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Old 08-19-2011, 10:28 AM   #15
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Originally Posted by SmokeyWren View Post
No. The other way around. A gooseneck hitch can have the truck leaning one way and the trailer the other, for a lot of degrees of difference. The cheaper fifth-wheel hitches will tilt only forward and backward (for going over bumps), but not sideways. The better fifth wheel hitches have 4-way tilt, but the sideways tilt is limited to only a few degrees. The gooseneck hitch is almost unlimited in the amount of sideways tilt the trailer can have. So if you need to go over the really rough stuff, you would prefer the gooseneck. Thus horse trailers and construction trailers that have to go over rough terrain are usually gooseneck.
Absolutely right and that is a big advantage for the GN for farm, ranch and construction trailers. But as applied to an 8 ft wide fifth wheel trailer, the limiting factor is the amount of clearance between the truck bed and the fiver overhang. Six inches of clearance is good for about 8 degrees of tilt best case, so having side-to-side tilt limited to 4 or 6 degrees does a nice job of protecting the truck from damage. Besides, regardless of hitch type there is plenty of tilt/twist in the truck frame and both truck and trailer suspensions. If more is needed then it is time to use a GN setup with a flatbed or hauler bed and NOT a conventional pickup bed.
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Old 08-19-2011, 01:25 PM   #16
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But as applied to an 8 ft wide fifth wheel trailer, the limiting factor is the amount of clearance between the truck bed and the fiver overhang.

True, but in that case the hitch type wouldn't matter. Whether fifth wheel or gooseneck adapter, given the same trailer, you still have the same limiting factor for sideways tilt before you crunch the top of the pickup bed.

My RV trailer was a 5er with about 6" clearance, but both sides of the top of my bed was crunched after several years of turning around in the rough stuff while visiting kinfolks that live out in the country.

Many race trailers and LQ horse trailers are a full 96"' or 104" wide over the bed, and most have a gooseneck hitch. So they have to watch out for dips and barrow pits (the drainage ditch alongside the road, which Texans call a "bar ditch"), the same way a 5er hauler has to be careful angling across dips and bar ditches.
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Old 08-19-2011, 03:34 PM   #17
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True, but in that case the hitch type wouldn't matter. Whether fifth wheel or gooseneck adapter, given the same trailer, you still have the same limiting factor for sideways tilt before you crunch the top of the pickup bed.

My RV trailer was a 5er with about 6" clearance, but both sides of the top of my bed was crunched after several years of turning around in the rough stuff while visiting kinfolks that live out in the country.

Many race trailers and LQ horse trailers are a full 96"' or 104" wide over the bed, and most have a gooseneck hitch. So they have to watch out for dips and barrow pits (the drainage ditch alongside the road, which Texans call a "bar ditch"), the same way a 5er hauler has to be careful angling across dips and bar ditches.
And that was my point, the extra degrees of movement that a ball mount provides doesn't translate into greater flexibility over a standard fifth wheel hitch when there is only 6 inches of clearance. So, it is an insignificant benefit with a standard pickup bed and GN adaptor mounted on a 5th wheel trailer. The other difference with a purpose built gooseneck trailer is they can easily have more than 6 inches of clearance because they are not attempting to provide standup bedroom height above the hitch like a fifth wheel trailer. The increased clearance means they are less likely to hit the truck bed rails.
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Old 03-04-2012, 01:46 PM   #18
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OK, I just changed to a ranch hitch adapter and had it welded on. Then someone told me about these potential problems. How many have "actually" had issues or is this one of those ghost stories... I am new to 5th wheeling but to me it sounds more like the correct brake adjustment to the 5r is paramount. If the 5r has good brakes which are set correctly that should take most of the stress off of the hitch, no???
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Old 03-04-2012, 02:15 PM   #19
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On our Keystone Montana the warranty would be void if using a GN.
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Old 03-04-2012, 02:32 PM   #20
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Originally Posted by BearLeThere View Post
OK, I just changed to a ranch hitch adapter and had it welded on. Then someone told me about these potential problems. How many have "actually" had issues or is this one of those ghost stories... I am new to 5th wheeling but to me it sounds more like the correct brake adjustment to the 5r is paramount. If the 5r has good brakes which are set correctly that should take most of the stress off of the hitch, no???
It's very real - run a search here for "gooseneck adaptor" and you'll find plenty of reading. 5th wheel trailer frames are NOT built to take gooseneck trailer torsional forces (that's why goosenecks have all the gusseting in the crown), and the heavier the trailer, the greater the torques applied to the pinbox/frame area by the gooseneck adapter lever arm.

