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UltimateDelta
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What Is It W/ Posky 763 In Flight?! Aargh!

Mon Jul 26, 2010 6:28 pm

My my...where to begin...

So today I was going to attempt my first long haul in FSX in real time, with OGG-HNL in a Hawaiian 767-300. As I was climbing to my cruising altitude of 34,000 feet, and as I passed through about 22,000, the plane started pitching up at about 15 degrees and was steadily losing speed before I hit slew mode to avoid disaster. I sent it up to 35,000 feet to see if I could get it to descend and level off. The first 500 feet or so went OK, but then it pitched back up and basically fell back to 32,000 and 235 knots. It did this four more times before I quit out of anger. BTW, I'm using the FDEs from the SGA DC-10-30 because the ones that came with it have proven to be extremely problematic (it used to require reaching 220 knots before you could even think about trying to rotate). I'm willing to give it one more try (with the ones from the VL L-1011) before it is permanently banished from my computer. Anybody have any idea why this is happening? I haven't flown it in about six months because it's never any fun to deal with this.      

Thanks in advance for any help you have to offer. This plane needs it.

(Strangely, this is never a problem with the 767-200. WTF)
(Oh, and I haven't bothered to ask at POSKY because the last time I had a problem with something they were incredibly unhelpful)

[Edited 2010-07-26 11:31:34]
Midwest Airlines- 1984-2010
 
BMI727
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Tue Jul 27, 2010 12:16 am

Quoting UltimateDelta (Thread starter):
(Oh, and I haven't bothered to ask at POSKY because the last time I had a problem with something they were incredibly unhelpful

Yeah, I was going to say don't bother asking them because they might hunt you down and disembowel you.
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seattle
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Tue Jul 27, 2010 1:57 am

They do get a bit sensitive over there. they make great visual models but not a single plane they've made flies or taxis (744) the way they should. have you tried looking into the -pitch_high_alt- under autopilot in the air file. i had that problem with the 77w after hitting cruise would turn into a rollercoaster. IIRC the high alt response on the autopilot was set waaaaaay too low. try compairing to a plane you have thhat works the way you like it to. i can't make any promises for yours but my 763 climbs and cruises alot better now. still fine tuning the warp speed needed for liftoff though.
 
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Tue Jul 27, 2010 3:03 am

Quoting UltimateDelta (Thread starter):
So today I was going to attempt my first long haul in FSX in real time, with OGG-HNL in a Hawaiian 767-300. As I was climbing to my cruising altitude of 34,000 feet, and as I passed through about 22,000, the plane started pitching up at about 15 degrees and was steadily losing speed before I hit slew mode to avoid disaster. I sent it up to 35,000 feet to see if I could get it to descend and level off. The first 500 feet or so went OK, but then it pitched back up and basically fell back to 32,000 and 235 knots. It did this four more times before I quit out of anger. BTW, I'm using the FDEs from the SGA DC-10-30 because the ones that came with it have proven to be extremely problematic (it used to require reaching 220 knots before you could even think about trying to rotate). I'm willing to give it one more try (with the ones from the VL L-1011) before it is permanently banished from my computer
. Anybody have any idea why this is happening? I haven't flown it in about six months because it's never any fun to deal with this.

Double-check with POSKY downloads to see if there is an FDE update. Perhaps you were flying with a FS9 FDE?
 
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Tue Jul 27, 2010 3:19 am

Quoting phatfarmlines (Reply 3):
Perhaps you were flying with a FS9 FDE?

It may have been since they don't support FSX, and never miss an opportunity to tell people that.

Quoting seattle (Reply 2):
i had that problem with the 77w after hitting cruise would turn into a rollercoaster.

Well, my 77W, and 77L to a lesser extent, cruises at about 60% N1 and the autothrottle always busts through the set speed before cutting the throttles all the way to idle and nearly stalling. It eventually gets it right...just in time to do the trip while burning maybe half the amount of fuel listed on the FSX flight plan. (But then the default planes all burn significantly more)

The 763 and 757 I got seem to work alright though, except for a lighting bug on the 763 (the beacon lightens and darkens the whole plane, giving the entire thing a flashing effect) but I think I can fix that.
Why do Aerospace Engineering students have to turn things in on time?
 
