davidtltc Wrote:
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> Interesting, so only by adding or subtracting more
> weight to the locomotive would the tractive effort
> change. It also stated that it was the largest
> outside frame engine of its kind when it was
> delivered to the Uintah Ry. Of course that was
> before the K-36's were delivered to the D&RGW.
The tractive power is purely a function of boiler pressure, cylinder size and driver diameter. Weight on drivers is a factor in pulling ability, but not in computing tractive effort. That is where "factor of adhesion" comes in usually the builder tried to get the weight on drivers to 4X the TE for a ratio of 4:1. Some engines had more, some less. The smaller the ratio, the more slippery the engine becomes.