Login
or
Register
Home
»
Trains Magazine
»
Forums
»
General Discussion
»
Amtrak train breaks apart at 125 mph
Edit post
Edit your reply below.
Post Body
Enter your post below.
<p>[quote user="Overmod"]The problem here is not so much a 'retaining bolt' as that the pin was pressed into the eye but subsequently moved far enough to strain the retaining bolt. [/quote]</p> <p>The retaining plate was the only safety measure for the pin not the belt added to the suspenders. Even with close clearances a greased pin will work itself out of the connection under dynamic loads and permanent vibrations. A d=3'' pin with 10'' length weighs about 22 lbs.</p> <p>I expect that the bolt holding the retaining plate failed from fatigue and both fell off leaving the pin unsecured. So a second bolt might prevented this as it is unlikely that both bolts fail simultanously if each bolt alone is able to hold the pin.</p> <p>[quote user="Overmod"]I don't know whether to laugh or cry that they pressed in a replacement pin with porta-power and then apparently tack-welded it to the drawbar eye. [/quote]</p> <p>I think the weld would be between lug plate and pin and not eyebar. But even if otherwise the cpin can move in lug plate. The function is not restricted and as temporary solution good enough.<br />Regard, Volker</p>
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
Update Reply
Join our Community!
Our community is
FREE
to join. To participate you must either login or register for an account.
Login »
Register »
Search the Community
Newsletter Sign-Up
By signing up you may also receive occasional reader surveys and special offers from Trains magazine.Please view our
privacy policy
More great sites from Kalmbach Media
Terms Of Use
|
Privacy Policy
|
Copyright Policy