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by Big Pete
Thu Dec 14, 2017 1:17 am
Forum: The Workshop
Topic: increasing fuel efficiency of engine
Replies: 27
Views: 578

Re: increasing fuel efficiency of engine

No problem Serguei, I wish to help young Engineers understand Engineering. By Gas Lawn Mower I assume you mean Gas as an abbreviation for Gasoline, North American usage. On this side of the Pon we call the same fuel Petroleum Spirit or Petrol for short. Not Liquid Natural Gas, Butane or something si...
by Big Pete
Thu Dec 14, 2017 1:09 am
Forum: Crew Mess
Topic: Final Report on the El Faro sinking
Replies: 2
Views: 154

Re: Final Report on the El Faro sinking

Very interesting Video raises several points. Sending Weather information ONLY to the Captain's Office computer is seriously flawed, the Captain has to sleep!!! The Officers of the watch on the Bridge have primary responsibility for the Safe Navigation of the ship, 24/7, including monitoring the wea...
by Big Pete
Thu Dec 14, 2017 12:40 am
Forum: Crew Mess
Topic: Merlyn Birthday
Replies: 8
Views: 70

Re: Merlyn Birthday

Happy Birthday Merlyn,
Hope you had a great party.
Big Pete
by Big Pete
Tue Dec 12, 2017 6:44 am
Forum: Crew Mess
Topic: Taxes
Replies: 3
Views: 55

Re: Taxes

Nothing in life is certain, except Death and Taxes, they will get you one way or another, Governments all have one thing in common, they think that they can spend the money we have earned better than we can.
by Big Pete
Thu Dec 07, 2017 12:30 pm
Forum: The Workshop
Topic: increasing fuel efficiency of engine
Replies: 27
Views: 578

Re: increasing fuel efficiency of engine

Hi Serguei, This is a Marine Engineering website and I don't claim to know much about Road vehicles, I have only worked on Marine Diesel Engines. Petrol Engines are notoriously inefficient even if run on High Octane petrol to enable higher compression ratios and peak pressures to be used. The Peak T...
by Big Pete
Mon Dec 04, 2017 12:19 pm
Forum: The Workshop
Topic: increasing fuel efficiency of engine
Replies: 27
Views: 578

Re: increasing fuel efficiency of engine

From your first Post: - [ [i]i]"a)The process of the combustion of the mixture begins before the piston arrives at the “top dead point” and it means that the movement of the piston to the ”top dead point” is counteracted by the total pressure: the sum of the degree of the compression, and the i...
by Big Pete
Mon Nov 27, 2017 1:31 am
Forum: The Workshop
Topic: increasing fuel efficiency of engine
Replies: 27
Views: 578

Re: increasing fuel efficiency of engine

Serguie you are obviously a keen young Engineer who is looking for good ideas everywhere and trying to put them together, so I congratulate you on being interested in the subject and spending time researching it. Your English is much better than most English peoples foreign Languages and you are obv...
by Big Pete
Wed Nov 22, 2017 9:22 am
Forum: The Workshop
Topic: increasing fuel efficiency of engine
Replies: 27
Views: 578

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: 27
Views: 578

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: 27
Views: 578

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: 9
Views: 1297

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: 9
Views: 1297

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: 507

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: 507

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: 507

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

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