Bob, I have several 3 axle AM locomotives including the Trainmaster with the sprung axle bearings. I've never had the issue of which you speak. I would carefully inspect the area where the bearing sits to see if there is something (dirt)imbedded in the gobs of grease that gets put into these things at the factory that might be causing the bearing to ride high (or low if you will). Ben Trousdale
P.S. I've been away from the list for a while causing trouble on SSTOT list. --- In [email protected], Bob Werre <bob@...> wrote: > > Apparently nobody has any of those engines, or was willing to look into > one regarding my derailment problems. Two evenings ago while > rearranging motive power, I did get into the trucks. I was correct in > that the middle axle area is different than axle one and three. The > sideframes are cast with recesses to hold the six coil springs. The > outside holes are deeper than the middle ones. So if one were to make > the assumption that American Models used the same springs on all the > axles the middle axle would be sprung more stiffly than the outside > axles. This would cause the rocking motion and resulting derailments > that I'm experiencing in some places. > > To correct this situation, I imagine using softer spring or springs with > fewer coils might solve the problem. Another solution might be to file > down the bearing blocks the same relative difference of the spring > holes. I'm not certain why all this needs to be considered--perhaps I'm > missing something here! > > Bob Werre > PhotoTraxx > ------------------------------------ Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/S-Scale/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/S-Scale/join (Yahoo! ID required) <*> To change settings via email: [email protected] [email protected] <*> To unsubscribe from this group, send an email to: [email protected] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
