No, it’s the Knut H, you are the only one calling it a Modified Catalan. There is no Catalan now as it was shown to be the same as the much earlier Arbsession. You claim the Knut H doesn’t resemble the Knut, but looks more like the Catalan, or Arbsession, now. Side by side below.
The hitch...
The Catalyon is to the Arbsession as the Michoacán is to the Petroacan. Naming a hitch something different, that has simply been rotated 180 degrees, seems to take credit away from the originator of the hitch.
Canyon Elite from Maxim stay flexible, and still has technora in the cover for heat and cut resistance. They claim it is 9mm, but it slightly larger than 10mm.
No, it only takes one and a half fids of bury of half the core, the other half gets tucked along the outside. Possibility a class I wouldn’t need even that much.
Aramids, Vectran and dyneema are being used on covers for more cut and heat resistance on smaller diameter ropes.
A more recent method is an inner cover of an aramid that doesn’t get tensioned when loaded. Mammut came up with, I think, for a dynamic rope.
The above is very similar to the Synergy X, someone has done the same with the Michoacán, called the WLR, and I’ve come up with a couple variations. I call them Series hitches, hard to equalize the eye length, tying a stopper in back is the easy way to go.
The Catalyon is a mirror image of an Arbsession Hitch, that’s been rotated 180 degrees. Tying an Arbsession and taking the eyes to the back will give the same results.
Extending the Arbsession’s lower section 2 or 3 more times creates enough friction for it to be used on a fixed rope alone...
Yes, that’s hollow braid, and it looks like the cover expands quite a bit.
This is diamond braid, nylon on the left, and dyneema on the right. I spliced the one on the right, 8.1mm Slyther from Imlay Ropes using a modified tuck-bury.
Did you run out of slack and couldn’t close the eye up. Those splices usually can easily be pulled back out if the tapering was off. If it didn’t close up, then the cover needed to be further down before starting tapering.