Do you have any progress photos?
Thank you! I do have progress photos, but won't bother posting them here as I have yet to deduce how to post photos inline with text. Also, with the high caliber of work posted daily on this site, I would imagine most viewers would be bored stiff viewing the construction of a simple model such as the PM #3. However, if you look at the bottom of my posts, you can see a link to my blog which does have a few build articles on this power plant with photos to view if you wish.
Have you made any attempt to measure the dynamo output voltage and current? Along with the required boiler pressure?
Generally I steam this model at around 20 psi. In the video, you can read the gauge at the top of the boiler if you have a big enough screen. The PM dynamo will produce much more energy than I'm showing here, but this little engine could never drive it. I have a selection of E10 bulbs so with the proper belt ratio I can pick one that will produce a pleasing light and yet not overwhelm the engine with an unworkable load. Without looking, the bulb is probably a #131 which when nicely lit is around 1.30V and .10A.
