The CyberQuad
- Thread starter Cyberdactyl
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Cyberdactyl
Misfit Multirotor Monkey
It flies really nice and stable, I like it! It looks really cool how close together everything is. It's like a flying ball
When I fly it, especially looking at it from the rear, which I do alot,
and its stark performance difference from my David W tri and my medium size CyberHex, along with its wide stance, and low motor position and its triangular middle top. . . reminds me of a Formula 1 car. . . 
Cyberdactyl
Misfit Multirotor Monkey
Was curious and tried 2200 4S on the little guy. . .
Flies pretty well, don't want to push it though, it comes in a tad over 800g and I don't want to stress/overheat the Afroslims which I'm now very happy.
I put some rubber tipped bamboo skewer supports (yellow arrows) to minimize any top-heavy wobbling. I don't think it was necessary.
The grass was totally dew covered and the KK2 sits down in it, that's why the bucket and plywood. . .
Flies pretty well, don't want to push it though, it comes in a tad over 800g and I don't want to stress/overheat the Afroslims which I'm now very happy.
I put some rubber tipped bamboo skewer supports (yellow arrows) to minimize any top-heavy wobbling. I don't think it was necessary.
The grass was totally dew covered and the KK2 sits down in it, that's why the bucket and plywood. . .
You totally stuck the landing. :applause:
Pretty good punchout for an 800 gram copter too. What is flight time with that 4S 2200 like?
Pretty good punchout for an 800 gram copter too. What is flight time with that 4S 2200 like?
Cyberdactyl
Misfit Multirotor Monkey
I don't know, I didn't run it all way down. I'm too worried about scorching the ESCs. Although, I'm probably overly paranoid, because it still hovers at around 40%.
Also, I tried the GoPro again, but the video is crappy. It's smooth, but soon as I move forward, it's looking at the ground. I think I'm going to make a foam wedge to go between it and the vertical flat snout, so it will be tilted up 15-20 degrees.
Also, I tried the GoPro again, but the video is crappy. It's smooth, but soon as I move forward, it's looking at the ground. I think I'm going to make a foam wedge to go between it and the vertical flat snout, so it will be tilted up 15-20 degrees.
Cyberdactyl
Misfit Multirotor Monkey
Finally Bruce and some others are seeing the light.
https://www.youtube.com/watch?v=pOi1jFRoVvI&t=6m24s
https://www.youtube.com/watch?v=pOi1jFRoVvI&t=6m24s
Cyberdactyl
Misfit Multirotor Monkey
Finished cutting 3mm booms early in the week and replacing the 2mm. Exactly the same, but thicker. I must say, you have to look close to see the difference, but adding 1mm more thickness really stiffened it up nicely. The floating cage was getting a bit of shutter on hard throttle with 4S, now it's gone. I also notice much less prop noise. I also rounded the tips where the booms rest on the ground slightly to reduce the chance of chipping.
Cyberdactyl
Misfit Multirotor Monkey
Another vertical boom convert.
https://www.kickstarter.com/projects/137596013/x-plusone-your-ultimate-hover-speed-aerial-camera
https://www.kickstarter.com/projects/137596013/x-plusone-your-ultimate-hover-speed-aerial-camera
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that one would definitely need a camera that's hooked up to a servo and the pitch stab control in reverse to see anything though
it's cool but, part of me hopes that's not the direction quad racing will take. it seems a bit to "pro". but then again, I suppose you could have a separate pro league as well.
it's cool but, part of me hopes that's not the direction quad racing will take. it seems a bit to "pro". but then again, I suppose you could have a separate pro league as well.
Cyberdactyl
Misfit Multirotor Monkey
I suspect designs for 150mph+ will be showing up 'in real life' soon. There should be no reason a quad should not at least equal the fastest prop or EDF RC plane.
zenguerilla
Senior Member
I think those would be X config, unless they are in the middle of a roll, which would be traditional yaw or a yaw-roll (?) potentially a multi rotor inspired sushi. But, since the planform, or outline of an object viewed from above, would be the same, the thrust aspect should be the same for 'x' or '+'.
