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Bunkerhill 05-09-2021 07:30 AM

Viair compressors
 
Does anyone carry a Viair compressor to assist in inflating steer tires to pressures higher than the coach air system can provide? If you do carry this type of compressor, do you find it adequate, rated at 150psi, to fill steer tires to about 125 psi?
Thanks

Cousin Ed 05-09-2021 07:52 AM

We carry one and it can fell my steers to 130.

GeezerViz 05-09-2021 07:54 AM

Yes and yes. I like that the compressor is small and quiet but it is not fast and it can get hot. No problem inflating the steer tires to 125. I use the screw on connector (the part that screws on to the valve stem) otherwise I get a hand cramp if I have to go more than 5 psi.

garysfb 05-09-2021 11:38 AM

Quote:

Originally Posted by GeezerViz (Post 5744002)
Yes and yes. I like that the compressor is small and quiet but it is not fast and it can get hot. No problem inflating the steer tires to 125. I use the screw on connector (the part that screws on to the valve stem) otherwise I get a hand cramp if I have to go more than 5 psi.

That's a great idea! It seems to take about a minute per pound and isn't great for my back either. Headed for the store to get one, thanks!

clawsonbob 05-09-2021 11:47 AM

Air pumps.
 
The Viair units are arguably the most popular. They are very portable and seem to be of good quality. I elected a 120v 150psi Porter Cable (link below). While it’s bigger and heavier, the 120v AC powered units tend to be faster and a little more robust. I use “lock on” air chucks to avoid bending over and pressing on an air nipple.

https://www.amazon.com/AstroAI-Close...dDbGljaz10cnVl

https://www.pepboys.com/porter-cable...product/770833

garysfb 05-09-2021 12:06 PM

Quote:

Originally Posted by GeezerViz (Post 5744002)
Yes and yes. I like that the compressor is small and quiet but it is not fast and it can get hot. No problem inflating the steer tires to 125. I use the screw on connector (the part that screws on to the valve stem) otherwise I get a hand cramp if I have to go more than 5 psi.

That's a great idea! It seems to take about a minute per pound and isn't great for my back either. Headed for the store to get one, thanks!

RVFunlovers 05-09-2021 01:28 PM

I use a VIair compressor.

I use it on all RV tires, tow vehicle tires, and bike tires. I got the kit that is sold with it and it comes with an extra long hose. I connect my VIair to the 12V power in the from compartment on the drivers side.

The compressor is small and works great for the high pressure needed in the front tires. I have never tried to inflate a completely flat motorhome tire with the VIair but it works great for adding a few pounds if needed.

AggrevatedRv 05-09-2021 03:31 PM

2 Attachment(s)
I installed one of these, and it works great I can get all the pressure I need actually it will go up to 300psi but I dial it down to 180psi.Attachment 327785Attachment 327786

Dr. Mike 05-11-2021 05:41 PM

Quote:

Originally Posted by garysfb (Post 5744329)
That's a great idea! It seems to take about a minute per pound and isn't great for my back either. Headed for the store to get one, thanks!

Let me know where I can get one!

I tried mine out this weekend with the wand attachment and I let more air out than in!

While we are on the subject, I just discovered the coach air system this weekend. How do I use the system and what is the limit?

clawsonbob 05-11-2021 06:44 PM

Quote:

Originally Posted by Dr. Mike (Post 5747829)
Let me know where I can get one!

I tried mine out this weekend with the wand attachment and I let more air out than in!

While we are on the subject, I just discovered the coach air system this weekend. How do I use the system and what is the limit?

https://www.amazon.com/AstroAI-Close...dDbGljaz10cnVl

Limit is about 120 on a Coach system and ONLY when compressor is engaged. I believe my Porter Cable is 5-10 times faster. And does not require engine startup and running for 50 minutes

jmck1737 05-11-2021 07:31 PM

We use the Vair 450RV. It will bring my coach tires to 120 psi easily. I also use the screw on connector as it takes a minute or so per psi. Small light and perfect for RV. Make sure you purchase the size needed for your tires as the smaller ones have less psi and shorter duty cycle.

