by MCL1981
For systems like that, based on wheel rotations to determine distance, are there transponders somewhere along the way that to reset and calibrate it? Something must tell it "start counting now".
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MCL1981 wrote:For systems like that, based on wheel rotations to determine distance, are there transponders somewhere along the way that to reset and calibrate it? Something must tell it "start counting now".Normally, how it should work is that the program is selected at the terminal. Mileage is calculated from the terminal. If there is wheel-slide from hard braking, you may get wacky announcements, methinks lol.
realtype wrote:Sent an email through the MTA's website regarding the status of the MARC IV cab cars, here's the response I received:ACSES was/is the braking issue. there was no incompatible brake issue.
"In response to your inquiry concerning the new cab cars, we hope to have them in service by the end of September after they’ve had Positive Train Control installed on them."
So, it's PTC (presumably ACSES) equipment installation that had been holding up their introduction. I'm guessing the issue with incompatible braking systems has been resolved.
jetfan wrote:I was at the Timonium show a few weeks ago and spoke with someone from Bombardier with regards to the cab cars. Apparently, MARC changed a lot of the inner workings on the cab cars, so much so, that the FRA won't let them run the cars without be re-certified, as though they are completely new cars. This means sending them to Colorado. He also stated that MARC had stepped on the wrong toes at the FRA, making the situation worse. His opinion was that the cars won't run for a very long time, if ever. Please take this with a grain of salt as the person that I spoke with could have been anybody and could have been talking out his rear, just passing along what I heard, and it seems plausible.Anyone surprised by this? They were supposed to be in service 2 months ago.
MCL1981 wrote:Nope. I'm sure this is exactly what's been going on. I don't think MARC has ever accepted new equipment without very lengthy delays and drama (Kawasaki bilevels, Bombardier coaches, VRE Kawasakis, AEM-7 rebuilds, MP36 diesels...). These cars need to enter service eventually.jetfan wrote:I was at the Timonium show a few weeks ago and spoke with someone from Bombardier with regards to the cab cars. Apparently, MARC changed a lot of the inner workings on the cab cars, so much so, that the FRA won't let them run the cars without be re-certified, as though they are completely new cars. This means sending them to Colorado. He also stated that MARC had stepped on the wrong toes at the FRA, making the situation worse. His opinion was that the cars won't run for a very long time, if ever. Please take this with a grain of salt as the person that I spoke with could have been anybody and could have been talking out his rear, just passing along what I heard, and it seems plausible.Anyone surprised by this? They were supposed to be in service 2 months ago.
jackintosh11 wrote:I know that there are MARC IIs, but were there ever MARC Is?Yes. They were the rolling stock MARC inherited or leased from Conrail, B&O, or NJT. In other words, MARC didn't necessarily buy them. They were replaced or retired when MARC bought the MARC II coaches.
electricron wrote:Yep. I believe quite a few stuck around though until the MARC III (Kawasaki bilevels) purchase.jackintosh11 wrote:I know that there are MARC IIs, but were there ever MARC Is?Yes. They were the rolling stock MARC inherited or leased from Conrail, B&O, or NJT. In other words, MARC didn't necessarily buy them. They were replaced or retired when MARC bought the MARC II coaches.