Which winching rope?

[Old Mill Tree Care]

Ahhh my bad

 

Wherever possible I use a chunk of 22mm pollyprop with mine, that way its not tragic if it gets landed on

 

I was thinking of this but can't find any info on how strong it is. Any ideas anyone?

Thanks.

[treequip]

I was thinking of this but can't find any info on how strong it is. Any ideas anyone?

Thanks.

 

Here you go

 

Polypropylene Fiber Rope - Strength

[morten]

Here you go

 

Polypropylene Fiber Rope - Strength

 

I would have a few problems using polypropylene ropes.

 

1. They are horribly dynamic, i.e. they stretch a lot when loaded.

 

2. They weigh a lot and take up a lot of space (for a given strength).

 

3. Even if you choose a 22 mm diameter polypropylene rope, you will have a SWL of less than 950 kg and weigh 8.4 kg/20 m), given a safety factor of 5 (which, I believe is the norm in this type of situation). With my Tirfor TU16, I would need a 30 mm polypropylene rope.

 

I am currently using a 3/8" (10 mm) AMSTEEL-BLUE (DYNEEMA) which weighs next to nothing (1.1 kg/20 m) and takes up no room. It has an average breaking strength of 8,900 kg, giving a SWL of 1.780 kg (safety factor 5).

Edited May 24, 2014 by morten

[dexta]

I have the 20mm blue poly and I think it has a SWL of 5 ton. Have used with the tirfor tu16 with great success .winched a big beech to the bank of a moat no trouble. Like others have said no great disaster if you drop anything on it

[Old Mill Tree Care]

Here you go

 

Polypropylene Fiber Rope - Strength

 

Thanks. So 22mm polypropylene has a MBS of 46kn which is apparently 4.69 tons.

With a 5ton Tirfor I'd say that's fine.

[treequip]

Thanks. So 22mm polypropylene has a MBS of 46kn which is apparently 4.69 tons.

With a 5ton Tirfor I'd say that's fine.

 

It works for me and has done for a couple of decades.

 

I have used it to pull with tirfor, vehicle winch and vehicles up to tracked diggers.

 

If 4 ton wont pull it over its time for another plan.

[bob]

Thanks. So 22mm polypropylene has a MBS of 46kn which is apparently 4.69 tons.

With a 5ton Tirfor I'd say that's fine.

 

 

But 14mm double braid is stronger than that.

Just retired my 16mm double esterlon due to age and plan on using that for pulling trees

mbs 7.5 kn

Just also remember most winches are rated 1.6 ton lift and 2.4 pull

Obviously depends which so have a look in manual

[morten]

Thanks. So 22mm polypropylene has a MBS of 46kn which is apparently 4.69 tons.

With a 5ton Tirfor I'd say that's fine.

 

Only if you accept a safety factor of 1. But the industry practice is to use a safety factor of 5 for rigging

[treequip]

Well if using LOLER expired kit is OK to pull stuff over for Bob, I am willing to continue with my tried and tested.

[farmer rod]

Thanks. So 22mm polypropylene has a MBS of 46kn which is apparently 4.69 tons.

With a 5ton Tirfor I'd say that's fine.

 

I would caution that polyprop cant stand the heat, I bought a 50m polyprop for giving the odd leaner a helping hand, ended up using it for trying to dislodge a hung tree and it melted where I had wrapped it round the tractor, sort of wish I had spent more now.