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    digital servos clicking - 5/1/2012 11:37 AM   
    quartersawn


     

    Posts: 4
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    From: Fort Ripley, MN, USA
    Status: offline     		I've been building and flying model airplanes for over 50 yrs., but have recently returned to RC after a 25 yr. break.  Anyway, that being said I am more than a little confused re: all the new technology in the field, I recently purchased a NOS Futaba 6EX-PCm system which included S3151 digital servos and an R127DF Rx-two questions: 1.  when everything is charged and working the servos make a clicking noise, this is amplified by being in the syrofoam container, but I wonder if this is normal?  2.  I need another Rx, should I look for a another R127DF, or is there a PCM unit I should seek out?
    Thanks for reading and helping.


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    RE: digital servos clicking - 5/1/2012 11:54 AM   
    tomfiorentino


     

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    From: New Hartford, NY, USA
    Status: offline     		Quarter sawn,

    Welcome back to the addiction!

    Clicking? I don't know. Are you perhaps talking about a high pitched buzz? That is normal for digitals.

    Also, have you seen the new radios that operate on 2.4 ghz band? The frequency hopping stuff? No need for a frequency board anymore and it is practically limited as to the number of transmitters that can be operating at the same time.

    PCM is "old" FM technology, you could use it, but the radios have gone a totally different direction today.

    Futaba, JR, Hitec, Spectrum...doesn't matter, they all have it.

    Tom

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    RE: digital servos clicking - 5/1/2012 12:13 PM   
    quartersawn


     

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    From: Fort Ripley, MN, USA
    Status: offline     		By clicking I mean they are active-tick, tick, if you hold them you can feel a little bump-this happens on all four servos without any Tx input.  I have noticed the 2.4, and I'm sure I'll move that direction in the future.  However, here in rural MN we don't have interference problems yet, and, I have 8 models ready to go with old (post 1991) FM and AM equipment ready to go-just have to relearn how to fly.
    Thanks for responding


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    RE: digital servos clicking - 5/1/2012 2:50 PM   
    BuschBarber


     

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    quote:

    ORIGINAL: quartersawn

    By clicking I mean they are active-tick, tick, if you hold them you can feel a little bump-this happens on all four servos without any Tx input.  I have noticed the 2.4, and I'm sure I'll move that direction in the future.  However, here in rural MN we don't have interference problems yet, and, I have 8 models ready to go with old (post 1991) FM and AM equipment ready to go-just have to relearn how to fly.
    Thanks for responding


    I have been building and flying model aircraft since 1956. I have been flying RC since 1978. After years of dealing with Interference caused by the environment, gas engines, antenna routing, others on the same frequency, 2.4 is like a godsend. For the most part it eliminates the risk of shootdowns and allows you to turn on your Tx whenever you wish without worry of interference.

    I have gradually converted all my 72Mhz Rx's over to 2.4. I was fortunate because when 2.4 came out, I had a transmitter that was Modular, so I could switch between a Synthesized 72Mhz RF Module and a Spektrum 2.4 RF Module. I still use them today.

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    RE: digital servos clicking - 5/3/2012 5:40 AM   
    chuckk2


     

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    From: Warner Robins, GA, USA
    Status: offline     		You may be able to reduce or eliminate the "clicking" by adding a capacitor at the receiver between the red and black servo leads, or at the battery connector.
    The Voltage rating on the capacitor should be no less than ten volts, and no higher than 25 or so.
    You can poke around on the various R/C web sites, and find them already made up with the appropriate connector.

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    RE: digital servos clicking - 5/3/2012 1:05 PM   
    quartersawn


     

    Posts: 4
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    From: Fort Ripley, MN, USA
    Status: offline     		Even though I've been a modeler for years, I'm new to many RC tech things.  Turns out I had the TX on PCM (don't know how-fooling around) when I switched it to PPM the servos settled down. 
    Thanks for the help, this is a great hobby when a request for help is responed to so quickly and fully.


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    RE: digital servos clicking - 5/3/2012 1:17 PM   
    BuschBarber


     

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    quote:

    ORIGINAL: quartersawn

    Even though I've been a modeler for years, I'm new to many RC tech things.  Turns out I had the TX on PCM (don't know how-fooling around) when I switched it to PPM the servos settled down. 
    Thanks for the help, this is a great hobby when a request for help is responed to so quickly and fully.


    With PCM transmitters, the default Modulation for every Model Memory is PCM. I have done that several times, over the years, with my PCM transmitters. Usually you realize the mistake when you move the sticks and none of the servos move.

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    RE: digital servos clicking - 5/3/2012 1:17 PM   
    BarracudaHockey



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    From: Jacksonville, FL, USA
    Status: offline     		DF in your reciever part number means Dual Conversion FM (FM incorrectly means PPM) a PCM reciever would be DP

    That said, if you're running an PPM reciever with the tx in PCM mode the servos should have been going bonkers.

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    RE: digital servos clicking - 5/3/2012 1:34 PM   
    quartersawn


     

    Posts: 4
    Score: 100
    Joined: 1/26/2012
    Last Login: 5/6/2013
    From: Fort Ripley, MN, USA
    Status: offline     		Actually, servos worked as normal, with the exception of the tick tick tick with the tx on and sticks in neutral-no jumping or going crazy.  Howerve, if you held one you could feel a slight pulse.  I have to apoligize again, the new computer radio is a totally new animal to me.   I have another story though, if folks are interested.  I purchased and used a JR AM set from circus hobbies in the early 80's, when the 1991 frequency rules came into play JR send a cupon to exchange my old set for a new one ($50)-I took advantage of this offer and didn't use the new until last month.  Having installed it in an old Super Kaos it worked perfectly, started the engine taxied around the driveway etc.  Later, after charging the batteries (cycled them several times), the servos were crazy unless I moved 20ft away with the antenna collapsed.  Here's the question, are the tx batteries too powerful causing the rx to go crazy?  I have since replaced this with a JR SX 600 FM, but am curious about the older AM unit-had good luck with the original, never a glitch, so.....
    Thanks


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