Originally Posted by
dsr70
Reply from Sterling regarding the C-IV's polypro core melting...
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Doug,
Here is some additional information from our rope engineer, Jim Ewing.
We don't have any, more technical, information than what you've already provided. I can add, however, that in order for a hot rappel device to cause damage to the polypropylene core the device would have to remain in contact with the specific spot for several seconds all while maintaining the melting point temperature. In other words, there has to be focused heat and pressure in order to heat up the Technora sheath to the point where it will reach a sufficient temperature to affect the core.
Basically, you would have to try pretty hard to heat the rope up to the point where it effected the core.