aceridgey

P3D V4 - Incredible amounts of ground friction

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Dear all,

 

I am finding there is a huge amounts of ground friction when taxiing the 747 in v4.. After landing with say 10 tonnes of fuel, the aircraft grinds to a halt if the thrust is on idle. It takes about 35-40 percent I feel to keep the aircraft moving along.

 

Alex

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17 minutes ago, aceridgey said:

I am finding there is a huge amounts of ground friction when taxiing the 747 in v4.. After landing with say 10 tonnes of fuel, the aircraft grinds to a halt if the thrust is on idle. It takes about 35-40 percent I feel to keep the aircraft moving along.

Check your brake temps, and/or your brake calibration.

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1 minute ago, scandinavian13 said:

Check your brake temps, and/or your brake calibration.

 

All double checked, this was a autobrake 1 landing after a short circuit

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1 minute ago, aceridgey said:

All double checked, this was a autobrake 1 landing after a short circuit

You brought your sim computer across the Atlantic and just verified this, or are you back now?

It's a long time known issue that if FSUIPC isn't configured correctly, you're going to get brake drag. I'm not getting this, so I'm willing to bet that it's local.

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28 minutes ago, scandinavian13 said:

You brought your sim computer across the Atlantic and just verified this, or are you back now?

[...]

Sorry I don't understand what you mean?

 

I've just bought full fsuipc, will test again

 

EDIT

Re configued rudder pedals, fresh install of fsuipc registered.

Still getting this bahavior, if I close the thrust at landing weights, 10knots to 0 will take 5-10 seconds

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Make sure only FSUIPC is controlling the brakes. Check if brake assignments from within the P3D Controls menu are active and causing a conflict.

My MFG crosswinds are setup in FSUIPC and operating as expected - not experiencing any of the braking effects you mention.

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2 hours ago, aceridgey said:

Sorry I don't understand what you mean?

 

I've just bought full fsuipc, will test again

 

EDIT

Re configued rudder pedals, fresh install of fsuipc registered.

Still getting this bahavior, if I close the thrust at landing weights, 10knots to 0 will take 5-10 seconds

Hahaha...

It is called sarcasm.

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Oh short circuit as in electrical. I get i get. (Bravo Kyle :) )

 

Now back to the issue, still getting it with the aircraft. Any ideas?

 

Alex 

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Are you using hardware brakes by any chance? (For example I use Saitek rudder pedals which have toe brakes)

It took me a long time to realize that I had a deadzone set on my brake axes which meant every time I used the toe brakes they weren't releasing fully, so I'd start taxiing fine but once I've used the brakes or after landing I was using quite large amounts of power to keep moving. Once I set the deadzone to zero they released fully and I was able to taxi just fine.

(That was with default FS controls.)

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I have never experienced this yet. On the contrary, compared to all other add-on aircraft, when taxi-ing, I hardly have to move the throttle on my MS ForceFeedback 2 joystick as it will comfortably taxi at 30 kts without any inputs. unless ATC make me hold for traffic.

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Holy moly 30 kts!  I try to keep the taxi speeds around 20 and below 15 in turns.

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9 minutes ago, downscc said:

Holy moly 30 kts!  I try to keep the taxi speeds around 20 and below 15 in turns.

I just leave the throttle at idle and that's what's displayed in the speed tape, and from what I can see external view, she is just crawling along at a real slow pace as per what i have observed in real. The MD-11 needs a bit more monitoring though.

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15 minutes ago, vc10man said:

I just leave the throttle at idle and that's what's displayed in the speed tape,

Ah well okay..., the speed tape doesn't measure below 30-40 kts.  You should have a GS readout on the ND and some aircraft have an option for GS on the PFD but I'm not sure if the Queen is one.  Indicated airspeed requires enough ram air in the pitot tube to register airspeed, and what you measure includes any winds.  Best to use the ND GS readout for your taxi maneuvers.

