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View Poll Results: Which quadrocopters and/or tricopters do you fly?
Aeroquad 209 7.21%
Alien Jump Jet 48 1.66%
Alien Saucer 34 1.17%
Draganflyer DF-IV 33 1.14%
Draganflyer DF-V TI 23 0.79%
Draganflyer Experimental Brushless (Spectrolutions) 39 1.35%
Draganflyer X6 32 1.10%
Quadpowered 236 8.15%
Microdrone 32 1.10%
Mikrokopter V1.0-ME 102 3.52%
Mikrokopter V1.0-ME with NAVI 193 6.66%
Mini-Mixer quadrocopter 29 1.00%
Mini-Mixer tricopter 27 0.93%
Self-build quadrocopter flight board/firmware 1,297 44.77%
Self-build tricopter flight board/firmware 702 24.23%
UAVP 73 2.52%
UAVP-NG 26 0.90%
UAVX 73 2.52%
Walkera UFO #4 32 1.10%
Walkera UFO #5 46 1.59%
Walkera UFO #8 39 1.35%
X-BL 31 1.07%
X-BL FunPilot 25 0.86%
X-BL Autopilot, ReasearchPilot, Hornet, Hummingbird, Falcon 14 0.48%
X-UFO 64 2.21%
Y-UFO LA Heli 24 0.83%
Y-UAVP 17 0.59%
Y-UAVX 29 1.00%
Multiple Choice Poll. Voters: 2897. You may not vote on this poll

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Old Jan 21, 2010, 12:33 PM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,418 Posts
Jürgen,
Vielen Dank für die Web-Seite. Der QC ist bereits in Teil 2 der Umfrage.
Cheers,
Jim
Quote:
Originally Posted by JUERGEN_ View Post
wurde etwa der QC-Copter vergessen ? ?
den gibt es auch schon seit ca. 2Jahre
- http://www.qc-copter.de -

die variante von "HCopter" - http://www.qc-copter.de/wiki/index.p...=TestFlug_X-19

jürgen
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Old Jan 21, 2010, 12:44 PM
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JUERGEN_'s Avatar
Deutschland
Joined Nov 2009
660 Posts
Quote:
Originally Posted by reverendrichie View Post
Now that has got the be the coolest VTOL I have seen to date. Wow!!!

ist eine interessante seite.
- http://www.qc-copter.de/wiki/index.php?title=Usercopter -



jürgen
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Old Feb 13, 2010, 07:36 PM
Night flier
United Kingdom, England, Bromyard
Joined Mar 2008
831 Posts
wow majorly interesting stuff goin on here.
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Old Feb 19, 2010, 10:42 PM
UFO addict
jk3n0bi's Avatar
Texas
Joined Jan 2009
932 Posts
Hey there JES!

Don't know if this one was posted, but it's one I found a few weeks ago in the mikrokopter forum. Its the nanocopter.

http://forum.mikrokopter.de/topic-13092-1.html
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Old Feb 20, 2010, 09:18 AM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,418 Posts
Thanks Jamie,
Added under quad projects along with Airbotix' Hexacopter too: http://www.rcgroups.com/forums/showthread.php?t=1054541

Micro Hexrotor UAV onboard Video - part 2 (6 min 46 sec)

Cheers,
Jim
Quote:
Originally Posted by jk3n0bi View Post
Hey there JES!

Don't know if this one was posted, but it's one I found a few weeks ago in the mikrokopter forum. Its the nanocopter.

http://forum.mikrokopter.de/topic-13092-1.html
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Old Feb 20, 2010, 05:51 PM
Registered User
rimshotcopter's Avatar
United States, CA, Los Angeles
Joined Aug 2009
11,662 Posts
Quote:
Originally Posted by jesolins View Post
Thanks Jamie,
Added under quad projects along with Airbotix' Hexacopter too: http://www.rcgroups.com/forums/showthread.php?t=1054541

Micro Hexrotor UAV onboard Video - part 2 (6 min 46 sec) Cheers,
Jim
You know, this is becoming just a little bit too spooky and Matrix for me. LOL
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Old Feb 20, 2010, 11:09 PM
UFO addict
jk3n0bi's Avatar
Texas
Joined Jan 2009
932 Posts
lol
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Old Mar 16, 2010, 02:25 PM
multi-rotor man
arrio's Avatar
USA, VA, Newport News
Joined Jan 2002
150 Posts
quad controller with stabilisation for collective pitch rotors

Been looking, but have not seen any development or offerings for controllers for quads or tri's with collective pitch rotors. I can do convention mixing with seperats gyros and such. But looking for some developed product to incorperate most of the equipment. I am not programing literate.
Anybody happen accross any info in this area?

