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Thread: The Adapt-a-Damper - Open Source Project

  1. #241
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    Quote Originally Posted by Dave Smith View Post
    I use a roto damper on my WSM 221/2 with home built burner with no problems.
    Thanks Dave. Would you mind sharing your PIDs and Servo settings? How do you set your TOP valve?
    My question was a bit more specific: Is it WORTH it? I'm afraid that i used to small tubes. I used 15mm tubes which may introduce too much anti pressure, and there is next to no natural air flow when the fan is off, so a damper may not add any value?!?
    I sure can just try it out, as it's build pretty fast, but still want to hear your opinions.

  2. #242
    TVWBB Super Fan Dave Smith's Avatar
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    here's what I use on my WSM 22.5
    B=0; P=4; I=0.02; D=5
    Fan pulse; min 0%; max 30%; max at startup
    Servo 700 - 2110
    top vent is always wide open
    My burner uses 3/4" copper pipe

    WSM 22.5; 22.5 OTS; MINI

  3. #243
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    Just finished printing mine in natural Esun PETG. Going to do the mod on my HM 4.0 to hook it up.

    Weber Performer 02', WSM 18.5, HeaterMeater 4.0, Smokey Joe Gold, Thermapen SF

  4. #244
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    Very nice!

  5. #245
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    Does it matter what voltage the capacitor is? I don't work with capacitors so I am a bit unfamiliar with how they are rated.
    Weber Performer 02', WSM 18.5, HeaterMeater 4.0, Smokey Joe Gold, Thermapen SF

  6. #246
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    Not really. The cap must be rated for a voltage above what we need. The servo operates at 5V max, so any 16V+ cap is fine. I used 100u 25V as it was the first i found in my parts box.

  7. #247
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    Perfect! That is the info I needed. One last question. Is the capacitor needed for all of the servos or just the less expensive ones?
    Weber Performer 02', WSM 18.5, HeaterMeater 4.0, Smokey Joe Gold, Thermapen SF

  8. #248
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    Quote Originally Posted by Troy Gamm View Post
    Perfect! That is the info I needed. One last question. Is the capacitor needed for all of the servos or just the less expensive ones?
    As it won't do any harm to any servo i would just install it. You can think of the cap as a buffer it makes sure that the servo always gets the voltage needed, and as it's a very cheap item i'd just install it.

  9. #249
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    Sounds good. Thanks for the advice!
    Weber Performer 02', WSM 18.5, HeaterMeater 4.0, Smokey Joe Gold, Thermapen SF

  10. #250
    TVWBB All-Star Mike David P's Avatar
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    I'm new here again but If I'm reading this right y'all are talking a exhaust damper on a WSM or the like. I too have seen them before in many variations for many types of cookers. As I've done temp control for 39 years, Not trying to rain on anyone's parade but air intake is the key, not exhaust. Simple thermodynamics. Heat rises over the meat. ATC's are cheap these days.

    Just my .02
    18 WSM, Spirit S-320, Char-Broil Big Easy, Wife 1956 model

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