I am going to have to correct myself here. In looking at the actual Mason records (I found them) Both 23 AND 24 are built with the larger boiler.
FIrst off, DSP&P No. 5. Mason Locomotive No. 589 was a one-of. This is the former Kansas Central Railway L.T. Smith No 5. The note says "Returned to us, altered and built to Denver So. Park & Pacific R. Names Leadville No. 5 Feb 4, 1879 3 ft. ga. I say one of, because it had a 38" dia. boiler and 34" drivers and 12 x 16 cylinders. 98 9'6" 2" dia. tubes
The DSP&P Oro City Mason Locomotive No. 591 Shows a 38" dia boiler and 37" drivers and 13 x 16 cylinders. 98 9'6" 2" dia. tubes
DSP&P Locomotive No. 9, Kenosha; Mason No. 602; shows a 42" dia. boiler and 37" drivers and 13 x 16 cylinders. 98 9'10" 2" dia. tubes
However, the DSP&P locomotive No 10, Granite; Mason No. 607; shows it going back to the 38" boiler. 13 x 16 cylinders, 98 9'6" 2" dia. tubes
DSP&P Locomotive No. 14, Twin Lakes; Mason No. 611 shows the beginning of a 42" standard boiler. 13 x 16 Cylinders, 111 9'10" 2" dia. tubes
DSP&P Locomotive No. 23, Granite; Mason No. 617 shows a 44" boiler with 14 x 16 cylinders 119 9'10" 2" dia. tubes
This is the same as DSP&P No. 24, Buena Vista; Mason No. 618
All of the boilers are show as being Iron and No boiler pressure is listed.
Another little quirk is that since the trailing truck supporting the tender had six wheel trucks, the manufacturer's spec's show that the middle pair of wheels were 1" narrower (or 35") gauge.
So to be accurate, according to Mason's own records, The DSP&P actually had 3 classes of 2-6-6T Mason Bogies with one oddball.
I will try to scan a few sample pages and upload them (wish me luck)
Rick
Edited 1 time(s). Last edit at 12/12/2019 10:07AM by Rick Steele.