Thread Tools Search this Thread Display Modes
Old 05-29-2010, 10:52 PM   #15
Master of Universe
Gene's Avatar
2008 25' Safari FB SE
Grand Junction , Colorado
Join Date: Sep 2007
Posts: 11,403
Between the TPMS pressure reading (the lowest by about 3 lbs.) and the gauge on my compressor (the highest) and my Accugage gauge (almost as high a reading as the compressor), who knows what's right? Take an average or the lowest reading—you'll have higher pressure which is better than lower. In tire shops a lot of guys use the cheapo gauge with the stick that pops out—those never looked accurate to me—but they can stick them in their pockets like a pen.

I bought a compressor at Costco more than a year ago for about $65. Attaches to the battery and pumps quickly. Quality appears good. I don't know if they sell it anymore and the brand is a mystery one to me (partly because I forget the name).


Gene is online now   Reply With Quote
Old 05-30-2010, 09:12 AM   #16
Rivet Master
Ag&Au's Avatar
Port Orchard , Washington
Join Date: May 2009
Posts: 4,464
Images: 1
Originally Posted by JBinKC View Post
Friends: I bought the Warn SPC and it's a good compressor -- quiet, powerful and convenient. I can easily reach the trailer tires from the trailer battery, allowing me to adjust tire pressures when the tires are stone cold. The tire gauge included is not impressive and it's 5 pounds off from my Accu-Gage tire pressure gauge. So how do you get tire pressure gauges calibrated? Do serious tire dealers have accurate gauges to use as a standard? Best wishes, John

I also purchased the WARN SPC. I have not used it to inflate the trailer tires yet. I was surprised that the best price I found was the WARN website.

I had not thought of trying to use the trailer batteries.

I was going to use the truck batteries with jumper cables as an extension if necessary. (sort of Rube Goldberg). My trailer batteries are such a tight squeeze in the compartments, that I am sure I could not reach the negative post without pulling the battery out onto the door. . Since our trailers are the same model (different years), I am wondering how you handle that problem if your battery setup is the same.

I have a Accu-Gage EZ-air with a round digital gage. I also have a Brookstone guage with the same type of round digital guage. I am guessing that the Brookstone guage was made by Accu-gage because of their similar construction They both always agree within a fraction of a pound.

I also have a HawksHead TMPS, that all sensors are in agreement with the gauges within a fraction of a pound. HawksHead says they have very accurate equipment that they calibrate each sensor with.

Maybe I lucked out and coincidentally everything is wrong by the same amount.



Ag&Au is offline   Reply With Quote
Old 05-30-2010, 09:40 AM   #17
2 Rivet Member
pwhittle's Avatar
1982 31' Airstream310
Alpharetta , Georgia
Join Date: Jun 2007
Posts: 95
The Warn pump looks very similar to the previous generation of pumps that HarborFreight sold under part number 93186. It has since been superceded with a similar looking nmodel with similar specs.

The replacement has similar specs on special right now for $59.99 shipped:

12 Volt, 150 PSI High Volume Air Compressor

I found a comparison between the Warn and the original HF unit:

Superflow MV-50 vs Harbor Freight's 93186 "12V High Volume Compressor" test results -

The Viair product line is avalable from here:

HornBlasters Air Horn Products Catalog! Find The Perfect Train Air Horn For Your Car Or Truck!

If you call them you can often get a discount and free shipping on some items. I got a $199 Viair 444C shipped for $175.

I had the original HF 93186 on my motorhome as a fixed installation which lasted 3 years, but I was not treating it too well. It was tasked with keeping a 6.5 gallon tank at 120 psi. The thing that finally killed it was when I added train horns. You can see some posts in the Classic Motorhomes forum.

I would not hesitate to use one for keeping tires full. Can't beat the price of the HF unit.

1982 FFC with Motorhome Interior
pwhittle is offline   Reply With Quote
Old 07-14-2018, 01:15 PM   #18
2 Rivet Member
jsfranchek's Avatar
2016 26' Flying Cloud
Wayland , Massachusetts
Join Date: Jun 2017
Posts: 28
Images: 4
Update on portable air compressors

Does anyone have an update on recommended portable air compressors for trailer tires that will be kept at 65 psi? The last posts are in 2010 and I suspect that the technology has progressed some since then. Thanks.
jsfranchek is offline   Reply With Quote
Old 07-14-2018, 01:33 PM   #19
Rivet Master
Caffeinated's Avatar
2015 27' Flying Cloud
Portland , Oregon
Join Date: May 2015
Posts: 909
For the past three years I have used a Viair, I forget the model but it's a bit smaller than the 400 series. It works well, and if it went belly up I'd get another one.