GeezerViz 05-11-2021 11:00 PM

The 450RV comes with the screw on connector. Here is the compressor and you can see the screw on air chuck, but I can't find it separately. https://www.viaircorp.com/portables/450p-rv-auto

jmck1737 05-12-2021 05:20 AM

They have several RV models now. The 450 is the largest and most powerful and will fill 22.5 class A tires and has the screw on connector. It has a longer duty cycle, 2 air hoses to reach all the tires of a class A and I believe goes to 150 PSI. They go down in size and duty cycle from there. My RV450 does a good job for a very small portable unit.

Maybe give Viair a call and see if they sell the screw on separately.

Manzfam 05-12-2021 05:50 AM

I also have the 450RV. Powerful enough to inflate over 125 but slow. My other comment is that it needs to be clamped to battery posts. Why not add a plug??

As an aside = I use my truck battery but would like some advice on how to clamp to my house or chassis battery?

GeezerViz 05-12-2021 08:00 AM

Quote:

Originally Posted by Manzfam (Post 5748285)
I also have the 450RV. Powerful enough to inflate over 125 but slow. My other comment is that it needs to be clamped to battery posts. Why not add a plug??

As an aside = I use my truck battery but would like some advice on how to clamp to my house or chassis battery?

I use my chassis battery. Open the rear bay door and I have easy access to the batteries. Just clamp on like you do with your truck. The hoses are plenty long enough to reach all tires. Access to the house batteries would be a chore, since they are behind an access panel in the middle of the coach.

lo-tek 05-13-2021 10:44 AM

Quote:

Originally Posted by GeezerViz (Post 5748445)
I use my chassis battery. Open the rear bay door and I have easy access to the batteries. Just clamp on like you do with your truck. The hoses are plenty long enough to reach all tires. Access to the house batteries would be a chore, since they are behind an access panel in the middle of the coach.

I've been clipping mine to my tow vehicle. I like your idea better.

jeff.herren 05-13-2021 10:51 AM

Viair recommends having the battery source running so there is constant power via the alternator to the batteries. Probably due to the length of the air process for 6 or 8 tires.
That being the case I start the toad and use that running vehicle as my source.
I'm sure with the pair of chassis batteries it's really not required to start the coach and idle but I don't want a long un necessary idle on the cummins. Def Head scared of long idles

garysfb 05-13-2021 12:01 PM

I use the posts in the small bay under the driver's side. I've never had to start up the coach, but I'm usually hooked to 50 amp.

GeezerViz 05-13-2021 11:50 PM

Quote:

Originally Posted by garysfb (Post 5749982)
I use the posts in the small bay under the driver's side. I've never had to start up the coach, but I'm usually hooked to 50 amp.

Ackkk... That is not a good idea. At least based on what I was told. I used to do that too untill I went to the Spartan Academy and both Big Mike and PJ said never, never, never, hook anything up to those posts. They are attached to your something or other main control module and if you hook up to it, you can short circuit that unit which is a multi thousand dollar repair. The newer coach's now have those posts hidden so no one will hook up to them. So I just use the chassis battery without the coach running and have been fine.

Mr_D 05-14-2021 12:20 AM

I have the 450 RV Viair for my 365/70 fronts that take 125 psi.
The rest take 85 psi.

YC1 05-14-2021 03:09 AM

I like mine but sure would like to have more volume to blow dust and sand out of the compartments and steps of the rv. You get about 5 seconds.

I have room for a small pancake type compressor and may add one of those.

If you search you can find a small mount for the viair. I do not bolt mine in permanently but do keep it on the perch off the floor so it does not take up precious space.

RVFunlovers 05-15-2021 07:02 AM

Quote:

Originally Posted by GeezerViz (Post 5750756)
Ackkk... That is not a good idea. At least based on what I was told. I used to do that too untill I went to the Spartan Academy and both Big Mike and PJ said never, never, never, hook anything up to those posts. They are attached to your something or other main control module and if you hook up to it, you can short circuit that unit which is a multi thousand dollar repair. The newer coach's now have those posts hidden so no one will hook up to them. So I just use the chassis battery without the coach running and have been fine.

Thanks for the info. I did not know that hooking up to those post are a risk. I will power my compressor from my chassis battery or tow vehicle battery going forward. Thanks for sharing.

Winemaker2 05-15-2021 07:39 AM

I considered them but opted for a 120V Porta Cable for about half the price. I didn't see the need / advantage of 12V as I always have 120V available on the MH. It might be different if I was an off road 4 wheeler.

