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by Big Pete
Wed Nov 22, 2017 9:22 am
Forum: The Workshop
Topic: increasing fuel efficiency of engine
Replies: 11
Views: 154

Re: increasing fuel efficiency of engine

I read the original Post, but it appears to have been translated using Google Translate and the meaning is not clear to me at all. Your later Post is written much more clearly. I do not I see how it will be mechanically more efficient than a traditional engine. In a normal Reciprocating engine, alth...
by Big Pete
Mon Nov 20, 2017 10:22 am
Forum: The Workshop
Topic: increasing fuel efficiency of engine
Replies: 11
Views: 154

Re: increasing fuel efficiency of engine

That last 20 per cent, is Urea ammonium nitrate also known as Pig's Piss or Pig's Urine.
by Big Pete
Mon Nov 20, 2017 5:50 am
Forum: The Workshop
Topic: increasing fuel efficiency of engine
Replies: 11
Views: 154

Re: increasing fuel efficiency of engine

..and PV to the power 1.4 is also a constant where 1.4 is the adiabatic index for air / Nitrogen. (the ratio of the specific heat capacities at constant volume and constant pressure) Engines can easily be made with a higher thermal efficiency (Carnot efficiency) by increasing the peak pressure and t...
by Big Pete
Sat Nov 18, 2017 2:14 am
Forum: Crew Mess
Topic: Glass Steam Engine
Replies: 7
Views: 1179

Re: Glass Steam Engine

Do you know anyone who could make a better engine in Glass?
As for lube, maybe he sprayed Teflon on the bearing surfaces while they were red hot or maybe just a drop of silicon oil on the moving parts before starting.
BP
by Big Pete
Fri Nov 17, 2017 12:32 am
Forum: Crew Mess
Topic: Glass Steam Engine
Replies: 7
Views: 1179

Re: Glass Steam Engine

I shared the link to the Glass Steam engine with a Member of the Institute of Stationary Steam Engines, who reciprocated with the links below: - 1) Not a glass engine, but an engine in a glass box (I've seen it back in 1992): https://en.wikipedia.org/wiki/Steam_clock https://www.atlasobscura.com/pla...
by Big Pete
Wed Nov 15, 2017 1:36 am
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

Scandinavia, there should be a diagonal line across the "O" but I can't find it on my keyboard. I believe they used to use it before they went Metric.
I only came across it once.
BP
by Big Pete
Tue Nov 14, 2017 7:44 am
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

Merlyn,
You are heading in the right direction for the Rohr threads, keep going East.

BP
by Big Pete
Mon Nov 13, 2017 12:40 pm
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

Ah Merlyn,
You are over thinking, I believe Rohr threads were available in all flavours, just like Whitworth, Metric or American Course.
BP
by Big Pete
Mon Nov 13, 2017 1:35 am
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

But where do they use Rohr threads?
BP
by Big Pete
Sun Nov 12, 2017 6:57 am
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

The thinking man never stops thinking, and the analysing man never stops analysing, and it was getting hot and humid....
BP
by Big Pete
Sat Nov 11, 2017 7:10 am
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

"The hull of warships is typically cold because of the outside ocean temperature, he said." There is a substantial layer of insulation on the hull, at least there was when I did trials on them. The interior of the ships is climate controlled, temperature and humidity are closely monitored ...
by Big Pete
Tue Nov 07, 2017 5:59 am
Forum: Crew Mess
Topic: Running on Fumes
Replies: 1
Views: 106

Running on Fumes

This brings a whole new meaning to having an empty Gas tank and running on fumes!



http://dieselturbo.man.eu/press-media/n ... cs-as-fuel


BP
by Big Pete
Mon Nov 06, 2017 11:56 am
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

Digressing a bit, I remember reading that Lt Commander Neville Shute Norway RNVR ( Better known as the author, Neville Shute) who was an aircraft designer in his day job, during the war worked in a Department doing Scientific Research for the Government, investigating all sorts of oddities and desig...
by Big Pete
Mon Nov 06, 2017 1:25 am
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

If you were building a house you would have a vapour barrier between the cold hull and the warm inside of the ship to prevent humid air getting through permeable insulating material and the water vapour condensing on the inside of the hull. One way would be to coal Tar epoxy paint and then spray foa...
by Big Pete
Sun Nov 05, 2017 1:52 am
Forum: Crew Mess
Topic: There's that navy humidity reasoning again
Replies: 25
Views: 385

Re: There's that navy humidity reasoning again

Problems, problems, if they believe inadequate air con is to blame and they want to run the ships longer, why don't they just fix the air con? Mad World, Military procurement. I have just read the article (link below) about the Royal Navy cannibalising spares from one ship to another and how it actu...

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