Simviation Forum - FS 2004 C-133B Take Off Troubles

Jan 2^nd, 2013 at 8:55am

ARJH Offline
Major
I Love Simviation.

Posts: 4

Hello

I'm hoping someone here can help me...

I recently downloaded Tim Conrad's C-133B package from Simviation, and I love the aircraft (these old MATS planes are favourites of mine) but I'm having real trouble getting it airborne.

I've tried various flap settings, prop settings, elevator trim settings, longer runways - nothing seems to work. The aircraft accelerates (slowly) to just over 100 knots, but no faster. If it does get airborne, it won't climb, then stalls and crashes shortly afterwards. Very occasionally, after a ground-hugging struggle involving stalls and recoveries that would have even the most hardened paratrooper paralysed with fear, it climbs high enough to pick up some speed and stabilises at about 200 knots, but mostly it just stalls and crashes. My C-124 is off happily into the wide blue yonder but my C-133 just will not fly...

Has anyone else had this problem, or am I doing something wrong (it is my first turboprop...)?

Thanks

ARJH

Back to top

IP Logged

Reply #1 - Jan 2^nd, 2013 at 3:32pm

aeroart Offline
Colonel
Fly the good-old good
ones: Convairs, DC-6,
Connie
Michigan

Gender:
Posts: 91

I tried that airplane. With one notch of flaps, it took rolling in a bunch of nose-up trim during the takeoff roll to get it off the ground. But it climbed and cruised ok.

Sorry I can't be of more help.

Art

Back to top

IP Logged

Reply #2 - Jan 2^nd, 2013 at 5:17pm

ARJH Offline
Major
I Love Simviation.

Posts: 4

Hi

I've found that cranking down the flaps at the end of the take-off roll will get it unstuck - always assuming I haven't hit a building, tree or lake first Grin

- which sounds like a similar method.

Trouble is, the extra drag then makes it a very precarious climb as it's hovering around stall speed to start with, and there's no power to spare... Sad

I know a 50s heavylift turboprop is not going to climb like a 90s jet, but at the moment I get a greater rate of climb out of the Vickers Vimy Grin

Back to top

IP Logged

Reply #3 - Jan 2^nd, 2013 at 7:09pm

BLAZE Offline
Colonel
BUILT LIKE A MACK TRUCK!
Spring City Pa. United States

Gender:
Posts: 212

There is one thing I noticed, some airplanes elevador trim wheels work opposite
of others. If your like me, you use your mouse to set the elevator trim.

It took me some time to figure this out and alot of tail dragging on takeoff. Undecided

I can't recall what Tim's C-133B elevador trim configuration is at the moment.
maybe this will help.

« Last Edit: Jan 3^rd, 2013 at 1:37am by BLAZE »

"May the wind always be at your back and the sun upon your face. And may the wings of destiny carry you aloft to dance with the stars" Cheers George!

Back to top

IP Logged

Reply #4 - Jan 2^nd, 2013 at 7:42pm

Fozzer Offline
Colonel
An elderly FS 2004 addict!
Hereford. England. EGBS.

Posts: 24861

BLAZE wrote on Jan 2^nd, 2013 at 7:09pm:

There is one thing I noticed, some airplanes elevador trim wheels work opposite
of others. If your like me, you use your mouse to set the elevator trim.

It took me some time to figure this out and alot of trail dragging on takeoff. Undecided

I can't recall what Tim's C-133B elevador trim configuration is at the moment.
maybe this will help.

Blaze has a very valid point!

The Elevator Trim Wheel on certain of my planes works in the opposite direction, and moving it the wrong way will either cause the aircraft to take off nose high, and stall, or never leave the ground!

Move the Elevator Trim Wheel and watch the elevator response with an external view.

Paul.... Cool

...!

Dell Dimension 5000 BTX Tower. Win7 Home Edition, 32 Bit. Intel Pentium 4, dual 2.8 GHz. 2.5GB RAM, nVidia GF 9500GT 1GB. SATA 500GB + 80GB. Philips 17" LCD Monitor. Micronet ADSL Modem only. Saitek Cyborg Evo Force. FS 2004 + FSX. Briggs and Stratton Petrol Lawn Mower...Motor Bikes. Gas Cooker... and lots of musical instruments!.... ...!
Yamaha MO6,MM6,DX7,DX11,DX21,DX100,MK100,EMT10,PSR400,PSS780,Roland GW-8L v2,TR505,Casio MT-205,Korg CX3v2 dual manual,+ Leslie 760,M-Audio Prokeys88,KeyRig,Cubase,Keyfax4,Guitars,Orchestral,Baroque,Renaissance,Medieval Instruments.

Back to top

IP Logged

Reply #5 - Jan 2^nd, 2013 at 9:05pm

BLAZE Offline
Colonel
BUILT LIKE A MACK TRUCK!
Spring City Pa. United States

Gender:
Posts: 212

Thanks Paul Smiley

Also something else to keep in mind ARJH . Make sure your props are at full pitch on
takeoff.

