Search found 1851 matches

by DetroiTug
Tue May 17, 2022 8:19 pm
Forum: Sales and Trade
Topic: 20 x 22 four blade prop for sale.
Replies: 0
Views: 3

20 x 22 four blade prop for sale.

20 x 22 four blade bronze prop for sale. Good deal as they are very expensive new.

https://www.ebay.com/itm/265696561911?h ... SwsAJig~5E
by DetroiTug
Tue Apr 05, 2022 9:25 pm
Forum: General Steamboat stuff
Topic: Potential Steamboats Queen Mary Lifeboats
Replies: 12
Views: 1288

Re: Potential Steamboats Queen Mary Lifeboats

Quote: "I had seen video of a converted lifeboat in Indiana/Michigan on YouTube ages ago" Could have been the late Tom Stockton's boat the ''Arbor queen'', but a guy in Ohio has it now. There are four or five converted life boats in Michigan, I went to one meet in Michigan there were three or four, ...
by DetroiTug
Mon Mar 28, 2022 9:10 pm
Forum: Technical - Engines and Boilers
Topic: A Funny Looking Slide Valve
Replies: 7
Views: 645

Re: A Funny Looking Slide Valve

"unbalanced slide valves are hard on valve guides''

Equally important is the centerline of the valve rod should be as close as practical to the plane of the cylinder face. This imposes a more a linear force between the two rather than a tendency to rock the valve on it's ends.
by DetroiTug
Mon Mar 28, 2022 12:29 am
Forum: Technical - Engines and Boilers
Topic: A Funny Looking Slide Valve
Replies: 7
Views: 645

Re: A Funny Looking Slide Valve

Slide valves go back further than that. Rocket built in 1829 had them. They have their advantages, they'll put up with more abuse, lower maintenance. The big one is their ability to lift off the face in a carry over event. When running a hotwell the water is more tightly managed. For operators manua...
by DetroiTug
Mon Mar 21, 2022 8:26 pm
Forum: Technical - Engines and Boilers
Topic: Better Piston Rings
Replies: 14
Views: 1307

Re: Better Piston Rings

Bart, Good synopsis.
by DetroiTug
Mon Mar 21, 2022 6:13 pm
Forum: Technical - Engines and Boilers
Topic: Better Piston Rings
Replies: 14
Views: 1307

Re: Better Piston Rings

The old adage:

Slide valves wear in
Piston valves wear out

A piston valve in good fit is far more efficient though. A slide valve with 5 square inches of face at 250 psi has 1250 pounds of force exerting on it, quite a loss in horsepower.
by DetroiTug
Thu Mar 10, 2022 3:29 am
Forum: General Steamboat stuff
Topic: Sidewheel steamer aircraft carriers in the Great Lakes
Replies: 3
Views: 425

Re: Sidewheel steamer aircraft carriers in the Great Lakes

Quote: "All you have to do is to make a statement about the US Navy's coalburning, side wheel aircraft carriers..."

That would prompt an immediate Google search 😀
by DetroiTug
Wed Feb 02, 2022 12:59 pm
Forum: Technical - Engines and Boilers
Topic: Upscaling a Hasbrouck engine
Replies: 26
Views: 3053

Re: Upscaling a Hasbrouck engine

I ordered a set of plans for the Hasbrouck #10 engine from Ray back around 1981? They were like $7 and they came with a photograph of a completed engine and a letter from Ray thanking me for the purchase and to please send progress pictures. Never built. Still have the packet somewhere. Found his ad...