Search found 1899 matches

by fredrosse
Sun Apr 03, 2022 2:31 pm
Forum: Welcome
Topic: New member
Replies: 10
Views: 11159

Re: New member

"In Finland boilers under 1.5 bar (72.5 psi) absolute pressure (0.5 bar gauge pressure) are not considered as pressure devices that need inspection. If condensator is used, that would give good enthalpy difference, even better if steam is superheated. Steam volumes would be comparatively huge, but h...
by fredrosse
Tue Mar 29, 2022 10:44 am
Forum: Welcome
Topic: New guy on the forum
Replies: 5
Views: 4377

Re: New guy on the forum

Hello Curt and welcome to the forum. Getting a steamboat together can cover a large range of spending. For a boat in the 18-22 foot range a good used steamboat can be had at reasonable prices, depending on what is considered reasonable. Finding one with Corliss rotary valve gear will be quite diffic...
by fredrosse
Sat Mar 26, 2022 5:21 pm
Forum: Technical - Engines and Boilers
Topic: A Funny Looking Slide Valve
Replies: 7
Views: 6747

Re: A Funny Looking Slide Valve

Excellent work, as usual from you. The oil slots on the slide valve is new to me, although I have only been involved with the study of steam engines for 70 years now.
by fredrosse
Fri Mar 25, 2022 6:02 am
Forum: Technical - Engines and Boilers
Topic: TWIN 32 x 38 mm - steam engine for small boats or canoes
Replies: 71
Views: 95486

Re: TWIN 32 x 38 mm - steam engine for small boats or canoes

Additive fabrication, saves material and machining difficulties.
by fredrosse
Tue Mar 15, 2022 12:14 am
Forum: Technical - Engines and Boilers
Topic: Better Piston Rings
Replies: 14
Views: 6333

Re: Better Piston Rings

perhaps "Clupet Rings"?
by fredrosse
Sun Mar 13, 2022 7:28 am
Forum: Technical - Engines and Boilers
Topic: Valve Gear Simulation
Replies: 14
Views: 11808

Re: Valve Gear Simulation

Don's writings... "The primary saviour comes in many variations of the Hackworth family of gears and near relatives like the Bremme and Greenly lever systems." This refers to the ability of the Bremme gear to properly to be a "saviour" of Hackworth-like valve gear which has inherent error in timing ...
by fredrosse
Sun Mar 13, 2022 3:11 am
Forum: Technical - Engines and Boilers
Topic: Valve Gear Simulation
Replies: 14
Views: 11808

Re: Valve Gear Simulation

The graph presented on my 31 Jan 2022 post within this thread shows the performance of the Marshall/Bremme (or Klug) valve gear on my engine. There are 7 useful link-up notches forward, and 7 useful notches in reverse. Cutoff from 30% to 85% stroke is illustrated throughout this range, in forward an...
by fredrosse
Tue Mar 08, 2022 11:05 am
Forum: Technical - Engines and Boilers
Topic: source for whistle valves
Replies: 2
Views: 1684

Re: source for whistle valves

This supply house also has other steam accessories, with better prices than I have seen for years. Boiler gauge glass set, with ball checks at $55.00, steam traps, steam pressure regulators, and high pressure steam hose
by fredrosse
Mon Feb 28, 2022 2:18 pm
Forum: Technical - non Engines and Boilers
Topic: Another Sidewheeler Building
Replies: 13
Views: 9861

Re: Another Sidewheeler Building

The first layer of Paddle-box veneer is coated with epoxy and clamped down on the upper surface of each piece. The "half circle" pieces on each side of a paddle-box is 1/2 inch plywood, that will also get mahogany veneer on the inboard side. The outboard side will be getting a pattern cut into the s...
by fredrosse
Mon Feb 28, 2022 10:44 am
Forum: Technical - non Engines and Boilers
Topic: Another Sidewheeler Building
Replies: 13
Views: 9861

Re: Another Sidewheeler Building

Boatbuilding partner Mark Grubb, fitting veneer wood to paddle splash guards. A few layers of this wood, placed with epoxy, and a final layer of Mahogany veneer should look good Sort of like making curved plywood.