CT18fireman said:
I see farmers pulling haywagons similiar in design in the late summer down the local roads. They are not registered though, they are considered a farm vehicle, towed by a pickup. Seem to tow well, I wonder what would happen if you attempted to register one for highway use.
Key point here, at least with hayracks, is that you tow them pretty slow. I spent summers as a young boy baling hay, and can tell you from experience that a hayrack, behind a tractor, tows well, to a point. Get two racks going at any speed and they start to wander back and forth.
I'd think that a full trailer would be less stable at speed, than a similiar sized semi trailer. Seems that the additional joint in the chain, the dolly, would just add to the possibility of additional unstability. You see UPS rigs on the road all the time, tractor, semitrailer, full trailer, and they seem to pull pretty well, but notice that you need endorsements on your CDL to pull combinations - must be a reason for that.
I took Nac's original post as an inquiry on the feasibility of using a full trailer behind a short wheelbase truck. Maybe he will elaborate on exactly what he's considering, so we get a better picture on what he needs.
In my own case, I've got a Chevy 3500 4WD crewcab, long wheelbase, single rear wheel pickup. I want to pull a trailer that can handle a JD 110 TLB, and all the attachments. I've got a car hauler trailer, but it is really overloaded, so I'm looking for a more substantial trailer. I could get a 12000/14000 GVW bumper pull trailer, and probably do fine - The truck can pull it, but it could lighten the frontend of the truck if I get too much weight too far forward on the trailer. Have considered getting a gooseneck trailer, but then I've got to deal with the hassles of removing the cap over the bed all the time. The right answer for me is to trade the truck for a dually flatbed, and get the gooseneck, but I'd hate to trade the 2004 I've got.
Enter the full trailer into the mix - I could get one, have all the weight on the trailer, and have practically no load on the truck. While my truck is quite heavy and stable, I'm not sure that it is heavy enough to control a even heaver full trailer towed behind. Can my truck, at roughly 3 tons plus, pull a 6 or 7 ton trailer up a hill without loosing traction? How is this rig going to feel braking down a mountain road? Is that trailer going to tend to steer itself past me, pulling my hiney to the side? I'm thinking that if full trailers have an advantage, then we'd see a lot of them out there, used by guys like us. All I see in the equation is more weight, more moving parts, and more difficulties in backing.
Nac's situation is probably different - he may be looking at being able to load equipment without having a vehicle already hooked up to the trailer, maybe the ability to leave long/heavy things on the trailer at a job site. I'll let Nac speak for himself.