GP-40 Derails

[mlt1]

Hello All,

Got a GP-40 Santa Fe which came with my Silver Streak Bachmann freight set.  Seems as though it has an occasional problem with derailment, but only with the trailing truck set.  Could the truck screw be too tight or too loose?  Any other suggestions?

Thanks,

mlt1   

[Guilford Guy]

The wheels may be out of gauge... does it derail at specific points on the layout or at random?

[JM]

Yep, out of gauge wheelset.I had an FT and a GP  40 that did that, I used a pair of long needle nose pliers to put the wheels back in gauge and no problems since. You need a wheelset gauge to make sure you get it right. LHS will have one...or....try using a piece of good track, like Atlas, it's a jury rig way to do it but it will do till you can get a gauge.