Descenders

[Ian Clarke]

hello i am new to arb stuff but i am an outdoor instructor and read with intrest the thread. i looked on a company called rock and run who have a lot of kit from a lot of companies and noticed the TRANGO CINCH

 

Trango Cinch

 

have a look i dont know how any descender works with so much rope under yourself. 3 suggestions on the figure of 8 side of things

 

a cardiac arrester i think from dmm

 

DMM Cardiac Arrester

 

or the dmm anka

 

DMM Anka

 

or the petzl pirana

 

Petzl - Pirana Canyon - Outdoor Equipment and Clothing for Backpacking, Hiking, Trekking, Hill Walking and all other types of Leisure and Adventure Travel

 

all of these last 3 devices and a modification on the figure of 8 but still share the basic prinicpal

 

please note with the pitana there is a karabiner made by petzl specifcally for the pirana.

 

yours ian c

[DrewB]

I'm a big fan of the trango cinch too but we wore through these too, again the alloy is just to soft- if they made one in stainless steel it would work quite well, but we also managed to wear through the stainless wear point inside the cinch. Like you said, I don't think anything will work well due to th nature of the task.the fig 8 twisted too much also

[Mark Bolam]

Can't help you buddy I'm afraid, but just out of interest how much would that amount of rope weigh in at?

[DrewB]

Can't help you buddy I'm afraid, but just out of interest how much would that amount of rope weigh in at?

 

I think about 50kgs when hanging straight plus friction once it's touching the rock, so not overly massive amounts of weight

[combined tree services]

have you tried either the petzle Rig or Tuba or id ? i know the tuba will require a shunt or similar but from what i know of it , it gives the greatest area to discipate heat and you can insert a cool bag inside it , not sure how well it would stand up on a 500m descent tho

[Peter]

Small stainless steel portawrap?

[Pete Mctree]

Small stainless steel portawrap?

 

good idea Pete. If you backed it up with a friction hitch below the device it would be very usable. Takes all the strain off your arms tending the rope into the device & managing the back-up. Same would apply if you used a fig 8 or similar device.

[combined tree services]

Small stainless steel portawrap?

 

basicly a petzle Tuba guys , have a look - actually looks like it would also be great for lightweight lowering maybe

[Peter]

good idea Pete. If you backed it up with a friction hitch below the device it would be very usable. Takes all the strain off your arms tending the rope into the device & managing the back-up. Same would apply if you used a fig 8 or similar device.

 

No need, seperate safety line is already part of the system, so total redundancy is built in.

[Peter]

basicly a petzle Tuba guys , have a look - actually looks like it would also be great for lightweight lowering maybe

 

That is designed specifically for passing knots through, and costs £200. Stainless porty costs $109 from Sherrill, bearing in mind it will be destroyed by the end of the trip, I think its a better choice.