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Old 12-31-2010, 02:15 PM   #1 (permalink)
Janosax
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Join Date: Jul 2008
Default MKS DS95 limitation

Hi all!!

I've got some info on these new MKS DS95 http://www.mks-servo.com.tw/goods.php?goods_id=ds95



[ame]http://www.youtube.com/watch?v=gaDkDwM-yZQ&feature=player_embedded[/ame]

They seems to perform very well on BeastX, depsite some limitations on pitch and cyclics. It's seems to be related to 900 to 2100Ás band width on DS95, while BeastX has 850 to 2150Ás. It appears that with good 6░ setup, these servos perform well but are limited to 10░ on cyclics and 12░ on pitch.

Here is a mail from MKS that you can find on this topic from a french forum >> http://www.france-helico.com/viewtop...?f=234&t=39201

Quote:
Dear customers,
Several customers reported that our servo does not work well with the MicroBeast. The servo might be trembled or worked feebly.
Some customers reported that the MKS servos do not work well with the MicroBeast. When the aileron and elevator working together at the same time and the pith was pushed to limitation, our servo might work tremblingly or feebly. We think the reason is that the working range was out of our servo limitation.

In the setup of the MicroBeast , we suggest you : 1. In the setup of point J (Teaching the cyclic pitch geometry), please set the cyclic pith to 6 degrees. 2. In the setup of point K(Adjusting the collective pitch range), please set the collective pitch range under 12 degrees. Under these two settings, we believe your MKS servo should be fine with the MicroBeast.
Under the previous settings, if your servos still have the trembling and out of control problem, please try to lower the cyclic swashplate limit in the point L. Please make the servo to stay in the safe workable range. (If the adjustment can not make the cyclic pitch to 6 degrees, please use longer servo arms. )
Many pilots, such as the pilots in Thailand, applied the MKS full series servo with the MicroBeast flybarless system, and they got outstanding results in many 3D competitions (such as the 3DX China).
We asked the professional pilots for suggestions, and they think it is capable to perform the 3D maneuvers under the setting that collective pitch to 12 degrees and the cyclic pitch to 6 degrees. The Flybarless system can make the helicopter to perform the full capacity; there is no need to set the cyclic pitch to 14 degrees or more.
Moreover, we are contacting the engineer of the MicroBeast and we are trying to reduce the related potential problems.
MKS will produce longer servo arms for optional purchase, please wait for our good news. We appreciate your patience in advance.

Please enjoy your flight!
IMO, it's a really bad for autos, 12░ pitch is definitively not enough, even if lot of pilots don't do them on 450. For me, it's annoying.

Despite this they perform perfectly on BeastX for 3D, look at this video from Benjamin Bosso, french 3D pilot (he get 12░ pitch and 10░ cyclics) >>

[ame]http://www.youtube.com/watch?v=WGlOfCvcqlM&feature=player_embedded[/ame]

What do you guys think about these considerations?

Jean
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