2015 27ft FC FB
WBCCI #3960
2019 F150 ecoboost
Caffeinated is offline   Reply With Quote
Old 07-14-2018, 01:37 PM   #20
Rivet Master
Mollysdad's Avatar
2017 26' Flying Cloud
Tampa , Florida
Join Date: Feb 2017
Posts: 3,722
I sprung for the Viair package that delivers more CFM, but does not run continuously. (400P). I find I never run it 20 minutes anyway.
It's very well made, came with a screw-on trigger with a gauge, and assorted nice accessories, including two hose extensions.
I did wonder why the two hoses are different. One is Hose #1, and the other is an extension. They are not interchangeable. It's because one has the same fittings on both ends, but???
Pricey but worked like a champ. It only let me down by not being able to pop the bead on a rim. But it's designed to add air, not mount tires.
Mollysdad is offline   Reply With Quote
Old 07-14-2018, 01:44 PM   #21

2003 25' Classic
Zanadude Nebula , Milky Way
Join Date: Jun 2007
Posts: 13,811
Images: 1

We had a portable compressor long before we had an Airstream...Black & Decker AC powered.
We have a 2000i so we still use it... for the AS 🤗
But then there's always the 12v Hadley in the Burb for the Grover Toot'r. 🤪

"We are all here on earth to help others; what on earth the others are here for I don't know."
W. H. Auden

"The hardest thing about Airstreaming, clearing your head and accepting how others feel itís supposed to be done"Ö..

ROBERT CROSS is offline   Reply With Quote
Old 07-14-2018, 01:57 PM   #22
Rivet Master
ITSNO60's Avatar
Currently Looking...
Tucson , AZ
Join Date: May 2017
Posts: 876
I have the Viair 450 permanently mounted under the truck with a 2.5 gallon tank. The switch and gauge are under the dash and the air intake is inside the cab behind the back seat, the air chuck is mounted just behind the passenger running board. With this and my mini floor jack and impact I have changed a tire in about 15 min without breaking a sweat, and most of that was getting the spare cranked down.

Does everyone need this? No but I am a big truck/tool/gadget kind of guy and I love it. Viair makes quality smaller setups for those interested in tire maintenance only.
ITSNO60 is offline   Reply With Quote
Old 07-14-2018, 02:57 PM   #23
4 Rivet Member
Join Date: Aug 2002
Posts: 356
Q Industries MV50 SuperFlow Hi-Volume Air Compressor

I posted back in 2010 the above compressor ($60 at the time) and it is still going strong 9 years latter. I did have to better insulate the power wires coming out of the unit, but other than that no problem.

It's currently selling on Amazon for $74 with a 4 star review (608 reviews). I did read a few of the reviews at the top that are less favorable but mine is good....
Sav'h Steve is offline   Reply With Quote
Old 07-14-2018, 04:10 PM   #24
Dazed and Confused
Isuzusweet's Avatar

Currently Looking...
1983 31' Airstream310
Hillsburgh , Ontario
Join Date: Sep 2012
Posts: 3,539
These guys also make a very high quality piece of kit that works well in high heat areas. Austrailian made, for the Outback.

Sidekick Tony

PS I have the continuous duty twin cylinder model.

Per Mare, Per Terram and may all your campaigns be successful.

ďItís a recession when your neighbor loses his job; itís a depression when you lose your own.Ē "Harry S Truman"
Isuzusweet is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
air compressor wanderingeye Mechanics Corner - Engines, Transmission & More... 3 01-27-2006 07:47 AM
Air compressor for AS... crazylev General Repair Forum 4 05-11-2004 07:41 PM
air bag air compressor dbyar Mechanics Corner - Engines, Transmission & More... 12 05-08-2004 12:58 PM
Air compressor ALANSD Airstream Motorhome Forums 15 01-02-2004 04:18 PM
Air compressor Craig Winterizing, Storage, Carports & Covers 4 11-07-2002 08:21 AM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:10 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.