Capt. Mack The easiest way is to not measure the DO at all?! On the ST Portland we are using AGK100 a Drew Marine product that contains Hydrazine and a corrosion inhibitor, also sold as separate compounds under the name Drewplex. We use two test kits one for hydrazine and one for hydrate alkalinity....

I just got a reply that Ron is alive and living in Portland, but the source was not able to provide any other info?

So Where in the World is Ron Fossum?

David Vik

Last time I saw Ron was a couple of years ago when he stopped by the Portland and left some copies of Steamboating Magazine. He was listed in the 2018 NWSS membership list, but does not appear in the 2019. Queries of local steamers did not provide any better information. David Vik PS: The Portland w...

Mike, Foley has kinda become your hallmark. When someone at a steam up would ask which one is Lopez Mike it was easy to tell them to look for the guy with the big ugly flat sheared boat. Now we may have to start telling them he's the one with the straw hat and seersucker suit.!? Great job and I hope...

In this application the arrangement is mostly so that the pump never hangs between up and down strokes, My experience on a Fletcher Class destroyer with Worthington vertical pumps, that had free piston main valves, was often one of frustration. Not if, but when the main valve hung-up the only way t...

Mike, This should be easier to see I hope. I'll try to get some wide shots, but from the eccentrics to the engine cylinder is around 25ft so it's hard to get an all in one. Just for fun I tossed in a shot of the crosshead with drip oilers. There are 19 per side not counting the pressure oilers. This...

This is the reversing link for the ST Portland's port cylinder. Note that the "Stephenson" link has a suspension link that is attached at the center, but fixed so that it can only sway back and forth as the link moves. Reversing is done by shifting the 11' long rod to the valves up and down, and thu...

Diagram.

Please forgive the multiple attachments, but I had to do multiple scans to keep the files small enough to post. The following post will contain the diagram referenced. FYI: this comes from is Part IV of a 1946 Pub that was primarily intended for instruction at the Naval Academy it is not a manual as...

This came from a 1946 US Navy Pub on propulsion steam engines. Thought it might fit with the on going discussion.

Dave