CiderPunk Posted August 31, 2018 Share Posted August 31, 2018 I had an idea for anti-fogging goggles, how does this sound... Rather than attaching the fan to the front of the goggles, where real estate is tight and possibly distracting, have the fan and battery pack attached to the goggles strap, behind your head, and pipe the air flow in silicone pipes to the front. e.g. A 5v blower fan, one of these https://www.ebay.co.uk/itm/5015-50mm-Turbine-Blower-Cooling-Fan-5V-12V-24V-DC-3D-Printer-/162547920907?var= a small usb power bank, a foot or so of 10mm OD , 8mm ID pipe, cable tied/hotglued to the top of my bolle X800 frame blasting the air downwards onto the lens via some holes drilled into the tube. 3d printed adaptors to fit the pipe on the end of the fan and some sort of enclosure to make it look a bit less crap Conventional wisdom has any fans sucking the rather than blowing, but I don;t think that'd work remotely. worth a try or batshit insnae? Link to comment Share on other sites More sharing options...
EDcase Posted September 1, 2018 Share Posted September 1, 2018 Unfortunately your idea will just be blowing air in your eyes... To work efficiently, the fan actually has to pull air OUT of the goggles. This allows fresh, cool air to be drawn in evenly from either upper or low vents. The air has to flow past the lens to pull the moisture away. This is why most fans are mounted on top and the vents are at the bottom. Using tubes reduces airflow efficiency to the fan would have to be more powerful = heavier so no real gain. Link to comment Share on other sites More sharing options...
CiderPunk Posted September 1, 2018 Author Share Posted September 1, 2018 yeah i think yer right, late night crazy ideas are crazy! Link to comment Share on other sites More sharing options...
Supporters Rogerborg Posted September 1, 2018 Supporters Share Posted September 1, 2018 Naysays will always say nay. I have one of those fans myself bought for exactly that purpose but putting it together hasn't yet bubbled to the top of my priority list as I wussed out and bought commercial fan goggles (then double glazed them for good measure). I'd want to run it on my Pyramex dual-panes rather than on goggles per se , as I'd prefer to wear them but they fog up on me after a while. It shouldn't take much airflow to keep them clear, and I like the idea of a row of holes along the tube. Getting a seal between the tube and the large rectangular aperture on the fan seems like the biggest challenge, as there's not much of a lip to work with. Tubing just eBayed: race you. Link to comment Share on other sites More sharing options...
MisterG Posted September 1, 2018 Share Posted September 1, 2018 On 01/09/2018 at 00:44, CiderPunk said: I had an idea for anti-fogging goggles, how does this sound... Rather than attaching the fan to the front of the goggles, where real estate is tight and possibly distracting, have the fan and battery pack attached to the goggles strap, behind your head, and pipe the air flow in silicone pipes to the front. e.g. A 5v blower fan, one of these https://www.ebay.co.uk/itm/5015-50mm-Turbine-Blower-Cooling-Fan-5V-12V-24V-DC-3D-Printer-/162547920907?var= a small usb power bank, a foot or so of 10mm OD , 8mm ID pipe, cable tied/hotglued to the top of my bolle X800 frame blasting the air downwards onto the lens via some holes drilled into the tube. 3d printed adaptors to fit the pipe on the end of the fan and some sort of enclosure to make it look a bit less crap Conventional wisdom has any fans sucking the rather than blowing, but I don;t think that'd work remotely. worth a try or batshit insnae? Worth a go, my fan googles and the ones I fitted to my paintball mask extract, rather than blow, so you might want to experiment. Cheers G Link to comment Share on other sites More sharing options...
Gumper Posted September 1, 2018 Share Posted September 1, 2018 https://centurionsafety.eu/product/concept-air-helmet-and-flip-up-visor-kit/ total head protection will fresh air. Battery powered Blower unit feeding fresh air to the back of the helmet which is feed to the face. Link to comment Share on other sites More sharing options...
EDcase Posted September 2, 2018 Share Posted September 2, 2018 I didn't poopoo anything. Just pointed out some physics to work with... Link to comment Share on other sites More sharing options...
Supporters Rogerborg Posted September 2, 2018 Supporters Share Posted September 2, 2018 7 hours ago, EDcase said: Just pointed out some physics to work with I'll use a Toyko Marui motor. Physics doesn't work the same for them. Link to comment Share on other sites More sharing options...
Hutchy85 Posted September 3, 2018 Share Posted September 3, 2018 There is a product like this already available, called the Exfog. I have one, works extremely well. It regulates the temperature inside the goggle to eliminate fogging and condensation. This has been a game changer for me. Old picture as I have the unit inside a little multicam pouch on the back of my lid now, but you get the jist. Link to comment Share on other sites More sharing options...
Root Admin proffrink Posted September 4, 2018 Root Admin Share Posted September 4, 2018 18 hours ago, Hutchy85 said: There is a product like this already available, called the Exfog. I have one, works extremely well. It regulates the temperature inside the goggle to eliminate fogging and condensation. This has been a game changer for me. Old picture as I have the unit inside a little multicam pouch on the back of my lid now, but you get the jist. tfw your goggles can run crysis Link to comment Share on other sites More sharing options...
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