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incubator fan

G

Gassracing34

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This is my first year breeding and I'm in the process of building an incubator. I looked at a bunch of plans and know what I need to get. I am using an old haire glass door small fridge.


I want to know where to get an incubator fan? Do I need 2 one at the bottom and one at top?

Thanks,
Ronnie
 
Go to any legitimate electronics store and pick up a DC fan or two. One should work fine depending on how big your incubator is. If it is on the larger side (bigger than a mini fridge) I would possibly go for two. Also depends on the size of dc fan you get. Hope that helps a little. Also make sure you pick the right size of tubs for the racks inside the fridge. What are you using to heat the fridge?
 
You can just use an old computer fan. You can run it at 12v, but it will probably be way to fast. Some take old cell phone chargers, which reduce the voltage to around 5v, and splice them into the fan. It works great. And if you want to get even more advanced, you can buy a variable voltage adapter and adjust your voltage to fine tune the fan speed:

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Thanks for making this thread because I'm in the same boat you are and I was just about to start a thread. Thanks
 
Thank everyone for you comments. It helped me alot it. I am making mine out of a old Pepsi display fridge. Like the ones on the counter at gas stations. It's about 3 and a hair feet tall should hold about 6-8 clutches hopefully.


I have 2 thermostats for it should I use a helix or herpstat the older one without nightdrop?
 
You might want a larger fan for that inc than a computer fan.
We use bathroom ceiling fans in our true cooler incubators, plug them into a rheostat/dimmer and you have the ability to fine tune the airflow so you can get even temperatures on all shelves.

We've also gone to a false wall in the back of the incubator so the flexwatt isn't exposed, so far they rock n roll steady as can be.
The fan draws air downward over the tubs and gets sucked in to the fan and blow across the flexwatt hidden behind the false wall.
The air flows out of the top in the back and gets drawn back down across the tubs again.

Flexwatt against back wall before false wall was added...
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False wall in place with a hole cut for the fan to fit in...
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Ready to plug into the thermostat
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I don't use a fan in mine but Its low to the ground and wide with flexwatt on every wall and on ceiling so it keeps heat uniform. Its basically the bottom shelf out of a closet that I put plexi glass on the front of and put sheets of insulation on every wall. LOL I'm one of those if it aint broke don't fix it kind of guys so I probably won't be changing anything for this years clutches.
 
If you do go with a DC computer fan wired to an old charger or other low volt adapter route be sure to check the fan spin direction and reverse the leads if needed. When I first plugged mine in the blade was spinning the wrong direction causing the curved blades to extend and they eventually rubbed on the housing wall and the fan motor burned out.

Also, sure a lot of other designs work as well or better but mine uses a PVC pipe in a back corner with the fan pulling air down it from the top to try to prevent temperature layers with top shelf hottest. I have a small hole covered in screen (to prevent flies) that goes into the pipe to draw outside air by the Bernoulli effect (a second small hole not into the pipe lets a little air out). Probably not necessary but at one point last summer I had my mini fridge packed with lots and lots of eggs. I also heat with a foot of 11" heat tape sandwiched between two large flooring tiles. The tiles hold a little heat to keep it from dropping so fast after I open up for a quick check.
 
Oh, and I have a square of insulation (not too big to leave space around edges) between the bottom shelf and the lowest egg boxes to prevent radiated heating from the tile/heating tape sandwich from cooking those eggs hotter than the rest.
 
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