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Author Topic: Log Truck with pup  (Read 1890 times)

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Offline WV Sawmiller

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Log Truck with pup
« on: April 13, 2018, 08:35:33 PM »
   I'm no logger and this may be standard practice but I saw something new to me today. They are logging catty cornered and across the road from me. They built a log road and the landing is about 1/4 mile off and above our county road. I have posted a picture or two of some pretty loads of poplar logs coming out of there, usually they haul right at sunset. All I remember seeing were trucks but there may have been a few trailers. The logs looked to be about 30' long that I have seen.

Today I saw a long log truck with a pup trailer (I guess that is what you call a short, second trailer - not just axles for logs to rest on) pull up to the end of the log road. A few minutes later I saw  a loader or dozer (Really did not notice which) had hooked to the trailer and towed the whole rig up to the landing. I guess that makes sense as there is not enough room to circle up there and backing that trailer up the steep hill behind the long truck has to be pretty tough. About an hour before sunset, sure enough they pulled out with the truck and trailer fully loaded.

Is that normal for trucks and trailers to be hauled into final position like that?
Howard Green
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Offline Skeans1

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Re: Log Truck with pup
« Reply #1 on: April 13, 2018, 08:57:19 PM »
With our turkey rack on our long loggers from time to time well have to get pulled in backwards. Sounds like they need to look into how we do it in the PNW where the pup and trailer are loaded on the truck.

Offline starmac

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Re: Log Truck with pup
« Reply #2 on: April 13, 2018, 09:32:35 PM »
When I pull a pup, it is loaded on my truck till I get to the landing, so any turn around that a truck can turn around works. I have pulled the pup in on the ground, but in those cases I stop at the loader and unhook, he picks it up and moves it out of the road until,l I turn around and rehook.
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Offline sawguy21

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Re: Log Truck with pup
« Reply #3 on: April 13, 2018, 11:18:35 PM »
That is common practice here. I have seen trucks pulled up muddy roads but it is very hard on equipment, often results in breakage.
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Offline Southside logger

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Re: Log Truck with pup
« Reply #4 on: April 14, 2018, 01:10:54 AM »
Is it done - yes, is it hard on equipment - OH YES.  
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Offline WV Sawmiller

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Re: Log Truck with pup
« Reply #5 on: April 14, 2018, 07:57:41 AM »
  Thanks guys. I guess they were getting buried under the logs and needed bigger equipment to catch up. Normally they use smaller, straight single trucks rather than trailers. I'm not sure there was even room on the landing to turn the long truck/trailer around let alone when also towing the small trailer. 
Howard Green
WM LT35HDG25(2015) , 2009 4wd Dodge PU, Kawasaki 650 ATV, Sthil 440 & 441, homemade logging arch (w/custom built rear log dolly), JD 750 w/4' wide Bushhog brand FEL

Dad always said "You can shear a sheep a bunch of times but you can only skin him once"

Offline Skeans1

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Re: Log Truck with pup
« Reply #6 on: April 14, 2018, 08:03:27 AM »
 

 Heres a PNW long logger, guys have been getting a pup up on the bunk of the truck as well as the log trailer on top of that loaded up.

Offline mike_belben

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Re: Log Truck with pup
« Reply #7 on: April 14, 2018, 09:26:22 AM »
The front bunk is in the 5th wheel and able to rotate right?  Is the forward/back pivot locked out on the hitch?

Do these pole trailers pintle up to the front bunk or to a hitch on back of the truck chassis?
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Offline Skeans1

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Re: Log Truck with pup
« Reply #8 on: April 14, 2018, 09:48:14 AM »
No fifth wheel, yes the bunk rotates well turning as well as the compensator comes out of the reach. The stick trailers are hitched to the rear of the frame with a pintle hitch to a compensator which is in the reach.

Offline mike_belben

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Re: Log Truck with pup
« Reply #9 on: April 14, 2018, 11:09:36 AM »
Whats compensator and reach mean?
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Offline Skeans1

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Re: Log Truck with pup
« Reply #10 on: April 14, 2018, 11:24:34 AM »
Reach is a tube that connects the truck and trailer together thats adjustable, a compensator is a tube that slides in and out of the reach well turning. So to set your length you adjust the amount of reach in or out if trailer.

Offline starmac

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Re: Log Truck with pup
« Reply #11 on: April 14, 2018, 11:58:42 AM »
Mike, the hitch is several feet behind where the frame on a typical truck stops. When you turn the extended hitch pulls the compensater out of the reach and steers the trailer. If the hitch is the right length behind the front bunks, the trailer wheels follow the same tracks as the trucks.  Even on switchbacks that you have to make 3 point turns with the truck, the trailer stays right with the truck.
ow if you forget to unlock the reach or either bunk, she will not turn, it is a straight line truck for the most part, and there has been many wrecked on account of it.

I seldom ever lock my compensator, and have springs to hold my trailor bunk straight while loading, so never pin it. I just pin the front bunk, and usually remove it after the first couple of rows of logs get loaded.
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline mike_belben

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Re: Log Truck with pup
« Reply #12 on: April 14, 2018, 01:01:19 PM »
Alright.. so the neck is a telescopic tube and the logs get to dictate the length of axle bridge length so it wont bind up in turns?   Kinda sorta ?


The extra stinger length makes sense.  In tight places, i really do like a long driveaxle-to-pin distance on a bumper pull trailer so that they track and back like a skidder.  You dont have to do any setup or wide swinging to account for the trail like on a gooseneck/5er.   

Its a pain to back my goose into twisty woods.. Any fudging up takes a wider road than youve got for correction, or a pullup.  My pintle trailers cant articulate as far, but for the most part dont really need to.  They take so much less swing of the truck because of the extra radius from axle to pin.
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Offline starmac

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Re: Log Truck with pup
« Reply #13 on: April 14, 2018, 03:21:20 PM »
Yes you have pretty much got it. You adjust the reach to how far you want your bunks apart. In this state our bridge determines how much we can haul.  Hauling 33 foot logs, most log trucks can not quite bridge as much as we are allowed on 5 axles. I can easily because my truck is 305 wheel base, but it makes it harder to turn around in some of the turnaround spots they build for us. When hauling 33 foot logs, I set the bunks 30 foot apart, to get maximum bridge weight, longer logs is no problem.

We hardly ever back these up with the trailer on the ground, but they are not bad to back up at all.
Old LT40HD, old log truck, old MM forklift, and several huskies.

Offline moodnacreek

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Re: Log Truck with pup
« Reply #14 on: April 15, 2018, 07:29:02 PM »
Each wooded territory has it's own methods of log trucking. Tree length pole trailer , common in the p. n. w. today was done here [ lower n.y.s.] at least until the late fifties in virgin w. pine.  Anybody remember trip bunks ? Round posts in well pipe for stakes are gone now. Dead junk yard axel on a 1 1/2 ton, then twin screw, next picker trucks and tri axel. I don't know when pup trailers became common, they also went to tri axel and know it's hay wagon pup's. I suppose the Michigan trains are the most impressive.

Offline Ron Scott

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Re: Log Truck with pup
« Reply #15 on: April 15, 2018, 09:04:42 PM »
Tying down the chains on a loaded Michigan Pup behind a Western Star.

Offline mike_belben

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Re: Log Truck with pup
« Reply #16 on: April 15, 2018, 10:35:56 PM »
I have seen gutted full floater housing welded under the back of a 1ton c&c farm hauler.  Empty it was about 6" off the ground but when overloaded the unsprung dead axle prevents the rear leafs from going negative.  Like training wheels sorta.
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