New Cylinder AD's released by FAA
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To add to summary, anyone questioning self appointed gurus has only half a brain.
Do not rest on arms reversed with fixed baynets, which has as much to do with ECi cylinder AD as some of the posts here
Do not rest on arms reversed with fixed baynets, which has as much to do with ECi cylinder AD as some of the posts here
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Mmm nasty cut may we assume lol. Know one has said when these cly are failing yet either. 1,2 3,4 life what when how. Anyone can produce data. That's why it's published and reviewed in medicine and science. But more on that later. I'm ahead $140 on two up. Mmm what are the odds on that.
So it can be taken that creamie not in the USA and more than likely not in a wheel chair either.
Cheers
So it can be taken that creamie not in the USA and more than likely not in a wheel chair either.
Cheers
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Whats with the "shamrock" web site? Why not take the link directly off the official Lycoming website?
Anyway the fact that I am able to run LOP successfully makes a mockery of the statement that for 98% of pilots it would be very hard to get right. If I can do it anyone can.
Anyway the fact that I am able to run LOP successfully makes a mockery of the statement that for 98% of pilots it would be very hard to get right. If I can do it anyone can.
When I click on the highlighted Lycoming web site on your post yr right, it takes me nowhere?
When I go to the proper Lycoming web site yr right, and put in search SSP 700, nothing comes up?
Whats goin on yr right??
When I go to the proper Lycoming web site yr right, and put in search SSP 700, nothing comes up?
Whats goin on yr right??
Yep I just logged into shamrocks site and it is just something they have taken the liberty of making up themselves.
Mind you they have been in business since 2006 so would have a massive amount of data to back up their b/s? As the Tui ad says...yr right!
Mind you they have been in business since 2006 so would have a massive amount of data to back up their b/s? As the Tui ad says...yr right!
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Maybe it's a cheap Chinese nock off what you think ? There are no old bold pilots.
Now where is the data on these head failures that started this post before it became another free ads campaign.
Cheers
Now where is the data on these head failures that started this post before it became another free ads campaign.
Cheers
It's only real in shamrocks rotax world. Anyway i've had a good anzac day (thanks to all those who made it possible, including my father) and am now sitting down to a cold beer while I watch the Blues hopefully beat the Waratah's.
Hope you've had a good day yr right, your in one camp and i'm firmly in the other as far as LOP goes, nothing too serious though.
Hope you've had a good day yr right, your in one camp and i'm firmly in the other as far as LOP goes, nothing too serious though.
What I don’t understand is why you trolls think that your pretence is not obvious. If you are able to comprehend documents like the Lycoming one at the link in yr right’s post, you are able to comprehend other documents with big words.
From the Lycoming document at the link in yr right’s post:
But hang on a sec’… I have a POH that says:
Those recommendations are patently irreconcilable.
Given that you apparently put implicit faith in any document published by manufacturers (despite those documents being produced primarily for marketing and a*s-covering purposes), which one of the above recommendation do you support? They are both arrant nonsense to me, but you real experts will know which is the better way to protect the clys…
Standing by to be underwhelmed by the usual dullard impressions.
From the Lycoming document at the link in yr right’s post:
Lycoming recommends cruise operation at peak EGT or TIT, which is the point where the best economy range starts. …
Continuous operation is recommended at 25 degrees F or more below peak EGT only on the rich side of peak.
Given that you apparently put implicit faith in any document published by manufacturers (despite those documents being produced primarily for marketing and a*s-covering purposes), which one of the above recommendation do you support? They are both arrant nonsense to me, but you real experts will know which is the better way to protect the clys…
Standing by to be underwhelmed by the usual dullard impressions.
Of course I'm not in a wheelchair, any more than you have a learning difficulty.
The difference between us is that, on matters technical, you are being deliberately deceptive under the guise of being a dullard.
Troll
The difference between us is that, on matters technical, you are being deliberately deceptive under the guise of being a dullard.
Troll
Last edited by Creampuff; 25th Apr 2014 at 23:58. Reason: Corrected spelling of 'deceptive'.
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You are a low life sack of ****. And yes I am dyslexic. Any one that says they in a wheel chair has some sort of mental illness and those of you that knew he was are just as bad.
Me a troll no sir you are the troll. A gutless prick is what you are.
Cheers
Me a troll no sir you are the troll. A gutless prick is what you are.
Cheers
Settle down yr right...settle!
Are you by any chance in the Ag Industry or the Survey Industry?
Also going back to one of your other posts, where in Australia would you pre heat the oil and the engine before first start of the day?
Are you by any chance in the Ag Industry or the Survey Industry?
Also going back to one of your other posts, where in Australia would you pre heat the oil and the engine before first start of the day?
You are a low life sack of ****. And yes I am dyslexic. Any one that says they in a wheel chair has some sort of mental illness and those of you that knew he was are just as bad.
Me a troll no sir you are the troll. A gutless prick is what you are.
Me a troll no sir you are the troll. A gutless prick is what you are.
On matters technical, I’m not being deliberately deceptive. I have no reason to be: I am not trying to sell anything to anyone. I’m motivated only by a strong sense of mortality while flying behind a single piston engine.
You, on the hand, are being deliberately deceptive on matters technical.
Creampuff
(Defence Force Service Medal With First Clasp; Australian Service Medal (SE Asia); Australian Defence Medal)
BTW: It’s a very serious offence to falsely claim military awards, so I’ve just committed a very serious offence if my claim is false. You being big and brave and me being a gutless pr*ck, I assume you’ll take this up with the authorities.
I won’t be holding my breath.
Troll.
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the fuel in the wings at altitude was becoming super-cooled, cold-soaked to very low temps. No one routinely had flown that high before. Since they were pressurized, and rapid depressurization was not a problem for passengers, the pilots were descending rapidly from altitude to land and, guess what they did next? They followed the POH's recommendations to go full rich in the pattern before landing. This shoved a large amount of very COLD fuel onto the intake walls of the warm cylinder. This resulted in cracks forming--in the INTAKE area, NOT in the cylinders. In any case, this required cylinder replacement.
Have you worked out how little energy it takes to warm the fuel compared to the energy being routinely generated and removed from the engine via normal cooling?
What temperature did the fuel get down to in the tanks?
Lets assume -20F as a suitable definition for super cooled, and 40F as a "normal" fuel temperature. It takes more than 200x as much energy to vaporise the fuel as to raise the temperature 1 degree F. Fuel at -20F will only take about 15% more energy to vaporise than fuel at 40F and therefore provide 15% more fuel cooling (making some assumptions about boiling point).
But fuel cooling would be a tiny proportion of the total energy. The energy to raise gasoline from -20F to 40F is about 30BTU/lb. If gasoline provides 19000 BTU/lb, and about 12% of that energy is removed through the fins, then supercooled fuel might be able to account for about 1% of cooling.
If a lean mixture fixes the problem then it is the difference between a rich and lean mixture that is important. Lets say a rich mixture is about 30% more fuel, so the cylinder cracking is from increasing the cooling by 1/3 of one percent?
Even worse, this is assuming cruise fuel flows. If you reduce the power setting for descent, you reduce the fuel flow and the fuel cooling even more. However, cooling via the fins is controlled by temperature, so until the engine cools down air cooling will be providing an even larger proportion of cooling.
Supercooled fuel doesn't seem to be a plausible cause of cracking - although I am happy to have any errors in my calculations pointed out.
reducing power 1" per minute or some such insanity and starting their descents more than 100 miles out. It did nothing to address the problem where the cylinder was concerned since there was no problem with the cylinder in the first place, but did allow the fuel to warm up a bit before it was thrown agains the intake walls.
My flame suit is on in preparation to receive incoming from those with no data.
1) what was the measured temperature of the supercooled fuel and
2) how much it warmer it gets when you start your descent 100 miles out, vs. the actual descents they were doing.
Last edited by andrewr; 25th Apr 2014 at 08:11. Reason: typo