Cruzer 05-15-2021 08:31 AM

1 Attachment(s)
It gets tough to air up steer tires to 120 PSI but I have a multiple of options. I installed the Pressure Booster as mentioned in an early post. That will allow pressures to increase up to double if needed. That lets me use my coach air to easily fill the tires with minimal time. It also gives me oil and moisture free dry air because the coach's air dryer filters the air.

For those times when I don't want to run the coach I use a Viair 450 12 volt compressor. But I mounted it in the compartment rather than go with the alligator clips. It's controlled by a solenoid coil that I control from a dash mounted illuminated mini rocker switch. There is a pressure cutout switch so I can actually leave it on for hours if need be to ensure that my air tanks stay full when using the Hadley air leveling rather than the Equalizer jacks. I can also top off the tanks prior to departing in the morning without having to run the big diesel and wake up the neighbors. This setup also saves me the room of storing a larger pancake portable compressor.

AggrevatedRv 05-15-2021 08:58 AM

Quote:

Originally Posted by Cruzer (Post 5752116)
It gets tough to air up steer tires to 120 PSI but I have a multiple of options. I installed the Pressure Booster as mentioned in an early post. That will allow pressures to increase up to double if needed. That lets me use my coach air to easily fill the tires with minimal time. It also gives me oil and moisture free dry air because the coach's air dryer filters the air.



For those times when I don't want to run the coach I use a Viair 450 12 volt compressor. But I mounted it in the compartment rather than go with the alligator clips. It's controlled by a solenoid coil that I control from a dash mounted illuminated mini rocker switch. There is a pressure cutout switch so I can actually leave it on for hours if need be to ensure that my air tanks stay full when using the Hadley air leveling rather than the Equalizer jacks. I can also top off the tanks prior to departing in the morning without having to run the big diesel and wake up the neighbors. This setup also saves me the room of storing a larger pancake portable compressor.



Very clean set up, good job.

RV Wanderers 05-15-2021 10:40 AM

Quote:

Originally Posted by Cruzer (Post 5752116)
It gets tough to air up steer tires to 120 PSI but I have a multiple of options. I installed the Pressure Booster as mentioned in an early post. That will allow pressures to increase up to double if needed. That lets me use my coach air to easily fill the tires with minimal time. It also gives me oil and moisture free dry air because the coach's air dryer filters the air.

For those times when I don't want to run the coach I use a Viair 450 12 volt compressor. But I mounted it in the compartment rather than go with the alligator clips. It's controlled by a solenoid coil that I control from a dash mounted illuminated mini rocker switch. There is a pressure cutout switch so I can actually leave it on for hours if need be to ensure that my air tanks stay full when using the Hadley air leveling rather than the Equalizer jacks. I can also top off the tanks prior to departing in the morning without having to run the big diesel and wake up the neighbors. This setup also saves me the room of storing a larger pancake portable compressor.


Any chance you have a wiring diagram/schematic? Love your set up and never thought about doing this with our Viair.

Cruzer 05-15-2021 11:28 AM

1 Attachment(s)
I have a book full of wiring diagrams from all my mods. :laugh:

The key is that I used a larger relay to allow the higher amperage to flow to the compressors while still retaining a smaller rocker switch. I also added aa smaller relay so that the pilot light on the mini-rocker switch would only light up when the ignition key was on. That way it wouldn't be on while parked but would be a reminder that it was still on and can be turned off once we hit the road.

MSHappyCampers 05-15-2021 11:32 AM

The 450P-RV has 100% duty cycle. The 400P-RV is 33%! The 450 is definitely the way to go!

pasdad1 05-15-2021 12:18 PM

Quote:

Originally Posted by MSHappyCampers (Post 5752297)
The 450P-RV has 100% duty cycle. The 400P-RV is 33%! The 450 is definitely the way to go!



But the other piece of the puzzle is the 400 pumps air faster! They just slow down the 450 so it generates less heat.

I bought the 400P-RV as it airs up the big 22.5 tires faster ....I only spend 5 minutes or less per tire when I need to add air a couple of times per year.

