Big Loads - Post Photos Number 2

An example of a trailer breaking. One of my customers decided that they could move their big reels cheaper than anybody else, they buy a 60 ton XL 2 3 2 put a 147000 lbs reel on it pick a driver out and leave out of Dickinson with it. The driver doesn't have much trouble except for not getting clearance to come into the Sundance POE to buy a permit that was an 8000 dollar ticket. This driver who has never pulled a multi axle before decides that he needs fuel so he pulls into the Flying J in Gillette bugs his fuel and leaves out the south side entrance that as we all know is extremely steep, when his triple clears the hump the booster takes all the weight and breaks the trailer between the second and third axle. The driver has no clue what happened. So in order to save some money on trucking they spent 250k on a trailer they broke and still paid a guy to haul it the rest of the way south.

 

Got in at 14:30 and slept until 18:30. No work tonight and now I can't sleep.

 

We learn every day Tsavory

 

Try to and this discussion succeeded for today.
No in all seriousness that's why I read posts in certain sections. And look for posts by certain people it's always a learning experience.
I tend to learn alot the hard way but keeping up helps avoid some of them hard lessons.

Added:
That's what I love about open deck no two loads are truly the same and each has its own lesson to be learned or implementing what's all ready learned!

 

Not only what everybody has described about the breaking of the trailer, if you get into a tight turning situation the booster can and will pick the trailer tires off the ground. Then since you are turned at the neck also the 5th wheel will tilt and the trailer will tip to the outside of the turn. Now throw something top heavy on there and you could have a problem.

The other issue if it is your first time pulling one empty and you put too much air in the booster, you will have a 50+ foot long straight truck because the pivot point is now back at the booster... This is from experience... LOL Was running a 2+1 configuration without the jeep, looked in my mirror and wondered why my trailer was in the other lane. Then I remembered and found a place to pull over and let air out.

 

Yea, I haven't miscued that bad before in a long time.
Saw center of the mill roll, Knew where center of weight dist. was for trailer and sat it down. Air scale read heavy moved it some more. Did it 3 times and they were rushing me. Thought my air scales were off..Wrong. Had 65k on the drives, thus the crane deal and moving it 44 inches more to the back

 

I installed a pressurized quick release valve on my stinger for just that. The bags get so much pressure on them it will release the extra pressure very fast to avoid that very situation. Now if you get into a dip where it bottoms the air bags out, then it gets to be interesting.

 

Like a pop off valve?

 

Kinda, at a set pressure it releases until it drains to set pressure. It looks like a xl trailer in passing's post. If I remember correctly they run the air supply straight into the trailer air suspension. Without an adjustable regulator. They just rely on the shims to adjust the weight.

 

I see.

So, you guys have me wondering; would it help if the joint between the trailer and the booster could not only pivot to allow steering, but also rotate tortionally?

Have you ever taken a close look at the joint between the front and back half of an articulated haul truck, like a Cat 730/740 for example? The back rotates completely independent from the front. I wonder if that concept would help. It would be awfully heavy, but would easily handle the strain.

Food for thought.