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-   -   pitching the fifth wheel (https://www.classadrivers.com/forum/anything-everything/26935-pitching-fifth-wheel.html)

yougotto 05-15-2007 12:42 PM

pitching the fifth wheel
 
what do you think of a device to pitch each side of the fifth wheel up and down (pitch in the direction perpendicular to the chasis) so you can manually level the fifth wheel to the trailer at many steep angles, even pick up the trailer, and then manually level the trailer by pitching the fifth wheel, to slide the king pin in on the first try, most of the time?

TK THE TRUCKER 05-15-2007 12:53 PM

I believe if the fifth wheel was allowed to tilt side to side on top of front to back the trailer would be pretty unstable. The only thing keeping the trailer upright would be the tandems way at the back of the trailer. The fact that the fifth wheel can't tilt side to side helps stabilize the trailer. If it could tilt side to side and it was loaded heavy on one side it would be in a constant lean. This style fifth wheel you're talking about is used a lot in the camper world. However the wheel bases are shorter and there's a big weight difference and the trailer center of gravity is different. :) :)

silvan 05-15-2007 01:17 PM


Originally Posted by TK THE TRUCKER
[...]big weight difference and the trailer center of gravity is different. :) :)

Plus I can already slide the kingpin in on the first try about 99.99% of the time. It's called practice dear boy, practice.

Hat Rak 05-15-2007 01:38 PM

You get an A for the thought. Just be remember to ask yourself "why would anyone NEED to have and use this idea of mine?" and it won't be long before your ideas equate to dollar signs. ;)

jorlee 05-15-2007 02:29 PM

I do believe that belly dump trailers have this on the kingpin. If it was added to the truck it would add weight, and another wear point. Both of which is not needed. If the trailer is tilted, the truck should tilt some to when backing under. Most have air bags which allow some degree of tilt, when on uneven surface.

Not a bad idea for offroad use, but I can't see why it would be needed for hooking up a trailer. Usually are left parked on level ground.

COLT 05-15-2007 02:59 PM

jorlee, Whats with the pics on your potobucket link ????

jorlee 05-15-2007 04:19 PM


Originally Posted by COLT
jorlee, Whats with the pics on your potobucket link ????

The main page, are pics I had gotten in an email. Guess a disgruntled worker did that after work. Don't remember all the details of it.

The sub albums 2003 is my nice pickup, Construction job is the summer job, and the Ranger is the pickup I used to have.

yougotto 05-16-2007 03:08 AM

the pivot is not like the fifth wheel pivots now but slave cyclinders attached to its base, attached to one master cylinder, it only pivots when you want it to

Rawlco 05-16-2007 03:16 AM

A standard Off Road fifth wheel does tilt side to side. When working in the woods on uneaven ground you will need that extra axis of motion to keep the drives in contact with the ground. These have a lockout that you need to engage to prevent the side to side roll when going down the road at highway speeds, otherwise a small bump would start a dangerous oscillation resulting in the truck and trailer sliding down the road on one side or the other.

COLT 05-16-2007 03:31 AM

The b train I pull has air bags between the trailer and the pin plate :shock: Lets just say, with a legal axel weight load...I haul fluid, it really leans in the corners :shock:


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