Go Back   iRV2 Forums > MOTORHOME FORUMS > Class A Motorhome Discussions
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 05-13-2012, 08:19 PM   #1
Senior Member/RVM #90
 
MSHappyCampers's Avatar


 
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 26,338
Question on airing MH tires

The 1/4" coiled air hose that I have with my MH takes FOREVER to air the tires to 100 lbs pressure, even with the coach pressure at 120 lbs. Today I bought a 3/8" hose at WalMart. Will the 50% increase in size air them up faster?
__________________

__________________
Joe & Annette

2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
MSHappyCampers is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 05-13-2012, 08:55 PM   #2
Senior Member
 
djbmsu's Avatar
 
Join Date: Nov 2011
Location: Charlotte Harbor, FL
Posts: 1,806
it will help some yes, it is the same as filling a 5 gal pail with water with a 1/2 in hose v/s a 3/4 in hose. just not much
__________________

__________________
Don and Nancy
[2014 40QBH Phaeton, 2015 Buick Enclave, 2yr old sisters Sara n Kaycee, Havanese, Two Segways
djbmsu is offline   Reply With Quote
Old 05-13-2012, 09:07 PM   #3
Dik
Junior Member
 
Join Date: May 2012
Posts: 21
Quote:
Originally Posted by MSHappyCampers View Post
The 1/4" coiled air hose that I have with my MH takes FOREVER to air the tires to 100 lbs pressure, even with the coach pressure at 120 lbs. Today I bought a 3/8" hose at WalMart. Will the 50% increase in size air them up faster?
I don't believe volume will help with pressure. Try tapping into the air tank itself, this will give you the true pressure in your tank as it reads on gauge. Good luck...Dik
__________________
Dik is offline   Reply With Quote
Old 05-13-2012, 09:13 PM   #4
Senior Member
 
Coma's Avatar
 
Monaco Owners Club
Join Date: Nov 2010
Location: The Emerald Coast
Posts: 1,757
Get one of these.
__________________
Jim and Jennie, Cats=Bittles and Potter, 2000 Dynasty 350 ISC
2013 Silverado 4x4 Towed with R1200GS in bed.
PROV23:4 Do not wear yourself out to get rich; have the wisdom to show restraint.
Coma is offline   Reply With Quote
Old 05-13-2012, 09:28 PM   #5
Senior Member
 
336muffin's Avatar
 
Join Date: Apr 2011
Posts: 2,569
I buy a quality commercial double footed air chuck. I disassemble it and tap the two pieces that you put over the valve stem and tap it out with a fine thread tap creating internal threads that will "clip on" to the external threads on the valve stem. Thus holding itself on the valve stem. Being a old owner operator and checking 18 tires at a time weekly this is a time saver. Sometimes you can find one of these made commercial but the last time I tried the guy behind the counter said they were not available because of liability. I let a low tire air up while I'm checking the others with a gauge.
__________________
American Tradition 42R-Cadillac SRX Blue Ox Koni 5050XL MCD Scangauge D Samsung rf197
Fulltime since 2012
336muffin is offline   Reply With Quote
Old 05-13-2012, 09:37 PM   #6
Moderator Emeritus
 
RickO's Avatar


 
Join Date: Jan 2007
Location: Litchfield Park, Arizona
Posts: 10,530
I'm not sure how the math works but I would sure think increasing your hose size by 50% would significantly reduce the time it takes to now air up. I believe the hose I carry is a 50' x 1/2". It takes no more than 5 to 10 seconds per pound to air up to the 95# I use.

Rick
__________________
Rick, Nancy, Peanut & Lola our Westie Dogs & Bailey the Sheltie.

2007 Itasca Ellipse 40FD
RickO is offline   Reply With Quote
Old 05-13-2012, 09:57 PM   #7
Senior Member
 
W4MBG's Avatar
 
Winnebago Owners Club
Ford Super Duty Owner
Join Date: Nov 2010
Location: Williamsburg, VA
Posts: 650
20 pounds of differential aint much. 150 psi and a bigger hose will help a lot.
__________________
1999 Winnebago Minnie 29', Ford V10, Close to stock.
W4MBG is offline   Reply With Quote
Old 05-14-2012, 12:07 AM   #8
Senior Member
 
sc3283's Avatar
 
Join Date: Aug 2011
Posts: 1,126
the larger ID hose will help somewhat. The valve stem is the major restriction, length of air hose is another drawback(longer=more psi drop)...when having PSI near what PSI your trying to obtain in the tire compounds the situation
__________________
96 Dynasty 36' that does NOT wander, thanks to RuppParts.com and their superior "poly" suspension bushings
sc3283 is offline   Reply With Quote
Old 05-14-2012, 05:30 PM   #9
Moderator Emeritus
 
