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 02-26-2013, 06:35 PM   #1
Senior Member
 
Country Coach Owners Club
Join Date: Feb 2012
Location: Phoenix AZ
Posts: 240
Tag axle wheel(s)

Some tag axle coaches have the wheel set inboard to match the live axle and some use a reverse wheel mount. Why is this? The tag axle wheel that is installed to look like the live one looks better in my opinion. Most MCI busses have the tag axle wheel reversed so I suspect there must be a pretty good reason like less tire scuffing when turning or?

Just one of those things that I see on the road and have to ask why.
__________________

__________________
chuydog 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 02-26-2013, 06:39 PM   #2
Senior Member
 
FlyingDiver's Avatar
 
Newmar Owners Club
Join Date: May 2007
Location: Somewhere....
Posts: 3,820
The outside mount is for looks, to match the mains. I think the inside mount moves the contact point inward and makes the suspension a little stronger.
__________________

__________________
2008 King Aire 4562, Spartan K3(GT) w/ Cummins ISX 600
2014 Jeep Grand Cherokee Overland 5.7L V8 Hemi w/ Blue Ox Aventa LX Tow Bar and baseplate, SMI Air Force One brake
FlyingDiver is offline   Reply With Quote
Old 02-26-2013, 06:56 PM   #3
Senior Member
 
Coaster1's Avatar
 
Join Date: Jan 2013
Posts: 371
Looks for the reversed and maintenance on the straight. Fleets can use the steer axle tires on the tag without dismounting. Federal regs mandate that 4/32s remaning tread is the minimum for steer and 2/32s on drives. Also depends if the tag steers.
__________________
'92 Gulf Stream Sun Voyager. Tweaked 5.9 Cummins, complete interior makeover (previous owner).
Coaster1 is offline   Reply With Quote
Old 02-26-2013, 07:05 PM   #4
Senior Member
 
Walter5555's Avatar
 
National RV Owners Club
Join Date: Oct 2012
Location: Union City, Ca.
Posts: 522
What is more inportion.

I have a tag axle on my M.H. and I would be more concerned with the breaks on it then how the wheels looked.
The tag axle on my M.H. has a master cylinder all by it self and you should make sure that when you have some one check your break fluid ask them if they had check the reservoir for the tag axle.(not all repair people are aware of another reservoir.)
It's located in back of the dulls wheels up under neath the back of the motor home on a Chevy 36' 1997 Dolphin M.H. it cost me $2,500.00 to repair mine.
Just a thought.
__________________
Walter5555 is offline   Reply With Quote
Old 02-28-2013, 07:54 AM   #5
Senior Member
 
National RV Owners Club
Spartan Chassis
Join Date: Mar 2011
Posts: 616
Quote:
Originally Posted by Terry Walter View Post
I have a tag axle on my M.H. and I would be more concerned with the breaks on it then how the wheels looked.
The tag axle on my M.H. has a master cylinder all by it self and you should make sure that when you have some one check your break fluid ask them if they had check the reservoir for the tag axle.(not all repair people are aware of another reservoir.)
It's located in back of the dulls wheels up under neath the back of the motor home on a Chevy 36' 1997 Dolphin M.H. it cost me $2,500.00 to repair mine.
Just a thought.
I just had my tag brakes checked and fluid was empty. They filled it up and is working. What did they do that cost $2500?

John
__________________
John & Deanie, Corky and Benji (best buddies)
2001 National Marlin 390 DP
"Try to live up to your dog's opinion of you."
zzjea is offline   Reply With Quote
Old 03-01-2013, 11:57 AM   #6
Senior Member
 
zmotorsports's Avatar
 
Monaco Owners Club
Join Date: Feb 2009
Location: Utah
Posts: 1,623
Weight capacity is the main issue with cost to swap steer with tag being a secondary factor.

With the wheel mounted facing outward (like a steer) the wheel bearings are more in the center of the tire which allow a slight increase in capacity. Also the tag axle width will be a little wider. With the tag axle wheel mounted like the drive axle (dish facing outward), the bearings are inboard of the center line of the tire/wheel which will put a little more leverage on the mounting point.

These are not huge but there is a difference in weight capacity. Companies like Prevost and MCI just for example must use this style due to the many of them weighing in well over 50k pounds, so every little bit helps. With some coach manufacturers using various chassis, it ends up being personal preference as although they are heavy, the mounting is not necessary for having every last pound of weight capacity.

Take Tiffin for example, they can be manufactured using either the Freightliner chassis which uses the tag mounted like the steer or the Spartan which uses the tag mounted like the drive axle configuration.

Also, MCI and Prevost use a steering tag axle design whereas companies like Roadmaster use a lifting tag design. Again, it comes down to personal preference if you don't have to have the extra weight carrying capacity.

Mike.
__________________
Mike & Chrystal/ 2011 Jeep JKUR
Link to our 2003 Monaco Baroness Projects/Mods thread here:
http://www.irv2.com/forums/f115/mods-upgrades-to-our-2003-dynasty-237276.html
zmotorsports is online now   Reply With Quote
Old 03-02-2013, 08:05 PM   #7
Senior Member
 
Country Coach Owners Club
Join Date: Feb 2012
Location: Phoenix AZ
Posts: 240
Thanks Mike, your explanation is exactly what I wanted and I guess that is why Greyhound and many touring busses have the tag axle wheel reversed.

Tom
__________________

__________________
chuydog 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


» Virginia Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 12:52 PM.


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