Saturday, September 24, 2011

1961 Athearn HO scale 4-6-2 Heavy Pacific...


...some interesting notes on this locomotive...

The slipping problem it came with was a result of an ear clip breaking. It is used to hold the worm gear in line and in contact with the bull gear. This would hold until a load was applied, whereupon it would push up and out, disengaging the drive. By installing a cone spring that pushes down on the top of the worm gear housing, it keeps the gears engaged while retaining the drive axle's ability to flex and roll in motion...

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The tender electrical connections are shear genius. At a time when models were not quite standardized, leaving locomotives wired to go in different directions because of polarity, Irv came up with a novel solution. By making the terminal ends interchangeable with a simple plug in socket installed in the tender body and frame, polarity--and therefore directional travel---could be correct, even if one took their new prize to another layout...

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