Re: One Big NG Heisler!

Yep. The original contract and spec. documents are with the PNWC-NRHS in Portland and I have scans. 15" bore x 12" stroke. 180lb working pressure with 200lbs as max. working pressure. TE. was 22,200 based on 75% of boiler working pressure. Weight fully equipped 109,000 as built. As built it was not air brake equipped having only a steam brake on the engine. Later a single air pump was added in front of the fireman's side of the cab. In later years that was removed and a cross compound pump installed on the engineer's side as we see in the above photo. I assume the weight went up a bit as the added single air pump was replaced by the heavier cross compound. The fire pump and the hose reel on top of the cab were all later additions as well.