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Post by plastictrucker on Apr 18, 2012 13:47:57 GMT -8
How common were cabover log haulers? I know loggers had long wheelbase ,stingers,and disk wheels what else was "standard "for loggers? What would the rear and roof look like on these trailers?  |
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Post by tufftin on Apr 18, 2012 14:24:30 GMT -8
Sure there were cab overs and still are. Just not a previlent sight as they are few.
The back of the chip trailers could have swing doors just like a freight trailer.
Mike
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Post by Muleskinner on Apr 18, 2012 16:32:20 GMT -8
I've seen those type of trailers up here in Oregon. The doors on those are hinged at the top so the back end opens like the tailgate of a dumptruck. They are a lot safer than the swing out type which has to be unlocked on both sides and pose a danger to the driver when walking behind the load. With the swing out he has to walk all the way around the rig n front to unlock the other side, although now days the they do unlock from one side now. The tail gate type unit has enough weight to it to keep the chips directed downward when dumping, instead of straight outward. But it really depends I guess on the area you are in for preference of type. In Oregon most units opt for the tailgate type.
Something I noticed about the picture you posted is that the unit is a dump throuh C- Train unit. In other words its built so the front unit dumps back through the rear unit. I have seen a few of them but not many here. Stalcup Trucking out of Coos Bay had one which all the drivers hated. They said because the front trailer had a habit of opening and the rear trailer was stubborn in the front and sometimes would not open to complete the shoot and chips would pour out around the front of the rear trailer. On a ramp that means a heck of a mess to clean up.
The top of those trailers in the picture, from the ladders going up the sides, are the old style screen door type which were a bear to open and close as they were built using aluminum tube and heavy steel screen attached to it. Later they went to roll over tarp system which was a lot easier. For a good idea what the screens doors looked like, in the chip truck section there are two rigs which My son and I posted. The one I posted which is the hog hauler has the screen doors on it.
Like Mike said the Cab overs were quite popular and here in Oregon there are a lot of them still around. I know one logger in Myrtle Point who Contract hauled out of catching creek for Gross Logging on a couple of loads who would get to the woods before the logging crew and crawl back in the sleeper and catch a little shut eye before loading out.
William
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Post by plastictrucker on Apr 18, 2012 16:45:19 GMT -8
thanks for the help.I have more questions
If the trailers have doors would the front trailer have to have bi-fold doors?.Looks to me the area beween the trailers is tight.
What about the rear trailer front doors?
If they have tailgates the swing area seems tiny beween the 2
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Post by Muleskinner on Apr 18, 2012 17:31:34 GMT -8
The rear Door of the end unit, is a tail gate type on a lot of them. The front trailer dumps by the action of the weight of the chips on the doors. That is when the rig is on the ramp and going into vertical dump, the weight forces the back doors of the front trailer open and then with the loss of chips in the rear trailer the front doors on it swing inward to allow the front load to slide through and out. The bottom of the trailer at the dump end on some have a fixed plate on the outside which sits over top of the one in front of the back, much like a walk through on the vestibule of Passenger rail car, allowing the chips to slide across and into the rear trailer. The doors on the front trailer are regular two piece swing outward doors. The ones on the front of the rear trailer are swing inward doors.
The only drawback on this type of dumping is that unless you have a hydraulic closing system you have to manually shut the doors before pulling off the dumping ramp. If you don't the turning action of the articulated trailers can crush the center doors of the front unit. A real pain and more time wasted on the ramp!!
Most units up here in Oregon which have truck and pup unit or C-Train usually dump the rear trailer first and then return to the Ramp to dump the rear, or Vise verse. They all have tail gate units on them. Easier and faster type dumping units.
Some one who would be good to ask about this and can give you in depth information would be Loghauler70 (Mark) as he drives Chip truck here in Coos County, Oregon where I am located
and can answer a lot of questions. He is on this Forum so fire him a PM. It might take a while to get an answer because of his schedule but he will answer.
William
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