Hi,
I thought I would try to make the H-quad with folding possibilities for easy transport.
Here is the start of the project.
First a made a frame with 15x15mm wood sticks. The frame is 80x420mm.
I used screws and wood glue in the corners.
I made the bottom support for the arms in Aluminium 80x30mm, 1.5mm thick.
I screwed this to each short side of the frame. 15mm off the plat outside off the frame.
Next I made the top plate and the top support for the arms. Th top plate was also made from aluminium 450x80mm thickens 0,8mm. On the top plate I attached the upper support made from wood sticks 15x15mm length 114mm.
Then I mounted the top plat to the frame.
Then I made 4 arms, wood sticks 15x15mm length 230mm. I placed the arms between the lower and upper support. And drilled 3mm holes in the upper support and the arms. I placed 3mm bolts in the holes 35mm length.
Under you see the arms mounted with the 3mm bolts.
As you ca see there is a hole and a gap between the arms. Here am I going to use a 4mm bolt with a wing nut. To tighten the upper and lower support for the arms, before flight. This will secure the arms during flight.
And finally the frame with arms mounted, showing flight position and transport position.
I also made a drawing in Google Sketchup. See under.
Under the Quad I am going to use a Aluminium mesh, which also will give good ventilation for the ESC.
So now I am only waiting for the electronics and motors to do the rest of the H-Quad.
The H-Quad is coming together. Her are some more pictures. One from top and one from bottom. I also attached balls in the corner. Green is front and red is back for easier orientation in the air. They also work as landing "skids"
Just waiting for the CW and CCW propeller now.
Finally I got the propellers, so I made it flight ready. See below last pictures with propeller mounted and a flight video from youtube.
I was hesitating on few more things :
- Something to carry it like a suitcase
- Something to attach it to a bagpack
- Having the center plate larger than the frame and a bit thicker so when the arms fold the motor are protected in it.
- A way to set the prop inside when i'm moving
- A way to set the Tx inside, but that might be WAY too big :)
Have you consider some of the options and found a flaw in it ?
(i'm asking so i won't try if so ^^)
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I would also like a construction that would protect the propellers, but did not find any smart solution. I think it would be to big and heavy.
The TX and KK board can be protected by a plastic cover. Or you could make the side bars larger so that the room between the top plate and bottom plate become a little larger. There are some space between the 4 ESC. Maybe make the H-Quad a little longer to get more room between the ESC.
But I think mine is already a little on the heavy side. But you could use carbon instead to make it lighter. I will see when I get my propeller so I can test it. So maybe I have to modify it and make a version 2. But that is the fun off the hobby, to try, and make better solution after some experience.
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Thank you, also fun to try new approach to thing.
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If the aluminium gives me trouble, it will be easy to change it to ply.
I had the aluminium lying around so thought I will give it a try.
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Thank you for info. But I think maybe the postage for this to Norway would be expensive? Butt absolutely a good materiel to use for this type of build.
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[URL=http://s185.photobucket.com/albums/x19/_wbg_/Multi/?action=view¤t=20120723_213658.jpg][IMG]http://i185.photobucket.com/albums/x19/_wbg_/Multi/th_20120723_213658.jpg[/IMG][/URL]
[URL=http://s185.photobucket.com/albums/x19/_wbg_/Multi/?action=view¤t=20120723_213637.jpg][IMG]http://i185.photobucket.com/albums/x19/_wbg_/Multi/th_20120723_213637.jpg[/IMG][/URL]
I think your way of attaching the arms is stronger than mine.
I'm away from home working for ten days, and cant wait to get home and finish my new H-quad...
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http://s185.photobucket.com/albums/x19/_wbg_/Multi/
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Nice design, your is much less heavy than mine I think.
I just hope both design will fly nice, and work as thought.
Looking forward to see your finished product and how it works.
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Ser du er fra Norge. Har et lignende prosjekt på gang. Har du brukt PN fra ESC til motor, funker det OK..? Har du opplevd problemer med dele forsendelser fra HK...? Venter sårt på deler fra HK, men det drar ut :(
Ser veldig bra ut.. lykke til :)
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Har brukt vanlig kabel fra Motor til ESC på tricopteret mitt også. Ikke hatt noen problemer med det. Er bare å passe på å ha rett kvadrat. Her har jeg brukt 1,5mm2, tatt og splittet en gummikabel. Den er ganske myk og tøyelig. Kabel fra Biltema.
Har aldri delt opp en sending fra HK. Har kun registrert ordre når jeg ser det er på lager. Frakt pr. gram er nesten den samme for små og store forsendelser.
Ja er litt håpløs med deler på lager fra HK.
Hva slags prosjekt driver du med?
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Thanks for your comments. Much appreciated.
I know maybe aluminium is not the best material to use, but I had that lying around. And was also looking for an alternative look.
And maybe aluminium is easier to fix after a crash? Just bend it back? I'm not going to use it for FPV, so I don't think the little extra weight will matter? Maybe make it a lit more stable? I'm planing to cover the aluminium with clear packing tape, so I don't get any short cut. Also the KK board will be mounted on non conducting dampers, so I think I'm in the clear there? I hope the aluminium will not give me any trouble with the RX. Time will show.
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