stan2004 posted:Well, now we're shooting in the dark and speculating. From what I've read this occurs in PS3 STEAM engines. Since the flywheels are the same in PS2 and PS3, and PS2 coasts just fine, the question is what's different? AFAIK, all PS3 steamers have a processor in the engine (in addition to the one in the tender). PS2 only has a processor in the tender. Of course the flywheel in a steamer is in the engine (and I haven't read reports of this happening in a diesel). So it could be about the "new" software in the engine processor and how it interacts/uses the energy in the flywheel that's the design issue. Apparently MTH understands the issue (and we don't) so we're just playing 3-blind-mice scurrying around for cheese...
I suggest there's little to be gained in speculating why/how MTH designed the coasting software as they did. I'm more curious about if anyone other than SJC has even given them feedback. To that end, that's why I suggest if this is a concern to anyone to send a note to MTH. From what I can tell MTH has not said "no"... and the squeaky wheel does get the grease.
FWIW, Barry Broskowitz reported, after testing, that his Imperial Mikado also had the "quick stop" problem and reported it to MTH so I'm not the first one to tell them.
I should also reaffirm that I have another PS3 steamer, 30-1570-1, that DOES coast in conventional. This is, apparently, a recent PS3 steam issue.
