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I think it might be possible that the ESC on motor No.4 may have reached a temprature whereby it either shut down or backed off the throttle/power to that motor (poss a temperature/safety feature of ESC) There can't be any perminent damage because I did two 10min back to back flights yesterday...

HiModel pro 30amp, been running them for months with no problem but as soon as I installed 5.06 the hexa just started to drift back after 5 mins of flight, it was as if motor no.4 was not responding.

No red lights, battery warning would be yellow anyway. Batteries were fully charged and I usually get a minimum of 10 mins before I would expect to see first warnings and the problem started at 6 mins into the flight. Did see a couple of white lights flashing about 3mins into the flight but I...

I upgraded my WKM to 5.06 on Monday thinking I might see an improvement in stability with my heavy lift AD6, after checking and double checking everything I took the rig out on Tuesday for a test flight, all looked fine for the first 5mins but then I noticed that in forward flight altitude hold...

Always use a lipo "safe" bag while charging, testing and measuring even while storing your lipo

Hi Ed Thanks for your input, it would help if DJI gave better instructions and some idea of what exactly each parameter does, I will try raising vertical gain and see what happens. Andy

Basic gains set at 157 157 120 120 atti gains both 82 advanced P&R 150 disturbed 100 vertical both 100. I have had all advanced set at default 100 and same result. I'm flying an AD6 HL, AV200 gimbal, Pulso U28s (2814/22) ESC HimodelPro's 30amp, Graupner 11" props and 2 4s 5000 batt. TOW 4.25kg

Thanks for that, when you say 'increase' dsturbed gain, I have this set a default at the moment so I would be decreasing to 80 as well as reducing vertical from 100, is that what you mean? thanks

I have found that flying in attitude mode with my hexa it is much smoother (video smoother) than when it's in gps/att. In gps mode the footage has small "twitching" movement and it is especially less stable when descending. Has anyone else found this and if so would changing any of the advanced...

Don't know about Hyperion charger but i can tell you that the Thunder Power TP820CD I use will charge both my 4s 5000 at the same time in about 20mins but you will need a good power supply to drive it.

Also with you on this one ken, like my AV200 and will wait to see what the upgrade is, I bet it's worth waiting for, great product and great service. I always get a reply to emails and parts shipped to UK within 10 days.

Have you tried setting the yaw gain higher, I run my WKM at 130 but prior to finding a motor canted I was running at 160 and it would hold. Good luck.

Check all your motors are straight, I had one only ever so slightly canted by maybe 2 degrees and as soon as I applied power or forward flight it yawed, as soon as I straightened it the yawing stopped. You may also need to increase the yaw gain.

Motor balancing was quite easy compared to prop balancing, have a look at this YouTube video http://www.youtube.com/watch?v=OgvayWfey78 It worked for me. On my Pulso U28 motors only 3 need to be balanced, the reduction in vibration is amazing. I still need to find out what is causing my video to...

Do you actually mount the GPS on a 15" stick or are you just using this as an additional visual aid only?

I have checked all motor mounts and they all look vertical, in fact they are all locked into position with the hole in the boom ends. I have also reprogrammed each ESC to make sure all are on medium timing and end throttle calibration through RX. Each motor and ESC seem to be responding normally...

I'll send a PM, but please be assured I am not slating DJI, I just think there may be problems. It does not help when the manual is somewhat lacking in clear english at times.

After having several problems of my own and reading this and other threads it seems obvious to me that there is an issue with the DJI WKM FC, I think someone from DJI should start reading these posts and get to work on a solution. It seems DJI started out well but now seem to have bugs in the...

I would but I feel I would only be masking an undrlaying problem (if it does work) because it was OK before with Yaw set at 110. I will give it go to see what results I get, but I need to do some real work before I get a chance. Andy

I'm using same props as you on a Droidworx AD6 HL frame, all motors fixed as standard (straight), this set up worked before the crash and after careful inspection of all parts after repairs there is nothing physical that I can find wrong. My gut feeling is that an ESC is perhaps not responding...