Beginners guide to rigging.......

[Marc]

Ok question. I asked my instuctor if I could use a micro pulley (see pictures below) could take my weight as an anchor point (nb im note a fatty before you quip). He said no?

Ive been researching loads for my 41 assessment and from what I found drew up the below table. Rarely will a piece fall 9.81 so I erred on the side of caution and just used a multiplication factor of 10m/s.

So from what I gather I could lower max 1.5 ton on a micro pulley if static no free fall. I weigh less than a ton so surley I can use it as an anchor?

 

My calculation work out at 350kg as a safe working load to be using regularly. 1.5ton! Is very close to/at its breaking point even when top roped!

[Dan Curtis]

Ok question. I asked my instuctor if I could use a micro pulley (see pictures below) could take my weight as an anchor point (nb im note a fatty before you quip). He said no?

Ive been researching loads for my 41 assessment and from what I found drew up the below table. Rarely will a piece fall 9.81 so I erred on the side of caution and just used a multiplication factor of 10m/s.

So from what I gather I could lower max 1.5 ton on a micro pulley if static no free fall. I weigh less than a ton so surley I can use it as an anchor?

 

How were you planning on attaching the pulley to the tree?

[Stihl Unknown]

Yeah my hand looks small bad angle lol. Attatch with sling and krab or prussik and krab maybe?

[Stihl Unknown]

Marc.. yeah I wouldn't lower off it and most likely hardly use it but just learning to gauge weights.

[Marc]

Marc.. yeah I wouldn't lower off it and most likely hardly use it but just learning to gauge weights.

 

I use that pulley as the occasional lowering pulley maybe when reducing over a greenhouse for example. I doubt I'd exceed 100kg at most in this situation so well within limits. Just concerned how you got the figure 1500kg that's breaking point!

[Stihl Unknown]

Thats crazy id only let it get to 1499

[Marc]

Thats crazy id only let it get to 1499

 

[Dan Curtis]

Attatch with sling and krab or prussik and krab maybe?

 

The krab part may have been his concern, especially in a training situation. Remote krabs aren't the best idea imo.

 

I had one mallioned onto a ring-ring cambium saver for a few years.

[Stihl Unknown]

Ah. Good point

[normandylumberjack]

What a great thread, but what has happened to it?

 

I would love to see some more info here and pictures aswell. Rich Rules pictures were good and clear and Rupe did some great video, more please:thumbup:

 

Also, as everyone says about the importance of a good groundie, some tips and videos of the friction device in action would, I feel, be of some use too.