QUOTE: Originally posted by Michaell The K4's do not have smoke, the only BLI engine that had smoke was the SP cabforward and it was not very good. Actually I don't think I would want a model steam locomotive in my basement that could smoke in a realistic manner you would have to wear oxygen mask. As for tracking problems I would expect it on any engine as large as a 4-6-4 on 15 inch radius curves.
QUOTE: Originally posted by WickhamMan Back EMF is basically a cruise control feature. It keeps the engine running at a constant speed over uneven terrain. I have a BLI Hudson and can attest to the problems keeping it on the track. Especially troublesome are turnouts and downhill curves. I have only a slight downhill into a curve and at any reasonable speed, the engine derails once every 4 or 5 passes. I am curious as to how to shim the engine to put more weight forward to avoid this problem. Does anyone have any specifics on how to accompli***his as RailGuyHO suggested?