The idea seems to be that in hover loss is minimized, in slow movement vertical thrust is more important and perpendicular arms, etc. begin to angle, in faster movement thrust efficiency is still important and arms, etc. are angled more, (where at 45° vertical or horizontal flat arms produce the same amount of forward drag), and at top speed/acro directional movement and vertical thrust align for maximum efficiency in both.
What that begins to open up is a different type of long distance forward flight (etc.) where pitch remains pitch, roll is more like rudder, and yaw/rudder becomes roll. The kickstarter pointed out seems to make use of possibly increasing range and efficiency with wing-like flight, though would cut down on slower hover-based flight and efficiency, more set up and intended for, almost necessarily, fast forward flight, i.e. definitely requiring more space.
One thing I begin to wonder about is, is there somewhat of an idea that the velocity of air directly over the arm where it is directly under the prop displace the air resistance that would be encountered in forward or lateral flight nearly all together?
The idea seems to be that in hover loss is minimized, in slow movement vertical thrust is more important and perpendicular arms, etc. begin to angle, in faster movement thrust efficiency is still important and arms, etc. are angled more, (where at 45° vertical or horizontal flat arms produce the same amount of forward drag), and at top speed/acro directional movement and vertical thrust align for maximum efficiency in both.
What that begins to open up is a different type of long distance forward flight (etc.) where pitch remains pitch, roll is more like rudder, and yaw/rudder becomes roll. The kickstarter pointed out seems to make use of possibly increasing range and efficiency with wing-like flight, though would cut down on slower hover-based flight and efficiency, more set up and intended for, almost necessarily, fast forward flight, i.e. definitely requiring more space.
One thing I begin to wonder about is, is there somewhat of an idea that the velocity of air directly over the arm where it is directly under the prop displace the air resistance that would be encountered in forward or lateral flight nearly all together?
Cyberdactyl
Misfit Multirotor Monkey
One idea that occurred to me a while ago would be to have a free moving foil wrapping around carbon fiber booms. Sort of like a weather vane, free to move into the flow of least resistance.
There's three issues as far as I can see.
-First, is the weight penalty worth the added efficiency? If the 'foil' could be constructed to be little more than say, a very thin (~0.75mm) Kydex wrap, then probably.
-Second, can the trailing edge be stabilized to not flutter around the foil's rotation point during thrust column velocity changes without adding additional mass.
-And third, an option, can the foil be designed to "lock" at various rotation points to provide lift at any particular z-axis tilt without an additional mass penalty? This would also buy only a small amount of additional lift and flight time unless substantial speeds could be achieved, such as Warthox is able to do when he places the z-axis very close to perpendicular to god's g for a substantial amount of time.
There's three issues as far as I can see.
-First, is the weight penalty worth the added efficiency? If the 'foil' could be constructed to be little more than say, a very thin (~0.75mm) Kydex wrap, then probably.
-Second, can the trailing edge be stabilized to not flutter around the foil's rotation point during thrust column velocity changes without adding additional mass.
-And third, an option, can the foil be designed to "lock" at various rotation points to provide lift at any particular z-axis tilt without an additional mass penalty? This would also buy only a small amount of additional lift and flight time unless substantial speeds could be achieved, such as Warthox is able to do when he places the z-axis very close to perpendicular to god's g for a substantial amount of time.
I suspect designs for 150mph+ will be showing up 'in real life' soon. There should be no reason a quad should not at least equal the fastest prop or EDF RC plane.
This image is getting really close to an X-Wing Fighter.
Thurmond
zenguerilla
Senior Member
Careful not to foil your design.
VTOL, wing-enhanced, and vertical thrust efficient multi rotors may share commonality but eventually diverge in design. Many VTOL use bicopter and tricopter layout which seem to work well with the pivoting thrust angle.