RS ODonnell 05-15-2021 01:01 PM

We've got a Smittybilt 2781. We've had to use it several times and it's always worked flawlessly.

https://www.amazon.com/Smittybilt-27.../dp/B004K25GMG

rfg9585 05-15-2021 01:06 PM

I recently got a 400rv auto based on my conversation with support. I carry it in the back of my jeep so I can also air it back up are hitting the trails. When\if you get one check the air gauge for accuracy, mind is a bit off, eg, 10 psi, so if I want to fill correctly now I know the adjustment.

rarebear.nm 05-15-2021 01:39 PM

Quote:

Originally Posted by Cruzer (Post 5752116)
It gets tough to air up steer tires to 120 PSI but I have a multiple of options. I installed the Pressure Booster as mentioned in an early post. That will allow pressures to increase up to double if needed. That lets me use my coach air to easily fill the tires with minimal time. It also gives me oil and moisture free dry air because the coach's air dryer filters the air.

For those times when I don't want to run the coach I use a Viair 450 12 volt compressor. But I mounted it in the compartment rather than go with the alligator clips. It's controlled by a solenoid coil that I control from a dash mounted illuminated mini rocker switch. There is a pressure cutout switch so I can actually leave it on for hours if need be to ensure that my air tanks stay full when using the Hadley air leveling rather than the Equalizer jacks. I can also top off the tanks prior to departing in the morning without having to run the big diesel and wake up the neighbors. This setup also saves me the room of storing a larger pancake portable compressor.

In your picture at the top right what kind of pipe is that fitting attached to?

Is that a dryer and filter mounted on the vertical support?

For our 5th wheeler I installed a CO2 system some years back and love that to inflate and run power tools. I have the output regulated to 150 PSI so I can inflate any typical tire in short time and run power tools as desired. For the MH I just use a Viair 450 compressor unit. I installed a 20 amp 12 volt power outlet on both driver and passenger sides of the coach so I can easily plug it any time needed. The CO2 system is much faster at inflating than is the Viair 450.

Cruzer 05-15-2021 01:45 PM

ARB also makes some great compressors. For any Jeep owners out there who want to air down for off-road and then air up when back on the pavement you can get some mounting kits from Innovative AT Products. I bought the ARB CKMTA-12 twin pump unit, which is a powerful unit. I mounted one underneath the passenger seat on our JLUR Wrangler and another beneath the passenger seat on our Gladiator. It's total out of the way and comes with a very well done mounting kit, wiring, etc. For fellow Jeepers this is a great way to have on-board air without taking up any room. This compressor by itself could also be used for a motorhome if you want to upgrade beyond the Viair units. I also have an ARB CKMP12 portable kit in tool box that I kept in out older JK Wrangler but no longer use, which would be another excellent choice for an RV owner.

https://innovativeatproducts.com/sho...-package-deal/

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Cruzer 05-15-2021 01:51 PM

Quote:

Originally Posted by rarebear.nm (Post 5752394)
In your picture at the top right what kind of pipe is that fitting attached to?

Is that a dryer and filter mounted on the vertical support?

For our 5th wheeler I installed a CO2 system some years back and love that to inflate and run power tools. I have the output regulated to 150 PSI so I can inflate any typical tire in short time and run power tools as desired. For the MH I just use a Viair 450 compressor unit. I installed a 20 amp 12 volt power outlet on both driver and passenger sides of the coach so I can easily plug it any time needed. The CO2 system is much faster at inflating than is the Viair 450.

The fitting on the top with the red air line is a quick-disconnect fitting (one of three in the basement) for the coach's auxiliary air connections. I removed the quick disconnect coupler and installed the tee. The Viair can backfeed the coach air tanks through this tee. That's assuming the brass petcock isn't closed, which I added in the event that there was a failure in the air hose.

The device in the middle is the SMS air transformer, aka air doubler, which boosts the output pressure from the coach's air supply and allows me to quickly fill those last few pound by boosting the output air pressure up to 150 PSI.

There is no air dryer or filter on the Viair supply of air, only with the coach's on-board air, which runs through the doubler.

Nowabeachbum 05-15-2021 02:46 PM

Quote:

Originally Posted by Cruzer (Post 5752116)
It gets tough to air up steer tires to 120 PSI but I have a multiple of options. I installed the Pressure Booster as mentioned in an early post. That will allow pressures to increase up to double if needed. That lets me use my coach air to easily fill the tires with minimal time. It also gives me oil and moisture free dry air because the coach's air dryer filters the air.



