[PRCo] Re: PCC Control

[Fred Schneider]

BUT IT CAUSED THE SAME PROBLEMS ON SUNDAY AND ALL DAY MONDAY.

On May 15, 2007, at 3:29 PM, Herb Brannon wrote:

> If you recall, after the car had been run for a couple hours the  
> hard braking stopped. This was how some of the all-electrics acted.  
> After they were put through their paces for a while, all the moving  
> parts would be warmed-up and running smoothly.
>
> Herb Brannon
>
>
> ----- Original Message ----
> From: Fred Schneider <fwschneider at comcast.net>
> To: pittsburgh-railways at dementia.org
> Cc: Orient Bernie <bernieo22 at verizon.net>
> Sent: Tuesday, May 15, 2007 11:22:28 AM
> Subject: [PRCo] PCC Control
>
>
> Boris:
>
> You bees the expert on this ...
>
> When I was running 1711 this weekend, I was bothered by an inability
> to get the put my foot on the brake pedal lightly enough at almost
> any speed to keep the dynamic brakes from coming on with a real
> jolt.    It was especially rough at low speeds.   I know it isn't a
> characteristic of all PCCs because I've never had the problem with
> Baltimore Transit 7407; that car is much smoother.   Herb Brannon
> commented that some PAT cars were that way and some were not, so it
> must be either an adjustment or set up issue with the master
> controller or a failure.   Are field shunts supposed to come in very
> briefly in braking to cushion the initial application and then drop  
> out?
>
> Fred
>
>