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        Discussion AP Hexa or Octo? What gives you the best stabilisation?

#1 Voguna Jan 30, 2011 11:04 AM

AP Hexa or Octo? What gives you the best stabilisation?
 
Hey.

I am sick and tired of my T-rex 600 ESP AP platform. Its to hard to get rid of the vibes! I think I want to take the Aerial footage to a hexa or octo. I hope you can give me a hint of what is a good hexa or octo to carry a DSLR camera, like Nikon D90. Thanks!

#2 kjella Feb 03, 2011 05:49 AM

i have a kk hexa and this hexa is ok,but i am´going to build me a mk oktocopter for my filming and stuff like that,i think the best thing is to go for the okto??

hope this will help you

#3 RC Man Feb 03, 2011 09:38 AM

They are both very stable.

With 6 motors you will crash 2/3 of the time with a motor or ESC failure. With 8 motors you will not crash with a failure and it will fly very well.

The more motors the larger the vibration problem. For AP you need to balance the motors and props to minimize vibration. Also materials make a difference. Carbon fiber transmits vibration much more than fiberglass (G10) or wood.


.

#4 Stacky Feb 08, 2011 09:49 PM

It seems to me that most people are building symetrical shaped quads or hexa or octo. I see a UK firm has got a different configuration which maximises the view for its cameras.

http://flyingvideo.co.uk/gallery

#5 hexa Feb 08, 2011 10:35 PM

Quote:

Originally Posted by Stacky (Post 17353584)
It seems to me that most people are building symetrical shaped quads or hexa or octo. I see a UK firm has got a different configuration which maximises the view for its cameras.

http://flyingvideo.co.uk/gallery

http://forum.mikrokopter.de/topic-19919-1.html

#6 Stacky Feb 09, 2011 12:12 AM

Thanks for the link, its a shame I dont understand German.
Would this configuration require different control boards than the ones many are using on these forums?

#7 Peter Seddon Feb 09, 2011 06:04 AM

translate.google.com is your friend.

Peter
Quote:

Originally Posted by Stacky (Post 17354709)
Thanks for the link, its a shame I dont understand German.
Would this configuration require different control boards than the ones many are using on these forums?


#8 Tarro Feb 09, 2011 06:35 AM

Quote:

Originally Posted by RC Man (Post 17297346)
They are both very stable.

With 6 motors you will crash 2/3 of the time with a motor or ESC failure. With 8 motors you will not crash with a failure and it will fly very well.

The more motors the larger the vibration problem. For AP you need to balance the motors and props to minimize vibration. Also materials make a difference. Carbon fiber transmits vibration much more than fiberglass (G10) or wood.


.

Here is a video of my UAVX Octo losing a motor in flight.
Fun Flying (1 min 54 sec)


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