Bowser 55 Ton Fishbelly Hopper

[NW Mailing List]

I recall that the H-9s had unsnubbed trucks, which made them "bouncy."  
I also recall hearing Engineer of Tests Bob Pilcher tell of a derailment 
caused by an H-9 that bounced off the rails at a highway grade crossing 
where the road bed under the track just short of the crossing was 
somewhat softer than the support of the track in the crossing, and the 
weight of the loaded car deflected the track downward at the soft spot 
creating a bump upward when the car entered the crossing.   The springs 
in the unsnubbed H-9 trucks would have been compressed on the bump more 
than those in a snubbed truck and would consequently have had more 
rebound, which apparently was enough to derail it.

Gordon Hamilton

On 11/9/2018 2:58 PM, NW Mailing List via NW-Mailing-List wrote:
>
>
>
> If you're modeling N&W 1973 and after, be sure you
> comply with Norfolk Div. Timetable #5 (eff. 11/11/1973)
> speed restrictions.  4 (i) reads "Trains handling *LOADED*
> 50 - ton hoppers in series given below must not exceed
> a speed of 25 miles per hour:
> N&W 58500 - 65814
>          72500 - 73999
>          79500 - 83999
>          87500 - 87907
>        111000 -114099
>        263650 - 264399
>
> Such cars must not be forwarded in through trains for
> movement of which will hereby be restricted without
> permission of the Division Superintendent. "
>
> Loaded H-9s had a tendency to "rock and roll".  It was
> a practice to store the H-9's until coal loadings soared.
> Harry Bundy
>
>
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