Unless using a hybrid crampon the weight loss is not significant over a bar. That said, I would not use the dyneema cord system. IMHO I think as a cord it is too susceptible to being cut.
FWIW I am currently using a Blue Ice Harfang crampons which use dyneema tape.
Pretty sure @shorthguysbetaworks on YouTube did something similar to make crampons for his kids. He has a video about it.
K Go
·
Jun 30, 2023
·
Seattle, WA
· Joined Oct 2017
· Points: 142
I got a replacement cord from petzl and put a Lynx front section on a petzl aluminum heel section once. Kind of a silly combination for true ice climbing, but the idea holds water for a long technical route with a full carry over like the Kautz on Rainier, as long as the rock bands are short.
That said, it's finicky and the cord stretches / knot cinches down so sizing takes a couple tries and then you basically can't disassemble it without cutting the cord.
I just got some harfang hybrids for my ski boots and now looking at the harfang alpine hybrid which is basically what you are asking about (actual 12 pt steel front section), but not hacked together. The petzl heel piece was designed to work with a rigid center bar and can rock/tilt with a soft center bar. Blue ice design is more stable for that hybrid style IMO, but they designed the platform to only use a flexible link.