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Old 09-24-2011, 11:37 AM   #15
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Quote:
Originally Posted by REDNAX View Post
The tail wags the dog, and TV size isn't a determinant by itself given thorough analysis (in which that TV might or might not be found a good choice).
But Hensley's claim to fame is that sway is impossible with their hitch, no matter what the tow vehicle is. I'd really like to know how this happened with what is supposed to be the safest hitch on the market connecting the two.
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Old 09-24-2011, 12:17 PM   #16
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At this time, we only know this:

1. The driver pulled to the Right side of the road to let traffic pass, and then the sway started.

2. The driver stated the trailer came loose from the TV.

3. The trailer turned over on the curb side only. ( 1/4 roll)

4. The TV went over the guard rail, and turned over to the driver, road side. (3/4 roll)

5. The receiver was ripped out from under the truck, and the center section was still attached to the drawbar.

6. The Hensley center section of the hitch was loose from the trailer ball hitch.

7. The Hensley bars that keep the head straight were also ripped loose from the trailer tongue.
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Old 09-24-2011, 12:20 PM   #17
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Old 09-24-2011, 12:45 PM   #18
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Load equalizing hitch platforms and/or receivers are bolted to the tow vehicle.

Welding went out many years ago.

I would suggest that the loss of control was possibly due to the platform coming loose from the tow vehicles frame.

Andy
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Old 09-24-2011, 01:05 PM   #19
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Well that scares the beans out of me! We tow our 23' with a 2010 Titan HP and WB never felt like its been an issue and all of the towing parameters are well within spec. We also tow with a Propride 3P.

Seeing these pics jarred my memory to a post I'd seen a while back on the Titan

http://www.clubtitan.org/forums/show...ght=2010+hitch

Wonder if something like that happened in this case? spooks me since we're getting ready to head over to ABQ next week.....
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Old 09-24-2011, 01:06 PM   #20
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Blow up the picture and you will see that the lateral support welds on the truck hitch have been ripped. Was this the cause or result, it will have to be determined.
Dave

Quote:
Originally Posted by Inland RV Center, In View Post
Load equalizing hitch platforms and/or receivers are bolted to the tow vehicle.

Welding went out many years ago.

I would suggest that the loss of control was possibly due to the platform coming loose from the tow vehicles frame.

Andy
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Old 09-24-2011, 01:21 PM   #21
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I have no idea what caused this. Following with interest. On our first caravan 3 years ago the leaders had someone inspect the welds on the hitches. One was found to have cracks and was repaired on the trip. We were told that there had been incidents of factory hitches with bad welds. This year we went on a caravan and the one of the trailers lost the hitch plate (broken welds) from the tow vechile and lost the trailer. on the way to the caravan. no damage. low speed. breakway switch worked.
Whatever happened in this wreck probably put a lot of extra load on the hitch. Or maybe the hitch failure cause it. I pull over a lot to let people by. Will think about this incident when I do that now. You feel preety safe at 45 mph. but obviously thinks can happen. The only time I have felt my trailer start to sway was in a construction lane that had a really bad hump and twist at about 45, so I know it can happen.
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Old 09-24-2011, 01:57 PM   #22
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The link to the Titan forum is about a hitch receiver with constantly breaking welds that was said to be a 2010 modification by Nissan. The OP says it was a new Titan and the photo may indicate the welds are broken in the same place. The photos are not easy to read if you don't know the particular model yourself and I don't.

This doesn't prove cause and effect, but if Nissan weakened the hitch receiver in 2010, it increases the possibility that the receiver broke loose as the driver moved over to the right. There was talk on the Titan forum that the bumper and hitch receiver are integral.

There isn't a lot of room on that shoulder and I wonder if he nicked the guard rail starting the sway event and then the receiver let go. Or, the sway was caused by the failure of the receiver, possibly because of too fast a move onto the shoulder, and the guard rail caught one or both vehicles. The hitch receiver may have been ready to go and just needed a little more stress than usual. He had to be going pretty fast to flip his Titan over the guardrail.

I think I'll go look at my hitch receiver.

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Old 09-24-2011, 02:37 PM   #23
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I never trusted the "round bar" receivers on the GM's and would feel the same on other makes.
While working at the Chevy store we replaced an awful lot for weld failure and cracks, the receiver head design was not very inspiring either.


This is what I took off our 06 Burb, and what I replaced it with.
Just looking at the difference should explain why.

Something we don't pay enough attention too.....inspect often!!!!

Looks to me like the receiver failed.

Bob
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Old 09-24-2011, 02:51 PM   #24
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I don't see the bolts, or the spots the bolts were torn out of, the bumper area. I see nice, round bolt holes. With nothing in them.
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Old 09-24-2011, 02:53 PM   #25
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IMHO you all have missed two of the knowns that I list that, to me at least, says that the hitch receiver failure is a result and not a cause of the accident. The trailer rolled over 1/4 turn, the truck 3/4 turn.

The resulting twisting between to two, simple tore the receiver hitch apart. I believe ANY receiver would have failed in the same situation.
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Old 09-24-2011, 03:08 PM   #26
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Steve,
Granted it is a bit of a mystery...

2. The driver stated the trailer came loose from the TV.

If in fact #2 happened before the roll-over isn't it possible that receiver/head failure may be the cause?

Toyota like GM and others have had the problem.

Bob
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Old 09-24-2011, 03:26 PM   #27
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Steve, could be. But I want to know how the truck jumped over the guard rail if they were connected until the receiver came apart. Did the truck turn one quarter turn with trailer attached, keep turning, jump, twist off the receiver, land on the right side of the rail and roll another 1/2 turn?

It is curious how the trailer has rotated from being parallel to the rail to perpendicular, just like the truck.

Did the whole rig, swaying wildly (?), turn 90˚ from parallel to the rail, the truck drove over the rail and as the truck is lifted, the hitch comes apart from the stresses (perhaps already weak as Nissan's may be) and everything rolls. But the trailer is rolled on the wrong side if there was any forward momentum. Everything rotated clockwise and that must mean something, but what? If the truck hadn't be airborne it probably wouldn't have rolled as much.

Or (lots of guessing going on), if the hitch came apart because of the accident, wouldn't the parts welded to the side of the receiver be twisted? When I looked at the photos, they may be, but it is hard to tell.

I agree any receiver probably would have failed, but did it fail before the accident, or did it fail because it was weak to start with but that wasn't the cause, or did it fail during the gyrations? I have no idea how strong the strongest production receiver is or what kind of stresses they can withstand but knowledge of that may help to explain cause.

This is all speculation, of course.

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Old 09-24-2011, 03:29 PM   #28
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Quote:
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Steve,
Granted it is a bit of a mystery...

2. The driver stated the trailer came loose from the TV.

Toyota like GM and others have had the problem.

Bob
The driver's statement is a conclusion based on a feeling in the midst of a very stressful situation, and may not be true.

Toyota? Yikes!

Gene
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