Learning rigging

[AHPP]

13 hours ago, Dan Maynard said:

I think that could sound like a good idea unless you've done much running ropes. We don't want constant deceleration, we need to drop below the climber and then stop before the shed, or slow while it's swinging and drop on the ground in the right place.

 

On the other hand I guess something which is completely predictable could be good if you have a novice on the ropes, then as climber it's not ideal but you can plan around it because you know what'll happen.

 

No use for trees but worth asking the question.

[kram]

@AHPP Ok then. A claimed 20 tonne or 200kN MBS on the ring, gives a 200:1 safety factor for 100kg load.

The 16mm rope is rated somewhere around 40kN, half that for the knot, is 20:1 SF. However I might splice one of them in which case I can say 30:1.

 

As I said before, I wont be doing anything big, small stuff only until I have more experience, done cs41 and get better gear.

[AHPP]

This is great. You're thinking about it.

 

Have another look at the 16mm rope section of your deliberations. It has a minimum breaking strain of 40kN. How might you arrive at a working load limit or safe working load for it? Walk me through it like I know nothing.

 

And you were talking about a 100kg top. Remember that if you've got a 100kg load hanging on one side of a ring, you've also got 100kg the other side of the ring too, on your portawrap or whatever. So you're not putting 100kg on the ring and deadeye (and rigging point). You're putting 200kg on it. And that's only statically. It's more force if snatched (do you know how much more force potentially btw?). And that's on both sides of the ring still.

 

A 100kg top is a huge top btw. We can do the sum later. Get your ring and deadeye capacity worked out first.

Edited 4 hours ago by AHPP

[Joe Newton]

Does that ring have a CE mark or EN number on the other side?

[AHPP]

35 minutes ago, Joe Newton said:

CE mark

 

Since we're all learning gay compliance bullshit tonight:

 

 

Those cheeky Chinese chappies.

Edited 4 hours ago by AHPP

[Joe Newton]

13 minutes ago, AHPP said:

 

Since we're all learning gay compliance bullshit tonight:

 

 

Those cheeky Chinese chappies.

Gotta watch those industrious buggers