Re: Minimum curvature for 3 truck shay

Herb Kelsey Wrote:
-------------------------------------------------------
> I have always heard that the Uintah and the
> Roaring Camp and Big Trees featured 66 degree
> curves. That translates to 86.8' radius using the
> below formula.
>
>
> 5729 / x = y (5729 is the radius of a 1 degree
> curve)
>
> x = radius in scale feet and y = degree of
> curvature
> - or -
> x = degree of curvature and y = radius in scale
> feet.
>
> x being the known figure

Bender's book Uintah Railway states Moro Castle curve was widened from 75 degrees! Of course the Uintah only used two truck shays. I have to wonder why they didn't try three truck? JP