[PRCo] Re: Pittsburgh Railways M-25 truck

[Fred Schneider]

Print this one instead.  I took the two series typos out of it.

Fred Schneider wrote:

> I copied the following information when I was filing drawings in the
> library at PTM.  Thought someone out there might have an interest.  The
> tabulation shows which cars in the Pittsburgh fleet used the M-25 arch
> bar truck and what those cars weighed.  There are discrepancies and I'm
> not making any attempt to explain them.
>
> 3750s    45,000 lbs.
> 4200s    40,000 lbs.
> 4250s    40,000 lbs.
> 4300s    40,000 lbs.
> 4350s    41,000 lbs.
> 4400s    40,000 lbs.  (I take this to be the ex BVT cars)
> 4700s    38,000 lbs.
> 4800s    39,000 lbs.
> 4900s    39,000 lbs.
> 5000s    43,200, 41,200 or 40,000 lbs.
> 5100s    40,500 lbs.
> 5200s    40,500 or 40,000 lbs.
> 5400s    40,000 lbs.
> 5500s    40,000 lbs.
> B300s    28,000 lbs.
>
> I'm hesitant to believe any MU car could be only 500 lbs. heavier than a
> 5400 or 5500.  I also have trouble believing the 3750s are so different
> in weight from the 5000s but maybe so ... cross seats have to weigh more
> than a cushion on a wooden longitudinal frame and they did have dry
> hoppers when new.
>
> Furthermore, these weights are only approximations.  If you actually
> scale 100 cars in one series, probably no two of them will have the same
> weight.  Simply repainting a car can increase its weight by the weight
> of the pigment ... a not insignificant amount.
>
> At any rate, anyone who wants can print and file.