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Drawbars.

To: BRHSlist@yahoogroups.com
Subject: Drawbars.
From: "qrailroadman" <karl5631@a...>
Date: Thu, 20 Mar 2003 01:10:02 -0000
User-agent: eGroups-EW/0.82
Pete got the definitions right and Jan selected the correct "medium".

I uploaded a couple a pics of busted drawbars to the "Photos" section.

No. 1 is the typical manner of failure of the rotary drawbars on coal 
equipment. The "old break" is that part of the shank that displays 
discoloration and a noticeable difference in texture. In the case of 
no. 1 it's right hand half of the shank.

No. 2 is also typical of rotary drawbar shank failures. The piece 
missing in this picture is the "Mystery Part" mentioned in another 
shot. The "mystery part" was once an integeral part of the shank and 
was responsible for holding the drawbar in the car. Its failure, 
over time, ultimately led to the failure of the shank under a period 
of high stress. In the picture showing MP 122 the period of high 
stress occured as the train was ascending the 1%+ grade just out of 
Pueblo, CO. 

While these are late vintage drawbars the failures are representative 
of the failures of countless thousands of drawbars in years gone by. 
Just ask Max Wissel.

Hey, anybody out there remember "Bullchain" ??

Karl






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