RE: (erielack) questions about Erie steam locomotives

["Michael Dye" <luxpan_@_hotmail.com>]

Schuyler,

Thanks for the more in depth explanation.

Still, however technically incorrect my terminology might have been. In the 
Huntington, IN roundhouse (According to my paternal greatgrandfather's 
stories, passed down) the wheels ahead of the drivers are the leading truck 
and the ones behind the drivers are the trailing truck, no matter what the 
builder called it. After all, Lima, Alco & Baldwin (EMD, FM & GE) only built 
it. It was the 'Erie Men', who made it live.

The 'assembled' comes from the S2-S4 trucks being completely built-up 
(bolted, riveted, whatever), while the main assembly of the S1's was one 
cast piece.

Never realized the difference in the drawbar arrangement... Learn something 
new, every day.

Michael Dye, ELHS #1516


>From: "Schuyler Larrabee" <schuyler.larrabee_@_verizon.net>

>By "assembled trailing truck, Mike, you are referring to the "Articulated 
>Rear End."  This was a
>patented (by Lima, I think) arrangement where the drawbar was actually 
>attached to the trailing
>truck, not to the frame.  S1's had a "normal" attachment of drawbar to 
>frame.  The alleged advantage
>of the "ARE" was twofold:  The line of forces from the drivers back to the 
>tender drawbar was
>straighter, therefore less lost to flexing of the frame, and so on, and 
>also it held the trailing
>truck down hard on the rails.  The trailing truck, remember, had a booster 
>engine in it, so more
>force down on the rails meant more TF delivered to the rear of the tender.  
>It also caused just as
>much problem backing up as it does with the Oriental S3 model - it makes 
>the trailing truck derail.
>
>SGL



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