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not sure where to put this so i put it here. Ive got my 25" radius curve down, but there seems to be a issue with my9-44cw. As it goes around the curve one, just one of the wheels rides up and off the outside rail.
The wheel in question is number 4 (first one on rear trucks). What is causing this?..ive brought the tracks outward more but it still does it. It's driving me nuts! Thats the only unit that does it also. I belive this unit is a Kato. I have another 9-44cw but that one is Bachman and does not do it.
Kato Dash 9 trucks seem to be stiffer than other brands. Seem like they will derail on anything from a kink in a curve to an high joint going from straight to curve track, i used to have one and it would do the same thing on less than perfect curves.
Whenever I have a new engine and it seems to derail, never mind old/modern steam/diesel....makes no never mind...I can trace the problem 90% of the time to rails that are not level when they should be transversely, or when they are not superelevated consistently. I often find on curves that the outside rail dips just enough that one of the outer wheels' flanges can slip over top of the rail head and its counterpart on the opposite side of the axle is only too happy to follow it.
But the very first thing to check, bar none, is the wheel gauge....I agree.
One other possibility worth checking is if the truck sideframe is being prevented from swinging outward to the fullest extent intended by the designers. Sometimes flashing or a mis-applied appliance hanging on the underframe gets in the way.
Thats the only unit that does it also. I belive this unit is a Kato. I have another 9-44cw but that one is Bachman and does not do it.
