Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-24-2013, 08:14 AM   #15
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,813
Images: 12
Quote:
Originally Posted by switz View Post
No access to the hitch ball socket because the Hensley is attached all the time, so have to use the jack stand for weighing on the Sherline scale.
To get the tongue weight yu will have to remove the Hensley or know just what portion of the total Hensley weight is still hanging on the ball and subtract that from the weight yu measure. Not the most accurate system because some portion of the Hensley will be hanging forward of the coupler.
__________________

__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 06-24-2013, 08:18 AM   #16
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

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

"I hitched up the trailer and put the scale of a block of wood and raised it off the TV hitch. Started at about 850 to 875 lbs. I repeated about 4 times. Each time the weight went up a bit until it seem to settle in at 975 lbs."

Do not hitch-up, just level the trailer on the scale with the jack.



What scale did you get?

Our 2000Lb scale is very consistent.


BTW...the trailer must be dead level for every attempt.

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 06-24-2013, 08:51 AM   #17
Lost in America
 
mojo's Avatar
 
2015 27' FB International
2006 25' Safari FB SE
2004 19' International CCD
Oak Creek , Arizona
Join Date: Feb 2007
Posts: 1,506
Quote:
Originally Posted by HowieE View Post
To get the tongue weight yu will have to remove the Hensley
By tightening the jacks to remove some of the looseness in the Hensley head, you can rest the Hensley on the scale to get an accurate tongue weight with the Hensley attached.
__________________
This is the strangest life I've ever known - J. Morrison

The Nest Egg - 2015 Airstream International Serenity 27FB
Silverado 2500HD Chevy Duramax Diesel

mojo is online now   Reply With Quote
Old 06-24-2013, 10:20 AM   #18
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,813
Images: 12
Please explain a bit more. If the Hensley is on I can' invision any way you could get an accurate weight of either the tongue or the hitch.
__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 06-24-2013, 10:35 AM   #19
Rivet Master
 
dkottum's Avatar
 
2012 25' Flying Cloud
Battle Lake , Minnesota
Join Date: Jun 2009
Posts: 7,716
Quote:
Originally Posted by mojo View Post
By tightening the jacks to remove some of the looseness in the Hensley head, you can rest the Hensley on the scale to get an accurate tongue weight with the Hensley attached.
This gives us what matters, the weight of the Hensley and trailer tongue together, weighed at the point it connects to the receiver.

doug k
__________________
dkottum is offline   Reply With Quote
Old 06-24-2013, 11:17 AM   #20
Rivet Master
 
HowieE's Avatar
 
1991 34' Excella
Princeton , New Jersey
Join Date: Aug 2003
Posts: 6,813
Images: 12
doug

The original question was how to get the tongue weight of the trailer.
That is an important consideration while towing. It is designed to give the optimum weight to reduce a trailers natural tendency to sway

The stated manufactured tongue weight would be fine because they design the trailer to fall within the 10 to 12 % ration deemed to be the optimum tongue weight while towing the trailer. Now very few of us tow an empty trailer so it is important to know what the loaded tongue weight is and that it remains within the above ratio. The fact that the Hensley is so heavy and positioned so far forward it should not be considered, in total, as tongue weight when seeking the trailers loaded tongue weight. Yes it should be considered against the total weight rating of the receiver. With something that massive and positioned that close to the TV there are 2 considerations here.
__________________
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles

HowieE is offline   Reply With Quote
Old 06-24-2013, 12:21 PM   #21
Lost in America
 
mojo's Avatar
 
2015 27' FB International
2006 25' Safari FB SE
2004 19' International CCD
Oak Creek , Arizona
Join Date: Feb 2007
Posts: 1,506
Here's how I did it, resting the Hensley on the scale closest to the stinger. Moving the scale back and under the jack stand post showed an additional 200 lbs.
Attached Thumbnails
Click image for larger version

Name:	IMG_4731.jpg
Views:	61
Size:	343.2 KB
ID:	189192  
__________________
This is the strangest life I've ever known - J. Morrison

The Nest Egg - 2015 Airstream International Serenity 27FB
Silverado 2500HD Chevy Duramax Diesel

mojo is online now   Reply With Quote
Old 06-24-2013, 01:11 PM   #22
4 Rivet Member
 
withidl's Avatar
 
2002 31' Classic
Houston , Texas
Join Date: Oct 2004
Posts: 440
Images: 1
I'm probably opening myself up to severe criticism for the following, but for what it's worth, the tongue weight being ~10-12% of the AS is not as critical when using a Hensley type hitch interface.

