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R44 5278

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About R44 5278

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  1. When Joe brought up the issue of Solid State Circuit problems in a train's computer, isn't that solidly referring to one train having problems picking up a range of voltages?
  2. Doesn't the "issue" pertain with one train at a time running through the flats? How is it that one train is sucking all the power in that section?
  3. Thanks for your time, but I need to do some calculations on my own for this topic.
  4. It's funny how you're contradicting what you said earlier.
  5. No I am not looking from a textbook's perspective; textbooks teach people how to memorize formulas. My emphasis is on the AC Induction Motors themselves in the fact that they can take any voltage (~~600v, higher or lower) to create a higher voltage for running the train. That's what doesn't make sense. Also, can you specify on percentage of voltage drop please? On the other hand, INDman tells me that the current is not constant. Correct me if I'm wrong, but I believe that there are no neutral sections for third rail lines. Now what happens when the train (even DC motored) enters the break and touches both the ConEd and LIPA-powered 3rd Rails? Doesn't the train "connect a circuit? How can the train run if current is not constant?" Finally, Joe is telling me is that the train's computer cannot constantly control how much voltage is induced, which subsequently halts the system to prevent overloads. How can I believe this when first off, you, INDman, and Joe were talking about 3 different issues (one of which is completely senseless)?
  6. To be honest I don't care what line has what fleet, I only wanted to emphasize some Physics behind this topic. Likewise, a person with common sense should be able to infer the facts.
  7. My concern is not of the fact that they made it to Rockaways, but rather of any "incidents" of "problems" along their way to the Rockaways. Since no solid proof exists, I am not convinced by people or even employees telling me that a problem exists.
  8. What do photos prove? I need videos from the interior of the train, which don't exist.
  9. I'm not expecting you to believe me and I do apologize if I sounded arrogant, but I'm just laying out my reasons. From what I've been taught, a Physicist is never compatible with a Politician; a Physicist uses different ways to find one truth, while a Politician uses one way to spread a bunch of lies. And yes, I am alluding the MTA Executives as "politicians" because they are keeping a lot of secrets. My bottom line is that no problem could've physically existed at the Rockaway Flats by what was stated.
  10. Amperage has nothing to do with the R160 computers. Amperage or Amperes is the measure of current in a circuit (600v 3rd Rail). In a circuit (even one with different output voltage sources), the current has to be constant in order for it to function.
  11. As I stated earlier, I am looking into this from an Electrical Engineer's point of view; the Physics you were giving me made absolutely no sense. May I ask, how do you go about fixing subway equipment? Do you go about using knowledge from what you understood through Math/Physics, or were you simply "plugging in formulas" by doing every step that your manager wanted you to commit to? What is irrelevant? Doesn't it make sense to you that the AC Motors used in these trains are Induction Motors over Synchronous Motors? From my understanding, induction (much in the way of a car's ignition system) is how the motors get 625v to run the train after drawing 600v from the third rail. I'm not trying to be rude here, but I know that people who works with railroad components should at least know that there is more than one type of AC Traction Motor.
  12. INDman, I am well aware of the fact that every company cannot give away its secrets or every part of their plans. But by the fact that someone told you about the R160s "dropping in Amperes" or what you stated above, convinces me that there were no problems to begin with. Whether or not these "problems" actually happen, I won't be convinced unless I see solid proof from an interior video of a R160 set going through the Rockaway Flats or someone as high-ranked as Professor Gene Sansone gives me the calculations. I'm not pointing out that anyone here is a liar, but the Physics simply doesn't make sense. And as you stated in another thread, "it's against the MTA policy for anything to make sense" for non-employees (more like non-executives).
  13. How is this possible if AC Motors have the ability to use induction (as these are Asynchronous Motors) to bring about a higher voltage from a lower voltage? Also by stating that the "Ampere" drops, weren't you trying to imply that the current is different just because the voltage output is different? How does this make sense by definition of Physics when in every circuit, the current is always constant? By that extent regardless of AC or DC motors, not even the SMEEs can work on the Rockaways either. Would you care to explain the Physics of this please?
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