For those times when I don't want to run the coach I use a Viair 450 12 volt compressor. But I mounted it in the compartment rather than go with the alligator clips. It's controlled by a solenoid coil that I control from a dash mounted illuminated mini rocker switch. There is a pressure cutout switch so I can actually leave it on for hours if need be to ensure that my air tanks stay full when using the Hadley air leveling rather than the Equalizer jacks. I can also top off the tanks prior to departing in the morning without having to run the big diesel and wake up the neighbors. This setup also saves me the room of storing a larger pancake portable compressor.



For those that have a pre 2019 Cornerstone, you should pay attention to this mod. I was very limited in how I used my air self leveling since no Cornerstone pre 2019 has a compressor! There is a big difference between how I used air level between 2017, 18 and 2019! To me, the side benefit would be, you can air up tires. Its more important to be able to air level! Why Entegra didnt put a compressor in from the start is beyond me. JMHO but this is a great mod that makes those pre 2019 Cornerstones much better.

garysfb 05-16-2021 06:50 AM

Quote:

Originally Posted by GeezerViz (Post 5750756)
Ackkk... That is not a good idea. At least based on what I was told. I used to do that too untill I went to the Spartan Academy and both Big Mike and PJ said never, never, never, hook anything up to those posts. They are attached to your something or other main control module and if you hook up to it, you can short circuit that unit which is a multi thousand dollar repair. The newer coach's now have those posts hidden so no one will hook up to them. So I just use the chassis battery without the coach running and have been fine.

I guess sometimes we get conflicting information. I was at the class this week and, yes you better not use those posts for CHARGING your batteries; but they are perfectly fine for using with a Viair or other 12 volt tool. I asked that specific question when the presentation was given.

bevandtomH 05-16-2021 07:26 AM

I agree with Gary, safe to use the posts for the Viair per PJ.
No issues.
Anything else is a no no.

Terminex 05-20-2021 02:53 PM

+1 for the porter cable pancake.

only difference for me is the chuck. I install these on all of my inflators

Haltech chuck

lenny-shawna 05-20-2021 03:29 PM

Quote:

Originally Posted by Dr. Mike (Post 5747829)
Let me know where I can get one!

I tried mine out this weekend with the wand attachment and I let more air out than in!

While we are on the subject, I just discovered the coach air system this weekend. How do I use the system and what is the limit?

NAPA

Mle75749 05-20-2021 03:41 PM

YES....we love the VIAIR compressor
 
Quote:

Originally Posted by Bunkerhill (Post 5743975)
Does anyone carry a Viair compressor to assist in inflating steer tires to pressures higher than the coach air system can provide? If you do carry this type of compressor, do you find it adequate, rated at 150psi, to fill steer tires to about 125 psi?
Thanks

YES...we just bought one after reading about them on camping newsletter. We have had issues with tire pressure on our 40 Diesel Dutchstar and it worked GREAT. We store it under the bed. Weve had to have roadside before to air up tires so the money spent on the convenience this provides is well worth it!
We bought ours off Amazon.:dance:

Maggiedad 05-20-2021 03:42 PM

120-125 pounds in steer tires? My Michelin guide says 95 pounds at my loaded axle weight. I run 100 just to be safe. Can't imagine what the ride would be like at 125 pounds.

levans1788 05-20-2021 03:55 PM

Awesome tool. Works great. Wish Id found it sooner. Well worth the cost.

TraditionBob 05-20-2021 04:43 PM

No need to kneel
 
I also got tired of kneeling. I bought a 5' whip hose and a Jaco inflator.

https://www.amazon.com/JACO-Lightning-Tire-Chuck-F-NPT/dp/B07ZHM5W91/

The inflator does not have a valve, so you need to use it with the gauge handle. Faster and easier than using the short screw-on end.

Isy1 05-20-2021 04:44 PM

Viair compressor
 
I received this item as a gift and it works great for me. However, I wish they'd come with alternate option of using 120 volts in addition to the 12V battery source. These days trucks (bed/cab) arrive with 120v which is much easier to handle. IMO.

Mr_D 05-20-2021 04:49 PM

Quote:

Originally Posted by Maggiedad (Post 5759146)
120-125 pounds in steer tires? My Michelin guide says 95 pounds at my loaded axle weight. I run 100 just to be safe. Can't imagine what the ride would be like at 125 pounds.

