Missing valuable rope in formation.

[Richard Mumford-yoyoman]

Manufacturers list a lot of great information about ropes characteristics. Strength, stretch, how well it ties and holds knots,construction and materials etc.
A big part of this game whether you are rigging or climbing is about friction, sometimes you want more, sometimes you want less. Ascenders and climbing devices respond very differently when it comes to friction.
Maybe it is available and I don't know it but wouldn't it be great if you knew the coefficient of friction against aluminum or steel or wood for the various ropes?

 

[surveyor]

I see some testing in your future : )
Even humidty seems to play a roll. Which of course is where a rope hitch can be infinitly adjustable. I have experimented with adjustment with mechanical devices with some success. Cast Iron has a high coefficient of friction, but perhaps not suitable for life support. My Dixon mower has a cast iron cone drive (metal on metal) that still works fine after 30+ years

 

[monkeylove]

It's amazing how just a little tweak here or there can stop you or send you down stream with smoking gloves.