Switchers stalling? Please no.

[Schraddel]

Hello folks!

several weeks ago i bought an Athearn Genesis MP15AC.

My "off topic" loco, i purchased her for model technical comparison.
Performance is good, but i used to creep with switchers over the rails. This MP15AC was stalling to much for my taste. Alls frogs are live frogs, even the points got soldered conections by wires.

I made this modification:

One of the trucks was demounted. Both trucks are qual and you see the half moon shaped bolsters where the main frame sits up. The truck can rock forth and aft, but not sidewards. For one truck these half moons are o.k. to stabilize the loco, but not on both trucks. On uneven track it is possible that tree wheels on one side have "airtime" and the forth is just above the sh...(no political correct expression) of an fly.
Stall. :evil:


Short and dirty: Cut.
The second truck stay unmodified as it is.


Take an very short lenght of an tube as shimming, equal lenght as the former half moon's height. A package of washers will do the same use.
The truck is now able to rock in every degree. The second truck is prevented by the malf moons fron rocking sidewards.
Thus you have here an loco with an equalized running gear.

No contact problems.
No stalling.

I hope this may solve some problems.

Greetings Lutz