[CBQ] Re: compatibility of engines

[William Barber <clipperw@gmail.com>]

Bill,

No, each unit will provide all of the horsepower that it can at a given 
throttle position. The combined horsepower of the locomotives will achieve a 
specific balanced speed given the train weight and any gradient. Horsepower 
equals speed. Tractive effort determines the amount of load that can be pulled. 
Some locomotive combinations work together better than others, but under most 
condition, they will all work together. An SD7 can't provide the same 
performance as an SD45 or an SD70ACe for that matter. They are generations 
apart. However, each can do the job that it was designed to do within it's 
performance characteristics. Some crews didn't like having GE locomotives mixed 
with EMD in the same consist because the loading characteristics of each model 
were different when starting a train. 

Bil Barber
Gravois Mills, MO

 
On Feb 16, 2014, at 7:16 PM, CBQ@yahoogroups.com wrote:

> Re: compatibility of engines
> Sun Feb 16, 2014 2:42 pm (PST) . Posted by:"Bill Scott" bobbinbill229And this 
> is exactly what my original question was all about. If the big unit is 
> delivering half of its power and the GP7 is delivering only half of its 
> power, aren't they going to create problems for each other, since they are 
> delivering different amounts of power? In effect, isn't the GP7 going to slow 
> down the traain?
> 
> Bill Scott