I don't know how long you have been flying. I figured I would tell ya this cause this
one had me stumped for a while in the early days of F-Simming. Undecided

I would tell ya what keys to use but I changed alot of my keyboard cammands and
don't remember the defaults off hand. Embarrassed

..

Good Luck

"May the wind always be at your back and the sun upon your face. And may the wings of destiny carry you aloft to dance with the stars" Cheers George!

Back to top

IP Logged

Reply #6 - Jan 2^nd, 2013 at 9:55pm

DaveSims Offline
Colonel
Clear Lake, Iowa

Gender:
Posts: 2453

Have you checked the loadout? Occasionally I have downloaded a model that by default was WAY over loaded and couldn't get off the ground.

I have also encountered the odd model that must have a glitch in its .air config, because no matter what they would exhibit the behavior you are talking about. Never have figured out a fix.

Dave

www.flymcw.com

Back to top

IP Logged

Reply #7 - Jan 3^rd, 2013 at 2:57pm

aeroart Offline
Colonel
Fly the good-old good
ones: Convairs, DC-6,
Connie
Michigan

Gender:
Posts: 91

Hello again ARJH,

I was taking a closer look at the features of Tim Conrad's C-133B. Don't be offended by this question, but are you sure that the clamshell doors are closed at takeoff? That door hanging down looks like a big speedbrake. In activating that feature, I found that it doesn't always work every time, either up or down.

Just one more thing. An earlier suggestion that the props be at "full pitch" for takeoff might be misinterpreted. Make sure the props are set at low pitch for takeoff. That will give you full power.

My complaint with this model is that the flight instruments are not lit at night. Even increasing the Night and Luminous values in the [Color] section of panel.cfg has no effect.

Art

Back to top

IP Logged

Reply #8 - Jan 3^rd, 2013 at 4:33pm

ARJH Offline
Major
I Love Simviation.

Posts: 4

Hi all,

Thanks for the suggestions

Art - I hadn't thought about the clamshell doors. I tried opening them a couple of times (just because it seemed a fun thing to do) but it didn't seem to work, and I wasn't sure about the key combination; should shift-e-2 be pressed the same way as you would ctrl-alt-del? That said, I've restarted multiple times without trying the clamshells, and the doors look shut on Spot Plane, so I don't think it's that...

Thanks for the tip about the prop pitch - I've always liked the vintage planes or first/second generation jets and this happens to be my first crack at a turbo prop

I'll have another go at the prop settings when I get a chance...

Cheers

ARJH

Back to top

IP Logged

Reply #9 - Jan 3^rd, 2013 at 8:15pm

BLAZE Offline
Colonel
BUILT LIKE A MACK TRUCK!
Spring City Pa. United States

Gender:
Posts: 212

aeroart wrote on Jan 3^rd, 2013 at 2:57pm:

Hello again ARJH

Just one more thing. An earlier suggestion that the props be at "full pitch" for takeoff might be misinterpreted. Make sure the props are set at low pitch for takeoff. That will give you full power.

I don't know man, I'm not a pilot or an expert for that matter, but I don't think it's a good
idea to back off on the pitch 'to far' for takeoff if ya do cause You could over rev the engines and cause a cat.failure.

Just look at the Constellation series from Manfred Jahn, thats pretty darn realistic. If you notice (while at the flight Engineers panel) If you go to full pitch the warning lights will light up. then just back off to about 98% or 97% I think, the warning lights will go out.

Of course the above statement is going by the "dummy lights", you could and really should
go by the "Check & Ref file" when available. Smiley

Ahh.. I'm probably wrong, I don't know. I do know one thing for sure though, when I didn't
know anything about 'Prop-Pitch' and as a result didn't give it any, I basically had a car with really cool fans on it. Grin

GOD!.. I love this stuff. Grin

"May the wind always be at your back and the sun upon your face. And may the wings of destiny carry you aloft to dance with the stars" Cheers George!

Back to top

IP Logged

Reply #10 - Jan 4^th, 2013 at 10:39am

ARJH Offline
Major
I Love Simviation.

Posts: 4

Hello all,

I'm currently sitting at the parking gate a much happier soul

It seems to have been a combination of things (as aviation screw-ups usually are) - I hadn't nailed the prop pitch setting, so thanks for the tips on that

Also, the autopilot seems to have a tendency to turn itself back on, and as I didn't do the take off rolls with the throttle window open I didn't realise that it had reset the elevator trim without telling me Grin

The same tendency has just caused me to have to go around; I clicked off the altitude hold mode to begin final approach, realised I was way above the glide slope, and then saw that the altitude hold mode was back on Angry

Second time round, I clicked it off, saw it come back on again a few seconds later, clicked it off again, and then landed safely

Oh, and I figured out the clamshell doors too - those are very cool Grin

Thanks everyone

ARJH

Back to top

IP Logged

	Search the archive: