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by Big Pete
Fri Sep 22, 2017 10:13 am
Forum: The Workshop
Topic: Engine performance in varying ambient temperatures
Replies: 8
Views: 226

Re: Engine performance in varying ambient temperatures

Hi J-N, The Old way was to calculate Indicated Horsepower, by using a mechanical indicator card, this worked like a recording barograph to record cylinder pressure for each individual cylinder, and the drum was rotated by a piece of string linked to the camshaft so that the Indicator card drew a gra...
by Big Pete
Thu Sep 21, 2017 4:09 am
Forum: Crew Mess
Topic: Hurricanes
Replies: 7
Views: 207

Hurricanes

This might not be the best place to post this, but I want to "vent" and maybe get some feedback on ideas below: Like many people I have been shocked by the lack of an organised response to the recent series of Hurricanes in the Caribbean. Shipping bottled water from the UK to Gibraltar, tr...
by Big Pete
Thu Sep 21, 2017 12:09 am
Forum: The Workshop
Topic: Engine performance in varying ambient temperatures
Replies: 8
Views: 226

Re: Engine performance in varying ambient temperatures

Hi Jeroen, Welcome t the site. I am not an Academic so I can't point you in the direction of Academic papers on this. However, the main factor for the engine is the air temperature at the air intake to the engine. The colder and drier the air and the higher the air pressure the better. I remember re...
by Big Pete
Tue Sep 05, 2017 12:59 am
Forum: Crew Mess
Topic: USS Indianapolis and other random USN topics
Replies: 16
Views: 459

Re: USS Indianapolis and other random USN topics

This is a very big issue, warships are supposedly designed to survive and keep fighting after severe action damage, so unless springfield towing are going to send a fleet of tow trucks to follow the fleet around the south china seas to help, there is a major design fault here. Or were the ships expe...
by Big Pete
Fri Sep 01, 2017 10:31 am
Forum: Crew Mess
Topic: USS Indianapolis and other random USN topics
Replies: 16
Views: 459

Re: USS Indianapolis and other random USN topics

Me neither, never had a collision in 45 years at Sea, on most of that time on ships much less manoeuvrable than a destroyer and fitted with a Radar system costing a a few Hundred Dollars, rather than millions for AEGIS radar systems. " The price of Admiralty is eternal vigilance" Still tru...
by Big Pete
Wed Aug 30, 2017 9:00 am
Forum: The Workshop
Topic: Fuel Additives
Replies: 4
Views: 127

Re: Fuel Additives

I have now read the links and they claim that the product is a"Surfactant and Dispersant" I take this to mean that it is emulsifying any water in the fuel with the Fuel, and dispersing both the emulsion and any solid deposits or sludge evenly throughout the fuel, so that the dirt and water...
by Big Pete
Tue Aug 29, 2017 11:40 pm
Forum: The Workshop
Topic: Fuel Additives
Replies: 4
Views: 127

Re: Fuel Additives

The Cetane No is basically the reciprocal of the Octane No on another Scale. The Cetane no of the fuel depends on the Chemical constituents of the fuel. Fundamentally it is a measure of the compression Ratio/ compression Temperature you require for a special Diesel Test Engine to run on the fuel wit...
by Big Pete
Sat Aug 26, 2017 12:49 am
Forum: Crew Mess
Topic: USS Indianapolis and other random USN topics
Replies: 16
Views: 459

Re: USS Indianapolis wreck discovered

There was a Class of British Destroyers a generation ago, that the Politicians became involved with designing, they took out a 20 foot length of the centre section to save construction costs, after a few years the ships didn't have the internal volume or Displacement to fit all the upgrades required...
by Big Pete
Wed Aug 23, 2017 10:12 am
Forum: Crew Mess
Topic: USS Indianapolis and other random USN topics
Replies: 16
Views: 459

Re: USS Indianapolis wreck discovered

Well JK, Call me an old cynic if you like, but the USN sacked several Officers and took disciplinary action against others after their other Destroyer collided in the Sea of Japan. I suspect there is high probability that the OOW was updating his Facebook profile, or something similar, at the time o...
by Big Pete
Mon Aug 07, 2017 12:49 am
Forum: Crew Mess
Topic: Mouldy Navy
Replies: 21
Views: 475

Re: Mouldy Navy

Not to mention the Fat Government Pension when you go, you don't get company pensions any more if you go to Sea.
by Big Pete
Sun Aug 06, 2017 12:07 pm
Forum: Crew Mess
Topic: Doom and Gloom
Replies: 10
Views: 307

Re: Doom and Gloom

Hi Sea Rover, I don't know what your standards are in Canada!! I have sailed with a few Canadian Deck Officers over the years but no Engineers, I would never draw conclusions about Natuional Standards on the basis of a handful of individuals. Many of the Europeans go to Uni and get a Degree In Nauti...
by Big Pete
Sun Aug 06, 2017 1:09 am
Forum: Crew Mess
Topic: Doom and Gloom
Replies: 10
Views: 307

Re: Doom and Gloom

Sea Rover, I didn't comment here because I was born and live in England and did all my studying and certification on this side of the pond, therefore I do not feel qualified to discuss changes in Canadian Rules that I do not know anything about and do not effect me, especially since I was made redun...
by Big Pete
Sat Aug 05, 2017 12:04 am
Forum: Crew Mess
Topic: Mouldy Navy
Replies: 21
Views: 475

Re: Mouldy Navy

And counting......
Have a great party when you go.
by Big Pete
Thu Aug 03, 2017 7:54 am
Forum: The Workshop
Topic: Common Rail Engine 48/60 cr
Replies: 19
Views: 681

Re: Common Rail Engine 48/60 cr

Interesting that I interpreted the original report of "Not to mention while not part of the CR fuel system every cylinder on both engines had cracked land rings" as being the Entablature Lands that the liner sits on, Merlyn interprets that as "We also had several engines with piston d...
by Big Pete
Tue Aug 01, 2017 8:21 am
Forum: The Workshop
Topic: Common Rail Engine 48/60 cr
Replies: 19
Views: 681

Re: Common Rail Engine 48/60 cr

Glad to help, it sounds strange to have finer filtration before the fuel module than after! After all the filters before the fuel module are to protect the fuel booster pumps which are pretty tough when compared to the fuel injection pumps that are protected by the engine filters. Very hard to get C...

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