Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-30-2013, 08:37 AM   #1
4 Rivet Member
 
silver 67's Avatar
 
1967 30' Sovereign
Leavenworth , Kansas
Join Date: Jul 2004
Posts: 382
Images: 3
Lost two wheels: why?

In the last month I have had two alum wheels come off. At first I tighten the lug nuts to 95 lbs no problem after many miles. Later tighten to 110 then had two wheels come off. Question is, did the studs fail or did the lug nuts come loose for some reason. All studs were broken off both times.

Thanks,

Silver 67
__________________

__________________
Beth and/or David

67 Sovereign, double bed, rear bath-"Moby"
2005 Dodge Ram 2500 Hemi, Quad Cab-"Ahab"
"Vintage trailer, vintage owners"
silver 67 is offline   Reply With Quote
Old 06-30-2013, 08:53 AM   #2
Figment of My Imagination
 
Protagonist's Avatar
 
2012 Interstate Coach
From All Over , More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,299
Quote:
Originally Posted by silver 67 View Post
In the last month I have had two alum wheels come off. At first I tighten the lug nuts to 95 lbs no problem after many miles. Later tighten to 110 then had two wheels come off. Question is, did the studs fail or did the lug nuts come loose for some reason. All studs were broken off both times.

Thanks,

Silver 67
If the studs were broken both times, then the most likely culprit was over-tightening, which puts too much strain on the studs. If I saw the broken ends of the studs I'd be able to tell better; different failure modes cause differently-shaped breaks.

For example… If you still have the broken studs, look at the ends. Do you see two different colors of metal at the break? If so, that indicates that the stud was already cracked before it broke; the old crack will be darker in color than the new break. If it's all the same color, that means the whole thing broke at once. But that's only an example, and not necessarily an explanation of what happened in your case.
__________________

__________________
WBCCI #1105
TAC LA-4

My Google-Fu is strong today.
Protagonist is offline   Reply With Quote
Old 06-30-2013, 09:31 AM   #3
retired USA/USAF

 
2001 30' Excella
Somerset , New Jersey
Join Date: Jan 2009
Posts: 2,156
Also check the cone end of the stud to make sure it is the proper shape for the wheels. Sometimes it does matter. Wheel lugs are not lubricated. Someone might have thought they were doing you a favor but Nooooooo. If you're not sure a good tire shop should be able to advise you. I visit Leavenworth frequently and they MUST have a reputable tire repair shop there.
__________________
Roger in NJ

" Democracy is the worst form of government. Except for all the rest"
Winston Churchill 1948

TAC - NJ 18

polarlyse is offline   Reply With Quote
Old 06-30-2013, 10:01 AM   #4
Rivet Master
Airstream Dealer
 
Inland RV Center, In's Avatar
 
Corona , California
Join Date: Feb 2002
Posts: 16,499
Images: 1
Quote:
Originally Posted by silver 67 View Post
In the last month I have had two alum wheels come off. At first I tighten the lug nuts to 95 lbs no problem after many miles. Later tighten to 110 then had two wheels come off. Question is, did the studs fail or did the lug nuts come loose for some reason. All studs were broken off both times.

Thanks,

Silver 67
The 2 "top" reasons for those failures are (1) bad rubber rods in the axles, and (2) lack of proper running gear balance, or both.

If the axles are originals, there is your answer as the rubber rods are good for about 25 years of normal use. Yours are 46 years old, if original.

Parking a trailer for an extended period of time, that uses torsion axles, plays havoc with those rubber rods.

Rubber "must" be exercised to stay alive. If not, then those rods can solidify, causing considerable shock to the trailer and especially the wheels.

Hence, your answer.

Andy
__________________
Inland RV Center, In is offline   Reply With Quote
Old 06-30-2013, 01:36 PM   #5
Rivet Master
 
1988 32' Excella
Robbinsville , New Jersey
Join Date: May 2012
Posts: 1,008
Did you replace your axles/how old are they?
How long have you had this trailer?
This goes with the possibility of part of the break being older and part new.

Might be a good idea to replace the rest of the studs on your trailer.

As polarlyse said lug nut angle can cause problems if not correct, may be wrong if you switched from steel to aluminum rims and used the same lug nuts.
__________________
Wazbro is offline   Reply With Quote
Old 06-30-2013, 10:03 PM   #6
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
Also be sure to tighten in the proper sequence otherwise some will be overstressed.
__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark is offline   Reply With Quote
Old 06-30-2013, 10:37 PM   #7
cwf
Rivet Master
 
cwf's Avatar
 
1999 34' Excella
Currently Looking...
Hillsboro , Texas
Join Date: Feb 2013
Posts: 5,928
Images: 2
Make sure you are not bottoming out the stud inside lugs.

