Anyone documnt MAX PULLING w/2018, 6.7TD, 68RFE, 4x4?

[WalterJ]

Greetings fellow Patriots!

I'm thinkin' 'bout helping pull some logs from a field's edge to & down a semi-paved road, for a friend. I'm thinkin' 'bout "investing" in some SK75 Dyneema HDPE rope. 3/8" MBS rated @ 19,600#

Stated towing cap. is 17K#, but in 4x4 Low, how much can my modest truck actually drag?

 

[NIsaacs]

17k is rolling weight. Dragging dead weight will depend on your trucks weight and road surface. Is the road private? How big are the logs? 24"x24' log will weigh about 6k and drag hard. Use a tall draw bar and hook short to the log for some lift. I would use a regular logging chocker, like this:

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https://wescovan.com/forestry-loggi...okers/716-wr-2800lbs/716x12ft-knob-eye-midget

 

[Tuesdak]

I'm thinkin' 'bout helping pull some logs from a field's edge to & down a semi-paved road, for a friend

Just saying: It's all "fun" till you break something expensive on YOUR Pickup or kill/seriously injure someone from say the cable breaking. Myself I would use chain over the rope/wire rope although Dad and I never found the other end of a snapped chain we used to try and pull yellow iron out of a ditch long ago. (We wound up pushing it through to get it out instead.)

Doesn't your friend have a beater 4X4 Y'all can tear up instead? Better yet proper tools for the job?

In any case I suggest light amounts and several trips Vs. "What is the max I can drag at once?". This includes more chainsaw time to cut it up before dragging.

 

[WalterJ]

As much as I may have sounded like pulling my rear axle off, this volunteer venture led to the question of how much pulling force (in lbs.) is my truck capable of, on dry road, in 4x4 Low gear. That then led to the question of what size HDPE (Dyneema, etc.) rope would match that stress.

I've watched some YouTube recovery enthusiasts demonstrate various 'block & tackle' setups, and a few have purchased "load cells" to monitor their efforts. I'll leave this query of mine run for a while, maybe catching the attention of one of them thar people.

I'm contemplating a 12K type winch, but me thinks the raw pulling force available when in "gear", is much more. I just want to know some of my limits, etc. Thanks for your kind advice & time.

Wally

 

[Diesel85]

Only way I'd consider what you are doing is getting a C&C 5500 with a PTO hydraulic winch like on a tow truck. But use the winch and not the truck to yank logs.

Better yet, consider using a farm tractor.

I'm with @Tuesdak... it's not a very smart idea.

 

[NIsaacs]

I'm contemplating a 12K type winch, but me thinks the raw pulling force available when in "gear", is much more. I just want to know some of my limits, etc. Thanks for your kind advice & time.

Wally

Winch is too slow if you are going any distance or multiple pulls.

Hook to a sled if you are serious about your trucks towing prowess. If you get in the corn, you are good

 

[AH64ID]

Chain is the worst thing you could use, it’s not designed for dynamic loads. Chain is only better for static loads when you can’t have any stretch, like tying things down.

Rope and wire rope are the safer and more appropriate choice. Compare breaking strengths and design criteria.

Back when I was more into off-roading and if someone was stuck who demanded to use chains to get pulled out I’d just walk away. Way too dangerous.

 

[Road Dog]

As much as I may have sounded like pulling my rear axle off, this volunteer venture led to the question of how much pulling force (in lbs.) is my truck capable of, on dry road, in 4x4 Low gear. That then led to the question of what size HDPE (Dyneema, etc.) rope would match that stress.

I've watched some YouTube recovery enthusiasts demonstrate various 'block & tackle' setups, and a few have purchased "load cells" to monitor their efforts. I'll leave this query of mine run for a while, maybe catching the attention of one of them thar people.

I'm contemplating a 12K type winch, but me thinks the raw pulling force available when in "gear", is much more. I just want to know some of my limits, etc. Thanks for your kind advice & time.

Wally

Your "pulling force" is only relevant for a static (slow) pull. You're trying to overcome the friction of the log on the ground. The static friction (log at rest) will be much higher than the sliding friction. A slow pull from a winch might be fighting static friction the whole way. You need some speed to keep the log moving.

Some people use is a kinetic rope (like Yakum ropes) which stretches like a rubber band. It acts a force multiplier using the speed and mass of your truck to yank the log free.

Steel cable and chain can be dangerous if the cable or chain breaks. That energy has to go somewhere. Usually through the back of your truck. That's why people put a blanket on the cable under tension. It prevents the cable from whipping at high speed.[/URL]