gluestick applied to the frame, then applied the covering and used some more glue underneath the sticks so the overlap could be tacked on. Cheers,




James,
snakeX2, looks great.

Please forgive my ignorance but what is a gluestick, what glue is it.
I had the same idea using these bags as i have no source for mylar but CA would not slick to it!


Thanks.
Old Jan 25, 2005, 03:40 PM
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You can get glue sticks here:http://www.whsmith.co.uk/WHS/Go.asp?...9810826&DB=320
Thanks James for the info


Alex
Old Jan 25, 2005, 04:06 PM
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using Pritt on this??? this stuf cant even stick 2 pieces of paper together

Thanks for the info.
Old Jan 25, 2005, 04:29 PM
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Now I really wonder who orders Pritt over the internet, unless they live in an exceptionally remote area of the world.
Old Jan 25, 2005, 04:42 PM
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Whacky, with the correct aplied amount of glue (pritt stick) you should get a desent hold but only enough to keep it stuck weakly, thats why you should wrap it around and stuck again. WHS sell the official pritt stick, which is no better than most other types.
Old Jan 27, 2005, 11:19 AM
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Hi guys. Construction is nearing end, but i have a little problem about the undercarridge; I want to install some but i want to keep the weight to minimal. What light weight undercarridge could i make, with wheels that could weigh next to nothing? I have CF but the weight of mine seem to come at 0.2/0.3 grams. I also expect hard landings and CF is probably a must but the fuse may suffer damge. I have another idea to have a separate lightweight cart that the quad rests on, the cart it self will travel along the 'runway' with the model and the model will take off without it. Of course i am going to try both. Cheers anyone for help.
Old Jan 27, 2005, 11:58 AM
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Try half moon hoops of carbon fiber. .010 to .020 max.



Greg
Old Jan 28, 2005, 01:37 AM
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Nice looking plane so far.
Do you have any links to photos of the Armstrong-Whitworth FK.10?

Thanks
Billy
Old Jan 28, 2005, 09:54 AM
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Hi SnakeX2,

I have found something that will stick the Foodbags to te wood and is realy powerfull is also from Pritt, it is a small roller with doublesided tape in it.
It is used for photos, paper, glass etc. i tried a piece of balsa and a litte foodbag and it sticks like hell, it's also posible to take it off and put it back on (the bag) to correct it or to replace it when damaged.

Greats Whacky.


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