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09-28-2014, 07:38 PM
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#1
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Tino
Currently Looking...
Blainville
, Quebec
Join Date: Sep 2009
Posts: 150
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What that mean? Tapered bar on WD...
Hello what that mean a wd whit tapered bar? and what is the benifit? Thanks
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09-28-2014, 07:43 PM
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#2
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by Tino643
Hello what that mean a wd whit tapered bar? and what is the benifit? Thanks
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Reese, which is a top load equalizing hitch brand, uses the tapered bar.
That design allows flexing of the bars.
The side dimension stays the same, but the vertial direction changes from 1 inch at the trunnion to about 1/2 inch at the sway control cam. Those dimensions are for a 600 pound full sway control Reese hitch.
Any rating over that will punish your trailer.
Andy
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09-28-2014, 07:44 PM
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#3
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Rivet Master
1974 Argosy 20
2014 20' Flying Cloud
Kooskia
, Idaho
Join Date: Jul 2009
Posts: 4,591
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I believe that tapered bars are somewhat more flexible than constant section ones, and also are a bit lighter in weight to handle. I don't think they make a big difference one way or the other. I towed with tapered bar Reese hitch bars for many years and it was a good system.
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09-28-2014, 08:07 PM
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#4
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Rivet Master
1981 31' Excella II
New Market
, Alabama
Join Date: Sep 2011
Posts: 6,145
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A tapered bar will most likely allow more up and down movement which may not be great when you hit a woop or are on concrete slab interstate. It will be easier on the trailer. You can always slow down or get some better shocks. I think I am using 750lb tapered bars.
Perry
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09-28-2014, 08:15 PM
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#5
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by idroba
I believe that tapered bars are somewhat more flexible than constant section ones, and also are a bit lighter in weight to handle. I don't think they make a big difference one way or the other. I towed with tapered bar Reese hitch bars for many years and it was a good system.
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If you test a 600 pound rated bar, which is actually 300 pounds since you use the overall complete rating. that is square and the tapered, you will find a huge difference in the bending.
We did a study with differ rated bars and manufacturers to prove that point.
The results of that test is on our website.
Andy
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09-28-2014, 08:27 PM
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#6
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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That article is labeled, "The Hitch Torsion Bar Story."
Andy
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09-29-2014, 06:30 AM
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#7
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by idroba
I believe that tapered bars are somewhat more flexible than constant section ones, and also are a bit lighter in weight to handle. I don't think they make a big difference one way or the other. I towed with tapered bar Reese hitch bars for many years and it was a good system.
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They do make a difference.
Try it.
We researched it.
Andy
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09-29-2014, 07:03 AM
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#8
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Rivet Master
1977 31' Sovereign
1963 26' Overlander
1989 34' Excella
Johnsburg
, Illinois
Join Date: Jul 2005
Posts: 2,944
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From an engineering point of view, tapered bars give more uniform stress within the bar. Stress is caused by the bending moment at any particular cross section along the bar. Therefore; highest at the trunion and lowest where the cam or chain attach. Therefore you can use less steel in the bars without over stressing them, They, therefore, are lighter to handle. Good engineering, but more expensive to make that round or uniform thickness bars.
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09-29-2014, 07:06 AM
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#9
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by dwightdi
From an engineering point of view, tapered bars give more uniform stress within the bar. Stress is caused by the bending moment at any particular cross section along the bar. Therefore; highest at the trunion and lowest where the cam or chain attach. Therefore you can use less steel in the bars without over stressing them, They, therefore, are lighter to handle. Good engineering, but more expensive to make that round or uniform thickness bars.
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Andy
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09-29-2014, 07:06 PM
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#10
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Tino
Currently Looking...
Blainville
, Quebec
Join Date: Sep 2009
Posts: 150
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Thanks every one
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