Reply
 
Thread Tools Search this Thread Display Modes
 
Old 10-30-2007, 04:23 PM   #1
Moderator
 
jcanavera's Avatar

 
2004 30' Classic Slideout
Fenton , Missouri
Join Date: Mar 2002
Posts: 9,002
Images: 143
Send a message via AIM to jcanavera Send a message via Skype™ to jcanavera
Metal valve stems

Well tomorrow is the day I'm going to change out the Marathons and get my Maxxis tires put on. I'm taking the tires and wheels to a local auto repair shop that was recommend to me (since they can handle the aluminum wheels with care).

The question just hit me, should I have them replace the metal stems on the wheels (2003 installed), or should I leave well enough alone? The Maxxis tires I'm using are E rated ST tires. I'm planning to run them at 70-75 psi. so metal stems are in order. I'm used to replacing rubber stems on my auto tires but in most cases the tires I'm replacing are older than 4 years. Heck my E rated van tires are over 4 years old and will probably be there another 4. I don't think those valves are unreliable yet.

Any thoughts?

Jack
__________________

__________________
Jack Canavera
STL Mo.
AIR #56
'04 Classic 30' S.O.,'03 GMC Savana 2500,'14 Honda CTX 700
jcanavera is offline   Reply With Quote
Old 10-30-2007, 04:45 PM   #2
_
 
. , .
Join Date: Dec 2004
Posts: 8,812
i would (and did) continue using the oem a/s metal stems...

a quick note to tech support should confirm IF they are rated for up to 80 psi to match the maxxis...

the alcoa rims are rated to 95 psi...

not ALL metal stems are high pressure rated.

not ALL rubber or rubber/metal stems are low pressure rated.

i've got metal stems that are still functional at 18 years...

and some rubber/metal stems that are rated to 90 psi...

putting on new metal stems DOES increase the chance of a new slow leak....

i dealt with 2 for several weeks recently when i "upgraded" the truck stems to metal...

it was a pia, but now after 2 months is resolved, i hope.

cheers
2air'

lastly it is possible new CORES ONLY can be used with a higher rating and this will avoid the issue of getting new stems air tight...
__________________

__________________
all of the true things that i am about to tell you are shameless lies. l.b.j.

we are here on earth to fart around. don't let anybody tell you any different. k.v.
2airishuman is offline   Reply With Quote
Old 10-30-2007, 04:49 PM   #3
Rivet Master
 
vswingfield's Avatar
 
1983 34' Excella
1967 24' Tradewind
Little Rock , Arkansas
Join Date: Nov 2006
Posts: 3,772
Images: 32
Rivet Valve Stems

Hi Jack,

I would continue to use the metal stems. However, I would replace the cores. You should be able to purchase the screw in core and a tool at any auto parts store.
__________________
Vaughan
vswingfield is offline   Reply With Quote
Old 10-30-2007, 05:10 PM   #4
Rivet Master
Commercial Member
 
lewster's Avatar
 
Vintage Kin Owner
Naples, FL , Hood River, OR
Join Date: Dec 2005
Posts: 7,279
Jack,

I think that metal stems should be mandatory on any tire capable of being inflated over 65psi. That said, I don't use rubber (regardless of the rating) on anything over a passenger car tire or 35 psi. I even use metal on my motorcycle! My bicycles even use metal stems!!!!!!

I have heard several tales about the tire blowing due to the valve stem (rubber of course). Go metal and sleep well at night!
__________________
Lew Farber...ABYC Certified Master Marine Electrician...RVIA Certified Master Tech ...AM Solar Authorized Installation Center...AIRSTREAM Solar & Electrical Specialist...Micro Air 'Easy Start' Sales and Installations
lewster is offline   Reply With Quote
Old 10-31-2007, 10:10 AM   #5
Moderator
 
jcanavera's Avatar

 
2004 30' Classic Slideout
Fenton , Missouri
Join Date: Mar 2002
Posts: 9,002
Images: 143
Send a message via AIM to jcanavera Send a message via Skype™ to jcanavera
Well I pulled two of the wheels off and pulled out one valve core and it was brass. I had bought some replacements which were nickel plated but the brass one's looked good enough so I left them in. At this point I have three wheels down at the local auto repair (the bad tire and the rear axle wheels) getting changed over from the Marathons to the Maxxis tires I just bought. Once I get those 3 back I'll pull the last wheel and get that tire changed out.

