KiteSurfingKen wrote:When looking at this image, it appears a heavy load may bind the lever arm and make it very difficult to action. ...
Very simple, the sand goes inside the box througt the many holes on the box and "locks" the leverage system because there are only few 1/10 of mm between the box and the lever.
The question is "how to avoid sand to go inside?" My aswer is "It's impossible"
Actually it looks like quite a good design as far as being able to deploy it
under heavy load. But I can see how it could very easily become a death-trap
if the area under the left end or above the right end of the lever becomes
packed with sand.
Not a perfect solution, but anyone using one could probably make it a little
safer (until they replace it) by cutting away the mating edges of the two
halves of the enclosure, on the left, under the lever (near where it says
"locking indicators" on KSK's photo) so that any sand packed in there can
be pushed out by the left end of the lever.
Of course that would open it up for even more sand to get in and foul
above the right end of the lever where it moves upward when pulled by the
deploying string. You could maybe reduce that risk by drilling a 3/8" - 1/2"
hole through the top half of the enclosure right above where the deployment
string goes through the bottom half of the enclosure. That way you can
visually confirm it is clear of sand above the right end of the lever and in
the area of the chicken loop interlock lever, and if not, you could maybe
wash the sand out through the hole.
Even without seeing one "in action" it is obvious that ingress of sand could
easily disable the release mechanism and when it is all closed up sand
would be difficult to detect and even more difficult to clean out effectively.
GK's solution, cited by bekite, that "...the kiter should always wash it
carefully" is simply not good enough.
My suggestion above is based on nothing but what I see in the pictures
posted here. It may not make this QR any safer and may even weaken
it to the point that the enclosure fails, but if I used one, and had no other
option, that is what I'd try until the inevitable (I hope) recall.
As it is I don't own one, and if I did I would have other options, so I would
stop using it immediately.