Working NCR Ranger Air Tank (Just add fans)
Remixed to use two fans and multiple air channels to create a vacuum effect and force air into NCR Ranger helmets. This was specifically made for the XCOSER helmet, but it will work with anything with an airhose port.
You'll need to drill out part of the helmet to be able to connect a hose. I used a drain hose from walmart. This requires modification of your helmet, so do this at your own risk. Make sure to seal the airhose coming from the pack very well.
Fans I used are dual 40mm USB powered fans and can be found here.