Search found 84 matches

by johngriffiths
Sun Feb 28, 2016 9:48 pm
Forum: Technical - Engines and Boilers
Topic: Circulating water requirements
Replies: 13
Views: 14463

Re: Circulating water requirements

if your fuel consumption is 3 UK gallons/hr and you calculate pump ram diameter, stroke and RPM using as a base 3 US gallons/hr the cooling water delivery will be too small, by 16%, so you make sure you start with the right unit. It would be a hot summer here before our rivers reach 70.

JohnG
by johngriffiths
Sun Feb 28, 2016 9:27 pm
Forum: General Steamboat stuff
Topic: Steam water heater
Replies: 21
Views: 23498

Re: Steam water heater

missed this because I was otherwise engaged. Shamrock has an steam lifter which gently warms water for the sink. Turning on the cold tap opens a steam valve and water is lifted from the lake and flows lukewarm through the cold tap outlet. This is ok for washing dishes, hands etc. If you want hot wat...
by johngriffiths
Sun Feb 28, 2016 8:57 pm
Forum: Technical - Engines and Boilers
Topic: Circulating water requirements
Replies: 13
Views: 14463

Re: Circulating water requirements

Beware of Barts's gallons, they are short. Allow 135,000 BtU for a UK full blooded version of a gallon. Always had this problem when buying gas in the States, got 16.6% short measure all the time:-)

JohnG
by johngriffiths
Fri Feb 26, 2016 4:09 pm
Forum: Technical - Engines and Boilers
Topic: Coal Firing,good info although the video is locomotive based
Replies: 4
Views: 5778

Coal Firing,good info although the video is locomotive based

https://www.youtube.com/watch?v=NHo860Q66Gw

British film, London, Midland and Scottish fireman training film with good animations
by johngriffiths
Thu Feb 25, 2016 11:56 pm
Forum: General Steamboat stuff
Topic: Steamboats stuck in Museums stores
Replies: 2
Views: 5132

Re: Steamboats stuck in Museums stores

Hi Mike, After a fairly big restoration including a boiler rebuild, done by Dorothea and an engine rebuild in house,(polished crank pins showing no wear, unlike the thrust) plus an in house replacement of the skeg where the stern tube went through, Birdie was run for one year and displayed on the wa...
by johngriffiths
Thu Feb 25, 2016 8:49 pm
Forum: Technical - Engines and Boilers
Topic: BOILER PRIMING
Replies: 42
Views: 36391

Re: BOILER PRIMING

coal size commonly known here as doubles, about 1" x 2" or slightly larger 1 1/2" x 3", firebox 12" diameter, Centrifugal fan so going into reverse is not a problem. I don't have a blower. Important to have a well sealed firedoor and ashpan to base/bottom. Fan axis parallel to engine crank, it vents...
by johngriffiths
Wed Feb 24, 2016 5:31 pm
Forum: Technical - Engines and Boilers
Topic: BOILER PRIMING
Replies: 42
Views: 36391

Re: BOILER PRIMING

Johng>>>"so I stick to anthracite" Please tell your method for burning Anthracite? Engine driven fan blowing into the ash space beneath the grate driven by a plastic belt in the form of a tube jointed with Al connectors. Use charcoal to get it burning, takes 40 mins from cold to underway. There alwa...
by johngriffiths
Tue Feb 23, 2016 11:54 am
Forum: Technical - Engines and Boilers
Topic: BOILER PRIMING
Replies: 42
Views: 36391

Re: BOILER PRIMING

Another off topic anecdote but relevant to Daniel's post. A few years ago a certain boilermaker purchased cheaply a large quantity of 5/8" tube so this is what he fitted to his boilers. At one Windermere rally the coal was somewhat bituminous and we were bemused to see the owners of these boilers re...
by johngriffiths
Sun Feb 21, 2016 6:18 pm
Forum: Technical - Engines and Boilers
Topic: Lubrication free condensing?
Replies: 51
Views: 39952

Re: Lubrication free condensing?

I use the polyester material, it looks like white moss, used for the linings of jackets. Here it as available from the local haberdashers in large sheets which can be cut to whatever size convenient and a large rubble bag of the stuff costs between 50p and £1. Being polyester it has an excellent aff...
by johngriffiths
Thu Feb 11, 2016 9:36 pm
Forum: Technical - Engines and Boilers
Topic: single cylinder rotary valve engine design question
Replies: 22
Views: 18377

Re: single cylinder rotary valve engine design question

If I recall correctly Corliss engines used semi rotary valves and steam pressure held them on the "face". Worked very well for long periods between overhaul. We only have to think of "Helen" and "Rina" at Trencherfield Mill, Wigan. Corliss valves are used on all four pots and it (they) ran from 1907...