Bob: Another solution might be to shorten the center springs to reflect the shallower depth of the center spring mounts. The way to do this would be to cut a piece of brass tubing that the spring would telescope into the correct length and use a Dremel cut-off wheel in a drill press to shorten the affected springs.
This is just a suggestion, since I am unfamiliar with the FM Trainmaster suspension other than your description of it Bob Nicholson ___________________________________________ --- In [email protected], "Dale" <dcdewitt@...> wrote: > > Bob, > > I don't have one of the specific locos that you are try to work with, but I > have numberous times resprung steam locos where all drives failed to touch > the rails simultaneously. Generally I prefer to put slighly stiffer springs > on the end axles to stablize the loco and softer ones on the center axles so > that they can compress slightly putting all wheels on the rail. This might > also work on the loco you are working on. > > Dale DeWitt > > --- 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/