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Old 03-04-2012, 03:28 PM   #21
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Real stories

Whenever I want the really story I consult a friend of mine who has a very reputable trailer repair shop. One day in his shop I brought this up. They had at the time a 5th wheel trailer that had a gooseneck conversion. It was in for major frame damage attributable to the stresses put on by the gooseneck conversion. They had to take off the front cap, do a bunch of welding, and put it back together again. Several thousand dollar repair. That made my mind up then and there. I bought a B&W companion the next week. Fantastic hitch and you get the best of both worlds.
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Old 03-04-2012, 04:33 PM   #22
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Reese has the 'Goose Box' that is suppose to be accepted by Lippert.
http://fifthwheeling.rvtravel.com/20...-wheel-to.html
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Old 03-04-2012, 05:47 PM   #23
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I am new to 5th wheeling but to me it sounds more like the correct brake adjustment to the 5r is paramount. If the 5r has good brakes which are set correctly that should take most of the stress off of the hitch, no???
It isn't stress to the hitch that is the issue, but stress to the trailer frame. The added leverage of using a GN adaptor is applied to the fifth wheel frame every time there is any DIFFERENCE of momentum between the trailer and tow vehicle, i.e. braking, accelerating, hitting bumps/potholes, etc.
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Old 03-04-2012, 07:49 PM   #24
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My Reese 20K Pro has a considerable amount of side to side tilt as well as fore and aft. All it takes is the RIGHT hitch.

Ken
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Old 03-05-2012, 08:04 PM   #25
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I am glad that I read this thread. I am shopping for my first 5th wheel and the last two rv sales guys both recommended a goose neck hitch. It sounds like that is bad advice. Thanks for the info!
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Old 03-05-2012, 08:30 PM   #26
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OK, I just changed to a ranch hitch adapter and had it welded on. Then someone told me about these potential problems. How many have "actually" had issues or is this one of those ghost stories... I am new to 5th wheeling but to me it sounds more like the correct brake adjustment to the 5r is paramount. If the 5r has good brakes which are set correctly that should take most of the stress off of the hitch, no???
I tow a 25ft 5er that probably goes about 9000 pounds the way I travel and I use a Colibert "Demand the Brand" adapter that bolts to the king pin pad w/ 4 bolts, and the way I tow, I am frankly not concerned about damage.

Maybe if I smack something with the truck. the bending moment will damage the trailer frame, but in that case I will have bigger fish to fry.

Like Smokey Wren advised (Hey, Smokey, I remember you from the Powerstroke Forum 10+ years ago), you can always add a couple of stringers to negate some of that torque. Since you welded the adapter on, you might as well weld a bit more on there to make it "good."

LOTS of those adapters out there being used, and only a FEW have resulted in damage 5er frames, or they'd have such a bad rep that no one could sell one I'd think.

You don't give your trailer length or weight, but I suspect if you're not too heavy, and drive smoothly you should be OK.

Just my opinion... (and I know many will disagree)

Bob
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Old 03-06-2012, 07:14 AM   #27
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I am glad that I read this thread. I am shopping for my first 5th wheel and the last two rv sales guys both recommended a goose neck hitch. It sounds like that is bad advice. Thanks for the info!
Keep in mind if the OP had asked for those with actual experience please reply then opinions would differ.

I doub't many that replied negativelyhave ever towed a GN trailer or used a adapter but have a opinion.

The best deal for anyone wanting to use a adapter is call your trailer manufacturer and ask if they recommend a adapter. There has been 5th wheel RV manufacturers offer the adapter as a option.

Make the call and eliminate guessing/assumptions for your particular 5er.
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Old 03-06-2012, 07:49 PM   #28
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Reese has the 'Goose Box' that is suppose to be accepted by Lippert.
Fifth Wheelin': "Goose Box" reinvents fifth-wheel to gooseneck crossover

And with this hitch, you will still have the same problem of the increased lever arm and stresses on the pin box to frame attachment area.

As for seeing damage, i have seen two high end trailers with the skin ripped off to repair frame damage and both had been using a GN adapter.

Fom an engineering stand point, if the trailer frame is not designed for a GN hitch, stick with the 5th wheel pin.

Ken
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