Some rigs are heavier than others, some owners manuals say never to air up less than the Federal weight sticker and I have found my CC with 365/70 front tires handles better with the 125 psi.
My front axle is rated for 20,000#'s but is only loaded to 18,000. Still handles better and rides fine with the 125 psi.

PRodacy 05-20-2021 05:11 PM

Viair is OK, but I gave up on them snd got a much better one ( much faster). Its an ExtremeAire Magnum. Check them out.

krudawg 05-20-2021 05:22 PM

Quote:

Originally Posted by Bunkerhill (Post 5743975)
Does anyone carry a Viair compressor to assist in inflating steer tires to pressures higher than the coach air system can provide? If you do carry this type of compressor, do you find it adequate, rated at 150psi, to fill steer tires to about 125 psi?
Thanks

I own one designed for RV's (A longer air hose, and extended inflator). It is well designed and works great. Buy one, you will thank me later

Smick 05-20-2021 05:45 PM

Same here for trailer tires and I can use it at home for tons of air tools in my shop.

JoeCar 05-20-2021 05:50 PM

We have a Viair 88P. It goes up to 120 psi. However, it draws 20A and needs to be connected to the battery versus a cigarette lighter socket. Instead of long jumper cables, we’ve been using a cheap car battery in a Minn Koda battery box.


We just recently upgraded to a Dewalt DCC020IB 20V MAX* Corded/Cordless Air Inflator. It was $99 and uses our existing Dewalt tool batteries. It runs on three different power sources: 20V MAX* battery, 12V DC, or 110V AC. It has both a high pressure hose to inflate things like tires (160 psi maximum) and a low pressure, high volume hose to inflate things like air mattresses. The high-pressure hose has a threaded chuck. It has a place for accessories (i.e. footballs needles). You set a desired air pressure and it stops with auto-shutoff. It also has a LED light for illumination in the dark.

It is 10A, and not as fast as the Viair, but much more convenient to use.

Here's a good video on it:
https://www.youtube.com/watch?v=VtfhClSHfVI

hforward 05-20-2021 07:16 PM

Yes
 
We carry the portable for our Airsteam and TV. It works very well.

Firewrench 05-20-2021 08:16 PM

Viair
 
1 Attachment(s)
I did this for about $30. Not sure why pic is sideways. Tilt your head left.
The compressor on our Accolade has pretty good volume, and coincidentally the air governor is set a little high. Cuts out at almost 130 according to dash gauge.
There was a couple unused ports on the secondary air tank. I pulled one of the pipe plugs out and ran an air line to the adjacent compartment. I can plug my 50ft Flexilla air hose in, it will reach any tire on the coach or trailer.
I turn on the TST TPMS system before breaking camp. If a tire needs a puff I can do it while the engine is warming up. Yeah, might have to tap the brake pedal to cycle the air compressor so the compressor is airing up the tire and air tanks at the same time. I use a clip-on air chuck to make things easier.

trigud 05-20-2021 08:43 PM

we have 6gal. 175psi compressor, love it

bigchick 05-21-2021 07:08 AM

i have the viair 400rv package. it's just fine for our 5th wheel that needs 110 psi. i like that it is easy to store and doesn't take a lot of space. but i do have a couple of issues with it. the analog gauge is off by about 5 psi. it doesn't natch any of the other gauges i have. and the gun just doesn't fit in my hands and is very uncomfortable to hold while inflating the tires. i solved both issues by buying a gerch digital inflation gun that fits much easier in my hand. the digital gauge that comes with the gun matches my other pressure gauges so i am confident about using it. viair also has a digital gauge that screws into the inflation gun just like the analog one. however, they will not sell the digital gauge so you can take the analog one off and screw the digital one in. they require that you buy the entire inflation gun with digital gauge!

