On 11 Dec 2006 09:57:20 -0800, "
wrote:

Does rigging the tackle like this give you a 6:1 purchase __as you
ascend__? I think it does, but have had trouble convincing the crowd
around here.

Sounds like 4:1 to me.

Just count the number of lines supporting the load, that is the
purchase ratio. The tail counts as 1 in this case.