Topic: Replacing FARS Fan with Case Fan

[Herbaldew]

Is there a guide somewhere that I am missing to swap out my Davis FARS fan with a computer case fan (VP2+ w/ 24 hour FARS)?

Yet another Davis fan has quit and they are now over $100 including shipping.  I was going to try to replace just the motor, but Jameco now has a 1,000 unit miminum order.  Amazon is out of stock of the fan that is just like the Jameco and I'm not sure which other fans are OK to use.

Anyway, I can get a 12v wall wart and run a line from a nearby outlet to my ISS, so was thinking the case fan may be the best option.


Thanks

[ConligWX]

like this one

https://www.chatteris.biz/blog/davis-fars-upgrade-monitored-pc-fan/

[CW7491]

I highly recommend Cooler Guys. Any 80mm fan will pretty much work with very minor modification to the fan housing.

https://www.coolerguys.com/

[CW2274]

Yet another Davis fan has quit and they are now over $100 including shipping. 

LOL! You gotta be kidding me?! Tell me everything is fine.  Must be sold at the grocery store.   Unbelievable.

Here's what I use. Overkill, but works in my climate just fine. i'd shoot for the 25-45 CFM range. Don't go lees than stock.

https://www.coolerguys.com/collections/dc-12-volt-fans/products/sunon-80x25mm-high-speed-12v-fan-with-3-wire-3-pin-connector-pf80251-000u-g99

[JCA433]

This is the fan I use.  Seal the gaps around the fan.

https://www.amazon.com/gp/product/B07VWLSMN1/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1th

[Herbaldew]

Thanks all for the advice and links!

This is the fan I use.  Seal the gaps around the fan.

https://www.amazon.com/gp/product/B07VWLSMN1/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1th

That one grabbed my eye as well.  Contrary to my latitude, it gets rather southern soupy here on the Delmarva coast in the summer and the water resistance can't hurt.

Meanwhile, I scared up four case fans and three 12v warts in my "junk" drawers so cost so far is zero

I spent several minutes sanding and filing the case fan to get it to fit then got lazy... a quick snip even with the outside of the mounting bolt holes on the bottom end of the fan with diagonal cutters let it slip right in to place.

I didn't seal anything because I have to go back in and remove the nicad batteries and tidy up the wiring and it will hold a tissue up to the screen as is so I may just skip that part for now and see how it goes.

[CW2274]

Thanks all for the advice and links!

This is the fan I use.  Seal the gaps around the fan.

https://www.amazon.com/gp/product/B07VWLSMN1/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1th

I didn't seal anything

Granted, my fan is 60CFM, but I didn't seal it. Still sucks hard enough to hold an envelope easily.