Re: Radii of curves? *LINK*

Although you didn’t list it - the Uintah Railway had two 65 degree curves. This equates to a 88' radius. One of those curves was originally 75 degree, which is a 76' radius, but was reworked to 65 degrees because it was giving the Shays trouble. The D&RGW and RGS were wimps as their minimum was 24 degrees, which equates to 288' radius. One of these Uintah curves was on a 7.5 % grade while the D&RGW and RGS had a 5% maximum grade.
I might add, the Uintah ran much larger locomotives, then the K series, over this route. The Uintah #50 and #51 weighed 246,000 tons whereas the K37 (the largest K) only weighed 187,250 tons.
Bill