I bit the bullet and after seeing 2air's pictures from Jackson Center, I used my neighbors floor jack on the jack plates to lift the trailer. I used a wood block between the jack and the plate. All is well and up went the trailer with no problems.

Thanks 2air for those pictures. You certainly can lift on those plates with damaging the trailer.

Jack
__________________
Jack Canavera
STL Mo.
AIR #56
'04 Classic 30' S.O.,'03 GMC Savana 2500,'14 Honda CTX 700
jcanavera is offline   Reply With Quote
Old 10-31-2007, 10:20 AM   #6
Moderator
 
moosetags's Avatar

 
2015 25' FB Flying Cloud
2012 23' FB Flying Cloud
2005 25' Safari
Santa Rosa Beach , Florida
Join Date: Jul 2006
Posts: 10,762
Images: 5
Good luck with the Maxxis. We put 4 Maxxis E's on Lucy after the three Marathon blowouts on our Western trip in June. I've got about 8,000 miles on the Maxxis, and so far, so good. I've been running the Maxxis at 70psi for an 7,500# Safari 25 FB. I changed the valve stems when I put the Maxxis on.
__________________
SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
2015 FC 25' FB (Lucy) with HAHA
2005 Suburban 2500 Quadrasteer (Olivia) & 2018 Silverado 2500 (Lillian)
moosetags is offline   Reply With Quote
Old 10-31-2007, 11:58 AM   #7
_
 
. , .
Join Date: Dec 2004
Posts: 8,812
Quote:
Originally Posted by jcanavera
...You certainly can lift on those plates with damaging the trailer....Jack
hey ur welcome jack. i'm a believer now too.

i think this should read 'withOUT damaging the trailer?

quick story on valve stems....

i use a digital pressure gauge, and after my last tire service all pressures were exactly 64.5 psi...

every time i checked them, 64.5 psi. it was un canny.

so i checked them once while on the road (should have been a bit higher) still 64.5 psi.

turns out 5/6 valve stems had been screwed in TOO FAR and the gauge wasn't really reading pressures, except for the first tire.

so it was displaying that data for all 6.

after backing out the valve cores 1/2 to 3/4 turn the gauge was reading again and the pressures ranged from 58 to 67 for the other 5 tires.

i now carry 6 replacement valve cores and ONE extra complete valve stem, along with the little core tool....

the devil is in the details folks....

2air'
__________________
all of the true things that i am about to tell you are shameless lies. l.b.j.

we are here on earth to fart around. don't let anybody tell you any different. k.v.
2airishuman is offline   Reply With Quote
Old 10-31-2007, 12:12 PM   #8
Moderator
 
HiHoAgRV's Avatar

 
1991 34' Excella
1963 26' Overlander
1961 26' Overlander
Central , Mississippi
Join Date: Nov 2006
Posts: 5,326
Images: 29
Blog Entries: 49
Quote:
Originally Posted by lewster
I have heard several tales about the tire blowing due to the valve stem (rubber of course). Go metal and sleep well at night!
My neighbors 5th wheel blew the rubber stem right out of the rim, luckly he was turning into our neighborhood at the time.

Years ago when I raced Karts I had an episode where one tire would go flat on every first fast lap. Back in the pits it wouldn't leak one bit. The spring on the valve stem was so weak the rotational forces would press the stem inward and allow the tire to deflate. Of course these were 6" rims doing 2,000 rpm
__________________

__________________
Hi Ho Silver RV! Vernon, Sarah, Mac the Border Collie -
A honkin' long 34' named AlumaTherapy http://www.airforums.com/forums/f205...num-54749.html
and a 26' '63 Overlander, Dolly http://www.airforums.com/forums/f109...ome-71609.html
HiHoAgRV is offline   Reply With Quote
Reply


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
Tire Valve Stems Airperson Tires 11 04-30-2011 06:22 AM
Balancing and Stems Ganglin Wheels, Hubs & Bearings 3 03-31-2007 06:11 PM
Today gate valve, later check valve. GlenCoombe Classic Motorhomes 1 09-20-2005 12:02 PM
Metal Petcock Valve Replacement, Help! HowardD Fresh Water Systems 3 06-10-2005 10:41 PM
Valve Stems LKappenman Wheels, Hubs & Bearings 5 08-08-2002 09:34 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 08:31 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.