I think we need more info...
__________________
Peace and Blessings..
Channing
WBCCI# 30676
cwf is offline   Reply With Quote
Old 06-30-2013, 11:39 PM   #8
Rivet Master
 
1977 31' Sovereign
1963 26' Overlander
1989 34' Excella
Johnsburg , Illinois
Join Date: Jul 2005
Posts: 2,941
A detail failure analysis under a microscope of the broken studs by a qualified metallurgist will tell you why the studs failed. The studs that Airstream uses are quite hard but over tightening them can weaken them and lead to fatigue failures. I suspect that is what happened to you. I looked at a lot of them when I was the materials engineer for Outboard Marine Corporation.
__________________
dwightdi is offline   Reply With Quote
Old 07-02-2013, 06:05 PM   #9
4 Rivet Member
 
silver 67's Avatar
 
1967 30' Sovereign
Leavenworth , Kansas
Join Date: Jul 2004
Posts: 382
Images: 3
Wheels coming off

I brought the axles about 5 years ago from Inland RV and I block the trailer up during the winter. The Alum. wheels are about 5 years old and the studs came with the wheels. At first I torked the wheels at 95 and had no problems than a guy who works on RV's said that I should tork them at 110 which I did. Then the wheels started coming off. On websites most of them say tork 1/2 studs from 95 to 120lbs so I am mystified on what the heck is going wrong. I have replace the studs and will go back to 95 lbs. and I guess hope the wheels stay on.

We are at the International Rally in Huron South Dakota right now and are to lead a caravan into Minn. on the 5th of July and hope the darn wheels stay on. Please advise.

Silver 67

silver
__________________
Beth and/or David

67 Sovereign, double bed, rear bath-"Moby"
2005 Dodge Ram 2500 Hemi, Quad Cab-"Ahab"
"Vintage trailer, vintage owners"
silver 67 is offline   Reply With Quote
Old 07-02-2013, 07:10 PM   #10
3 Rivet Member
 
pgr32e's Avatar
 
1974 27' Overlander
Sault ste Marie , Ontario
Join Date: Jun 2004
Posts: 165
Images: 6
When was the last time you had your torque wrench calibrated. The last one I bought was 20- 30Lbs. high brand new.....Phil.
__________________
pgr32e is offline   Reply With Quote
Old 07-02-2013, 08:18 PM   #11
Moderator
 
HiHoAgRV's Avatar

 
1991 34' Excella
1963 26' Overlander
1961 26' Overlander
Central , Mississippi
Join Date: Nov 2006
Posts: 5,325
Images: 29
Blog Entries: 49
Was it the two left side wheels? Remember in the late '60's when Chrysler used left handed lug nuts on the left side?....

Make sure nobody has greased the studs and nuts, pull them off one at a time, spray with brake cleaner...retorque

Also, if they are shouldered nuts, I had a problem that the shoulder was too long and the nut shoulder never touched the wheel, it bottomed the shoulder on the hub...tire and rim would launch off in under 5 miles
__________________
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
Old 07-03-2013, 08:09 AM   #12
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , WNY
Join Date: Jun 2007
Posts: 11,153
Images: 1
Thumbs up

Quote:
Originally Posted by silver 67 View Post
I brought the axles about 5 years ago from Inland RV and I block the trailer up during the winter. The Alum. wheels are about 5 years old and the studs came with the wheels. At first I torked the wheels at 95 and had no problems than a guy who works on RV's said that I should tork them at 110 which I did. Then the wheels started coming off. On websites most of them say tork 1/2 studs from 95 to 120lbs so I am mystified on what the heck is going wrong. I have replace the studs and will go back to 95 lbs. and I guess hope the wheels stay on.

We are at the International Rally in Huron South Dakota right now and are to lead a caravan into Minn. on the 5th of July and hope the darn wheels stay on. Please advise.

Silver 67

silver
Silver 67,

If you are replacing all the studs I would replace the nuts as soon as possible.

These Mcgard's have worked well with our Alcoa #157111 Alum wheels.

Clean dry threads are very important for proper torque.

Good Luck

Bob
__________________
PFC.....

“After all these years the reason I continue to love Thanksgiving.....I still sit at the kids table.”
RLC

Sandra wanted to go to Cleveland on vacation,
but I’m the Husband, so we went to Cleveland.
RLC
ROBERT CROSS is offline   Reply With Quote
Old 07-03-2013, 05:23 PM   #13
Rivet Master
 
73shark's Avatar
 
2011 Interstate Coach
Overland Park , Kansas
Join Date: Aug 2011
Posts: 2,748
If they are lug-centric wheels, you should tighten them evenly to prevent side loading the studs.
__________________

__________________
Glass half full or half empty to an engineer is the glass is twice as big as it needs to be.

PM me for sale info on my 2011. SOLD!
Upfitted Transit 350 sitting in driveway.
73shark 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
'73 31' IS OE steel wheels Jim & Mitzi Wheels, Hubs & Bearings 2 02-27-2012 10:57 PM
Lug nut torque for aluminum wheels? blickcd Wheels, Hubs & Bearings 5 05-01-2011 09:08 PM
Looking for two newer 15" aluminum wheels Tallytown Wheels, Hubs & Bearings 0 04-29-2011 01:21 PM
Putting modern wheels on a '79 blickcd Wheels, Hubs & Bearings 1 01-21-2011 11:16 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:00 AM.


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.