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37 minutes ago, downscc said:

Best to use the ND GS readout for your taxi maneuver

Thanks, Dan. That is by far the best tip I have received, as in the past I have always watched the speed tape, and somehow it has got engrained in my grey cells!! LoL!!!

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15 hours ago, vc10man said:

Thanks, Dan. That is by far the best tip I have received, as in the past I have always watched the speed tape, and somehow it has got engrained in my grey cells!! LoL!!!

You would have got a severe written repremand from self for taxing a 747 at 30kts! At that speed your control surfaces are coming alive and if you are in gusty conditions you'll be all over the place. And possibly causing damage to engine pods and the nosewheel. Tut tut!

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22 minutes ago, vololiberista said:

You would have got a severe written repremand from self for taxing a 747 at 30kts! At that speed your control surfaces are coming alive and if you are in gusty conditions you'll be all over the place. And possibly causing damage to engine pods and the nosewheel. Tut tut!

I stand admonished and will go into that corner with a cone marked 'D' on my head:bengong::bengong:

Yesterday I did a flight and although the speed tape on the left of the PFD was displaying 30 kts,I was in fact monitoring the GS in the ND, which was around 11kts.

But for my punishment, I'll take a month of getting a bucket and mop, and off a pair of high reach steps(no cherry-picker), and swabbing the fuselage !!

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2 hours ago, vc10man said:

I stand admonished and will go into that corner with a cone marked 'D' on my head:bengong::bengong:

Yesterday I did a flight and although the speed tape on the left of the PFD was displaying 30 kts,I was in fact monitoring the GS in the ND, which was around 11kts.

But for my punishment, I'll take a month of getting a bucket and mop, and off a pair of high reach steps(no cherry-picker), and swabbing the fuselage !!

For extra punishment you have to do 15 touch and go's in a Super VC10 with a ceiling of 1,500ft. That'll teach you how to control your a/c lol. As you'll be at 1,500ft seconds after unstick!!

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Pity you cannot get your excellent work implemented into an FSX vesrion. Am eagerly awaiting to see what Just Fligt come up with.Will be a Day 1 buy for me if it outshines the First Class Simulations' version.

I saw and heard enough of those 'touch 'n goes'  when the RAF's Supers pounded past my barracks at Brize Norton, now you want me to suffer more? Have you no heart?

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3 hours ago, vc10man said:

Pity you cannot get your excellent work implemented into an FSX vesrion. Am eagerly awaiting to see what Just Fligt come up with.Will be a Day 1 buy for me if it outshines the First Class Simulations' version.

I saw and heard enough of those 'touch 'n goes'  when the RAF's Supers pounded past my barracks at Brize Norton, now you want me to suffer more? Have you no heart?

I have been informed that Just Flight will bring out a very basic Standard VC10 model which is a pity. And no I am heartless, No FADEC no FMC it takes a quite a skill to do a full power take-off and level off at 1,500ft for a circuit.

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Sorry guys this has gone massively off topic can we rein it back?

 In the real world a landing 777 would very happily accelerate with idle thrust. Yet with the pmdg you need quite a bit to keep moving. 

 

 

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1 minute ago, vololiberista said:

I have been informed that Just Flight will bring out a very basic Standard VC10 model which is a pity.

Oh, no. Drat!! That's dashed all my expectations then.

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16 minutes ago, aceridgey said:

 In the real world a landing 777 would very happily accelerate with idle thrust. Yet with the pmdg you need quite a bit to keep moving. 

The same ground friction modelling used by the PMDG 744v3 will be applied to the 777 in its next major facelift, I believe.

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2 minutes ago, downscc said:

The same ground friction modelling used by the PMDG 744v3 will be applied to the 777 in its next major facelift, I believe.

Ok, but even the 747 shows a lot of friction 

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1 minute ago, aceridgey said:

Ok, but even the 747 shows a lot of friction 

Well, that's debatable and a matter of opinion.  The B744 pilots that have tested the PMDG product don't agree, and Robert is one of them.  If you have quantifiable data i suggest you take it up with them directly via Product Support.

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