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Old 04-30-2013
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Re: Jackline system

* The Tybloc will reduce the line strength to about 2000 pounds, based on the testing I've seen. Probably OK for a short tether, but too low for a tight jackline.
Sail Delmarva: Sample Calculations for Jackline Stress and Energy Absorption

* Seems too fiddly to use in rough conditions. I would favor short tethers (3 feet) and conventional jacklines, even on a 27-foot boat. The adjustable tethers I might like. I use dual length (3'/6') tethers and they suit my boat fine, but I would go shorter on a smaller boat, perhaps 2'/4'.

* Look at the Kong Tango. Tango Carabiner : Rock Climbing Gear : Rockclimbing.com. I've been using these for a while. Fast.

I've used Tyblocs climbing (hauling and to prevent slack from sliding back when simulclimbing), but they really aren't meant to take fall impact. No accender is.
__________________
(when asked how he reached the starting holds on a difficult rock climbing problem that clearly favored taller climbers - he was perhaps 5'5")

"Well, I just climb up to them."

by Joe Brown, English rock climber




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