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random q about ropes

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 Steve_westy 11 Oct 2019

Not sure if this is the right place to post and a bit random but does anyone know what percentage of a rope’s strength is in its core? 

Cheers 

 jezb1 11 Oct 2019
In reply to Steve_westy:

80% ish

 Steve_westy 11 Oct 2019
In reply to jezb1:

cheers, do you know where this figure comes from?

 Bryn_F 11 Oct 2019
In reply to Steve_westy:

Here's one source that corresponds with the above figure:

Page 10 http://tools.niehs.nih.gov/wetp/public/Course_download2.cfm?tranid=7327

 brianjcooper 11 Oct 2019
In reply to Steve_westy:

> Not sure if this is the right place to post and a bit random but does anyone know what percentage of a rope’s strength is in its core? 

> Cheers 

An interesting post Steve. An honest question: As some ropes now have a 'Unicore' construction, sheath and core bound together.  Does that make a difference to 'core' strength calculation? 

 HeMa 11 Oct 2019
In reply to brianjcooper:

Prolly not by much. 
 

the unicore is mostly to keep the rope more ’tight’ and have less/none shealt slippage. 

In reply to Bryn_F:

> Here's one source that corresponds with the above figure:

Sorry, but there are too many inaccuracies in that source to make it trustworthy.

Post edited at 19:48
 petegunn 11 Oct 2019
In reply to Steve_westy:

I wonder if the percentage might be different in ropes especially designed for indoor wall / centres, such as the Beal Wall Master. The outer is more hard wearing and thicker on these types of ropes.

 Bryn_F 12 Oct 2019
In reply to Stefan Jacobsen:

Mate, the person had a question about ropes - it was answered, some additional material was found to collaborate - as far as I'm aware he's not building a legal case or gathering material for an investigation - feel free to spend a moment of your time constructively and find a source that meets your high expectations 😂 

Post edited at 07:47
2
 Steve_westy 13 Oct 2019

Cheers for all the responses guys much appreciated.


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