Hi,

right now I am en route with the pmdg dc-6 but my airspeed is decreasing to 150 kn instead of 205kn. I am flying at FL150 and have AIRFOIL HEATER MASTER ON since I am flying through clouds.

BMEP is around 177.

RPM is around 2300.

Is there anything I need to to with the Superchargers? I had read you need to put them to high after 2 hours of flight. If I switch them to higher and bring back the throttle engine in the reds.

22 minutes ago, 737_800 said:

Hi,

right now I am en route with the pmdg dc-6 but my airspeed is decreasing to 150 kn instead of 205kn. I am flying at FL150 and have AIRFOIL HEATER MASTER ON since I am flying through clouds.

BMEP is around 177.

RPM is around 2300.

Is there anything I need to to with the Superchargers? I had read you need to put them to high after 2 hours of flight. If I switch them to higher and bring back the throttle engine in the reds.

I would post this on the PMDG DC6 forum for an answer. I never heard of putting superchargers on after two hours and your BMEP should't  be 177 in cruise either. 

2 minutes ago, Bobsk8 said:

I would post this on the PMDG DC6 forum for an answer. I never heard of putting superchargers on after two hours and your BMEP should't  be 177 in cruise either. 

It's was a typo, I meant to write 147bmep

What can I do, when I already have my throttle full foward and reach only a bmep of about 114.

About Superchargers: https://forum.pmdg.com/forum/main-forum/pmdg-dc-6-cloudmaster-forum/132109-question-about-supercharger-operation

I am not registered on their forums and I don't want to, therefore I asked the question here 🙂

https://forums.flightsimulator.com/t/decreased-aircraft-airspeed-in-cloud/359823

Please vote and file a ticket.

42 minutes ago, 737_800 said:

It's was a typo, I meant to write 147bmep

What can I do, when I already have my throttle full foward and reach only a bmep of about 114.

About Superchargers: https://forum.pmdg.com/forum/main-forum/pmdg-dc-6-cloudmaster-forum/132109-question-about-supercharger-operation

I am not registered on their forums and I don't want to, therefore I asked the question here 🙂

Well if you don't post their forum you will probably not get an answer to your question. 

20 minutes ago, Bobsk8 said:

Well if you don't post their forum you will probably not get an answer to your question. 

Thats fine. I somehow figured it out on my own.

16 hours ago, 737_800 said:

Thats fine. I somehow figured it out on my own.

Care to share your solution with us?

17 hours ago, themachine said:

https://forums.flightsimulator.com/t/decreased-aircraft-airspeed-in-cloud/359823

Please vote and file a ticket.

This. All aircraft do this in the sim... but you will get no end of argument from people on this. 

20 hours ago, 737_800 said:

Hi,

right now I am en route with the pmdg dc-6 but my airspeed is decreasing to 150 kn instead of 205kn. I am flying at FL150 and have AIRFOIL HEATER MASTER ON since I am flying through clouds.

BMEP is around 177.

RPM is around 2300.

Is there anything I need to to with the Superchargers? I had read you need to put them to high after 2 hours of flight. If I switch them to higher and bring back the throttle engine in the reds.

u have to flip supercharges on high regime, look for PMDG tutorials on YouTube where it is shown how to do that

20 hours ago, 737_800 said:

It's was a typo, I meant to write 147bmep

What can I do, when I already have my throttle full foward and reach only a bmep of about 114.

About Superchargers: https://forum.pmdg.com/forum/main-forum/pmdg-dc-6-cloudmaster-forum/132109-question-about-supercharger-operation

I am not registered on their forums and I don't want to, therefore I asked the question here 🙂

The thread you quote speaks of the accumulation of sludge in the clutch and clearing it every two hours of so  not the effect of the SC on speed which is ruled by altitude. The FE doesn't do it automatically, you have, as the PIC, to do it

When this happens it could be due to ice switch the carburettor heaters on. I had the same problem,but this fixed it.

25 minutes ago, Scimiter said:

When this happens it could be due to ice switch the carburettor heaters on. I had the same problem,but this fixed it.

Carb icing would cause a decrease in MP, otherwise it should be left off. 

6 hours ago, Adamski_NZ said:

Care to share your solution with us?

Don't know for sure if that had been the fix, but after I finally left the clouds (icing) I turned on the super chargers to high and that seemed to fix the issue.

2 hours ago, Bobsk8 said:

Carb icing would cause a decrease in MP, otherwise it should be left off. 

Handling the carburetors has been weird. Always I see on the Engine Stress Monitor (EFB, don't remember how they called it) that the carburetors are cold, I just increase them to hotter. However, after a while I get the message that they are stressed moderatly. If I decrease the levers to a bit to colder it's too cold, if I reverse it to hotter the message moderate stress appears.

Don't know this flight has been the second without the AFD for me, so I need to do a bit more reading, at least I landed safetely without the AFE after a 5 hours flight.

1 hour ago, 737_800 said:

Don't know for sure if that had been the fix, but after I finally left the clouds (icing) I turned on the super chargers to high and that seemed to fix the issue.

Handling the carburetors has been weird. Always I see on the Engine Stress Monitor (EFB, don't remember how they called it) that the carburetors are cold, I just increase them to hotter. However, after a while I get the message that they are stressed moderatly. If I decrease the levers to a bit to colder it's too cold, if I reverse it to hotter the message moderate stress appears.

Don't know this flight has been the second without the AFD for me, so I need to do a bit more reading, at least I landed safetely without the AFE after a 5 hours flight.

The only time high blower should be used is in a wet takeoff. And as I said, only indications of carb icing ( dropping manifold pressure) should call for carb heat. Using both of these, without some forethought is a good way to screw up your engines. 

1 hour ago, Bobsk8 said:

 And as I said, only indications of carb icing ( dropping manifold pressure) should call for carb heat. Using both of these, without some forethought is a good way to screw up your engines. 

What is your initial setup (before takeoff) for the carb heat levers? Do you push them always forword when MP drop (typically in climb) if yes, how much? There is no indication, I used to count the how many times I scroll with the scroll wheel, I am wondering if there is more elagant way of doing this.