5th Wheel to Gooseneck Adapters

BarneyS wrote:

Barney

Then please feel free to close the thread.

Rusty

Barney

RustyJC wrote:

DSteiner51 wrote:
Comparing a picture of a gooseneck and 5th wheel is as ridiculous as comparing a pickup to a class 8 tractor. Totally different applications.

Not really in the case when one bolts a gooseneck adapter onto the 5th wheel frame. The comparison was intended to illustrate the differences in how forces are transferred from the tow vehicle coupling to the frame areas of the trailer.

Rusty

Yes it is.

Also, please explain why those with factory 5th wheels have so many frames break and so few with gooseneck adaptors. There is more to it then just the 'leverage' but 'highly educated' engineers don't seem to be able to comprehend. Real life facts sometimes can be a *itch... not learned in college and sometimes contrary to what is taught in college. I possibly stressed my new 5th wheel the other day every bit as much getting in and out of my campsite as I stressed my old 5th wheel/gooseneck adaptor in 14 years of towing.

Rusty wrote:
Actually, I said the same thing a few posts up - see my quote below. I challenge you to find the word "all" that you attributed to me in my quoted statement. You won't because it isn't there. Rather, I was comparing two general classes of trailers, 5th wheels and goosenecks. My dear old schoolteacher mother taught me very early in life about being careful using absolutes such as "all" and "never" - there are almost always exceptions.

As far as credentials and experience, I'll let mine stand on their own merits.

Your first reply said quote;
"5th wheel trailers are not structurally designed to be gooseneck trailers. They don't have the heavy steel and gusseting around the crown that a gooseneck trailer has, and the higher loading imposed by a gooseneck adapter can lead to structural failure in the pinbox and surrounding frame area. 5th wheel trailers are designed to be pulled with 5th wheel hitches."

I said;
"A blanket statement or a certain worded statement that "all" 5th wheel trailers aren't designed for using a GN adapter is simply a inaccurate opinion."

You have made it clear over and over and over your dislike of the GN adapter Rusty to the point you have beat everyone over the head with it time after time.

You made your point. Time to let it go.

DSteiner51 wrote:
Comparing a picture of a gooseneck and 5th wheel is as ridiculous as comparing a pickup to a class 8 tractor. Totally different applications.

Not really in the case when one bolts a gooseneck adapter onto the 5th wheel frame. The comparison was intended to illustrate the differences in how forces are transferred from the tow vehicle coupling to the frame areas of the trailer.

Rusty

RustyJC wrote:
5th wheel frame



Gooseneck frame



Rusty

Sorry, this comparison is extremely ridiculous. The 5 wheel Rv gets much less stress then the gooseneck. First off the gooseneck is designed for maximum load in soft off road conditions. 2nd, the goose neck is made to get large round bales loaded up front first then loaded on toward the back or a heavy piece of equipment loaded from the rear... possibly heavy enough to raise or nearly raise the back of the truck off the ground.

An Rv never sees this type of stress. Maximum load shift my 5th wheel sees is my wife and I walking from the back to the front or front to back or approx 300 lb shift, not tons. I don't pull mine thru soft fields or thru washouts either as the gooseneck was designed to do.

Comparing a picture of a gooseneck and 5th wheel is as ridiculous as comparing a pickup to a class 8 tractor. Totally different applications.

5th wheel frame



Gooseneck frame



Rusty

JIMNLIN wrote:
Of course we know different as evident some 5th wheel trailers come with a GN adapter as a option from the trailer maker.

A blanket statement or a certain worded statement that all 5th wheel trailers aren't designed for using a GN adapter is simply a inaccurate opinion.

Just because FR doesn't recommend them doesn't mean all manufacturers do so.

As other more experienced folks have said check the the trailer maker first.

Actually, I said the same thing a few posts up - see my quote below. I challenge you to find the word "all" that you attributed to me in my quoted statement. You won't because it isn't there. Rather, I was comparing two general classes of trailers, 5th wheels and goosenecks. My dear old schoolteacher mother taught me very early in life about being careful using absolutes such as "all" and "never" - there are almost always exceptions.

As far as credentials and experience, I'll let mine stand on their own merits.

RustyJC wrote:
If the frame is designed for the gooseneck hitch as I understand some of the Open Road models are, that's fine. Most 5th wheel frames aren't, though. The laws of physics are basically immutable - ignore them at your own peril.

Rusty

JIMNLIN wrote:
Of course we know different as evident some 5th wheel trailers come with a GN adapter as a option from the trailer maker.

A blanket statement or a certain worded statement that all 5th wheel trailers aren't designed for using a GN adapter is simply a inaccurate opinion.

Just because FR doesn't recommend them doesn't mean all manufacturers do so.

As other more experienced folks have said check the the trailer maker first.

One would =ass=ume that the mfrs that do offer that type of hitch, some models of Open Range come to mind, have done their homework and engineer their products accordingly. Just sayin'... :h

Lyle

Of course we know different as evident some 5th wheel trailers come with a GN adapter as a option from the trailer maker.

A blanket statement or a certain worded statement that all 5th wheel trailers aren't designed for using a GN adapter is simply a inaccurate opinion.

Just because FR doesn't recommend them doesn't mean all manufacturers do so.

As other more experienced folks have said check the the trailer maker first.