hectorp

Hydraulic System

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15 hours ago, AAC47 said:

 I tried to reproduce your flight and all marked RED are something strange GREEN OK

       I cant understand why You don't use EXT PWR and EXT AIR in proper way

       When I loaded the scenario all engines acted normal

       I suggest You to follow valid check-list

I normally use EXT PWR  while in the ground to save the plane Battery. This is normal. 

There is no way you can start the engines without EXT AIR (Shift+Q).

To Align the INS you must run the Cabin Compressors for cooling purposes.

With the Cabin compressors on you don't have enough air pressure to start the engines. This insures that you cannot run the engines before INS is Aligned.

After INS aligned Cabin compressors are turned on and then there is enough air pressure to start the engines.

When I load my Scenario all engines are running with fuel levers ON no matter I saved with engines off and all 4 fuel levers OFF. You are lucky.

I am open to suggestions because I like this plane and no matter will keep using it.

I thought I was using EXT PWR and EXT AIR in the proper way.

I thought I was reading the valid check-list. If there is another one please share.

I had the idea to run a video but cannot make FRAPS work in Windows 10 since I wanted to share how things are in a visual format. Will keep trying.

I appreciate all the inputs and help from you guys. 

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I only have Manual for Series -62 but there the INS is cooled by RADIO RACK BLOWER so You dont need to use Cabin Compressors. Can You help me to locate the instruction to use Cabin Compressors in DC-8-50 for INS cooling...?

I made a test without External Power and no problem to load INS

Regading Loading of saved game I get the same result as You so You have a point there

Regarding Checklist I couldn't follow Your action until I found out that You made a Battery start and that is not so common...

Some places have External air from Pressure Tank but it is not normal not to have External Power.

Regarding RADIO RACK BLOWER in Series -50  I am only 75% sure that it is running on Battery Power so I might be wrong

The test of RADIO RACK O'HEAT light doesn't work without External Power in this plane...in -62  it is powered by DC BUS -1

I think the best is at every time use NORMAL OPERATION with External Power and External Air for start-up and avoid Battery-Start  as The Checklist  for engine-start without External power involves operation of CROSSFEED-VALVE not operational in this plane.....

 

 

 

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22 hours ago, Michael2 said:

Following the checklists is definitely recommended.

 

I tried saving a flight with the engines off.  Strangely, when I load the flight, the engines are always running.  However, it did mess up the hydraulics.  So I would suggest for the time being -- do not save flights with the engines off.  If you want to start from cold and dark, load the aircraft running and then use the cold and dark button on the loader panel to shut the airplane down. 

 

FYI - it is not creating an .asc file when I save a flight with the engines off.  I'll have to test that again just to make sure, but that is what I've found.

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15 minutes ago, Mace_RB said:

FYI - it is not creating an .asc file when I save a flight with the engines off.  I'll have to test that again just to make sure, but that is what I've found.

 

I'm not seeing that. Engines on or off shouldn't affect the operation of the ASC.dll.  And there is nothing saved by it that determines whether the engines are running (unless you turn the tank selectors off on the fuel panel).  The fuel shutoff switches are default variables that the sim controls. 

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1 hour ago, AAC47 said:

The test of RADIO RACK O'HEAT light doesn't work without External Power in this plane...in -62  it is powered by DC BUS -1

 

It's DC Bus 1 in this aircraft as well.  The battery bus is a separate bus and won't power that light. 

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On 5/29/2018 at 12:37 PM, Michael2 said:

 

I'm not seeing that. Engines on or off shouldn't affect the operation of the ASC.dll.  And there is nothing saved by it that determines whether the engines are running (unless you turn the tank selectors off on the fuel panel).  The fuel shutoff switches are default variables that the sim controls. 

 

I figured out why I had no .asc file.  I had wrongly commented out the asc.dll.

 

Even so, if I save a flight cold and dark, then load the flight, it loads with engines running.

 

I attach the save files (fxml, wx, and asc) for your reference.

dc8 test3.fxml

dc8 test3.wx

dc8 test3.asc

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I haven't been able to determine yet why cold and dark saved flights save with the engines running.  The problem is very easy to avoid -- don't save flights as cold and dark. Load the aircraft running and if you want a cold and dark state, press the button on the loader. 

