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Sterling101
Well, I need to redesign the wing I think.

Too much camber means it just doesn't cut through the air. That and after about the 30th launch I folded the wings up

Good learning curve though so it's on to revision 3 I suppose!
Whoever said nothing is impossible had obviously never tried slamming a revolving door...
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Wildthing
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Well, I need to redesign the wing I think.

Too much camber means it just doesn't cut through the air. That and after about the 30th launch I folded the wings up

Good learning curve though so it's on to revision 3 I suppose!

That's to bad, I am sure you will come up with something that works.
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Sterling101
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That's to bad, I am sure you will come up with something that works.

Plenty of info from the flights tonight - and a sore shoulder too!! Definitely need to work on the technique quite a bit. Might even be tempted to break out my bungee for launch testing...

Have got a nice 8mm square carbon tube turned up today though - remove some of the flex I was seeing with the wooden boom
Whoever said nothing is impossible had obviously never tried slamming a revolving door...
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Sterling101
Quick video of some of the flight attempts tonight. Stopped filming after a bit but the last few were about like the last one on the video - except for the very last one where I turned it into a flappy bird on launch

Whoever said nothing is impossible had obviously never tried slamming a revolving door...
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Wildthing
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Quick video of some of the flight attempts tonight. Stopped filming after a bit but the last few were about like the last one on the video - except for the very last one where I turned it into a flappy bird on launch


That's like riding a pedal bike, counterproductive. Put a motor on it.
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FED50H
I bought a budget one awhile back....I hope yours works better...it was really cool, but never performed like I had hoped...the nice ones are plenty expensive...but practically defy gravity....
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Sterling101
After a bit more thinking and deciding that a swappable system might work I set about throwing it together this morning.

Tail I've done using 1/16th balsa as reading up on various sites that seems to be a popular choice and I'd got some hanging around.
So, using the square carbon boom I printed some adaptors that slide down the boom and I have a servo screw holding it in position.

Both tail pieces came out nice and light though which is a bonus.

IMG_20180429_195335_866.jpg 

IMG_20180429_195348_452.jpg 

After some stunning work done on this thread I found (https://www.rcgroups.com/forums/showthread.php?1999696-Dollar-foam-DLG) and more specifically the last few pages I decided to have a go with some foamboard wings. The nearest we get to dollar tree foam over here is slightly heavier but essentially the same stuff, just more like $6 a sheet!
So, armed with some of that stuff I knocked the wings up as I normally would, but I decided to try a KF2 airfoil which I laid down some 5mm hobby king foam for. There's been some test work with the KF airfoils on DLG's and they seem to work well enough so it was worth it for a bit of fun.
The wings use a dihedral brace that supports the wing halves and there's a healthy dollop of hot glue in the centre. Single strip of flat carbon on each wing and and some rather bright tape on the leading edge as it's hard to sand the paper covered foam board it seems and it evens it up a bit.

I've used the same servo's as before but gone for a smaller nose pod this time but even so it still seems to have come out rather tail heavy so I've had to use the 2S 850mah battery again shoved into the nose.

IMG_20180429_200150_575.jpg 

AUW has come to about 345g so not as light as I wanted, but it will do for test purposes at least.

Will also be building a flat depron wing and I'm going to try a folded wing too out of depron to see if I can bring the weight down a bit more. Great thing about the swappable concept is I just unscrew one, pop it off, pop the new one on and screw it back down again. So for testing different wings etc it's ideal.

Now we play the "waiting on work and weather" game for testing it again...
Whoever said nothing is impossible had obviously never tried slamming a revolving door...
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bogusbandit56
Quote:
After a bit more thinking and deciding that a swappable system might work I set about throwing it together this morning.

Tail I've done using 1/16th balsa as reading up on various sites that seems to be a popular choice and I'd got some hanging around.
So, using the square carbon boom I printed some adaptors that slide down the boom and I have a servo screw holding it in position.

Both tail pieces came out nice and light though which is a bonus.

[ATTACH=full]54964[/ATTACH]

[ATTACH=full]54965[/ATTACH]

After some stunning work done on this thread I found (https://www.rcgroups.com/forums/showthread.php?1999696-Dollar-foam-DLG) and more specifically the last few pages I decided to have a go with some foamboard wings. The nearest we get to dollar tree foam over here is slightly heavier but essentially the same stuff, just more like $6 a sheet!
So, armed with some of that stuff I knocked the wings up as I normally would, but I decided to try a KF2 airfoil which I laid down some 5mm hobby king foam for. There's been some test work with the KF airfoils on DLG's and they seem to work well enough so it was worth it for a bit of fun.
The wings use a dihedral brace that supports the wing halves and there's a healthy dollop of hot glue in the centre. Single strip of flat carbon on each wing and and some rather bright tape on the leading edge as it's hard to sand the paper covered foam board it seems and it evens it up a bit.

I've used the same servo's as before but gone for a smaller nose pod this time but even so it still seems to have come out rather tail heavy so I've had to use the 2S 850mah battery again shoved into the nose.

[ATTACH=full]54966[/ATTACH]

AUW has come to about 345g so not as light as I wanted, but it will do for test purposes at least.

Will also be building a flat depron wing and I'm going to try a folded wing too out of depron to see if I can bring the weight down a bit more. Great thing about the swappable concept is I just unscrew one, pop it off, pop the new one on and screw it back down again. So for testing different wings etc it's ideal.

Now we play the "waiting on work and weather" game for testing it again...

Have you considered just rudder and elevator? Ailerons provide quite a healthy amount of drag.
Having dihedral will enable to use rudders for turning and some folk prefer that to ailerons for gliding.
If you don`t like that idea try to make the ailerons as small as possible.
Hows the shoulder, better I hope?
Wot, no Depron?
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Sterling101
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Have you considered just rudder and elevator? Ailerons provide quite a healthy amount of drag.
Having dihedral will enable to use rudders for turning and some folk prefer that to ailerons for gliding.
If you don`t like that idea try to make the ailerons as small as possible.
Hows the shoulder, better I hope?

I had that on my first one but the rudder just hasn't got the authority to hold the roll when the wind catches it.

I've got some smaller servo's on the way so hopefully I can start to shave off the weight with those and a few little extra tweaks like a sprung elevator so I can use fishing line instead of heavy push rod.

All depron wing will bring the weight down quite a bit though I think...
Whoever said nothing is impossible had obviously never tried slamming a revolving door...
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Wildthing
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I had that on my first one but the rudder just hasn't got the authority to hold the roll when the wind catches it.

I've got some smaller servo's on the way so hopefully I can start to shave off the weight with those and a few little extra tweaks like a sprung elevator so I can use fishing line instead of heavy push rod.

All depron wing will bring the weight down quite a bit though I think...

What is this "sprung elevator" ?
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Sterling101
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What is this "sprung elevator" ?

It's a piece of spring wire that holds the elevator in the up position and you only then have to pull the elevator to go down which can be done with fishing line.
Much lighter than a 1mm control rod at that length too!
Here's a video of it...

Whoever said nothing is impossible had obviously never tried slamming a revolving door...
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Wildthing
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It's a piece of spring wire that holds the elevator in the up position and you only then have to pull the elevator to go down which can be done with fishing line.
Much lighter than a 1mm control rod at that length too!
Here's a video of it...


I thought so
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