Here you can see the obvious issue that arises from the use of vertical engines;

http://www.douglas-self.com/MUSEUM/LOCOLOCO/fictional/high%20boiler.jpg

http://www.douglas-self.com/MUSEUM/LOCOLOCO/fictional/fictional.htm


--- In [email protected], "Edward Loizeaux" <Loizeaux@...> wrote:
>
> > The consensus (in the absence of definite confirmation from Atlas) was
> that the two vertical motors were necessary for all the electronic package
> that the much larger three-rail market wanted.
> 
> > Jace Kahn
> 
>  
> 
> The space needed for electronics is part of the reason for vertical motors.
> The other part of the reason is that U-joints do not perform well on very
> sharp curves.  Apparently the locos do not run smoothly around sharp curves
> because of the sharp angles the U-joints must accommodate.  With motors
> mounted on the trucks, there are no U-joints and smoother operation around
> sharp curves is much better.  Or so I am told...
> 
>  
> 
> Cheers..Ed L.
> 
> www.sscale.org
>




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