150mm Snatch Block Pulley

[Ent]

Hi All

I will leave the rant on how dangerous most 4x4 shops are with poor advice to later, but what I am after is a 150mm pulley diameter snatch block. The reason is simple. I have a genuine Tirfor winch that uses 11mm solid core cable. The official minimum diameter pulley is 150mm according to Tirfor.

Frankly, I do not play silly buggers with stuff that can kill people so that is what I am after. 4x4 Shops are typically ill informed and down right dangerous claiming 100mm diameter is ok, purely because that is all they sell.

Has anyone spotted one such animal in the retail environment. Tried local Tassie lifting supply place and got the typical Tasmanian customer service, if I can tell them the brand, and the Australian distributor, they might order it in at an unknown price, plus freight Welcome to Tasmanian customer service.

So does such a beast exist and where from. Yes I can try the endless ring every lifting company as their websites are terrible but rather hoping some other poor sod out in 4x4 owners land has done the hard yards.

Cheers

PS anyone seen one of these in the wild?

http://www.portablewinch.com/en/products/PCW5000.html

[Katana Chatty]

Can't remember the last time I saw a 150mm snatch block - I think you will only get one through a lifting supplies company.

Try this link:

http://www.nobles.com.au/Products/Blocks,-Swivels-Sheaves/Snatch-Blocks/NSB-Snatch-Blocks

Nobles have them up to 600mm diameter, but no office in Tasmania unfortunately. And it's not an open face block either - you would have to feed the wire rope through.

If I can help by getting one in Adelaide and shipping let me know.

[Ent]

Hi Katana Chatty

Thanks for that link. Brilliant to actually have access to full specifications

Even more research indicates that just the normal 11.5mm cable needs 125-150mm diameter sheave, and Tirfor is 207mm, as it uses a less flexible cable again. Your link has a few that cover that range nicely. Sent email, so standing by for bill shock. The threading is a pain but fair trade-off for something designed for the task.

Worthwhile noting using a sub sized diameter sheave (pulley wheel) and you can dramatically reduce the breaking strain of the cable. Once again our 4x4 specialist shops are relying on inbuilt cautious safety margins to cover up poor information. I would imagine a Tirfor cable used only a few times would rarely actually fail with a smaller diameter sheave, but then rarely dead is still dead. Also a lot of rip-offs of the Tirfor appear to use a flexible cable that might not stand up to the crush pressure a Tirfor cable is designed for year in year use.

Anyway, thanks again. Hopefully Noble will come through. Next step is spare shear pins for the Tirfor.

[Katana Chatty]

One of our staff used to work at Nobles, so it was my go-to for your sort of need.

As I said, PM me if I can help with pick up and shipping

[shawty950]

Some options

Side opening

4T

https://www.blackwoods.com.au/part/01086375/block-rope-wire-snatch-gunnebo-150mm-4t

8T

https://www.blackwoods.com.au/part/01086443/block-rope-wire-snatch-gunnebo-150mm-8t