Kudos to the repair dept. at Nicholas Smith trains

As a scale-y Hi-Railer, I almost didn't look at this thread, but as my first loco was a 2055 Santa Fe-style small Hudson twin of your 665 (except for smokebox front and tender style), I thought that I'd look.

What impressed me - but didn't surprise me - was the slow, steady running toward the end of the video; some PW Lionel steamers, this 2055, etc. style in particular, were capable of much besides zoom-zoom running. Not Odyssey-slow, for sure, but very presentable Hi-Rail performance.

I should get my 2055 refreshed, I keep saying. For years it's been a worn down shelf queen after all those miles so long ago (starting Xmas, 1955). 

D500

I agree with you on the performance of this loco. Except for the small rise in my layout (it is temporary, so not exactly level) this engine will run at that speed for a while. Refurbishing it was the best investment I have made in this hobby. It was my father's set.