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Thread: INTRODUCING: the "Roto Damper"

  1. #661
    New Member
    Join Date
    Sep 2015
    Location
    Baton Rouge
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    10
    Quote Originally Posted by RalphTrimble View Post
    I've been back and forth, had jitter, and zero jitter depending on the combination of the above. I had initially not been fond of the move and rest firmware because my MG90s would sometimes twitch and stick open and the HM would put the servo to rest in the open position letting my fire go out of control. Frustrated with this I changed to a Hextronik HXT900 servo which never jittered or twitched a bit, working great for a year (powered on 24/7). Recently I flashed the latest firmware which I think keeps the servo energized and my servo was dead a few days later. Coincidence? Probably... I ordered another HXT900 and am installing it tonight, guess we'll see if it takes another year to kill this one! BTw, the HXT servo doesn't fit the std RD, the shoulder is too shallow, needs a custom part.
    What settings do you have for the HXT900? I'm trying to calibrate mine but cant get anywhere. Its closed or 360 partially open. Can't dial it in yet

  2. #662
    TVWBB Emerald Member
    Join Date
    Apr 2013
    Location
    midwest
    Posts
    3,385
    my settings are 580-2050, every servo will be slightly different but it should be in that ballpark...
    I created the Roto Damper, RD3, HMv4.2 sliding back case, "air-burner" and the "ping-pong" valve in my quest for delicious "set and forget" BBQ.

  3. #663
    New Member
    Join Date
    Jul 2016
    Location
    Vermont
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    17
    I think I'm having a similar issue as the most recent. I've had my RD3 for a while now and done more than a dozen cooks with it:

    Here is a video of the problem:
    https://youtu.be/kHkGqa8LVeo

    Also links to my settings and most recent burn:
    https://ibb.co/eMVTun
    https://ibb.co/hLkuZn

    So despite the jitter the thing is running rock solid. Although at the very end of that burn the screw came off of the servo and that whole piece fell off.

    I did read the other threads and even Ralphs old servo booster mod.

    I am running about 50ft of ethernet cable to the RD3 so not sure if that is an issue.

    This behavior is new but I have been tweaking my start up and servo settings to hone in on good settings for my rig.

    If the solution is capacitor (47uF 10V polarized) .. can someone point me to a link as I can handle the install but get lost when looking at the various parts when I search that.

  4. #664
    TVWBB Emerald Member
    Join Date
    Apr 2013
    Location
    midwest
    Posts
    3,385
    Just look for an "electrolytic" capacitor with those specs.
    I created the Roto Damper, RD3, HMv4.2 sliding back case, "air-burner" and the "ping-pong" valve in my quest for delicious "set and forget" BBQ.

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