[PRCo] Re: Bent Pole

[Bill Robb]

Trolley poles get bent when cars dewire at high speed and the pole strikes any bracket arms in the poles path before the car comes to a stop.  I remember seeing a picture (perhaps in Trains) of a Niagara St. Catharines and Toronto interurban that dewired and bent the pole out of shape.
Bill


Here is a dumb guess!  The spring tension on trolley poles often causes the
poles to bow.  Could it be that this is simply bowing of the pole, it would
bow more in the center than toward the ends.  Or could it be weakened there
from so much bowing and appears to be starting to bend?

OR could the retriever yanked it down so hard a couple of times that it
bent?

OK Fred & Ed, take your shots, I'm only making guesses?????

Bob 


> ----- Original Message ----
> From: Ken and Tracie <ktjosephson at embarqmail.com>
> To: pittsburgh-railways at dementia.org
> Sent: Wednesday, March 25, 2009 9:18:38 PM
> Subject: [PRCo] Bent Pole
> 
> I have a couple dozen shots of Pittsburgh cars with bent poles.
> Here's a shot of car 1702 with one. I wonder what happened?
> Not likely to for an interurban using the Dormont wye.
> Perhaps back-poling in the shop or yards?
> K. 
> 
> 
http://lists.dementia.org/files/pittsburgh-railways/pat1702.jpg