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Old Oct 07, 2012, 09:44 AM
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United States, TX, Spring
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Try putting one in your cart then logout then logback in an add another
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Old Oct 07, 2012, 10:12 AM
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Originally Posted by tech69x View Post
Try putting one in your cart then logout then logback in an add another
Thanks for the idea tech69x, unfortunately that didn't work, tried a few combinations of being logged in/out... maybe I'll just bring it up to support and see where I get.
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Old Oct 07, 2012, 10:29 AM
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United States, TX, Richmond
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Originally Posted by COCO2010 View Post
Thanks for the adviced ! If i'll get a camera it's gonna be a GoPro ,nothing else gets my attention but the GoPro.I checked the link you gave ..just to see what you are talking 'bout but,the HD Wing got mix bags reviews...got several iphones laying around that's why I was thinking of just playing with it for now...until I get rich and get a GoPro.
GoPro is the way to go. That's what I have on my FR4 multirotor. The little keychain cmos type cameras are great as headcams but not as good when used to record video from a quad or plane unless you do alot of vibration dampening and take care in balancing your motors and props.
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Old Oct 07, 2012, 10:42 AM
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VTAIL/Multirotor Center of Gravity

This is what I meant about placing a line from motor to motor. Where the lines meet in the middle is the center of gravity and indicates where the controller should go.

Because the photograph is not taken from directly overhead, the angles of the lines are wrong so the COG is wrong as shown by the lines but you get the idea.
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Old Oct 07, 2012, 11:52 AM
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Having some fun with my son's KK2 KMAN Kopter running the original V1.2 firmware

K-MAN Kopter 10-06-2012 (6 min 56 sec)
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Old Oct 07, 2012, 11:55 AM
safer on the ground
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wilts, United Kingdom
Joined Jul 2006
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spinning

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Originally Posted by tech69x View Post
I have found that the CG is very important as I had my battery 1in to far forward and it would spin to the left bad when I moved my battery back all was good.
glad to have been of some help
Ray
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Old Oct 07, 2012, 12:06 PM
Custom quad builder
tech69x's Avatar
United States, TX, Spring
Joined Apr 2012
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Originally Posted by teccer1234 View Post
glad to have been of some help
Ray
Yes you did thank you sir.
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Old Oct 07, 2012, 12:26 PM
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United States, FL, Miami
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Originally Posted by rcjose View Post
Having some fun with my son's KK2 KMAN Kopter running the original V1.2 firmware
i think i have that cd of the music you used lol :P
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Old Oct 07, 2012, 01:29 PM
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Originally Posted by rcjose View Post
This is what I meant about placing a line from motor to motor. Where the lines meet in the middle is the center of gravity and indicates where the controller should go.

Because the photograph is not taken from directly overhead, the angles of the lines are wrong so the COG is wrong as shown by the lines but you get the idea.
Sorry Sir,

but thats definitely not the CoG.

For better understanding:
http://en.wikipedia.org/wiki/Center_of_gravity

;-)
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Old Oct 07, 2012, 01:33 PM
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i think i have that cd of the music you used lol :P
Ferry Corsten's Gouryella and Out of the Blue
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Old Oct 07, 2012, 01:38 PM
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Originally Posted by critical_limit View Post
Sorry Sir,

but thats definitely not the CoG.

For better understanding:
http://en.wikipedia.org/wiki/Center_of_gravity

;-)
I don't need a better understanding of what I already know when it comes to building various multirotors because I have built various ones. The center of gravity on a multirotor is the point where lines drawn from each motor cross.

And as I stated in my post, the lines in the picture will be incorrect due to the angle of the photo.
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Old Oct 07, 2012, 01:42 PM
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Near Aberystwyth - Wales
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Originally Posted by critical_limit View Post
Sorry Sir,

but thats definitely not the CoG.

For better understanding:
http://en.wikipedia.org/wiki/Center_of_gravity

;-)
May not be CoG of frame but is Center of lift and where you want CoG to be as that is also the center or pivot moment ie where the craft will pivot around when banking, pitching and yawing.

The craft will handle and hover a great deal better with all those points coinciding, that is what was meant.

Why do you think the CoG on Helicopters tends to be inline with the rotor drive shaft, same reason.
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Old Oct 07, 2012, 01:57 PM
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Originally Posted by rcjose View Post
Ferry Corsten's Gouryella and Out of the Blue
Ah the good ol' days of trance lol before dubstep O_o lol
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Old Oct 07, 2012, 02:16 PM
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Originally Posted by Del-Dredd View Post
May not be CoG of frame but is Center of lift and where you want CoG to be as that is also the center or pivot moment ie where the craft will pivot around when banking, pitching and yawing.

The craft will handle and hover a great deal better with all those points coinciding, that is what was meant.

Why do you think the CoG on Helicopters tends to be inline with the rotor drive shaft, same reason.
Could not have said better.....
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Old Oct 07, 2012, 02:24 PM
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Ah the good ol' days of trance lol before dubstep O_o lol
Maybe that's why itr flew so well. I was in a trance
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