Tom Pierce wrote a question about Beal Cobra II Golden Dry Climbing Rope - 8.6mm on August 17, 2013
These are described here as twin ropes with a 5.1Kn impact force. But the ropes are marked as double ropes, not twins (I just received these from Backcountry), and on further investigation the 5.1Kn impact rating seems to be for use as double ropes, not twins. The impact force when used as twins appears to be higher. What light can you shed on this issue? I plan to use these as twins and don't want to do so if the impact force when used as twins isn't as advertised (I do a lot of adventure climbing on suspect rock). Please advise, many thanks.