Can't we PLEASE get some one to test some 9mm Dux on thimbles and pins of different radii and profile?
This is not an academic question for me. When rerigging my F31 TRI with 9mm dux forestay and cap shrouds, I did not want to use the full 8/1thimbles at the jesus shackle, because of potential mast chafe. I had some custom thimbles made which were a bit wider (to allow more flattening) at a 5/1 radius. (Thank you Luke Burritt at Yachtfitters in Seattle). I stared at that Dux graph a bunch.
I gotta say that the Dux graph looks way too smooth, and is presented with way too little technical background, to be very reassuring.
(B.A. in History, Real Estate Attorney, with absolutely no engineering background at all, and never really got the hang of algebra.)