Triangulated stays, funky mounting

Another remark about the design discussed earlier in this post:
Mainly, I just want to record the treatment of the stay attachment. The stays are riveted into two straps, made of 1/16" 6061-T6:
A third component, made of the same material, acts as a brace in between the stays and is riveted to the back of the bike structure to cleanly transmit side-to-side forces: