ESS Profile modification for dual fan

[Sentinel]

Hi,

I recently modified my ESS goggles because they were fogging too much (even with special products and foam removed).

I found some parts at my local electronic parts retailer. The parts cost about 35$ for a single fan setup and about 50$ for a double fan setup. Compare to the price of the original ESS Turbofan (+/-200$).

What I used:

-2x 25mm x 25mm computer fans (about 20$ each)
-9V battery casing (1.79$)
-9V industrial battery (2$)
-slide on/off swith (0.79$)
-Hockey tape
-Electrical tape
-Hot glue
-solder iron

The 25mm fans fits perfectly in the side part of the goggle just behing the elastic band. Rest is improvisation... but it works and it's really powerfull.

Results:

Don't hesitate to pm if you have some questions

[SC_SY]

Any significant change in weight?

[Sentinel]

no not significant on the goggles itself since the fans weight about 50grams (or less not so sure about it but very light). The weight is on the elastic band because of the battery but the band is tough enough to support it without being pulled downside.

[swatt13]

how about noise? i know the jt paintball goggles cooling fan is extreemly noisey. a constant a audible "wrrrrrr" youd be stalking along and be like "wait do you hear that?
sounds like a toy airplane!" lol

[LUTNIT]

as long as you get the good 20mm fans you cant hear it from any further than 3-4 feet so long as a twig doesnt get caught in em. When your wearing them you can hear a constant slight buzz that I have mistaken for a plane flying in the distance at times. I have the fans mounted on the top instead of the sides and have been using this setup for a few games so far in temperature ranges from 15-35 degrees and humidity as high as 90% with zero fogging. Its actually so good that there is a draft through the goggles (the fans are sucking out) and at times my eyes tear from being too dry. My only problem is I need to swap the 9V every 4 hours so I end up going through one and a half batteries each game minimum.

Anyone that knows electroics, know how to greatly increase battery life with only slightly reducing fan speed? I only know the very basics of electronics, currently have the two fans wired in series at the moment, when in parallel their rpm's go through the roof and I'm afraid I'll burn em out plus they are as noisy as hell.

Note to those that say goggles fans crap compared to better goggles, it wasnt necessarily the goggles that fogged up all the time, it was my glasses. I am looking to get some RX inserts for a better pair of goggles (currently only have ESS Tacticals) but dont have the spare cash at the moment.

[swatt13]

you need to wire in a resistor, or even a diode as far as i know... im no expert tho.

[Flint]

Their are veriable resistors that can be bought at electronics supply shops and are very small that you can mount on the side of your battery holder and use it to turn up or down your fan speed with your finger nail, I'll try to find a product code in my mouser catalog and get back to you on that one!

[Swatt Six-Four]

sry but all you would do by putting in the resistor is spliting the voltage between the fan and the resistor. While it would slow down the rpm it would actually kill the batery faster. you can buy low rev comp fans just shop around. Nice install btw looks nice imho

[LUTNIT]

I have 20mm fans in both lowspeed (5000rpm maybe?) and hispeed (13 000rpm), the hispeed ones are currently on my goggles but not running anywhere near 13 000rpm but the lowspeed fans wont even turn on 9V when they are linked in series, when put in parallel they spin way too fast (both fans are rated for 5V) and make a hell of a lot of noise.

To my understanding when in parallel both fans are recieving 9V, when linked in series they are each recieving 4.5V. Of course this is just "to my understanding" which is a VERY basic understanding.

[Sentinel]

Sorry I made a mistake. It was not 20mm fan but 25mm.

To awnser your questions and comments:

The noise is there but not so loud. The fan speed is under 7000 rpms actually so you can notice the sound at 3 feets. I found out that it doesn't make much sound than the ESS Turbofan that my teammate own. Also, the fact that the fans are mounted in the sides reduces the sound dispersion cause there is the band that cover it up and the glass of the goggles that makes obstacle to the sound. I found that putting a kind of adjustable limiter is quite a good idea, I will look to see what's available to mount one. Till then I will use the fan in intermittence when needed.

Like LUTNIT said, i'm wearing glasses too and they are generally fogging before my tactical goggles that's why i was looking to add fans.

[ezcreation]

Hey guys

I am selling a double fan FANZ kit which can be attached to any mask with top ventilation. The idea is not new, there are many forums where it s posted how to do it. What I am offering is a made package where you just have to attach it to your mask, put a 9V battery in and there you are for 12 hours of continuous air flow preventing fogging. Personnaly I have a DF FANZ on my profiler and it works awesome!



If you want to make it yourself I will gladly give you some tips. If you want to enjoy a well made kit, please contact me. You can see reviews, pictures and videos on http://www.ezcreation.ca

[/u]
Single Fan: $17US
Double Fan: $20US
Shipping: $9 - For whatever reason with the Canadian Post system, it s the same cost to ship 1 or 7 so I will gladly make one fixed cost for shipping, whatever the order number is.



Feel free to contact me via email at ubedos@yahoo.com if you have questions, or you can add me on msn under ubedos@hotmail.com

[vatek]

Man, I would hate to get a BB in there while those fans are running.

[Ibby]

I bought the ESS Turbo Cams. Sure they're expensive, but they're worth it because 1) I value my remaining eye and 2) I like being able to see without anything fogging up.
With the original lens, the goggles remained fog free for a few uses. Eventually the inside coating wore off and the lens fogged like any other, although the fan took care of this quite well. I did get sick of this setup though, so I bought a new thermal lens from Seals Action Gear, and ever since fog is a thing of the past. I sweat like a pig and I've never come up against any goggles/glasses that I haven't been able to fog up, except for this setup. I barely have to turn the fan on anymore, which is great. This might be something folks will want to try out along with installing fans.

[Slick]

Nice set up Sentinal. I was thinking of trying this same thing back a few years ago. I had one of those PC fans that pushed air through sideways. I ended up pulling the tiny wires out of the fan and they were to tiny to soldier back on. I ended up just going with a fan on top.

Anyways I just wanted to say I think you could have done it with just one fan. Would have only take maybe 10 seconds at the most to clear all the fog away moving from right to left.