Thanks your build is really well documented and you have gone through prototyping and load testing on a bench.
In my various diy attempts, I realized depending on the shape and angle of the release pin, results were very variable.
This was due to the torque on the pin under load, if high release then force and danger for the fingers was increased.
The QR "handle" needed to be very tight to hold the pin straight, which conflicted with leaving max clearance for the flagout line to slide.
When I dismantled an "old" cab mushroom release from 2011 I saw how well designed it was, although simple the space for depower tube, pin location etc was very neat.
So is your handle + QR body solving this in the sense that the position of the pin is very well defined in your design ?
Also could you comment on the carbon lever : carbon fiber is great to resist elongation, but how does it behave with very localized effort in the QR ?
Maybe other fiber like kevlar could be strong for this application ( more restant than carbon for localized mechanical constraint like compression or puncture )
The simple lever release is very appealing for its simplicity ( like a pelican hook ) and replacing the metal by some lighter material might be safer for the hands.
Some other people on this forum spotted that a brand markets a textile + composite lever snap shackle :
https://www.nodusfactory.com/fr/accueil ... it-m_t_d12
They don't mention the material for the lever, looks like plastic charged with fiber - it whistands high loads but not suited to a kite QR directly.
Thanks again for sharing your build