Ratlines and Dynex?

[Joe Henderson]

Dear Brion,

Many thanks for stepping in.

I agree it is a non issue, we have completed many rigs and sets of running rigging using Spectra/Dyneema from many different manufacturers.

I have absolutely no problem with using the material.

I understand completely about the compression issue re. knots and the way that a Dyneema tension member will interact with the compression members in a structure like a yacht's mast.

I would have no hesitation in applying ratlines to any Dyneema shroud.

My query was directly to John Franta, (who, it must be said, seems to have a vast experience using this material in tension members.) and directly addressed his statement that "Dyneema hates compression" and that large bending raddii should be adopted.

I bow to John's superior knowledge, but, at the same time, I am not convinced that large and fairly unweildy deadeyes are absolutely neccesary in the ends of standing rigging made of Dyneema/Spectra.

Large aluminium plates with plenty of space may be needed if you are trying to cram a few turns of Dynex in as a lanyard, but I doubt that the same exagerated proportions are needed when going to a pin.

Regards,

Joe Henderson.