stan2004 posted:gunrunnerjohn posted:See my post about the issue. I'm wondering if some diodes and a directional relay would fix this. I suspect it's because of dynamic braking when the power is removed and the drivers provide a current path from the motor leads and stop the motor too quickly.
Link? I don't know about his specific collection of PS3 engines but there's not much room to add a relay.
If this is the dynamic braking issue as JGL and GRJ surmise, it seems to me it would also show up in command mode when E-stop is pressed as track power is instantly removed from the track. Point being while E-Stop is not a "normal" operating mode the software fix would benefit more than just the conventional guys.
Link is HERE.
This GS4 Daylight is the only PS3 steam engine I have presently that has this issue. I know of at least two others I have had that have the 'quick stop" issue. One is the MTH Imperial Mikado and the Other is the MTH Imperial 0-8-0 switcher, both PS3 products. FWIW, my only other PS3 steamer, an Imperial Railking 0-6-0 (from 2013) DOES coast in conventional and operates beautifully. It doesn't coast as far and long like some other PS2 engines but it doesn't skid to a stop.
I apologize for not address JohnGaltLine's post sooner. Without power, the drive wheels can't be turned due to gearing. This is common with all MTH locos. I use the direction button all the time, especially when switching. Granted I won't be switching with a large 4-8-4 passenger engine but still, even throttling down a bit quick will cause it to lock up and skid. Extreme caution is required. My biggest concern with this issue is the gears getting chewed up after this happening one too many times, even with extreme care in preventing it. This is especially true on the club layout with several people operating on the same track at once. One E-stop press or short is all it takes.
