Edit post

Edit your reply below.

Post Body
Enter your post below.
[quote user="Murphy Siding"]      What's the difference between a coupler and a nuckle? <div style="clear:both;"></div> [/quote] The knuckle is the pivoting part of the coupler.  It is the jaw that clasps the jaw of the mating coupler.  The knuckle is what opens to un-couple the coulper, and closes to make a coupling.  Either the knuckle alone can break, or a part of the rest of the coupler body can break, thus releasing the knuckle.  The shank of the coupler can break, allowing the coupler head and its knuckle to separate from the portion of the shank still connected to the draft gear.  Or the whole coupler can pull out of the draft gear to which it connects.  The draft gear can break.  The draft gear is part of the car center sill.  The center sill can break, and pull the car in two.  The most common pull-in-two breakage is the knuckle.  If the break involves more of the coupler (besides the knuckle) or involves the draft gear, it cannot be repaired by the train crew.
Tags (Optional)
Tags are keywords that get attached to your post. They are used to categorize your submission and make it easier to search for. To add tags to your post type a tag into the box below and click the "Add Tag" button.
Add Tag