[PRCo] Re: One For Mark:::::::

[Jim Holland]

1601s were good for this at low speed  --  many stores from Ops on how 
they seated drunks using this.     Ops referred to this as the Governor 
which is where I learned the term  --  fact is, it is Not a Governor but 
acts in similar fashion!!!




Boris Cefer wrote:

>
> This is caused by an incorrect limit relay setting - switching current 
> set less than 220 A. The accelerator does not advance and when you 
> release power pedal, it is still "down" on fingers 1-2-3 with no 
> resistance in the dynamic brake circuit.
> There is also something special.
> If the car goes reversed without throwing the reverser (e.g. backing 
> on a hill), the remanent magnetism in motors develops reversed current 
> through limit relay main coils. This is confusing to the limit relay 
> and it "thinks" that it receives too a low current and it pushes the 
> accelerator rollers "down" instead of "up" and the low resistance in 
> the dynamic brake circuit causes plugging.
>
> B
>
> ----- Original Message -----
> From: "Jim Holland" <PRCoPCC at P-R-Co.com>
> To: "- 1714 PRCo__WP__JTC -" <pittsburgh-railways at lists.dementia.org>
> Sent: Saturday, October 27, 2007 10:33 PM
> Subject: [PRCo] One For Mark:::::::
>
>
> PCCs have a tendency to slug if just a little power pedal is used and 
> released (accelerator resetting for braking -- not so bad on 
> All-Electrics like PRCo 1700s and Muni Baby Tens, but earlier 
> All-Electrics like Muni Torps and ex-SLPS 1101s and Many // Most 
> Air-Electrics were heavy sluggers with just minimal power pedal and 
> release) and this could cause the car to stop with the trolley on the 
> contactor(!) ---- so it is best to Go Deep on the Power for an 
> Instant, Back off and Coast, and you will get across the contactor 
> just fine.
> .
> *Absolutely__Formidable* the first time you try it but after that it 
> is purely second nature~!~!~!
> .
> Try It -- You'll Like It~!~!~!~
> .
> .
> .
> ^~^~^~^~^~^~^~^~^~^
> .
> Jim Holland
>