Rethreaded Alpine Butterfly Knot
The re-threaded Alpine Butterfly knot is a very useful in-line, low-gain knot for direct tie-ins to closed objects.
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Richard Delaney
Richard Delaney has worked professionally with ropes since 1992 as a multi-pitch rock-climbing instructor, technical rescue instructor and rope access technician. Understanding and teaching the Physics of Rigging is a core passion of Richard’s, one based on his experience, and his prior professional life as a qualified engineer.
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Hello Richard , Have you performed any testing on a standard alpine butterfly versus an alpine butterfly with an additional turn in the centre of the two strands, the loop/bight goes back through the centre of the knot to increase the radius of the centre – to give added strength due to larger bends and make the alpine easier to untie I hope my description is sufficent
Hi Darrin,
I have not tested this.
Sounds like an interesting variation on the AB.
I’m not set up to do knot tests easily and the tests I have done I have found significant variation with rope brand, type, condition, etc.
Richard
Richard
Maybe we could slip this test in on this alpine butterfly during the workshop at High Point with Rob in March as a sideline ?
Darrin