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04-27-2023, 04:10 PM
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#1
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Mini-Skoolie
Join Date: Sep 2020
Location: Minnesota
Posts: 18
Year: 2001
Coachwork: International
Engine: DT466
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Portable Vent Fan Prototype
Here is my prototype of a removable vent fan for my school bus windows. It currently has 2 PC fans and a speed controller. Overall this works better than any "rv vent fan" I've come across AND you don't have to cut any holes for it. I used Noctua PC fans so even at max speed it is dead quiet. The final version will look a lot nicer, I will add a third fan and a switch to reverse the direction. While the CFM is lower than standard RV vent fans at 360, I feel the portability makes up for it. I could move the unit to any window in my bus for example while I'm cooking. Having two of these would likely out perform any RV vent fan. The price for one of these including my time building it is around $100. What do you guys think about these? Have you made your own versions or would you find something like this useful?
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04-27-2023, 06:19 PM
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#2
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Bus Crazy
Join Date: May 2016
Location: Grayson County, VA
Posts: 1,437
Year: 1996
Coachwork: Amtran
Chassis: International
Engine: DT466
Rated Cap: 65
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That's a great idea for above the stove. I've knocked around the idea of a flip-down vent fan with small fans like that, but I like that yours is removable and would be easy to stow away. Great job!
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04-28-2023, 02:26 AM
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#3
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Bus Crazy
Join Date: Jun 2016
Location: Orange County, CA
Posts: 1,423
Year: 1990
Coachwork: Crown, integral. (With 2kW of tiltable solar)
Chassis: Crown Supercoach II (rear engine)
Engine: Detroit 6V92TAC, DDEC 2, Jake brake, Allison HT740
Rated Cap: 37,400 lbs GVWR
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I did something similar-ish for the window behind my cooktop. I made a self-contained housing that locks securely in place when the window is dropped down to its first detent, but it can be easily removed in a few seconds if needed. It contains eight 80mm computer fans, four of which are medium-flow and four are high-flow. To prevent rain or outside air coming in I pull a handle that opens a flap and the first four fans come on, then if I pull it further the other four fans come on. I think it will work just fine, and it doesn't need any roof penetrations. So far, so good!
John
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07-23-2023, 05:26 PM
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#4
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Skoolie
Join Date: Mar 2023
Location: Arizona
Posts: 151
Year: 2008
Coachwork: Collins Grand Bantam
Chassis: Chevrolet
Engine: Chevrolet 6.0 gas motor
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I am interested in something like this, want to eliminate any roof holes and my bus is staying stock with regular slide down bus windows
pictures of more setups please
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07-23-2023, 06:00 PM
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#5
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Skoolie
Join Date: Mar 2022
Location: Middle TN
Posts: 157
Year: 2008
Chassis: IC RE (PB30500)
Engine: Maxxforce DT
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If you want something that already exists for cheap. It won't be as powerful but it works.
Solar Powered Vent Fan $27.99 on Amazon
It's designed for car windows
__________________
2008 IC RE 40ft w/ Maxxforce DT and Allison 3000 PTS for fulltime living w/ a family of four.
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07-23-2023, 06:12 PM
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#6
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Skoolie
Join Date: Mar 2023
Location: Arizona
Posts: 151
Year: 2008
Coachwork: Collins Grand Bantam
Chassis: Chevrolet
Engine: Chevrolet 6.0 gas motor
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Cool, will check that out
Yes, I’m hoping to find something already built so I don’t have another project lol
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07-23-2023, 08:37 PM
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#7
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Bus Crazy
Join Date: Mar 2017
Location: arkensas
Posts: 1,109
Year: 1997
Coachwork: bluebird
Chassis: chevy
Engine: 3116 catapillar
Rated Cap: 71 now 2 humans 1 cat
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30 dollar 16inch reversable radiator fan with a 16 dollar varable speed controller can move much more air than any computer fan. used this on hot days to cool and exhause weld fumes. i can replace the air in the whole bus in 30 seconds on high
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07-23-2023, 08:43 PM
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#8
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Skoolie
Join Date: Mar 2023
Location: Arizona
Posts: 151
Year: 2008
Coachwork: Collins Grand Bantam
Chassis: Chevrolet
Engine: Chevrolet 6.0 gas motor
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Interesting, I need to lower the windows and see what the dimensions are there
And will have to figure out power sources
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07-23-2023, 09:41 PM
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#9
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Bus Geek
Join Date: May 2009
Location: Columbus Ohio
Posts: 19,831
Year: 1991
Coachwork: Carpenter
Chassis: International 3800
Engine: DTA360 / MT643
Rated Cap: 7 Row Handicap
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Quote:
Originally Posted by mmoore6856
30 dollar 16inch reversable radiator fan with a 16 dollar varable speed controller can move much more air than any computer fan. used this on hot days to cool and exhause weld fumes. i can replace the air in the whole bus in 30 seconds on high
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I think their idea was not cutting holes in the roof.. and im assuming most people cover or replace their hatches in some way since they are sources of leaks..
the Defrost on my DEV bus takes in 100% fresh air if i want it to.. and leavingthe bus parked wit hthe defrost fan on low actually does help it stay a bit cooler and gives the AC an easier time....
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07-23-2023, 11:46 PM
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#10
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Bus Crazy
Join Date: Mar 2017
Location: arkensas
Posts: 1,109
Year: 1997
Coachwork: bluebird
Chassis: chevy
Engine: 3116 catapillar
Rated Cap: 71 now 2 humans 1 cat
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Most do not cover the hatches and rad fans come in different sizes and can be used in a window too. Never assume
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07-24-2023, 02:38 AM
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#11
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Bus Geek
Join Date: Sep 2018
Posts: 2,831
Year: 2007
Coachwork: Thomas Built
Chassis: Minotour
Engine: Chevy Express 3500 6.6l
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Yah! Radiator fans!
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