CP Traveler 05-21-2021 07:31 AM

I do not have a Viair compressor, however, I will be buying one shortly. Check out Techno RV for prices and support!

saks1672 05-21-2021 09:40 AM

Quote:

Originally Posted by Bunkerhill (Post 5743975)
Does anyone carry a Viair compressor to assist in inflating steer tires to pressures higher than the coach air system can provide? If you do carry this type of compressor, do you find it adequate, rated at 150psi, to fill steer tires to about 125 psi?
Thanks

I meet a guy in Indio, Ca. in 11-2005 at a RV Park who was inflating his coach tires with a powertank.com . He was a distributor for the product. I purchased a 15# Tank and all the accessories for the use of it. I had the tank filled with Nitrogen, MY choice. It was amazing. Filled coach tires from 105# to 110# in less than -1- minute. I installed it in the coach basement, with quick disconnects, and used a 50' hose to air up the coach and toad from either side of the coach. The tank of nitrogen would last 1 to 1-1/2 years between refills, costing between 12-14$ at Gas Supply businesses around the country as we were Full Timers. I paid 495$ for it, and Sold it in Spring of 2014 for 350$. I would do it again .

mahdi 05-21-2021 11:09 AM

x2 for Viair 450RV. I carry it in the basement and have needed it to air up the steer up 130 psi. Have had to change pressures when moving from warm to cold weather etc. Unite works well. I connect to towed battery with engine running.

rarebear.nm 05-21-2021 01:25 PM

When on the road I use CO2 to top off our tires at 110 psi on our 5th wheeler. At home I have a large compressor 175 psi, 80 gallons that I use to inflate tires and many other uses. It works great, fast and very quiet. I do use a Viair 750 for our MH.

LargeMarge 05-21-2021 03:19 PM

Our 1997 Ford CF8000 ExpeditionVehicle has air-brakes.

The compressor on the Cummin[G!]s 8.3 is rated at 14.2cfm.
The relief on the dryer sneezes at 130psi.

2003, during our build, I tapped a tank with a traditional air-chuck on a traditional shut-on valve.
A hose reaches four corners.

I check my tires as part on my pre-go check-list.
I remember one of them needed a boost a couple-three years ago.

In other words, not an issue.

Danorske 05-22-2021 09:40 AM

How about the rear dullys? one has a backward facing valve stem?

rarebear.nm 05-22-2021 10:10 AM

Quote:

Originally Posted by Danorske (Post 5761282)
How about the rear dullys? one has a backward facing valve stem?

I replaced all valve stems with Borg solid valve stems. All of the ends are easily accessible.

Steve 716 05-22-2021 01:21 PM

hot dog compressor
 
As I understand it and this is reinforced here, the Viair fills tires very slowly, it gets very hot, and has a short power cord. I don't like any of these features so I purchased a hot dog compressor. Since it holds air in its tank my tires fill faster and the compressor doesn't need to run except when adding air to the tank. Before purchasing I made sure I could store it easily and accessibly in one of my storage bins. I have a trash can behind it to store my air hoses (one for the compressor and the other for my coach air tank fitting, which I rarely use) and all of my extension cords.

tmelsonjr 05-31-2021 05:42 PM

viair
 
I've tried some of the other and the viair is the best because it's small and powerful

budh9534 06-26-2021 10:28 AM

Quote:

Originally Posted by JoeCar (Post 5759364)
We have a Viair 88P. It goes up to 120 psi. However, it draws 20A and needs to be connected to the battery versus a cigarette lighter socket. Instead of long jumper cables, weve been using a cheap car battery in a Minn Koda battery box.

I just ordered a Viair 88P. It comes with a 10 foot power cord (to the chassis battery) and 16 foot air hose. That should be long enough to reach the driver side rear dual tires from the chassis battery in the passenger side of the engine compartment (I hope).

It cost less than $80 and only needs to fill close to 80 psi. Im concerned something so inexpensive will consistently work properly. The small size is great but if something only slightly larger was available with a bit more oomph, Id clearly consider it. (12 volt and/or 120 volt).

Will the Viair 88P likely be able to consistently top off 80 psi tires?

Gary.Jones 06-26-2021 10:48 AM

My Viair is a different model but it is capable of pumping 10 additional pounds into a 315 Michelin that needs to go from 105 to 115 pounds for example so I would not be too worried. Most of us have found the Viair to be a dependable and reliable product.

Gary

pasdad1 06-26-2021 10:52 AM

1 Attachment(s)
Quote:

Originally Posted by budh9534 (Post 5807226)
I just ordered a Viair 88P. ..The small size is great but if something only slightly larger was available with a bit more oomph, Id clearly consider it. (12 volt and/or 120 volt).



Will the Viair 88P likely be able to consistently top off 80 psi tires?