Many thanks,

Alfred
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Old Mar 16, 2010, 03:17 PM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,418 Posts
Hi Alfred,
In the first post in the Mega Index of info links under quad projects you will find Redfox74's variable pitch quad build: http://www.rcgroups.com/forums/showthread.php?t=1187308
and
http://www.rcgroups.com/forums/showthread.php?t=1211064
Gerorge's Quadpowered board might be able to do variable pitch too, so you might inquire there. No one there has built one that way to-date. Here: http://www.rcgroups.com/forums/showt...ht=quadpowered
Cheers,
Jim
Quote:
Originally Posted by arrio View Post
Been looking, but have not seen any development or offerings for controllers for quads or tri's with collective pitch rotors. I can do convention mixing with seperats gyros and such. But looking for some developed product to incorperate most of the equipment. I am not programing literate.
Anybody happen accross any info in this area?

Many thanks,

Alfred
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Old Mar 16, 2010, 09:04 PM
multi-rotor man
arrio's Avatar
USA, VA, Newport News
Joined Jan 2002
150 Posts
jesolins. Thanks for the link pointers. The Quadpowered boards look promising. The others seem to have stalled with little success.
A friend and I are assembling a rather large airframe with approx 30" rotors, with collective pitch. Hope to post some pics and success stories soon.

Thanks again,

Alfred
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Old Mar 16, 2010, 09:22 PM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,418 Posts
Alfred,
Did you see the flight video he posted from yesterday in the second link above? I think Red first started posting his progress in February.
Looking forward to seeing your build!
Cheers,
Jim
Quote:
Originally Posted by arrio View Post
jesolins. Thanks for the link pointers. The Quadpowered boards look promising. The others seem to have stalled with little success.
A friend and I are assembling a rather large airframe with approx 30" rotors, with collective pitch. Hope to post some pics and success stories soon.
Thanks again,
Alfred
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Old Mar 16, 2010, 09:38 PM
multi-rotor man
arrio's Avatar
USA, VA, Newport News
Joined Jan 2002
150 Posts
That video did show good stability for the short hop it made. However the project seems to be a modification to another opensource(?) board, and a colaboration. It would require some amount of programing knowledge, of which I have none.

Thanks,

Alfred
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Old Mar 17, 2010, 05:53 AM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
14,418 Posts
Alfred,
The Quadpowered board would be a good choice for you then. George has been trying to find someone interested in using his board with variable pitch props/rotors. Go for it!
...
Cheers,
Jim
Quote:
Originally Posted by arrio View Post
That video did show good stability for the short hop it made. However the project seems to be a modification to another opensource(?) board, and a colaboration. It would require some amount of programing knowledge, of which I have none.

Thanks,

Alfred
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Old Mar 17, 2010, 06:04 AM
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United States, CA, Los Angeles
Joined Aug 2009
11,662 Posts
Quote:
Originally Posted by jesolins View Post
Alfred,
The Quadpowered board would be a good choice for you then. George has been trying to find someone interested in using his board with variable pitch props/rotors. Go for it!
...
Cheers,
Jim
My brain is working overtime, I wonder if using a coaxial bladed system and varying the speed between blades would have the same effect as a variable pitch prop system? Hmmm?
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Old Mar 19, 2010, 10:11 AM
Registered User
Joined Jan 2009
461 Posts
Quote:
Originally Posted by reverendrichie View Post
My brain is working overtime, I wonder if using a coaxial bladed system and varying the speed between blades would have the same effect as a variable pitch prop system? Hmmm?
reverendrichie,

I'm not sure exactly what you're getting at. There are a few multirotor vehicles out there that employ two co-axial rotors per arm (such as this one http://www.draganfly.com/uav-helicop...pecifications/).

Collective pitch results in a much quicker application of thrust than increasing the rotor speed. Due to the combination of the rotor inertia and the time it takes for the flow to accelerate, there is a significant delay in changing the thrust in a RPM-controlled system. Also, thrust vs collective pitch is a linear function, whereas thrust vs RPM is a quadratic function.

- Roy
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