Sumpter 250's duff challenge
#47
A ng 2-8-8-0 would be a really interesting project and a cool concept!

Certainly, your OF 2-6-6-0 was a very creative and plausible concept. Your modeling results are worthy of the concept.

I checked Hilton's American NG RR, and found mention (and a folio) of a proposed Tweetsie 2-6-6-2. It didn't say anything regarding IF or OF. He mentioned one of the two D&RGW 2-8-8-2 schemes...with the statement that the D&RGW chose to go with creating the K-37s instead (which is about what I remembered). I know that there are folios out there for the 2-8-8-2s. For the C&S, power, that was discussed in NG to Central City & Silver Plume (a Colorado Rail Annual)...which was almost certainly intended purely for the ICC abandonment hearings.

I found the folios for the D&RGW 2-8-8-2s on my computer. The smaller of the two appears to have been inside frame design, TE=53,400 lb and an engine weight of 125t. The larger one, with the running gear of two K-27s, had a rated TE=75,000 and an engine weight of 188t, considerably more than merely two K-27s. As I recall, the K-28s at a total engine weight of 78t.

So, perhaps, your OF 2-6-6-2 has a TE= 3/4*75,000 ~ 56,000lb? I tend to recall the Uintah Mallets being around 42,000lbs.
Michael
My primary goal is a large Oahu Railway layout in On3
My secondary interests are modeling the Denver, South Park, & Pacific in On3 and NKP in HO
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