Big pulley?

[Daniël Bos]

Good morning this morning:001_smile:

I'm building a shed with some quite big bits of wood, too big to lift by hand with less than ten people...

It's a circular building and I'll be placing a very sturdy telegraph pole in the centre for using as a rigging point, then using a tractor on the end of the rope I can hopefully do the lifting with a lot less people.

 

I have a 50m 25mm rope that'll do just fine but not a pulley to match it.

I've looked on every single page of the entire internet but even the big DMM blocks and the ISC big blocks and the like stop at 19/20mm...

 

I don't need it to be as strong as the rope (safe weight of 15T I believe) as the biggest bits of wood will only be 400 to 500 kg, and there should be no impact loads...

I'm on a budget so I'd be quite happy with an ebay "far east special brand" as the shear size of a 25mm block would surely mean a safe load of at least ten ton?

 

But I cannot find not none of them nowhere?

If needed I'd be happy to buy an expensive "proper one" to flog on again after the build is done.

 

Any suggestions?

[AlexB]

Ap lifting £16 if you google them you'll find them.

 

 

Sent from my iPhone using Arbtalk

[kevinjohnsonmbe]

Have you tried military surplus stores or crane / rigging suppliers? You might get something ex-navy / dockyard that'll do the job at a lot less than an arb block??

[bob]

Get a smaller rope

You could find it so much easier and the new ropes are also more than strong enough even down to 10mm

[DanM]

A 4x4 snatch block would be more than big enough, ive got a 12t one and could easily get a 25mm rope through it, they don't cost the earth either.

[urbandekay]

Use an old pulley as used on building sites for hauling stuff up or look at 4x4 winching supply sites

[Daniël Bos]

All good suggestions, thanks.

 

I've found one that seems to fit in my old sailing kit, but it has no markings at all for weight rating or such, it could be 140 years old though...

 

I've found one in a surplus store that's specced to take a 25mm rope but its only rated to 2t?

 

The 4x4 snatch blocks seem strong and cheap but I'd like to see how they'd do with the big rope as most seem to be made for wire rope of less than half the dia of my rope.

 

A thinner rope may well be much easier and not as expensive as I thought. I do like to overspec things though, and my 25mm rope has a MBS of over 15ton where most thinner ropes (was like looking at 12/14mm) are up to 6t I think?

So I'd prefer to use the big rope if I can.