[PRCo] Re: I was in USA!

Boris Cefer boris6 at volny.cz
Mon Aug 2 15:04:34 EDT 2004


Jim Holland wrote:
With 67% shunting on the 1700s as you mentioned above, what would the 
balancing speed be for the 17s?       Is this All the 17s or just the 
interurbans?
----

>From a wiring diagram that I very expensively got some year back I know that ALL Westinghouse 1700s (= 1700 through 1774) had field shunting resistors, in addition to an inductive shunt. It was possible to short circuit two sections of each resistor to change the field shunting from 50 % to 67 %. Whether this was practically used, I don't know. Would be helpful if I could see 1711 from the bottom (if that feature is presently used!). In one of several instruction books I found a note reading that 1601 series and 1700 series PCCs had balancing speed of 42 mph with 67 % field shunting, and that earlier cars should have lower balancing speed, about 39 mph. I could not check any American PCCs for their balancing speed, except 1711, thus I can't provide any conclusion. And I have no idea how it was with GE equipped 1600 and 1700 series PCCs, whether they had deep field shunting or didn't. I have only a 1600 series GE book and it doesn't give any detailed description of field shunting (%).

Boris



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