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12-19-2006, 03:54 AM
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#1
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Montana Master
Join Date: Feb 2004
Location: New Braunfels
Posts: 664
M.O.C. #920
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Computer Fan Motor
Last year someone posted information regarding replacing the exhaust fan motor (stove) with a computer fan motor. I thought it was Steve R. or Harleyrider. I did a search without success...if anyone has this info I would appreciate you posting it again.
Thanks,
Weldon
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12-19-2006, 04:10 AM
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#2
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Montana Master
Join Date: Jul 2005
Location: Fort Myers
Posts: 5,933
M.O.C. #4282
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Someone did replace this noisy fan with a variable speed (rheostat?) much quieter fan. I also can't remember who posted that, Weldon. Hopefully we will get a response as I am also curious about this.
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12-19-2006, 04:16 AM
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#3
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Montana Master
Join Date: Jul 2006
Location: K.C.
Posts: 11,731
M.O.C. #5980
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Weldon, I have on my list of things to do, a 2 speed fan.
You can install a quieter fan, a smaller fan, but the reason for the fan is to remove smoke and grease laden air, the position of the fan, close to the outside and close to the stove, with the associated 'echo' chamber of the little enclosed area, is going to be noisy IF you move enough air to be effective.
I think one is spinning their wheels if they try to change the law of physics. It's a balancing act of noise, versus CFM air removal.
A 2 speed fan will reduce the air noise if you only need a small venting session, when coking heavy smoke producing foods, kick er on high and endure.
Our next door neighbor won't even cook inside if they need a fan, a little overboard, but that's their choice I guess.
Ozz
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12-19-2006, 05:00 AM
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#5
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Montana Master
Join Date: Oct 2006
Location: Choctaw
Posts: 530
M.O.C. #6364
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I've not opened up my vent hood but I'd bet that the fan used is similar to the bathroom exhaust fan meaning its the cheapest on the market. Thermaltake makes 12 VDC CPU cooling fans that have a greater than 70 CFM rating but are the quietest as well as the best built on the market. They come in all sizes from 60 mm up to 120mm and might work for you
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12-19-2006, 06:41 AM
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#6
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Montana Master
Join Date: Feb 2004
Location: New Braunfels
Posts: 664
M.O.C. #920
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Hank, Thank you much..,this is exactly what I was thinking of.
Those fans in the Montana are entirely too loud.
Thanks again,
Weldon
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12-19-2006, 12:13 PM
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#8
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Montana Master
Join Date: Nov 2002
Location: Oceanside
Posts: 20,028
M.O.C. #20
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A 120mm computer case fan (muffin fan) is what I used in the bathroom of our 3295RK. It was very, very quiet. You could barely hear a hum with the water closet door closed and only if you stood very close to the door. It also pulled out more air than the original fan. We used it when showering. Be sure it's a 12v fan. All I did was remove the old fan, mount the new one, and splice to the same wires the old one used. I was able to use one existing hole and drilled two more to anchor the fan on three corners. You pretty much have to be up on the roof to mount the fan. You have to remove the screws in the surround in the water closet and drop the trim to access the fan from below, then finish from above.
In our 3295 the range hood fan used the same fan but I never got around to changing it out. I wouldn't think it would be too difficult.
The fan in our 3400 is pretty quiet and effective so I've not bothered to change it. That's both the bathroom fan and the range hood fan. Keystone went with a much quieter fan.
I recommend you get a fan with ball bearings. They're very quiet and last a very long time. The fan in the 3295 was there for almost 4 years including 3 1/2 of fulltiming. Lots of use with no problem.
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12-19-2006, 12:27 PM
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#9
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Montana Master
Join Date: Feb 2004
Location: New Braunfels
Posts: 664
M.O.C. #920
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Steve & Steve,
Thanks for the info on the fan. I plan on replacing both exhaust fans
Weldon
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12-19-2006, 12:48 PM
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#10
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Montana Master
Join Date: Apr 2004
Location: Apple Valley
Posts: 1,574
M.O.C. #1358
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I might have to look into this idea - I have boxes full of fans along with controllers that run on 12v. And 12v sounds like a good way to leave the bathroom vent too in case of a need on the road or boondocking.
120's definitely move more air and make less noise than the smaller models spinning faster. There are many models to choose from.
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12-19-2006, 01:17 PM
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#11
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Montana Master
Join Date: Jul 2003
Location: Clearwater
Posts: 10,917
M.O.C. #420
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Another addition to the Show and Tell page.
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12-19-2006, 02:12 PM
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#12
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Montana Master
Join Date: Jul 2005
Location: Fort Myers
Posts: 5,933
M.O.C. #4282
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We got our 3400 in July. Looks like we were in between the quiet fan revolution at Keystone... We got the quiet bathroom fan, but they still were installing the modified jet turbines in the range hood. If Cheryl is standing or working in the kitchen with that fan on, you can forget trying to talk to (or even yell at) her.
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12-20-2006, 12:10 PM
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#13
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Montana Master
Join Date: Nov 2002
Location: Oceanside
Posts: 20,028
M.O.C. #20
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Ozzie, the OEM fan is 12v so it's a straight swap. Pretty easy to do. I did Montana Sky's while we were at the Goshen rally this Fall. It took maybe 20 minutes or so.
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