For some reason, whenever my MTH 2-8-0 Consolidation comes into a right-hand switch from the branch, the lead truck doesn't want to straighten back out. It keeps going as if the curve continues, and derails.
It does it no matter what. Fast. Slow. Under power. Pushing. It just walks right up and over the rail with no hesitation and no provocation.
I can't see anything wrong with the locomotive or the switch. The lead truck swings freely. There are no dings, dents, bends or flaws in the switch.
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What kind of switch ?
Lionel O-27, 42" diameter switch.
Everything else I own roars through there at full speed.
I made some progress with this. The swing of the lead truck felt a little "sticky" so I disassembled it, cleaned off the old lube, and applied a touch of white lithium from a spray can.
We've gone from 0% to 95% success rate running through the switches.
It might need a bit more tension or down-force on the leading pilot.
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