[PRCo] Re: More Thoughts on 1600s versus 1700s

[Fred Schneider]

I went back to the equipment chart in the PCC book ... the easiest way to
determine blown motors is on GE cars because that apparatus supplier changed the
motor number.  Their 1198 motors were internally fan vented, while the 1220
weries were blown motors.  The first cars in Pittsburgh with GE 1220 motors were
1675-1699.  .  If you have the first edition of PCC From Coast to Coast, there
was a fold-out chart in the rear.  It did not appear in second edition (I think
Mac was trying to save money). The chart shows all the motor details.   The
Westinghouse blown motors were 1432E, and suffixes H, HE, HF, HG, HTE, J, JT, K,
L, LH, LK and LKX.  You'll find that the 1600 had 1432J, cars 1601-1975 had
1432HE and 1700-1775 had 1432K.  The HE design had a mounting for Clark
internal-expanding drum brakes (the air 1600s).   The J suffix allowed either
WABCO or Clark internal expanding drum brakes.  The 1432K was designed for
mounting of WABCO external contracting drum brakes.

How were the motors on the 1600s ventilated.  DamfIko.  (That is a three sylable
word created by the late Dick Lloyd, transportation superintendent of the
Baltimore Streetcar Museum.)   I apparently found evidence tht the 1600s had a
PC2 compressor,  which had to be driven off a pulley on the MG set.  This
suggests that the other end drove a single fan to cool both the resistors and
the motors, and to heat the car.  It might also suggest a much longer MG set
shaft that had two fans and the compressor pulleys.  One would be lead to
believe that, since it wasn't repeated, it may not have been satisfactory.   If
I cana ever remember, and if enough people remind me by the 20th of this month,
and if Tony DiSensi is working at Arden on the 22nd, I'll ask him what he
remembers.

Please note that all-electric cars do not require standee windows.  The St.
Louis 1500 series,  Illinois Terminal 450-457, and the postwar Kansas City cars
were all-electrics.  And I've never seen an air car in Europe.  Also, standee
windows do not mean always an all-electric (remember the Boston Picture Window
cars were air cars.)

If someone needs the fold out chart because they have a second edition ...
you'll need to pay me to have an architectural supply shop copy mine, and pay to
ship it.  One also needs to twist arm constantly until I some morning I wake up
and remember I need to do it.

Jim Holland wrote:

> Good Morning!
>
> > Fred Schneider wrote:
>
> > The cars with blown motors probably could be made
> > peppier than those with internally vented motors,
> > because the external fan on the MG set could keep the
> > motors cooler at lower speeds.  But I have never seen
> > any proof that specs for the limit relays were changed
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