Re: T construction news
Great news, guys! The new locos may already be as fucked up as the Rotem coaches:
http://www.railroad.net/forums/viewtopic.php?f=65&t=51137&start=1545#p1225137
Micromanaging is awesome!!! Moar T overcustomization plz!!!
A direct quote from the discussion linked above:
"Guys, all we have at this point in time is a rumor that someone overheard from someone else, so let's not be too quick to declare these units lemons or failures just yet.
If it's indeed true that the first few units are too heavy, we still have NO proof that it was any kind of error or wrongdoing on the part of the builder.
For one thing, GE is only a supplier of the diesel engine, traction motors, HEP, and computer, so they're probably off the hook. Those are all standard, off-the-shelf items that shouldn't have any surprises.
MPI, for all we know, may have simply been following directions. Who knows, it could have been a typo in the specs that were supplied to MPI by MBTA and/or you-know-who, depending on which one of them actually prepared the documents.
It could have been a mistake made by any one of the dozens of vendors who build the various custom-spec'd components used in the locomotive.
The trucks appear to be either a new or heavily modified design, so maybe they weigh more than was anticipated.
There are SO many possibilities here. We're talking about a huge machine with thousands of parts from dozens of vendors. If the only thing wrong with this all-new design is that the first few of them were a little heavy, that's actually pretty good! Much worse things have happened with new locomotives. This issue (assuming it's true) doesn't strike me as insurmountable... unless we're looking at such a massive goof-up that they're weighing in at 300K+ or something. And even that wouldn't be completely impossible to fix. At least they're catching it NOW, rather than at some point down the road. And that, gentleman, is WHY they ship an initial unit for testing and acceptance, to help find any issues before the rest of them are built."
End of quoted section
On top of what the above said, the loco comes in at 287,000 pounds, which is below the spec max of 295,000 pounds. However, the weight needs to be distributed 24-26% per axle, and that's where the problems may be (only speculating). It might be necessary to add ballast at one end , or to rearrange some of the equipment layouts to distribute the weight per axle better. But this is a pilot unit, and that's part of what you are supposed to do with pilot units, find problems and change them for the production units.