Search found 49 matches

by Kelly Anderson
Fri Apr 12, 2019 1:47 am
Forum: Technical - Engines and Boilers
Topic: British Rivet Manufacturers?
Replies: 9
Views: 520

Re: British Rivet Manufacturers?

They are for use in repairing riveted boilers, and no commercially available US made rivets are suitable for boiler work. British boilermakers are doing enough riveted work that I would like to think that there is someone is mass producing boiler rivets. If I can find them and cross reference the al...
by Kelly Anderson
Thu Apr 11, 2019 9:05 pm
Forum: Technical - Engines and Boilers
Topic: British Rivet Manufacturers?
Replies: 9
Views: 520

British Rivet Manufacturers?

At the 10:00 minute mark in this video, Fred Dibnah visited the Boulton Rivet Manufacturing Co. I am unable to find this company on line. Where do British boilermakers get their steel rivets in 2019?
by Kelly Anderson
Sat Oct 20, 2018 1:53 am
Forum: Technical - non Engines and Boilers
Topic: Prop shaft diameter ?
Replies: 9
Views: 753

Re: Prop shaft diameter ?

What diameter is your crank shaft? My boat is 23' long, weighs 3,000 lb., has a 6 plus hp engine, and a 1" stainless steel shaft, and is perfectly happy. My last boat is 20' long, weighs 1,200 lb., has a 2 hp engine, and a 1-1/4" hollow brass shaft about 6' long which would buckle under full steam u...
by Kelly Anderson
Sat Jun 23, 2018 3:05 am
Forum: Technical - Engines and Boilers
Topic: Funnel Diameter to Grate Area ratio
Replies: 7
Views: 1383

Re: Funnel Diameter to Grate Area ratio

However, the question for today is whether there is a rule of thumb out there for stack internal diameter against grate area. One would assume that our ancestors would have worked that out. Indeed they had, but your question is worded to ask for a comparison between apples and oranges. The question...
by Kelly Anderson
Sun Apr 01, 2018 8:48 pm
Forum: Welcome
Topic: Greetings from Maryland
Replies: 10
Views: 2455

Re: Greetings from Maryland

Navy General Board wrote:I recently have been researching information for a piece on triple expansion engines and turbines.
What piece are you after?
by Kelly Anderson
Sun Jan 28, 2018 6:01 am
Forum: Technical - non Engines and Boilers
Topic: Valve Material Identification
Replies: 12
Views: 2580

Re: Valve Material Identification

Are you sure that your local hardware store doesn't offer replacements? My local True Value has a number of bins of replacement valve discs. It doesn't have the grain texture of Tufnol and is very brittle. Taking a bite at it, it has the feeling of a ceramic rather than baked fibre. Is that a clue? ...
by Kelly Anderson
Fri Jan 26, 2018 11:55 pm
Forum: Technical - non Engines and Boilers
Topic: Valve Material Identification
Replies: 12
Views: 2580

Re: Valve Material Identification

Old Steamer wrote:Just a thought since I posted the above; it wouldn't have been an ordinary fibre washer???
Yep.

Make a new seat turned out of Teflon bar for a trouble free repair. Or you may find a replacement washer at the hardware store.
by Kelly Anderson
Sun Jan 14, 2018 8:40 pm
Forum: Technical - Engines and Boilers
Topic: bearing material inside steam chest
Replies: 2
Views: 936

Re: bearing material inside steam chest

Cast iron will be fine.
by Kelly Anderson
Tue Jan 09, 2018 2:06 am
Forum: Technical - Engines and Boilers
Topic: Primary and secondary air inlet vent sizes
Replies: 8
Views: 2185

Re: Primary and secondary air inlet vent sizes

A rule of thumb for natural draft boilers is that the area of the stack is 25% of the grate area. The two launch boilers that I have experience with agree with that rule of thumb, and also have ash pan doors the same size, i.e. 25% of the grate area.
by Kelly Anderson
Thu Jul 20, 2017 1:17 am
Forum: Technical - Engines and Boilers
Topic: Retarders
Replies: 7
Views: 2481

Retarders

Do any one of you have any experience with using retarders in the tubes of your VFT? Do you consider them to be good, bad, of indifferent? The stack temperature on mine is generally too high and sometimes pegs the 800 degree F thermometer on natural draft.