I know a question about 'feel' is subjects but I am curious to hear from others with experience on the Hexa and Octos. Do you think these larger birds fly with more stability? Less 'twitchy' than a Quadcopter? Since they are obviously heavier, do that have that kind of feel in the flying air? Maybe Im thinking 'heavy' = 'stable feel'.
I flew hang gliders years ago and the bigger wings flew slower, but were pretty boaty stable..
My question stems from flying my Quad for a week. Just a little every day, mostly inside. I went outside this weekend and flew a bit until a crash (but I have spare parts!). The winds was pretty low but it seemed to push the little Quad all over the place. Alt Hold did not work so well. I was at around 4 meters, when it would jerk upward/higher quickly. It is what led to the crash, it jerked up and went downwind before I could bring it back softly.
Thanks for any feedback,
Larger flying machines are inherently more stable (if designed properly), but a lot of smoothness and stability comes from tuning your PID gains properly. I think you can get a hex to act much like an octo. A lot of times it comes down to a level of redundancy you want and maybe an increase in payload as well. I fly a large (over 5 ft tip-to-tip) octocopter and it can behave very very smoothly, but that is with proper tuning. If I tune it poorly it is twitchy like any other platform. Also you mentioned the wind... my octo can withstand some heavier winds because of its size. Good luck in your endeavors!
I don't think its the number of motors that make it smooth, its size and tunning..
I am flying a tri-copter 1.7m across.... that is far more stable than most videos I have seen here...
Here is a video from that Tri
Thanks for the feedback. It makes sense that bigger is better able to handle winds. Both of you (Adam/Eddie) clearly have big birds with smooth flight. Hmm, it seems to be all a set of tradeoff choices (size/weight/operating ranges/flight time). Some things never change :) .
oh... one thing I found... the motors need to be in their sweet spot...
If the props are too big and turning too slowly, this is not very smooth..
If the props are too small and turnning too fast, may be able to lift anything...
so... get lots of props..haha
I have been running combinations in Ecalc like it's my full time job! Do you find that tool to be accurate?
>>Lots of props I got ya, it is the most replaced part on my Quad so far.... :(
I have a lotusrc T580P+ quad. It comes with 400KV motors and 14in props. I changed the FC to DJI Wookong M. It is sluggish but stable. My only probelm now is it wobbles on GPS positon hold. I tried using smaller 12 in props hoping to get faster movement but it drains my lipo faster. As for load carrying, the 14in props seem to do better carrying my 250g camera than the 12in props. Any advice?
dude... I don't know that machine... If its a fast wobble then I would say rate_P is too high...
If its a slow wobble the change some GPS parm... that all I got.. haha
No problem. You can see my octo here.
Also, I have another video that hasn't really been sliced up properly yet, but I can PM you the link if you are curious enough.