[PRCo] Re: Pittsburgh car trucks

[Schneider Fred]

I looked at that too and questioned it.   I wondered if the toilet  
and the extra partitions weighed more than the seats they replaced?    
The larger pinion gears and smaller bull gears would probably be  
offsetting so that probably doesn't matter..   We've also added field  
weakening coils and contactors but I too have trouble believing that  
all the minor modifications added up up 4500 pounds.

My suspicion is that the discrepancy isn't really 4500 but closer to  
1800.

Notice, Ed, that the weights of the 5000s, the 5100s and the 5200s  
are inconsistent and all four groups of cars (including the 3750s)  
were multiple unit cars with the identical control package and couplers.

The 5400s and 5500s came with K control and should have weighed about  
the same.   The 4800-4939 group were designed to tow trailers and had  
K-43 control and the couplers were different.    The 4700s were  
single door cars with Jones control.   I suspect that even though the  
list was updated to 1937, the cars were never put on a scale after  
the 4700s and 4800s had new front doors added.

On Jul 13, 2009, at 8:50 AM, Edward H. Lybarger wrote:

> What no one has been able to successfully explain to me is why the  
> 3750s are
> listed as being 5000 pounds heavier as essentially identical low  
> floor cars
> in other series.  We encountered this discrepancy when we were  
> looking at
> things for 4398 a few years ago.
>
> I do not believe that there was that much difference in the weights.
>
> -----Original Message-----
> From: pittsburgh-railways-bounce at lists.dementia.org
> [mailto:pittsburgh-railways-bounce at lists.dementia.org] On Behalf Of
> Schneider Fred
> Sent: Sunday, July 12, 2009 10:16 PM
> To: pittsburgh-railways at dementia.org
> Subject: [PRCo] Pittsburgh car trucks
>
> Do not know if I ever put this on line before ... might be useful  
> to some of
> you.
> Comes from a Pittsburgh Railways drawing created in 1926 and  
> revised in
> 1935.
>
> Shows car series numbers, trucks, and car weights:
>
> Purfesseur Fred
>
> SERIES    TRUCK                 CAR WEIGHT
>
> 3100         Bemis                        48,000
>
> 3400         Bemis                        50,000
>
> 3500         St. Louis                    58,000
>
> 3600         Baldwin                      71,900
>
> 3700         M-26     27" dia.         49,000
>
> 3750         M-25                          45,000
>
> 3800         M-27                          49,500
>
> 4000         Brill 49-E-2                 48,000
>
> 4100         Standard CP-50         48,000
>
> 4200         M-25                          40,000
>
> 4250         M-25                          40,000
>
> 4300         M-25                          40,000
>
> 4350         M-25                          41,000
>
> 4400         M-25                          40,000
>
> 4700         M-25                          38,000
>
> 48-4900    M-25                          39,000
>
> 5000         M-25                          43,200
>
> 5100         M-25                          40,500
>
> 5200         M-25                          40,500
>
> 5400        M-25                           40,000
>
> 5500        M-25                           40,000
>
> B200        M-25                           28,000
>
>
>
>