LC1 and 2

[NW Mailing List]

Mike,

I have not seen any reply to your question, so I apologize if I have 
overlooked such.

The N&W LC1 unit had a traction motor between each pair of driving 
wheelsets resulting in a driving wheel base for each unit of 31 feet.  
By contrast, the Y6 steam loco had a rigid wheel base for each engine 
that was only 15 feet, 9 inches.  Obviously if the LC1's 31-foot driving 
wheel base were rigid it would never have operated on N&W's curves, so 
each pair of driving wheels and associated motor had to be in a swivel 
truck.

By contrast, the N&W LC2 and VGN EL3A locomotives were designed with the 
traction motors outboard of each pair of driving wheelsets resulting in 
a 16-foot rigid wheel base for each unit, about that of the Y6.   The 
elimination of the swivel trucks eliminated a lot of wear and maintenance.

I hope that this helps.

Gordon Hamilton

On 10/22/2023 7:12 AM, NW Mailing List via NW-Mailing-List wrote:
> The LC 1 had trucks that articulated like a modern diesel locomotive. 
> Correct?
>
> Did the LC 2 have “rigid” drivers that were driven from each end like 
> duplex steam?  I see that the center two drivers aren’t connected to 
> each other. Am I correct that the LC 2 was not articulated?
>
> If I’m correct, why did they change designs?
>
> Grateful for your responses.
>
> Mike Shockley
>
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