Yes it is ideal to be ~10-12%, but the Hensley type interface through its geometric anti-sway control allows for tongue weights somewhat beyond those of standard tongue on ball hitches.
__________________
withidl is offline   Reply With Quote
Old 06-24-2013, 03:04 PM   #23
Lost in America
 
mojo's Avatar
 
2015 27' FB International
2006 25' Safari FB SE
2004 19' International CCD
Oak Creek , Arizona
Join Date: Feb 2007
Posts: 1,506
Agreed.

But it's still nice to know what the actual dead weight is on the vehicle hitch prior to tightening.
__________________
This is the strangest life I've ever known - J. Morrison

The Nest Egg - 2015 Airstream International Serenity 27FB
Silverado 2500HD Chevy Duramax Diesel

mojo is online now   Reply With Quote
Old 06-24-2013, 04:52 PM   #24
Rivet Master
 
dkottum's Avatar
 
2012 25' Flying Cloud
Battle Lake , Minnesota
Join Date: Jun 2009
Posts: 7,716
Quote:
Originally Posted by mojo View Post
Here's how I did it, resting the Hensley on the scale closest to the stinger. Moving the scale back and under the jack stand post showed an additional 200 lbs.
Good post mojo. The difference is very interesting.

doug k
__________________
dkottum is offline   Reply With Quote
Old 06-24-2013, 07:45 PM   #25
Rivet Master
 
SteveSueMac's Avatar

 
2012 27' Flying Cloud
W , New England
Join Date: Oct 2012
Posts: 5,410
Quote:
Originally Posted by mojo
Here's how I did it, resting the Hensley on the scale closest to the stinger. Moving the scale back and under the jack stand post showed an additional 200 lbs.
I think that's the right location for a vpp hitch. Back at the jack stand isn't. I did a procedure on the scales but am now thinking about investing in a Sherline :-)

Thanks for the photo!
__________________
SteveSueMac is offline   Reply With Quote
Old 06-24-2013, 08:49 PM   #26
4 Rivet Member
 
Livingston , Texas
Join Date: Dec 2007
Posts: 394
Assuming the trailer remains at the same "level" (parallel to the pavement) attitude --

the difference between "tongue weight" measured under the tongue jack and the weight measured at some other point depends on 1) the distance between the jack and the other point and 2) the distance from the jack to the midpoint between the axles.

For example, if the distance from jack to axles is 200" and the distance from jack to other measurement point is 20" (assumed for PP),
the ratio of load measured 20" ahead of jack to load measured at the jack would be 200/(200+20) = 91%.

For these dimensions, if the load measured at the jack is 1000#, the load measured 20" ahead of the jack should be about 910#.

Ron
__________________
Ron Gratz is offline   Reply With Quote
Old 06-24-2013, 10:24 PM   #27
Rivet Master
 
dkottum's Avatar
 
2012 25' Flying Cloud
Battle Lake , Minnesota
Join Date: Jun 2009
Posts: 7,716
This difference in tongue weight relative to the distance measured from the trailer axles was discussed briefly in an earlier thread. I am glad to see mojo post some true numbers, and thanks to Ron Gratz for his usual math genius.

So, many of us just add the trailer tongue weight (measured at the coupler) and the weight of the w.d. hitch together to determine the tongue weight put on the truck receiver.

But because of the added distance from the trailer axle of Hensley/Propride, the actual weight put on the truck receiver is less, as I understand it.

Or, my Propride weighs 225 lbs and my Airstream tongue weight is 875 lbs, totaling 1100 lbs. The weight supported by my truck receiver is actually less than 1100 lbs, because of the added length of the Propride. Yes or no?

doug k
__________________
dkottum is offline   Reply With Quote
Old 06-25-2013, 07:53 AM   #28
Rivet Master
 
switz's Avatar

 
2014 31' Classic
2015 23' International
2013 25' FB International
Apache Junction , Arizona
Join Date: Sep 2012
Posts: 4,799
Images: 8
Post #4 was very informative about the owner's trailer axle's load per axle.

The Airstream parts manual for the 2013 Classics shows that the axle used for both the 27' & 31' models are rated at 5,000 pounds ( the label on the side of the trailer may reflect a different number).

Thus the front axle in the post was actually overloaded if the axles of that particular trailer are actually rated 5,000 pounds. If the poster is using GYM ST D rated tires, they are rated for 2,540 pounds each or 5,080 pounds on the axle.

Thus one could logically expect that the overloaded front tires might be more subject to failure than the rear tires carrying less than their rated load.

The next step would be to weigh each tire position at the same time to check tire loading side to side.

YMMV
__________________

__________________
WBCCI Life Member 5123, AIR 70341, 4CU, WD9EMC

TV - 2012 Dodge 2500 4x4 Cummins HO, automatic, Centramatics, Kelderman level ride airbag suspension, bed shell

2014 31' Classic model 30 twin beds, 50 amp service, 900 watt solar system, Centramatics, Dill TPMS, disc brakes, 16" tires & wheels
switz 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 05:30 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.