Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-08-2012, 04:57 AM   #43
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

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

Red,

....I had a notion you would answer. Guess nobody else feels it's that important.

Bob
Attached Thumbnails
Click image for larger version

Name:	DSC08253.jpg
Views:	52
Size:	463.1 KB
ID:	172298  
__________________

__________________
ROBERT CROSS is offline   Reply With Quote
Old 11-08-2012, 06:18 AM   #44
Rivet Master

 
Southwestern , Ohio
Join Date: Nov 2006
Posts: 1,669
Quote:
Originally Posted by REDNAX View Post
All but 100lbs returned to the steering axle, tv & trl LEVEL.

Can anyone determine the ACTUAL tongue weight?


Analyzing the Rob't Cross Lash Up

TW of 13.6% at 1,160-lbs

So, since this rides on the definition of "actual", how was that determined? Best out of three via bathroom scale, SHERLINE scale or drops to the certified scale pad and calculating distance from jack to coupler center, etc?

.
I think "actual tongue weight" must be like used car dealers' "actual miles". Somewhere I heard that


1 actual mile = 1.78 statute miles


.
__________________

__________________
Nuvite-F is offline   Reply With Quote
Old 11-08-2012, 07:59 AM   #45
Rivet Master
 
1988 25' Excella
1987 32' Excella
Knoxville , Tennessee
Join Date: Oct 2010
Posts: 2,164
Blog Entries: 1
The way I would define tongue weight is the weight on the jack when the trailer is unhooked from the tow. I am not sure how to figure or measure the force on the ball when hitched with a wd hitch. Seems to me you would need a load cell between the ball and the receiver. I hope the force there just becomes irrevalent and use the axle loadings instead.
__________________
Bill M. is offline   Reply With Quote
Old 11-08-2012, 08:01 AM   #46
Vintage Kin
 
slowmover's Avatar
 
Fort Worth , Texas
Join Date: Nov 2006
Posts: 7,598
Images: 1
Quote:
Originally Posted by ROBERT CROSS View Post
Red,

....I had a notion you would answer. Guess nobody else feels it's that important.

Bob
A SHERLINE will be on my Xmas list this year.

Ron Gratz's chart is an easy fill-in-the-blanks-and-do-some-addition way of "seeing" a tow combination with a few passes across a certified scale.

And it's not the end (getting the "formula" correct), but a beginning for any small tweaks (as with your rig) where an experienced owner (could be any of us) dials in the last bits to his satisfaction.

I suppose the latest question is, what is the load per trailer wheel position with WDH applied?

.
__________________
1990 35' Silver Streak Sterling; 9k GVWR.
2004 DODGE Cummins 305/555; 6-manual; 9k GVWR.
Hensley Arrow. 9-cpm solo, 15-cpm towing
Sold: Silver Streak Model 3411
slowmover is offline   Reply With Quote
Old 11-08-2012, 09:52 AM   #47
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
You don't need to know what the weight on the ball is once you have the bars tensioned. The tounge weight is defined relative to the trailer only and it is to make it more stable. Measure the tounge weight and use the appropriate size bars for that weight.

Perry

Quote:
Originally Posted by Bill M. View Post
The way I would define tongue weight is the weight on the jack when the trailer is unhooked from the tow. I am not sure how to figure or measure the force on the ball when hitched with a wd hitch. Seems to me you would need a load cell between the ball and the receiver. I hope the force there just becomes irrevalent and use the axle loadings instead.
__________________
perryg114 is offline   Reply With Quote
Old 11-09-2012, 10:44 AM   #48
ProPride, Inc.
Commercial Member
 
Sean Woodruff's Avatar
 
Grand Blanc , Michigan
Join Date: Nov 2007
Posts: 618
Send a message via Skype™ to Sean Woodruff
How about agreement on the weight on the tongue is always there... the points supporting that weight are changed through weight distribution.

If that were not the case, hitch receivers would not have different ratings for dead tongue weight and weight distributed tongue weight.


