โDec-10-2009 06:16 PM
โNov-04-2010 08:27 AM
TreeSeeker wrote:Yes I have seen them and had planed on buying one, This is a great Lil invention.
You may also be interested in this special vent design that doesn't use a fan.
360 Siphon
Be sure to look at the video (link at middle of page).
I have not used one of these but I am planning to replace my black tank vent with one.
โNov-04-2010 08:24 AM
tonyandkaren wrote:That sounds like a nice setup, I think I would worry to much about a break in the system and the water getting into the RV from the motor, If it was ran under the rv then maybe up through the floor might be ok Its raining and cold here so I just been sitting around thinking of different things some I may try and most I will not but there still fun to think about, It helps to keep the brain greased up and working smooth.:h
Trucker - consider another use for the fans. Tony made a axillary heater system for our class C using the engine coolant to heat the motorhome box as we drive. It's a fairly simple modification and works really well. He ran heater hose from the engine and used a heater core installed under one of the dinette seats with a 12 volt fan in series with a thermostat on the wall and a fan switch on the heater core so that it only runs when the core is hot. Check your fans to see if they work okay with your 12 volt system. We bought one from Radio Shack that didn't work right. The guys from Radio Shack said that it was because it required a lower starting voltage.
โNov-03-2010 09:07 PM
โNov-03-2010 06:36 PM
4Eddielee wrote:Yeah I would say your right, It sure is just something else to keep up, I think the plastic that I have is about 6 mil or close to it, I believe I will still try the PC fan in the Pipe because it would be just under the cap on the roof top easy fix if it go's bad and cost is $0 Just something I thought would be kinda cool.
OldTrucker63 - I think you're wasting your time with the two computer fans. Just put 6mil plastic sheeting on the inside (after the insulation goes in) and under the paneling you're going to nail up to pretty-up the inside. By the way, I would figure where your cabinets will go and put "nailing" blocks in the framing to screw into after the paneling goes on. Luan paneling is a bit thin to hold any cabinets you'll want to install in that rig.
That sewer vent fan will corrode mighty fast from the sewer gas going thru it. Again, I think you're wasting your time. If you do go ahead with either of the fan ideas, make sure you leave plenty of access to them for repair or whatever... JM2cents.....eddielee
โNov-03-2010 02:31 PM
TreeSeeker wrote:
If the insulation is properly installed there should be no room for air circulation. Insulation's purpose is to prevent air circulation. Thus, if there is room for air circulation, then there will be heat loss. Using a fan would increase the heat loss tremendously.
And as 4Eddielee said, a plastic film should prevent moist air intrusion into the wall.
You may be interested in this fan specifically designed for the vent:
Stainless Steel Roof-Mounted Holding Tank Deodorizer Fan
โNov-03-2010 02:16 PM
โNov-03-2010 01:52 PM
โNov-03-2010 01:34 PM
โNov-03-2010 09:21 AM
โNov-03-2010 09:16 AM
โNov-03-2010 09:14 AM
TyroneandGladys wrote:This was a lot of info, Thanks this helps a lot man.oldtrucker63 wrote:
I have been thinking about installing two Computer fans inside the walls and wire them on there own switch, The fans will be right at the metal outside wall and can let a little air flow through the walls at the metal, This should help dry out any condensation that occurs on the metal, The way this metal is shaped air will flow behind the wall studs with no problem, There will be the Insulation and then a liner of plastic and then the wall paneling This will keep any heat/Cooling away from the metal and help keep condensation to a minimum.
Condensation Fact Sheet for Metal Buildings
http://www.insulation.org/metalbuilding/pages/design/CondensationFacts.html
โNov-02-2010 07:25 PM
john b wrote:
It is a great idea to try to move air around to keep it dry But I believe it will be hard to move air with no relief opening to blow it out of or an intake to draw from as I believe it would just cavitate and not do much of anything. But I have been wrong before once or twice Ha ha ! good luck if it will work! Doing great job Trucker keep en coming we Like to follow as you are great entertainment and teacher too!Jb
โNov-02-2010 06:15 PM
oldtrucker63 wrote:
I have been thinking about installing two Computer fans inside the walls and wire them on there own switch, The fans will be right at the metal outside wall and can let a little air flow through the walls at the metal, This should help dry out any condensation that occurs on the metal, The way this metal is shaped air will flow behind the wall studs with no problem, There will be the Insulation and then a liner of plastic and then the wall paneling This will keep any heat/Cooling away from the metal and help keep condensation to a minimum.
โNov-02-2010 05:59 PM
oldtrucker63 wrote:
The PC cooling fans are 12 volts at 1.7 watts and they would move a lot of air, The fan will not have any access to inside or outside air they would only move what air is inside the wall.
โNov-02-2010 05:49 PM