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Posted by
JournalSquare-K-Car
on Tue Aug 5 22:16:23 2008, in response to Re: What is the mechanical condition of the Low V?, posted by Fulton Frank on Tue Aug 5 21:48:53 2008.
edf40wrjww2msgDetail:detailStr fiogf49gjkf0d I am pretty much in the same situation like you. I would also like to know if there is a book about the subway car mechanics. They have books about car mechanics, so they should have good subway car mechanic books too.
However, here is an animation of how propulsion works..the basic stuff, first posted by selkirk, from http://www.thejoekorner.com/cars/index.shtm
I will try to explain...the cam is essentially the part which moves through the resistor settings, and cuts out resistance accordingly. One type of group box has to do with how the motors, or trucks are wired. That is where the terms "series", and "parallel" come from. The group box controls the grouping of the motors, or trucks. On newer trains, with two powered trucks, the trucks are the ones who are set into parallel. In older railcars with one powered truck, like arnines, the grouping was controlled on the basis of each traction motor.
The funny thing is that the arnines have 1.75 MPH/S acceleration(pretty good)...WITH ONLY ONE POWERED TRUCK. And i saw them outaccelerate a hippo...now imagine if they ade a super arnine with two powered trucks...you could have a train with 3.5 MPH/S acceleration!!!
Here is the original post, it has a MASSIVE brake system diagram, which is more complex than the propulsion one, but after a while, you kind of get it...
http://www.subchat.com/read.asp?Id=606919>
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