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Open Roads Forum  >  Towing

 > Weight Distribution (WD) Hitch --- How it Works

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tluxon

Kirkland, WA

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Posted: 09/12/04 09:38pm Link  |  Print  |  Notify Moderator

Great job, Ron. I like the idea of putting that summary at the top of the thread in the first post. I think it's simple enough for most newbies to follow and accurate enough to avoid confusion.


Tim -
wife Beverly & 2 boys who love camping
2002 K2500 Suburban 8.1L 4.10 Prodigy
2005 Sunnybrook 30FKS HP Dual Cam
Replaced 2000 Sunnybrook 26FK on 8/6/04



tluxon

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Posted: 09/12/04 09:43pm Link  |  Print  |  Notify Moderator

Quote:

thomas malenich wrote:
I am thinking of starting a new thread and calling it "Understanding payload and GVWR limits".
Thomas, I think you have a great idea. One thing I would add is some detail related to those whose TT tires don't have a fully-inflated load rating that adds up to the TT's GVWR. It might help them figure out if they're overloading those tires when adding the load from a WD system.

All the best!

thomas malenich

sound beach, new york 11789

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Posted: 09/12/04 09:45pm Link  |  Print  |  Notify Moderator

Ron, that summary really looks great. I might just frame it and hang it in the bathroom of our trailer.


Thomas and Laura Malenich
1988 Suburban 1500, 4WD
Scotty 16 1/2' , smaller and loving it
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BarneyS

S.E. Lower Michigan

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Posted: 09/13/04 11:43am Link  |  Print  |  Notify Moderator

Ron, I like it as well! Congratulations on bringing this thread to a full circle. Is it time to petition Admin to make it sticky?
(after you make the edit )
Barney


2004 Sunnybrook Titan 30FKS TT
Hensley "Arrow" 1400# hitch
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Ron Gratz

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Posted: 09/14/04 05:32am Link  |  Print  |  Notify Moderator

Quote:

I am thinking of starting a new thread and calling it "Understanding payload and GVWR limits".
Quote:


Tom,
If I saw a topic with this title, I would assume it pertained to why a tow vehicle is limited to carrying a certain amount. However, from your writeup, I assume you are talking about the contribution of tongue weight, hitch head weight, and weight distribution to load on the TV.

Rather than going through all the percentage calculations, it might suffice to say that, for estimatimg purposes, one can assume that a properly installed WD system can decrease the vertical load on the receiver by an amount equal to 1/3 of the hitch weight. However, one should always measure the actual weights for comparison with the TV and TT ratings.

Ron

Ron Gratz

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Posted: 09/14/04 05:50am Link  |  Print  |  Notify Moderator

Quote:

--- Is it time to petition Admin to make it sticky?
(after you make the edit )
Barney

Barney,

It looks like the thread has run its course. I will edit the first post this evening if there are no additional inputs.

As for making it sticky -- I have mixed feelings about that. I tend not to read the new postings to the sticky topics. Because of the title, anyone doing a search for "weight distribution" will find the thread. Also, the thread is referenced in the FAQs.

Just my thoughts.

Ron

thomas malenich

sound beach, new york 11789

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Posted: 09/14/04 07:19am Link  |  Print  |  Notify Moderator

Tom,
If I saw a topic with this title, I would assume it pertained to why a tow vehicle is limited to carrying a certain amount. However, from your writeup, I assume you are talking about the contribution of tongue weight, hitch head weight, and weight distribution to load on the TV.

Rather than going through all the percentage calculations, it might suffice to say that, for estimatimg purposes, one can assume that a properly installed WD system can decrease the vertical load on the receiver by an amount equal to 1/3 of the hitch weight. However, one should always measure the actual weights for comparison with the TV and TT ratings.

Thanks Ron,
____________________________________________________________________

I did want to make a point of how much (in percentage) a WD hitch relieves the rear axle, hitch, and payload capacity.
I was not going to go through the percentage calculations - just use some of the results.

I am still not sure about the weight of the WD hitch itself - would any of the 100#s be noticed in the rear axle load (after engagement)?
Would the full 100#s be used to reduce the hitch capacity in my example from 300#s to 200#s removed?
I know that a Hensley would be added to the tongue weight, but not sure about an Equal-i-zer or Dual Cam hitch. Seems like they would not become a part of tongue weight, but rather would be primarily supported by the TV hitch.

* This post was edited 09/14/04 05:55pm by thomas malenich *

BarneyS

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Posted: 09/14/04 12:29pm Link  |  Print  |  Notify Moderator

Ron,
I think it would be a good addition to the permanent threads at the top. The search engine would still find it and it would be available to new members to discover also. If we let it slide down the pages, it will only be available by search. I am not going to lock it either so you or others will still be able to post to it even if it is made sticky.

I just want to say one more thing about this thread.
It has been just about the most informative thread I have come across in all the forums. The thinking, effort, and cooperation that has occurred between you and the other members in the making of this thread has been outstanding. Congratulations to you and all the others for all your efforts. I will contact Admin and petition that this thread be made sticky at the top of the Towing Forum.
Thanks - all of you!
Barney

SpoiledRotten

Central Mississippi

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Posted: 09/14/04 05:50pm Link  |  Print  |  Notify Moderator

Quote:


So now your going to pull the ole no point in continuing because......and do not want further confuse the issue routine.


After all of this, I bet neither one of you have got your weight distribution hitches set correct!!!


Just the 3 of us...SpoiledRotten, TotallyRotten, and ALittleRotten
2000 F-250 Lariat, CC
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Ron Gratz

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Posted: 09/14/04 09:11pm Link  |  Print  |  Notify Moderator

Quote:

I am still not sure about the weight of the WD hitch itself - would any of the 100#s be noticed in the rear axle load (after engagement)?
Would the full 100#s be used to reduce the hitch capacity in my example from 300#s to 200#s removed?

Tom,

The center of gravity of the WD hitch itself will be approximately under the ball. Therefore, the weight of the hitch simply can be added to the tongue weight when determining how much additional load is leveraged onto the TV's rear axle and removed from the front axle. For your example, the weight of the hitch would add 150# to the rear axle and remove 50# from the front.

In your example, the load on the receiver before WD would be 900# plus 100# for the hitch for a total of 1000#. This would be reduced to 700# when the WD bars are loaded to 2000#. The change in axle loads due to the WD hitch would remain the same.

Ron

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