Re: Outside frame vs Inside frame

I don't think it was the frames per se, it was the counterweights necessary when using outside frames.

The Colorado narrow gauges all used flangers that could clear a reasonably broad path once the line had been plowed, controlling the ice issues.

The White Pass on the other hand has springs that run under the snow and ice and did not use the same type of flangers as the Colorado roads.

Also, the amount of snow and ice, plus the length of time the railroad had to operate in those conditions was greater and longer.

The late J.D. True addressed this in one of his books. If I recall correctly, he liked the K-28s and #69 well enough as pullers, they just had issues with derailing that made them unpopular.

If I am wrong, I will be happy to be corrected.