Helmet fan set up

mike bike

Jr Member
I just put together a little fan circuit, i noticed the battery gets a little warm when its on is that normal? Does anyone have mounting tips for attaching it?
Im using a 9v battery, a toggle switch that the contacts are rated at 125vac 1a at 250VAC and a 12VDC mini fan.
put those details incase it was needed either to check the specs or if anyone wanted to know. I got them at radio shack for like $5
 

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Dirtdives

RXO & Keeper of Con Lists
405th Regiment Officer
Community Staff
You should switch to a 3 AA battery pack......a 9 volt will give the fan a lot of power but it will die very quickly. That is why the battery is warming up.
 

Dirtdives

RXO & Keeper of Con Lists
405th Regiment Officer
Community Staff
I haven't finished my own helmet yet but I'm told that the 3 AA pack lasts for hours.....long enough for you to enjoy a Con w/o battery issues. But always bring spares!!!
 

FlyinPhil

Marketplace Supervisor
Community Staff
I haven't finished my own helmet yet but I'm told that the 3 AA pack lasts for hours.....long enough for you to enjoy a Con w/o battery issues. But always bring spares!!!
Yup, I run a 3 AA pack that powers 2 5v fans and 2 LEDs in my helmet. I have a switch that allows me to easily turn the fans and LEDs on independently, and it lasts me a weekend of trooping in the summer. I would say I only run the fans for 2-3 hours a day max, though.
 

CrimsonViper97

Member
Out of curiosity what size fan are you using and where did you mount it? Never done it myself but I want to in my ODST helm.
 

mike bike

Jr Member
Out of curiosity what size fan are you using and where did you mount it? Never done it myself but I want to in my ODST helm.
I have one that is probably an inch-inch and a half square. They are usually used in computers. If you type mini computer fan in amazon or eBay you will find them. If you have a radio shack near you they will have them. The one near me was closing the next day, so no more radio shack for me haha
 

Dirtdives

RXO & Keeper of Con Lists
405th Regiment Officer
Community Staff
Or if you are luck enough to work in a company that occasionally throws out computers........salvage.....it's free!!
 

FlyinPhil

Marketplace Supervisor
Community Staff
I believe i picked up my little 5v fans on ebay for $3-4 each with free shipping. The nice thing is that a 3-AAA battery pack puts out 4.5 volts, so no resistors are needed. They are about an inch square, and 1/4" deep. I'll see if i can find a link for you guys.

Edit: This link is what i purchased. the airflow isn't crazy, but its enough to put a light breeze on your face and pull fresh air in through a vent or two.

5V 2Pin ph2.0 5cm 50mm 50x10mm Mini DC Brushless Computer Cooling Fan 9 Blades | eBay
 
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thesuperninja2

New Member
What do most people use for a Master Chief visor? I'm making a Master Chief helmet and i need a visor. I'm looking for something kinda cheap.
 
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