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Old 06-10-2019, 03:02 PM   #1
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Itís getting hot in here...

Hi all ,
Iím looking to put in a fan on the bus because it getting hot. I have a pre existing hole thatís 10 x 8 vent, no fan that I would like to replace with a vent fan, but the opening is too small for the standard ones Iím seeing. The space of framed out so Iím wonder what would be the best method that is cost effective. Would cutting through the framing damage the body?
Or if there another option that wouldnít involve cutting through the metal framing?

Itís just hot and we need options thatís are low energy and cost efficient. Safety is also a thing so Iím hesitant about a window option.

So far we are looking at portable power stations to run the fan. 300 Watts 12V /24V DC

Here are a couple of pictures of what Iím working with. The first one if the opening from the inside and the second is the roof.
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Old 06-10-2019, 03:19 PM   #2
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Quote:
Originally Posted by Zelma View Post
So far we are looking at portable power stations to run the fan. 300 Watts 12V /24V DC\

300W seems like alot for what you're asking for.


I have a high speed AC floor fan running:
IMG_0243.jpg


Usage without / with:
IMG_0242.jpgIMG_0240.jpg

That's about 144w. On high. On AC, using my inverter.



If you can build something on the outside of the hole that makes it bug proof and rainproof, you could use a number of 12v computer fans to move the air. 200mm - 240mm is around the size you're looking for.
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Old 06-10-2019, 05:23 PM   #3
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MaxxAir or Fantastic Fan, do what it takes to install.
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Old 06-10-2019, 05:46 PM   #4
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Iíve seen a couple where people bought a fan, and cut a plywood frame. Take off front fan cover, cut out hole size of fan, attach fan to plywood, attach plywood to ceiling. Maybe put a cover on it for when youíre not using it.
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Old 06-10-2019, 05:50 PM   #5
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I’ve been considering a swamp cooler plan. Window mounted, removable. For that, I was considering a radiator fan. This one here is about 60 Watts and moves 2350 CFM.

https://www.summitracing.com/parts/prm-19120/
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Old 06-10-2019, 06:31 PM   #6
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Don't know where you reside, but unless you're in a semi-arid area with, at most, moderate humidity, the returns will be quite modest.
(Ya might consider filling in your user profile more fully...)
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Originally Posted by Danjo View Post
Iíve been considering a swamp cooler plan. Window mounted, removable. For that, I was considering a radiator fan. This one here is about 60 Watts and moves 2350 CFM.

https://www.summitracing.com/parts/prm-19120/
Not to be condescending, thought to mention you'll be loading the air with moisture, for later condensation...
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Old 06-10-2019, 06:33 PM   #7
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Originally Posted by john61ct View Post
MaxxAir or Fantastic Fan, do what it takes to install.
One of the best, most essential upgrades ever!
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Old 06-10-2019, 06:55 PM   #8
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Originally Posted by haz.matt.1960 View Post
Don't know where you reside, but unless you're in a semi-arid area with, at most, moderate humidity, the returns will be quite modest.
(Ya might consider filling in your user profile more fully...)Not to be condescending, thought to mention you'll be loading the air with moisture, for later condensation...
Snowbirding to follow good weather, primarily in arid places is my plan! But good point about swamp coolers and humidity.
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Old 06-10-2019, 07:05 PM   #9
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Originally Posted by john61ct View Post
MaxxAir or Fantastic Fan, do what it takes to install.
I like the idea of using the emergency roof hatch hole. Thanks for posting!
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Old 06-10-2019, 07:10 PM   #10
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Arid areas are where evaporative coolers rule! Majority of moisture will dissipate in the drier outside air, just open the windows when the Sun's setting and the world's starting to cool.
Exert your Goo-Fu on, homemade swamp cooler in a bucket, for an awesome solution/ application! Couldn't easily find the 1 I'd viewed b4, but they're all conceptually identical.
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Snowbirding to follow good weather, primarily in arid places is my plan! But good point about swamp coolers and humidity.
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