Gary RVRoamer's Avatar


 
Join Date: Jan 2000
Location: Silver Springs, FL. USA
Posts: 18,085
How often do you add much air? Typically you would only be adding a few lbs to replace air loss, so the difference between a 1/4" or 3/8" hose would be negligible.

A larger hose helps only if the air source can deliver more volume. I gather you are using the coach's onboard air system, so what is the size of the hose that delivers air to the connector? Maybe 1/4"???? Most of the hoses in my coach are 1/4.
__________________
Gary Brinck
Former owner of 2004 American Tradition
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
Gary RVRoamer is offline   Reply With Quote
Old 05-14-2012, 06:08 PM   #10
Senior Member
 
Join Date: May 2010
Posts: 789
Quote:
Originally Posted by Coma View Post
Get one of these.
X2-quick, easy, light and easy to store.

Dave
1998 American Eagle 40EVS
__________________
FormerBoater is offline   Reply With Quote
Old 05-14-2012, 10:41 PM   #11
Senior Member
 
distaff's Avatar
 
Join Date: Dec 2009
Posts: 1,191
Larger hose really won't matter. The size of the valve stem is much smaller than the hose, and frankly, you can push a lot of air through a small restriction - a tiny hole in your tire will empty it plenty fast.

Your issue is the differential in pressure, the pressure at your outlet from the coach is probably barely 110 psi - too close to the pressure in your tire. You need a high pressure pump. I carry a 150 psi Cable and Porter doughnut, some others have different solutions, but you need at least 20 psi difference, preferably more.
__________________
Paul
2006 Patriot Thunder C13 Allison 4000
2010 Ford Flex Ecoboost AWD
distaff is offline   Reply With Quote
Old 05-14-2012, 11:50 PM   #12
Senior Member
 
Arch Hoagland's Avatar
 
Monaco Owners Club
Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 5,908
I'm curious how often you have to add air and how much.

It's extremely rare, maybe once a year, that I have to add a pound or two to a couple tires.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Arch Hoagland is online now   Reply With Quote
Old 05-14-2012, 11:56 PM   #13
Senior Member
 
Mr_D's Avatar
 
Solo Rvers Club
iRV2 No Limits Club
Join Date: May 2011
Location: Vancouver, WA
Posts: 28,508
Quote:
Originally Posted by distaff View Post
Larger hose really won't matter. The size of the valve stem is much smaller than the hose, and frankly, you can push a lot of air through a small restriction - a tiny hole in your tire will empty it plenty fast.
Yep, I was amazed at how small and restricted my intake (after turbo) was on our ISC and yet it's plenty for the 35 psi output of the turbo.
__________________
2009 45' Magna 630 w/Cummins ISX 650 HP/1950 Lbs Ft
Charter Good Sam Lifetime Member, FMCA, SKP
RV'ing since 1957, NRA Benefactor Life, towing '14 CR-V
Mr_D is offline   Reply With Quote
Old 05-15-2012, 01:33 AM   #14
"Formerly Diplomat Don"
 
Dutch Star Don's Avatar
 
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 9,299
I have the same Sears pump as "Coma" and "Former Boater" and it works great. It's a 120volt unit and can be used at your campsite without having to air up the coach or leave it running. You can also use it on the road by running you generator. Between the built-in air hose and power cord, I can reach all four corners of my coach when plugged into the power in my storage bay.

This little compressor adds about 1 pound of air every 13-15 seconds and will easily go to 115 pounds. The chuck locks onto the tire so you don't have to hold onto it. The built-in gauge bounces around when the compressor is running, but it you can get pretty close with it. Once you turn it off, it's pretty accurate.

I use an old pillow case as a cover and then store it in my bay. Great compressor!
__________________

__________________
Don & Mary
2014 Newmar Dutch Star - All Electric - 450 ISL
2016 GMC Canyon 4WD Crew Cab
Dutch Star Don is online now   Reply With Quote
Reply

Tags
tires



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


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 01:18 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.