Search found 1899 matches
- Mon May 08, 2023 5:02 am
- Forum: Technical - non Engines and Boilers
- Topic: Flotation
- Replies: 11
- Views: 14421
Re: Flotation
I have made a steam ejector out of one inch soldered copper tube fittimgs, with suction (standard one inch tee branch) about 1/2 inch above the bilge, and discharge 20 inches higher elevation into the paddlebox of the Margaret S. With a 0.1 inch steam nozzle @ 150 PSIG, 0.5 inch throat diameter, 10 ...
- Sun Feb 26, 2023 10:56 pm
- Forum: Technical - Engines and Boilers
- Topic: Building a Big Engine
- Replies: 20
- Views: 29129
Re: Building a Big Engine
"Have you see these folks?: https://www.emachineshop.com/" Yes, I have used this service to make tubesheets for my boiler, very good work. However their software cannot represent the valve sleeves. I tried to do this, even called their experts, and was told the feature of drilled passages in a tube ...
- Sun Feb 26, 2023 10:48 pm
- Forum: Technical - Engines and Boilers
- Topic: Building a Big Engine
- Replies: 20
- Views: 29129
Re: Building a Big Engine
somehow this wet air pump picture got lost in the last few posts.
- Sun Feb 26, 2023 10:39 pm
- Forum: Technical - Engines and Boilers
- Topic: Building a Big Engine
- Replies: 20
- Views: 29129
Re: Building a Big Engine
Boiler - Plenty of this size on E-bay, about 30 BHP (9 gal per hour fuel oil) at 50 PSIG. Boat - The hull may be from a converted sailboat or other displacement boat. Used hulls are quite cheap. Chris may just bite the bullet ans build the hull. 40 ft would be too short, but could be made to work. 6...
- Thu Feb 23, 2023 5:25 am
- Forum: Technical - Engines and Boilers
- Topic: Building a Big Engine
- Replies: 20
- Views: 29129
Re: Building a Big Engine
Eccentric, Iron Casting, 8 inch diameter.
- Thu Feb 23, 2023 5:24 am
- Forum: Technical - Engines and Boilers
- Topic: Building a Big Engine
- Replies: 20
- Views: 29129
Re: Building a Big Engine
Work on this big (13 x 27 Bore & Stroke) engine continues. We found heavy mechanical tubing, and Chris machined the main valve columns without outside contracting. Plenty of chips! Chris has made patterns and contracted many cast iron parts, photos show eccentric (8 inch diameter), air pump in progr...
- Wed Jan 11, 2023 12:32 pm
- Forum: Members' Websites and Boats
- Topic: Monotube Javelin
- Replies: 40
- Views: 121522
Re: Monotube Javelin
Sorry for the late reply. ASME Code rules do allow pipe sections, caps, reducers, etc to form a pressure vessel. To meet code there are many detailed rules, and to have a code stamped pressure vessel the fabrication must be performed by a "Code Shop", with calculations, material certifications, etc....
- Thu Dec 22, 2022 11:38 pm
- Forum: Technical - Engines and Boilers
- Topic: Towards Building a Steam Powered Outboard Motor
- Replies: 53
- Views: 62026
Re: Towards Building a Steam Powered Outboard Motor
Your rings may well be OK, for a small bore the rings are relatively more rigid than skinny rings on a much larger bore. Not something that is covered in my textbooks. I would however recommend a very slight edge treatment where the lapped bore surface mates at 90 degrees with the exhaust port passa...
- Wed Dec 21, 2022 2:26 am
- Forum: Technical - Engines and Boilers
- Topic: Towards Building a Steam Powered Outboard Motor
- Replies: 53
- Views: 62026
Re: Towards Building a Steam Powered Outboard Motor
I remember porting the exhaust passages on two stroke Go-Kart engines many years ago. Engines generally had circular exhaust ports, and we would try to make them into square ports for better engine breathing. A common problem if the ports were re-shaped to actually approach exhaust ports with horizo...
- Wed Dec 21, 2022 1:52 am
- Forum: Welcome
- Topic: New Member
- Replies: 6
- Views: 3489
Re: New Member
Nice boat, should make a good steamer. Where are you?