by electricron
mtuandrew wrote:Yes, all true. Specifics are different, but the way a subway car is built is basically the same way an intercity car is built. Golly, most of these additional parts are made by third party vendors? Does Siemens manufacture the safety glass used on their railcars, or does a third party vendor do it?electricron wrote:When you get down to it, besides size, there aren’t that many differences between a subway and intercity rail car.I wouldn’t hang my hat on that statement, Ron.
-different physical sizes, even the largest WMATA and BART cars are significantly smaller than a mainline car
-different crush strength and crash standards
-different door placement
-different trucks, often with different gauges and definitely with different spring and pad arrangements
-different signal & control equipment
-different electrical needs and supply
-different interiors, from footrest to luggage rack
-different HVAC needs
-different lighting needs
-different sanitation needs
-different net weights
-different passenger loads and gross weights
-different materials
-different duty cycles and rated lifespan
-different speed ratings, including moments of inertia and allowable superelevation
-different wheel design and profile
-different braking systems
-different coupling systems
-different vestibule arrangement
That’s a very abbreviated list, but suffice to say you won’t see Amtrak running R146s to Spokane anytime soon.
They start with trucks or bogies, and body shells, build the deck or chassis, install both to it, add windows, chairs, controls, HVAC, lights, power, restrooms, holding tanks, water tanks, flooring, doors, traps, etc. Many of the individual regulations are the same, like safety glass, seating, ADA, lighting, and fire resistance, just to name a few.
Siemens, Stadler, Alstom, Bombardier, and most likely all the others, make subways and intercity cars, possibly even at the same factory.