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Old 02-08-2016, 10:44 AM   #1
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Compressor Question

I have a Ram 2500, and I am new to 3/4 trucks. I see that the tires are supposed to be inflated to 80psi. I went to multiple gas stations where their psi did not even go that high to select. I can only get them filled at the dealer?

Which brings me to my next question. What size air conpressor can I get that will inflate my truck tires, trailer tires, and assist me with blowing out the water system for winterization for the trailer? Would be nice to get something in a case that I could throw in my truck, but not sure if it will be powerful enough? Will a small conpressor be overkill? Product model reccomendations would be great. Thank you all!
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Old 02-08-2016, 10:51 AM   #2
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We have a onboard Viair compressor with tank mounted in our tool box. It has no problem with 150 psi. I have one line run through an adjustable regulator with a QD in the running board. Carry a 50' hose which reaches all tires on truck and whatever trailer we haul. I've used this thing for tires, pool toys, bike tires, blowing dirt off kids Etc. Only way to go. It's wired into one of the dash switches. Of course feeds a large set of train horns underneith. Could also feed additional air bags if I needed them.
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Old 02-08-2016, 11:01 AM   #3
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We have Ram 2500 as well. We currently have a pancake style portable compressor that will generate up to 130 PSI with 2 gallon capacity. This will inflate your tires no problem. I would make sure to get a good digital or a dial guage (with reading up to 150 psi), and not the pencil style. I have a digital one that is very accurate to .5 of psi.

Regarding using this on your rig's water system, I would be very cautious. The internal plumbing of most trailers is rated between 40 to max of 50 psi. Using a compressor, without a pressure regulator, could blow your plumbing. Be very careful!

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Originally Posted by borninblue View Post
I have a Ram 2500, and I am new to 3/4 trucks. I see that the tires are supposed to be inflated to 80psi. I went to multiple gas stations where their psi did not even go that high to select. I can only get them filled at the dealer?

Which brings me to my next question. What size air conpressor can I get that will inflate my truck tires, trailer tires, and assist me with blowing out the water system for winterization for the trailer? Would be nice to get something in a case that I could throw in my truck, but not sure if it will be powerful enough? Will a small conpressor be overkill? Product model reccomendations would be great. Thank you all!
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Old 02-08-2016, 11:09 AM   #4
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Quote:
Originally Posted by tularockstar View Post
We have Ram 2500 as well. We currently have a pancake style portable compressor that will generate up to 130 PSI with 2 gallon capacity. This will inflate your tires no problem. I would make sure to get a good digital or a dial guage (with reading up to 150 psi), and not the pencil style. I have a digital one that is very accurate to .5 of psi.

Regarding using this on your rig's water system, I would be very cautious. The internal plumbing of most trailers is rated between 40 to max of 50 psi. Using a compressor, without a pressure regulator, could blow your plumbing. Be very careful!
Thank you very much! So what would be the minimum PSI you would purchase? Would 100 be OK? Since I know the trailer tires will be less then my truck's PSI? Any other attachments you suggest? Isn't there some in line gauges I could use with the compressor while inflating things?
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Old 02-08-2016, 12:20 PM   #5
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Good question. Come to think of it, some of the newer portable compressors do come with an adjusting knob that you can limit the pressure to certain PSI. So, if you only need 40-50 psi, just adjust the knob accordingly.

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Thank you very much! So what would be the minimum PSI you would purchase? Would 100 be OK? Since I know the trailer tires will be less then my truck's PSI? Any other attachments you suggest? Isn't there some in line gauges I could use with the compressor while inflating things?
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Old 02-08-2016, 12:27 PM   #6
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I have a Home Depot small compressor that is on the wall in the garage for the cars, toys, etc and use it for the truck and trailer tires. I think it is like a 1 gallon with 120 psi. It has the regulator knob on it and a pressure gauge. I use it to blow out the water lines and set it at between 25 and 30 psi. Done this for 8 years without creating issues.

On the road, I have a portable compressor that clips onto a vehicle or rv battery. It was a high pressure unit I bought at Costco. Kind of like a cheap knock off of a Viair compressor. It's slow, but it does what i need and is easy to haul around.
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Old 02-08-2016, 12:32 PM   #7
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On-board Air (Viair or similar) would certainly be convenient and could be used to power other things (airbags and air horns come to mind). A pancake compressor would require a 110 AC source to use and may be a bit bulky if you want to take it along and are short of storage. A portable 12V DC compressor is also an option - the upsides are small, inexpensive and 12V capable, on the downside they tend to be slower.
I would like on-board air but most likely wont go that route.
I'm currently in the 12V compressor crowd and all I can say is that it works.
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Old 02-08-2016, 12:44 PM   #8
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My Ram does have an option for an actual plug on the dash. Does this open my options up for other models?
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Old 02-08-2016, 12:58 PM   #9
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Not enough amperage on dash plug for a compressor.
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Old 02-08-2016, 12:59 PM   #10
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I have an electric compressor I used for my pneumatic tools that I take with me. It's more than enough but big and bulky.
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