Why dont you get the 400P at least? Much more robust and powerful ! They also have the same compressor in a package with a carrying bag, lots more hose, and several inflation accessories made for RVs

Works great to add air to my giant 315/80 R22.5 tires.

Attachment 333669

budh9534 06-26-2021 11:13 AM

Quote:

Originally Posted by pasdad1 (Post 5807259)
Why don’t you get the 400P at least? Much more robust and powerful ! They also have the same compressor in a package with a carrying bag, lots more hose, and several inflation accessories made for RV’s

Works great to add air to my giant 315/80 R22.5 tires.

Attachment 333669

Because the 400P takes up more room than a Viair 88P, costs $200 vs. $80, and I don’t need a bunch of fancy attachments when I want to simply add 5 to 10 psi to 80 psi tires?

Gary.Jones 06-26-2021 12:01 PM

Well, then you have made the decision that makes sense to you. I think some were suggesting that you may save some bucks but not end up with the same quality, but then I dont have the 88P so maybe its quality and longevity are similar to the more expensive units.

you are not going to find many owners with your unit that hang out on here.... most are dealing with much bigger tires requiring much more inflation.

Good luck

Gary

HarleySG 06-29-2021 09:53 AM

I have the Viair 450P, no issues with my 2012 Aspire Tires.

I put 90 PSI in the rears and 115 PSI in the front. Front = 295 75 R22. Also, came in handy when our toad had a blowout, and needed to put a bit more air in the Jeep Spare. My wife was so glad we had it.

Cheers!!
R

Jerlot65 06-30-2021 04:51 AM

Quote:

Originally Posted by Bunkerhill (Post 5743975)
Does anyone carry a Viair compressor to assist in inflating steer tires to pressures higher than the coach air system can provide? If you do carry this type of compressor, do you find it adequate, rated at 150psi, to fill steer tires to about 125 psi?
Thanks

I use a Dewalt 20volt Max. DDC020IB.

It has a 160psi max and also screws into tire valve. Home Depot $99

Prairie Dog 06-30-2021 08:24 PM

Quote:

Originally Posted by Jerlot65 (Post 5812248)
I use a Dewalt 20volt Max. DDC020IB.

It has a 160psi max and also screws into tire valve. Home Depot $99

I have the same and although it is handy and highly portable. It is SLOW.

Tlmr4784 07-02-2021 06:26 PM

I use 450 Rv unit.
Pricey but worth it for the reliable, dependable tool that it is.
Pump anything up with no problem.
Had issue with regid fill chuck leaking.
Service dept overnighted one to my home, no question asked.
Always have great filling equipment for rv, three vehicles, boat trailer, etc.
Very satisfied with product.

ECVB 08-02-2021 05:38 PM

After kicking around the multiple ideas the past year for a compressor for our rig. I decided to empty my wallet and go with the VIAIR 450p-RVS

Very impressed with the performance and quality of this little thing .. I aired up all 8 tires from 3 to 10 lbs in each on with no problem so well worth the $$.

I got it from Techno RV they had a 5% coupon and shipped super fast. ordered Monday and was at my door step on Wednesday

Gary.Jones 08-02-2021 05:43 PM

ECVB

You made the right decision.... often the money is just worth it for what you get..... I've bought tons of cheap junk until about midlife, I realized I just needed to spend the money to get quality.

Gary

ECVB 08-02-2021 05:50 PM

AMEN !


Quote:

Originally Posted by Gary.Jones (Post 5857874)
ECVB

You made the right decision.... often the money is just worth it for what you get..... I've bought tons of cheap junk until about midlife, I realized I just needed to spend the money to get quality.

Gary


EVsCoach 08-02-2021 07:30 PM

Quote:

Originally Posted by ECVB (Post 5857881)
AMEN !



Great choice used mine for a few years now with outstanding results.

ECVB 08-03-2021 10:28 AM

Just as an FYI... Make sure you tighten those TPMS caps back on real goodd.. in the middle of the night the alarm woke me up with low pressure alarm .lol.
Loose TPMS will let air out

monsafpant 08-09-2021 11:45 AM

66 3
Quote:

Originally Posted by ECVB (Post 5858663)
Just as an FYI... Make sure you tighten those TPMS caps back on real goodd.. in the middle of the night the alarm woke me up with low pressure alarm .lol.

Loose TPMS will let air out

Zzss.$


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