Re: Porter 1203 TE

Dan Robirds Wrote:
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>
> The first is starting tractive effort. This is the
> point the wheels will slip, and varies from 20% to
> 30% of weight on drivers depending on conditions.
> For this era diesel or steam it is generally
> considered to be 25% (or a factor of 4 in steam
> terms). The 1203 should have up to 40,000#
> starting TE (160,000 x .25)

> The second figure is continuous TE. This
> represents the power that the engine can develop
> without burning up the electrical system. I
> suspect that the 19,200# figure might be the
> continuos TE suggesting a minimum continuous speed
> of about 9.6 MPH at full throttle. Where did this
> figure come from?
>
.The 19,200# @ 9.6 mph came from Porter, there was a tractive effort curve in the information that came with the locomotive when it came from US Gypsum to the Huckleberry. The tractive effort curve also listed the starting tractive effort as 42,000#.