Reply
 
Thread Tools Search this Thread Display Modes
 
Old 05-27-2011, 07:53 AM   #29
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

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

Next time your hitched, tension your bars fully, measure the distance from the top of all four wheelhouse openings to the ground on the TV. Then release tension and measure again. You will notice that when tensioned the front measurements will be less than when no tension is applied to the WD bars, that difference represents the added weight transferred to the TV front axle.

Your CAT scale weights will confirm those measurements.
__________________

__________________
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 05-27-2011, 09:02 AM   #30
one of those
 
Gringo's Avatar
 
2011 27 FB International
'03 F250 PSD , Airstream summers, Catalac winters
Join Date: Apr 2011
Posts: 1,091
We haven't bought the tow truck part of this whole equation yet. I rented a new F350 for our first little four day trip, and it only had a straight receiver hitch. So I have absolutely NO first hand experience with these doo dads......yet. And we didn't appear to need anything other than that straight hitch on the Ford we rented.

That's why I am asking all these asinine questions. I am trying to figure out whether we need one of these and a smaller truck, or just the bigger truck like the one we rented, without the WDH.

If I understand what AirsDream is saying, the two trunnions are essentially levers lifting the rear of the tow vehicle frame. basically, a splint across the vertical forces between the two vehicular frames when the tongue weight is transferred from the jack to the tow hitch. Essentially a mechanical extension of the tow truck frame.

so, in effect, they turn the hitch into a wheel barrow....lifting forces the same that pick up a wheelbarrow's feet and put the weight on the front axle and the end of the levers...right?
__________________

__________________
A Blog from the Devil's Triangle
http://2gringos.blogspot.com/
Gringo is offline   Reply With Quote
Old 05-27-2011, 09:14 AM   #31
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , WNY
Join Date: Jun 2007
Posts: 11,153
Images: 1
Quote:
Originally Posted by Gringo View Post
We haven't bought the tow truck part of this whole equation yet. I rented a new F350 for our first little four day trip, and it only had a straight receiver hitch. So I have absolutely NO first hand experience with these doo dads......yet. And we didn't appear to need anything other than that straight hitch on the Ford we rented.

That's why I am asking all these asinine questions. I am trying to figure out whether we need one of these and a smaller truck, or just the bigger truck like the one we rented, without the WDH.

If I understand what AirsDream is saying, the two trunnions are essentially levers lifting the rear of the tow vehicle frame. basically, a splint across the vertical forces between the two vehicular frames when the tongue weight is transferred from the jack to the tow hitch. Essentially a mechanical extension of the tow truck frame.

so, in effect, they turn the hitch into a wheel barrow....lifting forces the same that pick up a wheelbarrow's feet and put the weight on the front axle and the end of the levers...right?
HOSANNA....I tink 'ya got It, must be the Triangle

Now about that 350 suspension and how much the Stream likes a softer ride,
another time maybe...
__________________
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 05-27-2011, 09:32 AM   #32
Rivet Master
 
Goal15's Avatar
 
2006 23' Safari SE
Dallas , Texas
Join Date: Sep 2010
Posts: 1,673
Images: 1
So therefore . . .

If my front wheel well measures 36.5 unhitched and when i put the wd hitch on and tension it up, if it remains at 36.5 I haven't actually shifted any of the weight forward?

RobertCross,

Which way do I go on the chains to adjust that? PO said that he used next to last link from end of chain. I did that a couple of times and thought that the 23 ft Safari was pushing my 5.7 V8 Tundra Double Cab around a bit too much on some of the back roads with dips so i moved it down a link so that ther were two links not under tension instead of one. Thought that it made some difference but it didn't change my wheel well height in the front and the back actually went up a half inch.

Scheduled to go into local AS dealer service dept to check a couple of things including set up of wd hitch but all advice is welcomed in the interim. And I don't even have the Triangle to blame.... Although I do have to pass Southfork on the way to and from storage, so it could be something JR Ewing did . . .
__________________
Goal15 is offline   Reply With Quote
Old 05-27-2011, 09:43 AM   #33
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

 
2003 25' Classic
Zanadude Nebula , WNY
Join Date: Jun 2007
Posts: 11,153
Images: 1
Quote:
Originally Posted by Goal15 View Post
If my front wheel well measures 36.5 unhitched and when i put the wd hitch on and tension it up, if it remains at 36.5 I haven't actually shifted any of the weight forward?
You have...Thats the exact goal we are all after!!!

Next time you are out, stop at the CAT scales and weigh the rig with the bars tensioned and not. This will give you printed evidence of what you have accomplished.

Stream Safe..
__________________
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 05-27-2011, 09:52 AM   #34
Rivet Master
 
Goal15's Avatar
 
2006 23' Safari SE
Dallas , Texas
Join Date: Sep 2010
Posts: 1,673
Images: 1
Thanks Bob.

Have already weighed on CAT scale with AS connected, so I guess I need to go back and weigh just the truck to see what my benchmark truck axle weights are when not under tension. I thought in your prior post that the front height would be less than the benchmark if weight was being transferred forward, in my case 36.5 would go to 36 or 35.5, but I guess the goal is same height when under tension?
__________________
Goal15 is offline   Reply With Quote
Old 05-27-2011, 10:06 AM   #35
CLOUDSPLITTER "Tahawas"
 
ROBERT CROSS's Avatar

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

Thats what I did on our first trip fully loaded.

Got a base weight on the TV alone, then the rig with and without bars tensioned. I even went so far as separate weights at different bar settings. Most scales will allow multiple weighings at reduced rates.

