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    Another OBW Project

    I have had my roof-mounted tanks out in mid-20s temps overnight without a problem, but days were around 50. I just make sure there is expansion room inside the tank in case it freezes. The larger the diameter of your pipe, the less susceptible to freezing you will be.
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    Another OBW Project

    There won't be any superchilling, regardless of air speed, unless there is evaporative cooling involved. The tank will stabilize at whatever the ambient temperature is, even when moving. If you expect freezing temps, leave a bleeder valve open and don't completely fill the tank so that it...
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    Another OBW Project

    No weld spatter or metal shavings in a Titan Tank because they are plastic, just like the factory tanks on many new trucks. Easy to flush with water and Simple Green, then more water, but OP says it's not for drinking water so not a big issue. Advantages include high capacity, internal...
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    Another OBW Project

    There are lots of different schedules of PVC pipe available, besides just the commonly available Schd 40 and 80. If you want PVC and impact resistance, look at Class 200 pipe. As wall thickness goes up, so does weight (duh!), but it can also slightly reduce the water capacity per foot. From...
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    Another OBW Project

    I don't have a SuperDuty, but I suspect you have a ton of space under that thing. Mine is a Dodge 2500 and I think I could siamese a pair of 4" pipes on each frame rail if I didn't already have aux batteries mounted under there. You could probably fit a 6" pipe nicely, but then it would be...
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    Solid HD Running Boards

    My '05 Ram Quad Cab is running N-Fab wheel-to wheel, but I think they are available in cab length only. These N-Fabs are vintage 2005 and are very well made. I ordered another set last year (2014) for a different truck and they are not as good. There are also ****tyBilts available from 4WP...
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    on board water system

    Look in the irrigation department at Home Depot. Lots of flow restrictors and small nozzles for drip systems. You can get a very usable stream from 1/4" drip line.
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    on board water system

    Regulating your air line is a piece of cake, just buy a manual regulator at the hardware store and install it on the outlet of your compressor. The problem is that you'll have to remember to turn it down for the water tank/can and then up again for tires and such. Bit of a pain, and those...
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    on board water system

    The higher you can mount the tank, the better gravity will work for you. If you want to mount it low, you might need to use a small 12V pump to get the water to where you want it. Another alternative might be a small siphon pump driven by a cordless drill. But then you have to carry the drill...
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    on board water system

    With a safety valve at low pressure, you are probably OK, but you still need to regulate the compressor to some pressure below the limit of the valve. Probably fine if the safety valve is protected from weather and dirt, but on an external tank like mine there is a good chance that the valve's...
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    on board water system

    I tried to post an answer to this yesterday, complete with OSHA citations and links, but got a message that it would not be posted until the Mods approve it. Don't know what happened or why, but the short answer is that pressurized PVC is dangerous. Water is not compressible and air is...
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    on board water system

    It will work, until it doesn't, and then it can kill you. The pressure rating you see for various schedules of PVC is based upon water pressure. Water is a liquid and is essentially not compressible. Air, which will fill the pipe as the water level drops, is a gas and is highly compressible...
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    Front Runner Under Rack Storage Slides for Maxtrax

    No pics yet, because I have not finished the installation yet. Got the idea last time I was stuck, when I realized I had to pull just about everything out of the back of the truck to get at the recovery gear. My roof rack is a set of three Yakima cross bars mounted to the top of the cab-high...
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    on board water system

    The water does get hot after a couple days in the desert, but the 4" fill plug allows me to dump ice cubes into the tank whenever we pass by a WalMart. I also have a 5-gallon insulated CamTainer hard mounted in the bed that will keep water cold/cool for several days. And a fridge/freezer in...
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    Front Runner Under Rack Storage Slides for Maxtrax

    I have long, aluminum sand ladders (think Camel Trophy Rovers) and was thinking about using those FrontRunner slides to store the ladders under my roof basket. The slides are short (34.5") and expensive, so I decided to use aluminum channel from the local metal supply. Cut the aluminum to...
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    Onboard Air picture thread. Show off your OBA systems

    Mine is a Warn SPI mounted in front of the radiator on my Dodge Hemi. 12CFM free air flow, 100psi working pressure, don't remember the duty cycle but have run framing nailers all day with no problems. Simple installation because the pressure switch and small tank are part of the compressor, so...
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    on board water system

    I went through this exercise during the summer and wound up building my tank out of parallel lengths of 6" Schedule 40 PVC and mounting it to the side of my roof rack. Bag awning is mounted to the driver's side and the water tank on the passenger side, so the whole rack basket is available for...
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    SKB 3i 1610-5 Hard Case

    Where are you?
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    Jerry can question

    Probably, but depends on the condition when you start. Be a good idea to check for leaks before you go to the trouble of sealing it.
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    Jerry can question

    Not likely, but not worth taking the chance. There are still a lot of old flashlights out there with sliding mechanical contacts. And the lights on gasoline tankers are not inside the tanks.
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