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Styrofoam Incubators Club - Page 4

Poll Results: What kind of Styrofoam Incubator do you have?

 
  • 34% (41)
    Hovabator
  • 11% (14)
    Little Giant--manual controls
  • 30% (37)
    Little Giant--digital controls
  • 23% (28)
    Farm innovators
120 Total Votes  
post #31 of 520
I am just finishing up a hatch with a little giant 10200 (forced air, manual temp adjust) with so so results. I think i have traced the problem to the manual "thermostat" not being a thermostat at all, but merely a timer circuit. Most people remedy this by keeping the room temp stable, therefore the heating rates stable. I stole the temperature control off of my kegerator for the late hatchers, it's the same one as in this link:


http://www.backyardchickenelearning.com/improving-little-giant-still-air-incubator/

Once they are out i will open up the cover and check the circuit for an actual temp sensor to confirm.
post #32 of 520
double post
Edited by PCalvin - 3/23/16 at 2:10pm
post #33 of 520
Anddd we have 2 pips!! yippiechickie.gif
post #34 of 520
Thread Starter 
Quote:
Originally Posted by PCalvin View Post

I am just finishing up a hatch with a little giant 10200 (forced air, manual temp adjust) with so so results. I think i have traced the problem to the manual "thermostat" not being a thermostat at all, but merely a timer circuit. Most people remedy this by keeping the room temp stable, therefore the heating rates stable. I stole the temperature control off of my kegerator for the late hatchers, it's the same one as in this link:


http://www.backyardchickenelearning.com/improving-little-giant-still-air-incubator/

Once they are out i will open up the cover and check the circuit for an actual temp sensor to confirm.

You are right; I have observed the same thing. That's why keeping the room's temperature stable is so critical to getting a good hatch. 

http://www.backyardchickens.com/t/1088873/styrofoam-incubators-club ---Come join us! 

~Below Paradise Poultry~

 

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http://www.backyardchickens.com/t/1088873/styrofoam-incubators-club ---Come join us! 

~Below Paradise Poultry~

 

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post #35 of 520
Thread Starter 
Quote:
Originally Posted by BantyChooks View Post

Anddd we have 2 pips!! yippiechickie.gif

YAY! I have 26 eggs in mine due to hatch this weekend. 

http://www.backyardchickens.com/t/1088873/styrofoam-incubators-club ---Come join us! 

~Below Paradise Poultry~

 

Reply

http://www.backyardchickens.com/t/1088873/styrofoam-incubators-club ---Come join us! 

~Below Paradise Poultry~

 

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post #36 of 520
Today is actually only day 18, but these are bantams. I was not expecting this, so humidity is only at 47%. I hope they are OK..... fl.gif
post #37 of 520
Thread Starter 
Quote:
Originally Posted by BantyChooks View Post

Today is actually only day 18, but these are bantams. I was not expecting this, so humidity is only at 47%. I hope they are OK..... fl.gif

I'm no expert but you need to bump that humidity up fast (I like to use warm wet rags!) , especially if you incubated "dry." Lost a quarter of a previous hatch due to too-low hatching humidity. Please show pictures when they've hatched!!!!!!!

http://www.backyardchickens.com/t/1088873/styrofoam-incubators-club ---Come join us! 

~Below Paradise Poultry~

 

Reply

http://www.backyardchickens.com/t/1088873/styrofoam-incubators-club ---Come join us! 

~Below Paradise Poultry~

 

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post #38 of 520
Yep, I just put in a dish of water with papertowels to prevent drowning in it! fl.giffl.gif


Will do.... All 11 eggs made it to lockdown! So I really hope I have a good hatch. fl.gif
post #39 of 520
Quote:
Originally Posted by beetandsteet View Post

Quote:
Originally Posted by PCalvin View Post

I am just finishing up a hatch with a little giant 10200 (forced air, manual temp adjust) with so so results. I think i have traced the problem to the manual "thermostat" not being a thermostat at all, but merely a timer circuit. Most people remedy this by keeping the room temp stable, therefore the heating rates stable. I stole the temperature control off of my kegerator for the late hatchers, it's the same one as in this link:


http://www.backyardchickenelearning.com/improving-little-giant-still-air-incubator/


Once they are out i will open up the cover and check the circuit for an actual temp sensor to confirm.
You are right; I have observed the same thing. That's why keeping the room's temperature stable is so critical to getting a good hatch. 

It is in fact a thermistor based thermostat control circuit but a very poorly and very cheaply designed one...

There are something thing you can do to sorta help it out but you can't turn a Pinto into a Ferrari, without exceeding the cost of replacing the Pinto with the Ferrari...

One thing that can help that is a cheap and free patch, is to unscrew the thermostat module and remove it, then take a bigger drill or knife and enlarge the hole that the variable resistor (aka adjustment knob) goes through so it no longer rubs, then reassemble... As designed (might vary by year) the foam rubs up against the resistor shaft so every time you handle the lid there is the possibility that the foam rubbing up against the shaft ever so slightly turns the shaft just that little bit, and due to the design this small turn of the shaft can have a big impact on temp stability... The same can happen due to changes in humidity and temp in the room that will cause the foam to expand and contract just that little bit and turn the knob... It might sound far fetched that this would happen but it can and does happen...

FYI I'm a freelance electronics engineer by trade wink.png
post #40 of 520

The foam CTE moving the resistor does make sense. I would have bet money there wasn't a sensor in there. Hopefully their digital controls are better, it would be nice if they had a calibration feature. I think I will stick to the $16 aquarium controllers. 

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