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Here the toggle clevis has been
spread out, probably to accept the toggle body while making
changes to the rigging, and was not properly closed. Even with a
pin that correctly matches chainplate and toggle hole, this causes
a situation known as "point loading," where the stress of
supporting the rig is concentrated at the point the angled pin is
resting on the edge of the hole. It's even worse if the pin is too
small in diameter, which increases the angle (and point loading)
even more. The tilted head of the pin in the background is an
indication that the pin is too small or deformation of the
chainplate or toggle hole itself has occurred.
Another problem here is due to the spreading of the clevis, the
pin is now too short - look closely and you'll see the round
cotter pin is being pulled into the hole. |