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On 6/4/2018 at 5:28 PM, Michael2 said:

I haven't been able to determine yet why cold and dark saved flights save with the engines running.  The problem is very easy to avoid -- don't save flights as cold and dark. Load the aircraft running and if you want a cold and dark state, press the button on the loader. 

 

I never save flights cold and dark.  I was just trying to help the original poster (hectorp?).  And I was able to reproduce his issue, giving you another data point.

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Final:

1. I save the Scenario with engines off. EXT Batt. Check Failures Panel. Clean

2. Start the Scenario and find:

            a. fuel handles on

            b. engines not running but after 20 to 30 seconds they start and all systems working. Failures panel OK. Hyd Pumps working

3. Fuel handles OFF, engines down. All systems down. 

4. Check Failures Panel and find the three Hydraulic pumps failed.

 

This is the problem and at this time i gave up.

What  I do now and works::

1. Start the scenario

2. Set fuel handles off

3. Set PWR EXT and EXT Air.

4. follow the rest of the check list to prep the flight

5. After everything is okay, turn the engines 3,4,2,1

6. Go to Failures Panel and RESET it. Hyd Pumps start working.

7. Take off.

 

As said before, I will not touch this topic again. Appreciate all your effort in fixing it but I guess this is a problem that will be fixed in the near future.

Meanwhile, I enjoy flying this machine.

Still some problems with the INS but working on it. Some times it works, sometimes it does not.

 

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I don't really understand why you need to save the scenario with engines off.  That is what causes the problem.  Wouldn't it be easier to have the aircraft load with engines running and then use the cold and dark button? Is it an immersion thing? 

 

It's not my intent to be critical; I just want to understand your perspective.

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Hi Michael,

First  of all, in no way I consider help as a criticism. On the contrary, I acknowledge when people takes their time to offer solutions. This is the main spirit of forums. 

Now, going to the problem.

For me, as a former pilot, it is not right to park the plane, apply the parking brakes and not shutting the engines. It is against a pilot logic. 

However, I followed you recommendation. I left the engines running and open the C&D window, click on the Cold & Dark key and saved the scenario. I even shut the simulator and the computer.

When I opened the scenario the same thing happened. I wanted to record it with Fraps but I cannot make it work in Windows 10 no matter what I do. 

At the end, I will do as mentioned above and enjoy this wonderful machine.

BTW, I just saw Aerosoft releasing a version that includes FSX. Do I need to buy to play it in FSX?

Best Regards

 

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On 6/18/2018 at 4:58 AM, hectorp said:

BTW, I just saw Aerosoft releasing a version that includes FSX. Do I need to buy to play it in FSX?

 

No, all versions included with one purchase. 

On 6/18/2018 at 4:58 AM, hectorp said:

However, I followed you recommendation. I left the engines running and open the C&D window, click on the Cold & Dark key and saved the scenario. I even shut the simulator and the computer.

When I opened the scenario the same thing happened.

 

My recommendation is not to save a flight with the engines off.  I understand wanting to shut everything down after you get to the gate, but I'm not sure why you need to save the flight that way.  Just start a new one and then use the cold and dark button if you want to begin the flight in that state. 

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Hi

I recently encountered the problems discussed here.
So in conclusion, loading a saved flight will have the Hyd Pump failure Failed. And by unchecking them everything will work just as when you're creating a new flight.
(At least these are my conditions)

I also assume this will be fixed in a coming release.

Regards
Mats Sederholm
 
FSX
DC-8 ver 1.3
WIN 10

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On 6/30/2018 at 6:56 AM, mseder said:

So in conclusion, loading a saved flight will have the Hyd Pump failure Failed. And by unchecking them everything will work just as when you're creating a new flight.

  

This is not what I have experienced.  I have loaded saved flights probably more than 100 times without any problem with the hydraulic system.  I can only reproduce the problem if I save a flight after turning off the engines.  

 

Although I cannot see any reason why anyone needs to do that (save a flight with the engines off) I will look for a solution.  Furthermore, saving a flight with engines off is pointless now to begin with, because the sim does not seem to save the engine off state in the first place. 

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Hi

Late reply, anyway:

" I can only reproduce the problem if I save a flight after turning off the engines.  "
Yes I always close the engines after a flight !? And also I always loads a saved flight. 
So this might very well be the key trigger.

I also noticed that even if I uncheck the hyd pumps in the failure panel, they get checked again during the start up. Sometimes more than once.
 
Mats Sederholm

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