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Jan 18, 2012, 07:35 PM
Trying to understand something
[/QUOTE]The camera is a Panasonic SD 800 camcorder, just letting it do its own thing on auto.[/QUOTE]

Good lens. If I may advise you, this is what to use to have 35mm x 0,7= 24,5mm. Much better for landscapes and interiors IMHO:

youtube.com/watch?v=MMBVPh2i9FY
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Jan 18, 2012, 08:18 PM
Registered User
Is it safe to switch between flight modes during flight??

Also in Hexa Configue, is the DJI design to fly if one motor cease?
Jan 18, 2012, 08:31 PM
Registered User
Quote:
Originally Posted by isaacintheclouds
+1, +1 indeed!
+1 again, Jim is one of the most helpful people around.
Jan 18, 2012, 08:35 PM
Registered User
Quote:
Originally Posted by eyeball
http://www.youtube.com/watch?v=VmJh9...Yv4czC1ddd8rn-
Wow...5000 nanotech 90c 4 cell x2 gives me 5 minutes max. Only flown once with this setup and I could do with a little more airtime around 7mins would be nice. Should I try the zippy 8000 4cell x2 or does any one else have any ideas?
All up weight is around 6100g about 13lb.
Motors AXi 2826-12
Props 13x6.5 Apc E
Ztw 60A esc's
Av200 with 360 mount
Dji wkm
Gimbal has cctv camera, Fy3o stab, 5.8 vtx...
and a Canon Dslr...

Cant wait to start using her for some serious stuff
My MK based Okto is 6.2kg and get around 8-10min max with 4s 6000mah packs x2. You could look at the following possibilities to get more flight time:
1. ESC switching frequency, if set too high, the copter will be stable (motors respond faster) but not efficient, and motors also run hotter.
2. Different props to match your motors peak efficiency range.

However I also found that flying style and strong win can make a huge difference in flight times. One flight where I was basically just hovering in strong wind, I had my batteries drain to the warning point at around 7 mins, or a calm day I can easily hover up to 10mins.
Jan 18, 2012, 09:02 PM
Registered User
Got four 14x4.7 sf and four counter 14x4.7 sf APC props, all new never used. $45 shipped.
Jan 18, 2012, 09:18 PM
Nevermind...
isaacintheclouds's Avatar
Quote:
Originally Posted by jesolins
From the Quadrocopter and Tricopter Mega Link Index ESC section:
--TIP 5: Listen to your ESCs! After power on after the arming beep if they beep once for each of the number of cells in your lipo, i.e. 3 times for 3s, then you should be thinking to yourself...."self...why am I hearing 3 beeps indicating my lipo cell count when I know that I should have set my multicopter ESCs to NiMh to makes sure my ESCs do not cutoff power and cause a flip"...When you power on most ESCs that are set to Lipo Low Voltage Cutoff, they will do a beep for each lipo cell. As it states in Tip 4 Lipo is an incorrect setting as they should be set to NiMH for multicopter use to help prevent flips that are caused by the ESCs individually going into LVC. If you set the ESCs to NiMh like you are supposed to do with multicopter ESCs so they do not cutoff and cause a crash, then you will not hear these beeps https://www.rcgroups.com/forums/showt...3#post19584492

Cheers,
Jim
This certainly is the cause of the flipping of my rigs, but there has been another problem I have encountered that doesnt sound like its esc related. Several times I have had a sudden near complete loss of pitch and roll control without warning. After a few minutes of normal flight it suddenly decides it doesnt want to fly right. I still have full throttle control but pushing the right stick all the way in any direction has little effect. The first time it happened I was able to get it over some pine needles and no damage was done. I immediately righted it and took off again and it flew fine. It has happened 2 more times since I upgraded to the latest, killing 6 props in the process. I am now out of props and have more on order. 1 or 2 other people on this thread have described similar behavior. Between the first time it happened and the last 2 times, I had at least 25 flights with no problems. Im sending my wkm to Robert to see if there indeed is a problem with the wkm, or if it is just me. I gots to know!
Jan 18, 2012, 10:14 PM
Part 107 certified pilot
RTRyder's Avatar
Quote:
Originally Posted by quadman
Is it safe to switch between flight modes during flight??

Also in Hexa Configue, is the DJI design to fly if one motor cease?
No. I had an ESC fail in flight on a hex and it fell like a bucket of bricks.
Jan 19, 2012, 02:24 AM
Registered User
eyeball's Avatar
Quote:
Originally Posted by MalaysianFlyer
My MK based Okto is 6.2kg and get around 8-10min max with 4s 6000mah packs x2. You could look at the following possibilities to get more flight time:
1. ESC switching frequency, if set too high, the copter will be stable (motors respond faster) but not efficient, and motors also run hotter.
2. Different props to match your motors peak efficiency range.

However I also found that flying style and strong win can make a huge difference in flight times. One flight where I was basically just hovering in strong wind, I had my batteries drain to the warning point at around 7 mins, or a calm day I can easily hover up to 10mins.
Thanks for the feedback MalaysianFlyer....
In reply to your comments, yes Ive got the Axi's set at high timing so you think medium would be better. Ive also got a brand new set of 14x4.7 apc props which I could fit but Im led to believe the wkm doesnt like big props so I bought these instead. what props are you using and have you got the same motors fitted?
Cheers
Paul
Jan 19, 2012, 02:44 AM
Registered User
painter12's Avatar
Ukrainian beach today from my DJI quad.
https://static.rcgroups.net/forums/i...attach/jpg.gif
Jan 19, 2012, 03:02 AM
Registered User
Looks cozy!
Jan 19, 2012, 03:10 AM
Registered User
eyeball's Avatar
Brrrrrrrrrrrr......I bet even that Quad was wrapped up warm with a wooly hat on........now where did I put my swim trunks??
Jan 19, 2012, 04:03 AM
Registered User
painter12's Avatar
Quote:
Originally Posted by eyeball
Brrrrrrrrrrrr......I bet even that Quad was wrapped up warm with a wooly hat on........now where did I put my swim trunks??
It was very cold. I flew for 10 minutes. Then my hands hurt a half hour in a warm car! Here's what's interesting: in the cold in Atti mode blinking blue color (or similar, through sunglasses poorly visible) sometimes... But the behavior of the device was predictable ...
Jan 19, 2012, 04:27 AM
Registered User
Quote:
Originally Posted by isaacintheclouds
Once again a sudden loss of control resulting in 3 more broken props. Anyone else having this kind of problem? No warning, no flashes of white this time, just sudden flipover and crash. ???
Did you find solution or not I had the similar issue and I solved it
Jan 19, 2012, 04:48 AM
@droneminds
Drone Minds's Avatar
The camera is a Panasonic SD 800 camcorder, just letting it do its own thing on auto.[/QUOTE]

Good lens. If I may advise you, this is what to use to have 35mm x 0,7= 24,5mm. Much better for landscapes and interiors IMHO:

youtube.com/watch?v=MMBVPh2i9FY[/QUOTE]
I don't think I can change the lens?
Latest blog entry: Dji P 4 Pro Camera Detail Test
Jan 19, 2012, 04:50 AM
@droneminds
Drone Minds's Avatar
Quote:
Originally Posted by painter12
Ukrainian beach today from my DJI quad.
https://static.rcgroups.net/forums/i...attach/jpg.gif
Cool, or freezing.
Latest blog entry: Dji P 4 Pro Camera Detail Test


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