Heavy Haul Miscellaneous Thoughts, Ideas and Questions
Discussion in 'Heavy Haul Trucking Forum' started by Oscar the KW, Feb 8, 2015.
Page 33 of 56
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Yeah but using an overhead crane is about 1.5 hours faster and I am not tired at the end. But with the curfew, I could not get to the trailer place before they closed. Oh well at least I should sleep good tonight
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tsavory Thanks this.
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Heavy haul truck owners, we are preparing to purchase a a 7/8 axle set up. In all likelihood, both truck and trailer will be purchased new. We would be going with a 4 axle truck and a three axle trailer with a flip/stinger fourth axle. I would like to learn more about a sliding fifth wheel. I understand the general concept, but I would like to understand more about what it does in a heavy haul set up. We have stationary 5th wheels and set up our open deck trucks to carry 12-12500 on the steer axle and never have an issue. From what I have listened to, you all seem to indicate you need to utilize the flip neck and slide the fifth wheel ahead to carry additional weight on the steer. Is this only when you have a heavy front axle and are attempting to carry 12-20K on the front axle? I think we would also need the flip neck to move the load back if we have 4 axles deployed on the trailer. In this instance do you also slide your 5th wheel back or do you leave it centered so you can still carry something on your steer axle?
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As you load the trailer heavier the position of the fifth wheel will be very important and will need to be adjusted when you put the lift axle down. If you leave the fifth wheel in the 3 axle configuration ( likely slightly forward of center between the two fixed drive axles) and put the lift axle down it will take weight of the steer axle.
As an example, my steer weight with my entire trailer attached but the lift axle up is about 16k. When I put the lift axle down that drops to lass than 14k and when loaded
To 11-12k.
With the light steer the 3 drive axles will push when you try to steer - an uncomfortable sensation to say the least. By sliding forward you move the weight forward to increase steer weight and there by overall possible gross weight. You need enough slide to accommodate as much neck as you can.
You also want to slide forward to reduce your overall length, this maybe the difference between an escort for length or no escort.
The flip neck will also help move the center weight forward in the well, helping you split the load weight front to back.
Since you are ordering make sure
you check on what your overall length is going to be and how that plays into where you run for escort requirements.
Hope this helps someJDP, cpape, johndeere4020 and 1 other person Thank this. -
Ron pretty well nailed it. I wouldn't spec a 4 axle without a sliding 5th wheel, and I wouldn't spec one with front axle rated for less than 16k either.
JDP, cpape and johndeere4020 Thank this. -
Rontonio Thanks this.
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If you are Spec'ing a hyd neck - I would look very hard at ordering a trailer with detachable wheel area and ordering a rail deck to go with your flat deck. This would help you haul the heavier wheel loaders from/to the east coast ports and reduce your empty weight. It might allow you to haul some
Of the heavier RT cranes.
Yes you will need a more skilled driver than me but the rates may make it worthwhile to have in your inventory. I would have one for my trailer but ran out of budgetJDP Thanks this. -
SH - think I would rather have more well - I know I fight that now - it's an 8 axle (closed 4) if I could be under 90' I would get 29' (actually that is what mine was)
If you are going hyd neck go all the way and get. Hyd flip neck - I have one and it is greatSuperhauler Thanks this.
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