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United_fan
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Tue Jul 27, 2010 1:10 pm

Quoting UltimateDelta (Thread starter):
So today I was going to attempt my first long haul in FSX in real time, with OGG-HNL in a Hawaiian 767-300. As I was climbing to my cruising altitude of 34,000 feet

Did you really climb to FL340 to fly OGG-HNL?
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UltimateDelta
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Tue Jul 27, 2010 7:01 pm

Quoting United_fan (Reply 5):
Did you really climb to FL340 to fly OGG-HNL?

Haha, no, I meant to say OGG-LAX. I guess I was thinking HNL because it was originally going to be HNL-LAX but I switched to OGG at the last minute.

Quoting seattle (Reply 2):
have you tried looking into the -pitch_high_alt- under autopilot in the air file. i had that problem with the 77w after hitting cruise would turn into a rollercoaster. IIRC the high alt response on the autopilot was set waaaaaay too low. try compairing to a plane you have thhat works the way you like it to. i can't make any promises for yours but my 763 climbs and cruises alot better now

Here's what it says:

max_pitch_velocity_hi_alt=1.500000
max_pitch_velocity_hi_alt_breakpoint=28000.000000

What's a more reasonable setting? Thanks so much.

[Edited 2010-07-27 12:04:47]
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seattle
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Wed Jul 28, 2010 1:59 am

Quoting UltimateDelta (Reply 6):
max_pitch_velocity_hi_alt=1.500000

now remember that number just in case this has un-wanted effect but change to 0.100000. this should slow down the response time for the autopilot. if it does what the posky embraer does where it just passes the cruise setting all together then raise this number until about where you want it. maybe 0.5- 0.9 - 1.2? this is what i did with my 767 and it seems to work fine but i'm no computer wizzard so i cant make any garantees. plus i'm working with fs9 and haven't even attempted fsx again since first install when it came out so i'm not sure how different the two act.

[Edited 2010-07-27 19:02:01]
 
seattle
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Wed Jul 28, 2010 2:08 am

Quoting UltimateDelta (Thread starter):
I'm using the FDEs from the SGA DC-10-30

i just realized that in order to do this you need the updated fde for the sga dc-10 since none of them will maintain speed during climb and eventually stall. and if you do manage to get them to any decent cruise height they will stall there too. i cheated on mine and upped the thrust to 60,300 which made the plane easier to handle
 
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Aaron747
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Thu Jul 29, 2010 7:45 pm

Quoting UltimateDelta (Thread starter):
(Oh, and I haven't bothered to ask at POSKY because the last time I had a problem with something they were incredibly unhelpful)

They don't like people asking because the same questions have been asked repeatedly for years. There is a knowledge base section in the forum for each aircraft they have put out with solutions to all of the questions that have been asked before. There are no 767 FSX FDEs but the last batch of 763 FDE updates were very good. There is absolutely no need to accelerate to 220 knots to get off the ground - just make sure you're properly trimmed.

Quoting seattle (Reply 2):
i had that problem with the 77w after hitting cruise would turn into a rollercoaster

Funny I've only had the previously mentioned autothrottle issue, whish is pretty easy to fix if one knows their way around an aircraft.cfg file.
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DAL7e7
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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Fri Jul 30, 2010 8:25 pm

Quoting UltimateDelta (Thread starter):
(it used to require reaching 220 knots before you could even think about trying to rotate).

Check the trim for this. I had the problem in FS9 of the 752 and 762 not rotating until well over 180 KIAS was reached. Put a couple of notches of nose-up trim and now it works beautifully with rotations of closer to 150 KIAS.

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RE: What Is It W/ Posky 763 In Flight?! Aargh!

Sat Jul 31, 2010 3:30 am

Quoting DAL7e7 (Reply 10):
Check the trim for this

Yeah, usually I go to about 2.5 degress nose up for the 767/757.
Why do Aerospace Engineering students have to turn things in on time?

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