-
__________________
ProPride Hitch
"The Next Generation in Trailer Sway Elimination"
Grand Blanc, MI
Tu ne cede malis
Sean Woodruff is offline   Reply With Quote
Old 11-09-2012, 12:25 PM   #49
Rivet Master
 
TG Twinkie's Avatar
 
1974 Argosy 26
Morrill , Nebraska
Join Date: Nov 2009
Posts: 5,140
Images: 2
Blog Entries: 5
While the weight on all axles is changed by the WD hitch. The force on the ball and the coupler increases due to the loaded spring bars.
With WD I believe the side wall stress on all tires is increased significantly when turning, especially with the inclusion of anti sway.
It would be interesting to find tire failure data comparing trailers with and without WD and/or Anti Sway hitches.
I use neither on the 26' Argosy running 55# of Air in Tow Master tires. 18K miles with no tire or handling problems.
__________________
Knowledge: "A gift to be shared. A treasure to receive."
TG Twinkie is offline   Reply With Quote
Old 11-09-2012, 05:33 PM   #50
Rivet Master
 
1988 32' Excella
Robbinsville , New Jersey
Join Date: May 2012
Posts: 1,010
Quote:
Originally Posted by TG Twinkie View Post
While the weight on all axles is changed by the WD hitch. The force on the ball and the coupler increases due to the loaded spring bars.
With WD I believe the side wall stress on all tires is increased significantly when turning, especially with the inclusion of anti sway.
It would be interesting to find tire failure data comparing trailers with and without WD and/or Anti Sway hitches.
I use neither on the 26' Argosy running 55# of Air in Tow Master tires. 18K miles with no tire or handling problems.
Anti-sway can greatly REDUCE the sidewall stress at least on thr TV rear tires. I accidentally did an experiment that proved that recently, with an Airstream with a friction anti-sway device that I forgot to put on before the trip in the first hour the rear tires of my TV increased 6 psi from heat, then I stopped and put the anti-sway bar on and the tires dropped 2 psi (to remain 4 psi over the starting pressure) over the next 45 minutes were it stayed for the next 45 minutes and end of the trip.

So same weight, conditions, speeds and type of driving resulted in lower tire temps with anti-sway in use.
__________________
Wazbro is offline   Reply With Quote
Old 11-09-2012, 05:45 PM   #51
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
Less sway = less tire flex

Perry
__________________
perryg114 is offline   Reply With Quote
Old 11-09-2012, 07:02 PM   #52
Vintage Kin
 
slowmover's Avatar
 
Fort Worth , Texas
Join Date: Nov 2006
Posts: 7,598
Images: 1
All trailers wander [snake]. They'll try to pass the TV if given the opportunity (why cute trailer names are funny as hell when the b*#@! is on the way around . . . when Bambi becomes Godzilla).

The "requirement" for WDH is generally the TW, a value specified by the vehicle manufacturer. "Anti-sway" is recommended at that point. But if one wants the latter, then setting up the former can be done, even with light/short TT's.

.
__________________
1990 35' Silver Streak Sterling; 9k GVWR.
2004 DODGE Cummins 305/555; 6-manual; 9k GVWR.
Hensley Arrow. 9-cpm solo, 15-cpm towing
Sold: Silver Streak Model 3411
slowmover is offline   Reply With Quote
Old 11-09-2012, 07:18 PM   #53
Rivet Master
 
dkottum's Avatar
 
2012 25' Flying Cloud
Battle Lake , Minnesota
Join Date: Jun 2009
Posts: 7,716
Quote:
Originally Posted by perryg114 View Post
Less sway = less tire flex

Perry
Also vice versa.

doug k
__________________
dkottum is offline   Reply With Quote
Old 11-10-2012, 09:16 AM   #54
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
I love my cushy car radials on my trailer. Sway has not been a problem.

Perry
__________________
perryg114 is offline   Reply With Quote
Old 11-24-2012, 10:28 AM   #55
1 Rivet Member
 
Currently Looking...
S.E Lower Michigan , Michigan
Join Date: Apr 2012
Posts: 10
Quote:
Originally Posted by CanoeStream View Post
Snip...

In my tyro towing days, I improperly closed the latch on my ball. I engaged the WD bars and they popped the trailer hitch completely off the ball. Nobody was hurt and I quickly lowered the tongue jack to stabilize this mess. I concluded that the spring bar engagement sockets on my truck's hitch bar accounted for much of the tongue weight transfer in my case.
This is not possible! When you draw up the chains, the force between the trailer coupler and the ball increases. There is no possible way that drawing up the chains and engaging the WD bars would cause the trailer to come off the ball. It simply is not physically possible.
Barney
__________________
Barneys is offline   Reply With Quote
Old 11-24-2012, 12:28 PM   #56
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 Barneys View Post
This is not possible! When you draw up the chains, the force between the trailer coupler and the ball increases. There is no possible way that drawing up the chains and engaging the WD bars would cause the trailer to come off the ball. It simply is not physically possible.
Barney
When the tongue jack elevates the tongue and tow vehice, even with arms attached, opening the lock will cause the tow vehicle to drop away.

Andy
__________________

__________________
Inland RV Center, In 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 01:19 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.