hauling with dynamic rope - data please

Hi,
does anyone have data of the relative performance of dynamic and static rope for hauling? I understand about the advantages of static being harder wearing and dynamic offering the potential for a spare lead line or some bounce if the haul bags get dropped. This is a question just about whether the often stated assumption that static lines make it easier to haul a load is actually true, and if so, what the numbers are.
Thanks.

David Coley wrote:Hi, does anyone have data of the relative performance of dynamic and static rope for hauling? I understand about the advantages of static being harder wearing and dynamic offering the potential for a spare lead line or some bounce if the haul bags get dropped. This is a question just about whether the often stated assumption that static lines make it easier to haul a load is actually true, and if so, what the numbers are. Thanks.

No idea on the numbers, but without a doubt I can feel that static is easier to haul on. The physical efficiency of the pulley will be largely unchanged, but having the rope stretch and you're trying to move a load means less force transferred to moving the load and more to absorbing the force you create. This is less of an issue on space hauling and more of an issue on body hauling.

Thanks,
I get the general principles. I'm after some numbers of the form 50kg with a dynamic feels like 40kg on static.

The numbers are, 3.5, 4.2 and 7.8 respectively.

Kevin Mokracek wrote:The numbers are, 3.5, 4.2 and 7.8 respectively.

Note sure where you got those numbers? Waaaaay off!? Do you even haul?

I haul a$$