[PRCo] Re: Pgh Railways Street Car Operators Wanted Ad

[Phillip Clark Campbell]

I wrote to Mr.Holland in San Francisco as he drives trolley
coaches;  his reply is below.
 Phil


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----- Forwarded Message ----
From: "-> PRCo-- Holland James B. <-" <PRCoPCC at P-R-Co.com>
To: Phillip Clark Campbell <pcc_sr at yahoo.com>
Sent: Sun, October 25, 2009 6:22:39 PM
Subject: Re: Pgh Railways Street Car Operators Wanted Ad

 Hi Phil;


Several people sent me a copy of this email;
guess they know this is
an area of special interest.

This is the first I heard of this.       San Francisco used
27-pounds
in OB days on the Flyer trolley coaches;
slightly less with the new
Kiepe poles.       Upward pressure
is the same regardless of roaming
capability.
TrolleyPoles on TrolleyCars also  'roamed'  when in
sharp
radii turns;  the back end of the  TrolleyCar  swung toward
the
outside of the curve leaving the TrolleyPole to  'appear'
as though it
had swung in the opposite direction.       The
TrolleyPole on a
TrolleyCar on a 35-50-foot radius turn,
quite common on PRCo,  would
appear to be 14-feet from the
center of the car as well~!!!!!!!      
Nothing in the literature says
72-pounds;  for shoes the maximum has
always been
30-pounds,  TrolleyCar  or  trolley coach.



Jim




Phillip Clark Campbell wrote:


> 
>Mr.Holland;
>
>>Is this correct - double pressure on trolley coach poles?
>
>Phil 
>
________________________________

>________________________________
 
>----- Forwarded Message ----
>From: TEP <tompark at telus.net>
>To: pittsburgh-railways at dementia.org
>Sent: Sun, October 25,
>2009 11:48:33 AM
>Subject: [PRCo] Re:
>Pgh Railways Street Car Operators Wanted Ad
>
>
>>No typo. The carbon shoes on a trolleybus require slightly more than
>twice  the upward spring force of a streetcar trolley pole, nominally
>72 lb each.  They have to stay on even when off-centre -- the maximum
>roam is 14 ft.
>
>>The operator is instructed to only handle one pole at a time but this
>is often breeched meaning grabbing both ropes at once -- and the 140 lb
>uplift requires at least that body weight according to my physics. 
>
>
>>Tom P.
>>-----------