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  1. #1

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    airtronics SD 10 G -jumpy servos.

    I recently installed my 10G radio in a backup plane that i had a Spektrum system in. When i turn on the radio, two of the Hitec-high torque servos vibrate like crazy until I move the stick, then settle down. If I move the stick again same thing happens. This only occurs on two servos, so I pulled the two out and plugged back into the spektrum system, no shaking and servos move fine. Any thoughts as to why this only occurs on with Airtroncis system????

  2. #2
    PatternPilot's Avatar
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    RE: airtronics SD 10 G -jumpy servos.

    Not sure what HiTec servos or Airtronics RX your using.. but this is out of the manual...

    Due to the extremely high frame rate that the 92104 10-Channel receiver included with your SD-10G 2.4GHz FHSS-3 radio
    control system operates at, we strongly recommend the use of digital servos. If you use analog servos and experience
    problems, you will need to either upgrade to digital servos or use the Airtronics 92824 8-Channel, 92674 7-Channel, or 92664
    6-Channel Micro 2.4GHz FHSS-1 receivers. These receivers operate at a lower frame rate, therefore, analog servos can be used
    with them without issue.



    Scott

    Scott Anderson - CPA #2 - www.ClassicPatternAssociation.com - Team Airtronics SD10G - NSRCA 529 - VRCS 236

  3. #3

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    RE: airtronics SD 10 G -jumpy servos.

    Scott- what you say makes sense, the servos I am using are both analog. One of the servos vibrating a hitec 645, I took it out and replaced with a 635 also analog, which I did not get vibrations. Did I just get lucky with that one?

  4. #4
    stuntflyr's Avatar
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    RE: airtronics SD 10 G -jumpy servos.

    Not all analog servos will be affected. Some are OK. I usually use FHSS-1 receivers when using analog servos so it's not an issue but if they act OK in test the RX likes them.
    Chris...

  5. #5

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    RE: airtronics SD 10 G -jumpy servos.

    I am using Airtronics 94774's on my ailerons a get a pretty serious chatter, but it goes away when the radio is about 20 feet away from the model. So maybe it could be that the TX being close to the RX has something to do with it.
    Bob

  6. #6

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    RE: airtronics SD 10 G -jumpy servos.

    SD-10G TX , Airtronics 10Ch RX and Jr Digital Servos.

    No jitter ever; even on low power mode.

  7. #7

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    RE: airtronics SD 10 G -jumpy servos.

    Hmm... so what could be giving my system the jitters?
    Bob

  8. #8

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    RE: airtronics SD 10 G -jumpy servos.

    I also have the same combo ( except the more robust JR 8611 Digital servos) in my 35% Carden Cap and fortunately, no jitters -even in low power mode. Perhaps it's because of the " premium" JR Digitals ?
    I had read that the Airtronics Digitals are quite good, but never tried them.
    I paused ; thinking that the cheap price, even less than some "sport" digitals, might mean lower quality.
    No knock against them because several guys I know are using them with great results.

  9. #9

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    RE: airtronics SD 10 G -jumpy servos.

    More info here, I had the same problem with ATX 94746 using all ATX gear and could not use them.

    http://www.rcuniverse.com/forum/m_10659777/tm.htm

  10. #10

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    RE: airtronics SD 10 G -jumpy servos.

    I had a similar problem with my 10SD. I changed from 72Mhz to 2.4 and my analog throttle servo smoked! It became very hot and shorted out. I replaced with another analog servo and it started to heat up again worked for a short while and shorted out. I changed the servo to a digital version and my problem went away. I was using the 10 channel Rx. All the other servos are digitals with no problems.

  11. #11

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    RE: airtronics SD 10 G -jumpy servos.


    ORIGINAL: F.Imbriaco

    I also have the same combo ( except the more robust JR 8611 Digital servos) in my 35% Carden Cap and fortunately, no jitters -even in low power mode. Perhaps it's because of the '' premium'' JR Digitals ?
    I had read that the Airtronics Digitals are quite good, but never tried them.
    I paused ; thinking that the cheap price, even less than some ''sport'' digitals, might mean lower quality.
    No knock against them because several guys I know are using them with great results.

    Mine are working fine otherwise. When the Tx is several feet away from the model the jitters cease, so the only inconvenience was setting up the surface throws with a digital meter - what a beeatch that was!
    Bob


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