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Old Mar 02, 2010, 09:06 PM
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Is there a working quad with 3 gyros and 3 v-tails?

HI everyone, I have been reading a lot of forums searching for anyone that tried bulidng a quad with plain gyros and v-tails but havent seen anything.. I am asking if it will work or should I forget it? do I need a board to fly or can I go by gyros? I know that gyros arent sensors... but what would it be like.

I have only seen a diagram here on RCG but couldnt find its owner or designer

http://www.rcgroups.com/forums/attac...mentid=2305808

Kalle
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Old Mar 03, 2010, 06:16 AM
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Denmark, Capital Region of Denmark, CPH
Joined Mar 2006
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Post #60

http://www.rcgroups.com/forums/showt...96#post4874496

http://video.google.com/videoplay?do...76232576090493

Oldies but goodies.
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Old Mar 03, 2010, 06:43 AM
Bricks don't glide !
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Joined Mar 2008
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Simple Quad

Heres a link to one that works.
http://www.rcgroups.com/forums/showt...03#post6596903

This is an interesting Quad. Uses two v-tail mixers and EDFs.
http://www.rcgroups.com/forums/showthread.php?t=732586
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Old Mar 03, 2010, 07:45 AM
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thank you so much guys
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Old Mar 04, 2010, 08:46 AM
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so how are these compared to board based quads, lets just leave the highly expensive boards that has gps, etc and compare to relatively cheap boards(if there are any)?
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Old Mar 13, 2010, 01:49 PM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
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The gyro only based quads will fly fairly well, but unlike the better (and much more expensive) firmware based boards there is no self-leveling, not to mention altitude hold with a barometer and heading-hold with at compass, or the possibility of a GPS. There might be a possibility to add the $107 Flymentor to get some pilot self-level assist, but the FM's camera hover hold is only good to 9ft. The good news is the demonstrated tricopter and quad successes using the $13 HK401 gyros bring this entry level mixer quad affordable. A higher resolution mixer such as the Mini-mixer by Clarkst, or the Digimix II mixers might increase the overall gyro only quad's performance.
BTW Brendin aka Xarnon is the author of the gyro mixer quad diagram: http://www.rcgroups.com/forums/showt...=3#post4727117
FWIW.
Cheers,
Jim
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Old Mar 13, 2010, 09:28 PM
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Canada, ON, Toronto
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Quote:
Originally Posted by jesolins View Post
The good news is the demonstrated tricopter and quad successes using the $13 HK401 gyros bring this entry level mixer quad affordable.
I've not seen any posts (mind you I don't follow all the threads) where tri or quads were flown using only HK401s.
Jim,
I thought the HK401s were only used for the yaw servo, and the $25 Telebees were used as the main gyros.
At least that's what you see on the first page of most build logs (that may not have been updated)

Can you post some links please?
Thanks,
adrian.
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Old Mar 13, 2010, 11:05 PM
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Have seen quads with GWS gyros, but dont know which ones, are GWS bettern than hk401s?
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Old Mar 14, 2010, 07:54 AM
Tri-Quad-Hexa-Octo-copters!!
United States, TX, San Antonio
Joined Feb 2007
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Adrian,
Signguy uses three of them for the CP and one for the yaw servos. He has shhown that they can be used in rate mode for large frames or digital mode for smaller than 13" frames. Only the yaw gyro is set to HH mode. Here are some pertinent posts from Signguy on using the HK401's on his tricopter builds:
http://www.rcgroups.com/forums/showt...1#post14439637
http://www.rcgroups.com/forums/showt...1#post14351398
http://www.rcgroups.com/forums/showt...1#post14318430
http://www.rcgroups.com/forums/showt...1#post14439637
http://www.rcgroups.com/forums/showt...1#post14504310
http://www.rcgroups.com/forums/showt...7#post14590510
Many other users in his thread and other tricopter builds are having great success with them too.
I think one Gent was having setup issues with them...but there is always one or two of those even in the best situations
No doubt in my mind they would work well on a quad mixer setup. They should work well with Clarkst's mini-mixer too: http://www.rcgroups.com/forums/showthread.php?t=949507 and http://www.mini-mix.blogspot.com/
Cheers,
Jim
Quadrocopter and Tricopter Mega Link Index
Quote:
Originally Posted by outsider787 View Post
I've not seen any posts (mind you I don't follow all the threads) where tri or quads were flown using only HK401s.
Jim,
I thought the HK401s were only used for the yaw servo, and the $25 Telebees were used as the main gyros.
At least that's what you see on the first page of most build logs (that may not have been updated)

Can you post some links please?
Thanks,
adrian.
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Last edited by jesolins; Mar 29, 2010 at 11:56 AM.
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Old Mar 15, 2010, 07:27 AM
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Thanks Jim
I've read through those posts you listed. I'll have to get me a few of those gyros.
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Old Mar 16, 2010, 08:26 AM
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1,025 Posts
seems tricopter is easier to build than quad, only three gyros and ccpm mixing while the quad seem to need fancy mixing, some have made it with gyros only though
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