Remember a level trailer and TV is the ultimate Goal.
__________________
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 05-27-2011, 10:13 AM   #36
Rivet Master
 
Goal15's Avatar
 
2006 23' Safari SE
Dallas , Texas
Join Date: Sep 2010
Posts: 1,673
Images: 1
ultimate goal ...

well, actually, now that you brought it up . . . ultimate goal is a bicycle kick from the edge of the penalty area into the upper 90 just seconds before the referee's whistle blows . . .

gooooooooooooooolllllllllllllllllllllllllll!!!!!!! !!

but i digress.
__________________
Goal15 is offline   Reply With Quote
Old 05-27-2011, 04:24 PM   #37
Rivet Master
 
dkottum's Avatar
 
2012 25' Flying Cloud
Battle Lake , Minnesota
Join Date: Jun 2009
Posts: 7,716
It may be possible and dangerous to add too much lift with the w.d. bars, so the back axle of the tow vehicle is too light and not getting enough traction. I avoid this condition by measuring the distance of the rear fender well to ground before hooking up, then measure again after hooking up to ensure the fender well is a little lower (but especially not higher).

This is in compliance with Equal-I-Zer brand hitch instructions.

doug k
__________________
dkottum is offline   Reply With Quote
Old 05-27-2011, 04:49 PM   #38
one of those
 
Gringo's Avatar
 
2011 27 FB International
'03 F250 PSD , Airstream summers, Catalac winters
Join Date: Apr 2011
Posts: 1,091
So, in a perfect installation, would the front bumper and rear bumper go down equal amounts, if they were equally preloaded? Or should it be something like a 60/40 ratio or similar? Wouldn't be too hard to measure proportionally with a metric ruler.
I can't do fractional inches into digital inches in my head very well. mike-mike's I understand.
__________________
A Blog from the Devil's Triangle
http://2gringos.blogspot.com/
Gringo is offline   Reply With Quote
Old 05-27-2011, 05:59 PM   #39
steel/aluminum fabricator
 
2004 22' International CCD
Penticton , British Columbia
Join Date: Oct 2010
Posts: 132
Wingeezer. Yes. I call them draw bars only because i really dont know what to call em.But you get the picture.

Gringo. You nailed the wheelbarrow scenario. Thats it exactly.
Your ultimate goal is to have the TV exactly level ,and the trailer exactly level with the TV.
With your wd system dialed in you should be able to drive over dipps in the road and not even feel(or barely) the trailer behind you.
On my Tacoma for example, i used to tow my 13 foot boler with a weight of maximum 2000lbs fully loaded. Going over dipps in the road i could feel the back end of the truck bucking and bouncing a bit. With my 22 foot airstream weighing in at around 5000lbs i can barely feel the trailer behind me. Makes a huge difference.
__________________
zedex is offline   Reply With Quote
Old 05-27-2011, 06:58 PM   #40
Rivet Master
 
dkottum's Avatar
 
2012 25' Flying Cloud
Battle Lake , Minnesota
Join Date: Jun 2009
Posts: 7,716
Yes Gringo, the front and rear bumpers should go down equally. The tow vehicle will be level only if it was level to begin with.

doug k
__________________
dkottum is offline   Reply With Quote
Old 05-27-2011, 07:24 PM   #41
Rivet Master
 
Wingeezer's Avatar
 
2005 30' Classic
Burlington , Ontario
Join Date: Sep 2008
Posts: 2,708
Quote:
Originally Posted by Gringo View Post
I'm still having a bit of trouble visualizing what's going on here. With only one attachment point to the tow vehicle ( the ball and socket) and that point being fully articulated and allowed to swivel, what is making the "force" in the diagram jump over the rear of the tow vehicle wheels? All the weight at the tow vehicle appears to still be pushing down on the hitch area arond that ball. All of the weight still looks to be leveraging the rear of the tow truck frame downward, with the rear axle being the fulcrum...
You can consider the spring bars or equalizing arms (labelled draw bar in the sketch) as a ridgid extension of the tow vehicle's frame.

As you see in the sketch, it extends under the trailers frame. Now, if you pull up on the ends of the spring bars with a chain attached to the trailer frame, you are essentially trying to put the tow vehicle frame and the trailer frame in a straight line, counter acting the tendancy of both the trailer and tow vehicle frames to tilt downward towards the ball due to the weight of f the trailer tongue on the ball.


It is this attempt to straightening things out so that both trailer and tow vehicle frames into a straight line when the spring bars are pulled up by the chains that throws some weight off the ball up to the tow vehicles front wheels and some back on the trailer wheels.

That's the way I think of it anyway, hope this helps rather than confuses!

Brian.
__________________
Brian & Connie Mitchell

2005 Classic 30'
Hensley Arrow / Centramatics
2008 GMC Sierra SLT 2500HD,4x4,Crew Cab, Diesel, Leer cap.
Wingeezer is offline   Reply With Quote
Old 05-27-2011, 10:13 PM   #42
Rivet Master
 
Goal15's Avatar
 
2006 23' Safari SE
Dallas , Texas
Join Date: Sep 2010
Posts: 1,673
Images: 1
That's what I'm looking for

Zedex hit the nail on the head.... i want to get my wd dialed in so that at 6000 lbs and my double cab Tundra i can barely feel the trailer behind me when i go over a dip... no bucking and bouncing...


Going over dipps in the road i could feel the back end of the truck bucking and bouncing a bit. With my 22 foot airstream weighing in at around 5000lbs i can barely feel the trailer behind me. Makes a huge difference.



__________________
__________________

__________________
Goal15 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
Ok I feel dumb Nightwatch Electrical - Systems, Generators, Batteries & Solar 10 02-03-2012 02:33 PM
$1,041.95 lost at sewer dump Janet H Our Community 61 02-26-2011 11:06 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 06:47 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.