Re: arc headlights and dynamos - A bit more research

Posted by Todd Hackett on Jan 30, 2020; 12:30am
URL: http://c-sng-discussion-forum.254.s1.nabble.com/arc-headlights-and-dynamos-tp15165p15210.html

John Greenly wrote

...I wish you did have a good side-on photo of your On3 #12....

It occurred to me that I didn't check my old B&W photos. I tossed all my prints, and I didn't include the B&W negatives when I sent all my slides and negatives out for scanning many years ago (I think it was around 17 to 14 cents per frame for color, and 75 cents for B&W). I found these photos taken on August 8, 1993 on Don Peterson's old DSP&P layout in Louisville, dug out the film scanner, and digitized them. Model Railroading did a spread on this layout around the same time, and I think it had a  photo or two of my #12. I thought I kept that issue when I moved, but I did get rid of most of my old magazines, and I can't find it now. BTW, I don't think you can get very accurate measurements from an oblique view like that. The apparent distance along the locomotive's axis will decrease with distance from the camera, and the amount of error from that will be a function of the distance from the camera. If the tank was perfectly centered between the domes, the distance on the photo would be less from the tank to the steam dome than to the sand dome. Since the opposite is true, it's undoubtedly shifted forward, but all you can do from this photo is estimate how far.