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Old Jun 25, 2012, 06:42 PM
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Moyock, NC
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Flight times seem pretty reasonable. Thanks for the responses. There has been mention of a few S800's crashing with some speculation that the ESC's are getting too hot. Have you guys been monitoring the temps on the ESC's?
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Old Jun 25, 2012, 06:48 PM
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Yes, I have, just today. So to me everything is ok with the temps (air temp 21°, motors and escs arround 40°). I will make a second run when it becomes hot (30°Celsius+) again.
DJI S800+Z15 Motors and ESCs Temperature Test (6 min 10 sec)


best regards

Ferdinand
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Old Jun 25, 2012, 06:59 PM
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Moyock, NC
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You must have been waiting for someone to ask that question. Thanks for the video. Looks like you have your bird flying very nicely. I almost started laughing when you started taking temps while it was in the air, but it looks like it was holding still so nicely.
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Old Jun 25, 2012, 07:04 PM
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Maybe someone can answer this for me, why does the gimbal need to be camera specific? I know they have the NEX version and the GH2 version. I have never seen another gimbal so specific.

Does the Zenmuse use any gyros on the gimbal itself or is it strictly using the WKM for control?
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Old Jun 25, 2012, 07:18 PM
by Alary Design
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Mesa, AZ
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Quote:
Maybe someone can answer this for me, why does the gimbal need to be camera specific?
It is because of the direct drive brushless servo motors used. They have only 103 oz/in full stall torque compared to other gimbal systems that have gear/belt reduction with between 500-800 oz/in torque. The Maxon brushless motors used work best when there is no static preload on them. The gimbal axis must be very well balanced. Also the moment of inertia of each axis must be quite specific for the feedback loop tuning of the gimbal in order for it to function as well as it does.

It's not necessarily a negative issue. Just nature of the beast with the motor and control system they used. For precision performance with micro motion control this is not uncommon.
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Old Jun 25, 2012, 07:31 PM
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Originally Posted by manvsuav View Post
Do you know if it can be used on a custom hexa frame with my droidworx landing gear? it's a very nice gimbal that's for sure.
Good question
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Old Jun 25, 2012, 07:36 PM
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yes, yes it is
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Old Jun 25, 2012, 08:00 PM
United States, MI, Goodrich
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Originally Posted by manvsuav View Post
Do you know if it can be used on a custom hexa frame with my droidworx landing gear? it's a very nice gimbal that's for sure.
If you have a WKM or Ace One you can mount a Zenmuse on a pole and get great results.

If I ever get any free time I will get the the Henseleit based ZenHeliCam mounted with a Zenmuse and post some videos.

I'll run that on 12s 10,000mah.
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Old Jun 25, 2012, 08:16 PM
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yea cool, id like to see that
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Old Jun 25, 2012, 08:44 PM
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cool! I did a henseleit heli cam with photohigher gimbal in 2007
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Old Jun 26, 2012, 04:14 PM
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Austria, Niederösterr., Eggenburg
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Took the Z15 out for a fly on our local airfield:

Z15 video-blog: out in the fields (3 min 46 sec)


best regards

Ferdinand
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Old Jun 26, 2012, 04:25 PM
by Alary Design
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Mesa, AZ
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Quote:
Took the Z15 out for a fly on our local airfield:
Looking great! I always enjoy the shots showing a piece of airframe. Let's you see how well the stabilization functions.
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Old Jun 26, 2012, 10:15 PM
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2-3 weeks ....
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Old Jun 26, 2012, 10:26 PM
Gravity sucks :)
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sidneyw, what do you think about the vibration problem in this video.
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Old Jun 26, 2012, 11:03 PM
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and about hot esc 70°C ?
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