So should I get a fan?

This weekend, I am getting a 4.5-odd-cubic foot, refridgerator for an incubator. I have 3' of Flexwatt that'll cover the back from top to bottom, and my Helix is just sitting here waiting. :) The unit has shelves that I will fit my 3 to 4 egg boxes in. I plan on adding the pop bottles of water to takeup space, etc.
Should I get a fan? Do I have to? I had no need for one in my 2-cube styro incubator last year, but I don't want to overdo it and have a huge ton of turbulence in there that might possibly vibrate or stress the eggs. Your thoughts??
Also! Do you have someone drain/remove the freon from your old fridges/freezers for incubating?

When I used a mini fridge as an incubator, I used a 3" computer fan from Radio Shack that I wired to a plug. The 4" fan ran too hot for the small space, but the 3" worked perfectly. I think it ran me $14.

I would. It could save you a lot of trouble and worry. You can make a 3" fan really easily for under $10 shipped. You can even run it at a lower voltage to further minimize what little noise and vibration you get. My frog tank uses 2 - 2" 5v fans and both are ran at 3v.

http://www.allelectronics.com/cgi-bi...LING_FAN_.html

http://www.allelectronics.com/cgi-bi...NSFORMER_.html

I will get a small 3-incher. I just don't want hot-spots in the incubator, you know? I might be able to just rip apart an old junk computer that we have here (that Mark was actually planning on using for target practice!) and use its fan?

I have a Coke Fridge that I plan on using as a bator this year. I had the guy remove all of the freon and the "guts" from it before I picked it up....Freon is nasty stuff...and I believe it is illegal to drain unless you are certified???

Jake, I can't see the links you posted at all. I've got a number of small computer fans that I've rescued through the years that I'd like to use in various projects, but I don't know how to hook them up without going through a computer power supply. Do those links show how to do that? If not, is there someplace I can find out how to do that without burning out the motors or something?

Mark

Quote:

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Originally Posted by MarkS

Jake, I can't see the links you posted at all. I've got a number of small computer fans that I've rescued through the years that I'd like to use in various projects, but I don't know how to hook them up without going through a computer power supply. Do those links show how to do that? If not, is there someplace I can find out how to do that without burning out the motors or something?

Mark

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Thats exactly what I wanted to know also.

Quote:

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Originally Posted by MarkS

Jake, I can't see the links you posted at all. I've got a number of small computer fans that I've rescued through the years that I'd like to use in various projects, but I don't know how to hook them up without going through a computer power supply. Do those links show how to do that? If not, is there someplace I can find out how to do that without burning out the motors or something?

Mark

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Yeah, they must have changed their catalog recently. The fans are really easy to connect. Just snip off the connectors on the transformer and the fan and touch the exposed wires to check the polarity. Once the motor powers on, you know what wires to connect, so you just tape them or use small wire nuts. Just make sure to get a A/C-D/C transformer thats at or below the fan's max input. If you cut one of the 2 wires near the adapter, you can ad an on/off switch.

Here are new links:
http://www.allelectronics.com/cgi-bi...60MM_FAN_.html
http://www.allelectronics.com/cgi-bi...NSFORMER_.html

http://a940.ac-images.myspacecdn.com...c8f91bbd8b.jpg

Thanks Jake, that helps a lot.

Cool, glad I could help. Also, some of the computer fans come with 3 wires. You should only need the red and black wires. Once you find the right wores and polarity you can cut off the 3rd wire. They are usually yellow.