And then there's this.
At least two things that vertical plate design exhibits, common to all multi rotor, is increased vertical thrust efficiency and increased vertical impact strength. One thing I saw your arm design progress towards but am not sure it was suggested would be a PDB designed plate boom or arm.
With three leads and pads at either end, esc's could also be placed at either end, utilizing only two or all three of the integrated pads. This too, not only could apply to all multi rotor in general, but to vertical and/or horizontal plate arms alike.
VTOL, wing-enhanced, and vertical thrust efficient multi rotors may share commonality but eventually diverge in design. Many VTOL use bicopter and tricopter layout which seem to work well with the pivoting thrust angle.
And then there's this.
At least two things that vertical plate design exhibits, common to all multi rotor, is increased vertical thrust efficiency and increased vertical impact strength. One thing I saw your arm design progress towards but am not sure it was suggested would be a PDB designed plate boom or arm.
With three leads and pads at either end, esc's could also be placed at either end, utilizing only two or all three of the integrated pads. This too, not only could apply to all multi rotor in general, but to vertical and/or horizontal plate arms alike.
Cyberdactyl
Misfit Multirotor Monkey
This image is getting really close to an X-Wing Fighter.
Thurmond
Yikes!
Now that you mention it, it does somewhat. Certainly not my intention. I suppose it's because I have the central hub rather large to contain everything including the camera and Vtx, everything but the motors, with an extra large battery capacity for 'relatively' longer flights of maybe 10 minutes, if lucky, at around 160mph. Also heat sink strips on the trailing tip for the ESCs. I haven't worked out the math for powering something like four Dr. Mad EDFs units with thrust in the ball park of 1.2kg @ 4S ~3000KV units.
Also, getting up in those speeds calls for the strip technique to get the wiring to bridge across the thrust column, maybe even wider and thinner. And of course, there's the challenge of not desyncing such high kv motors running 4S.
But it probably won't happen. It would be a rather expensive build for something I would probably crash trying to do FPV.
the X wing came to my mind too.. but then i have been in this star wars mood this week.. i think i will try to watch the phantom menace today, i need to elevate my legs they are swelling up bad... i just can not get into the last three films.. but i feel i want to get them done before the new star wars comes out.. if it was anything like when i was a boy and starwars came out. i was absolute fascinated with everything related to space and flight many good day dreams of taking on Vader i had . I assume my nephews will too.
i will have to figure out how to do up a chuck glider in the shape of one of the starwars ships.
does anyone else remember the plastic dark Vader punching bag? i was like 6 i think when i got one for either my birthday or Christmas i do not remember which it was now. i remember it being taller than me.. you punched it, then dark Vader would go to the ground, with sand in the base, it would come back up and if you were not ready to hit Vader again, he would thump you. good clean fun, beat up dark Vader and help the rebels win!!
chris.
. I assume my nephews will too.i will have to figure out how to do up a chuck glider in the shape of one of the starwars ships.
does anyone else remember the plastic dark Vader punching bag? i was like 6 i think when i got one for either my birthday or Christmas i do not remember which it was now. i remember it being taller than me.. you punched it, then dark Vader would go to the ground, with sand in the base, it would come back up and if you were not ready to hit Vader again, he would thump you. good clean fun, beat up dark Vader and help the rebels win!!
chris.
Cyberdactyl
Misfit Multirotor Monkey
Was flying today through some tight branches and heard brap-brap-brap-brap-brap-brap off in the distance. Sort of like putting playing cards on your bike for the spokes to brush when you were a kid, but way faster. Brought my mini back and found this. . .
nice, its in its camo atire, hiding for that special shot.. its just being trendy. what kind of props are you using? they look like they took the crash no problem. the gemfan i have sure take a crash but i guess they are not very good tho.. but for now ill keep using them till iv given a reason not too.
chris.
chris.
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