Thanks Ryan for your great videos. I have several questions: (1) could this 4:1 be rigged using 2 single-sheave pulleys instead a double-sheave pulley at the anchor? (2) if so, could this modified 4:1 be converted to a 12:1 by attaching a single-sheave pulley the haul-strand with a prusik? and (3) if so, would it be useful to anchor this 3:1 subsystem to a more distant point? Thanks.
Are you referring to the red prusik cord? That would be for progress capture, attached to the rope coming in on the change of direction pulley. It allows you to capture your hauling progress.
1cleandude to use a double pulley without a becket, simply attach the bitter end or standing end of your rope to the carabiner holding the pulley to the anchor. Be mindful of the knot used to create the loop. If the loop is too short, the knot will force the pulley to the side and will cause friction points at the side plate. Adjust the loop to finish below the pulley to reduce this friction. Not ideal but without a becket it will work fine.
Can you please explain what you mean? Do you mean with the last change of direction for the haul line? The last change of direction is unnecessary most of the time, but then you would need to place your progress capture on another section of the rope. This set up ⬆️ have shown is more common for vertical scenarios like confined space rescue.
Great PLEASE SLOW DOWN
Learning all new terms here. Cool stuff
Thankyou bang buat belajar persiapan individual skill persiapan seleksi tim ifrc🫶🏼
Thanks Ryan for your great videos. I have several questions: (1) could this 4:1 be rigged using 2 single-sheave pulleys instead a double-sheave pulley at the anchor? (2) if so, could this modified 4:1 be converted to a 12:1 by attaching a single-sheave pulley the haul-strand with a prusik? and (3) if so, would it be useful to anchor this 3:1 subsystem to a more distant point? Thanks.
Yes, yes and yes
I really appreciate this mechanical advantage series you have put together great info. Who makes the pulleys you are using in these videos?
They are rock exotica omni blocks
what is the purpose of the prussik?
Jumonville basically a progress capture
What was that red piece for?
Are you referring to the red prusik cord? That would be for progress capture, attached to the rope coming in on the change of direction pulley. It allows you to capture your hauling progress.
I’m more confused now than before I watched the video.
Why?
He thought he liked women 😂
Audio needs improvement.
what do you do with the tag end line if you don't have a becket? Thanks
1cleandude to use a double pulley without a becket, simply attach the bitter end or standing end of your rope to the carabiner holding the pulley to the anchor. Be mindful of the knot used to create the loop. If the loop is too short, the knot will force the pulley to the side and will cause friction points at the side plate. Adjust the loop to finish below the pulley to reduce this friction. Not ideal but without a becket it will work fine.
Why is this demonstration rigged to disadvantage. Seems like a waste of energy.
Can you please explain what you mean? Do you mean with the last change of direction for the haul line? The last change of direction is unnecessary most of the time, but then you would need to place your progress capture on another section of the rope. This set up ⬆️ have shown is more common for vertical scenarios like confined space rescue.