trim

[awdrgyjo]

Bought this sim last week, fantastic, only problem i have is trimming the hog. I have an X52 pro configured to Craigs profile, I press the TO trim button and after roatating I find the nose is 15degres high, the stick is almost fully forward and a lot of trim has to be applied to get her back to straight and level, even with reduced power, landing the situation is the complete opposite. I have looked at the FAQ, and reduced the sensitivity of the stick, but to no avail. any ideas, thanks in advance.

[kylania]

Sounds about right to me. I often have a ton of trim to apply after takeoff to keep her steady and level.

[Inseckt]

Perhaps you are waiting to long to rotate? I always apply some backwards stick pressure, even before rotation speed is reached, as this speed can vary from mission to mission from weight, wind etc. So by apllying said pressure, I normally don't get any "suprises" when rotating... And yes, a powerful head wind can sometimes feel like to be "throwing" you up in the air.

Edited October 31, 2011 by Inseckt

[Rongor]

The faster you get, the more lift wants to pitch your nose up if you dont react. Trimming might be such an action. That is what it's for. The Autopilot doesn't do anything else.

If you reduce speed (while climbing or reducing throttle), lift gets lost and your nose heads down.

That's the way it works.

[cichlidfan]

By all accounts, trimming the A-10 in RL is also a pain in the a##!

 

Welcome to realism!;)

Edited October 31, 2011 by cichlidfan

[Chops]

I have had a heck of a time trying to trim the A-10 as well. I have a CH Products Fighterstick USB, and whenever I use one click of my trim switch, I get pitch changes of 5 degrees or more sometimes. I have done everything I can think of to calibrate my Fighterstick both in and out of the sim, but no luck.

 

I have flown a number of real aircraft including multi-engine jets and none of them behave this way, of course. So, I am guessing that my hardware is faulty. The Fighterstick is a number of years old.

[normntaz]

I have had a heck of a time trying to trim the A-10 as well. I have a CH Products Fighterstick USB, and whenever I use one click of my trim switch, I get pitch changes of 5 degrees or more sometimes. I have done everything I can think of to calibrate my Fighterstick both in and out of the sim, but no luck.

 

I have flown a number of real aircraft including multi-engine jets and none of them behave this way, of course. So, I am guessing that my hardware is faulty. The Fighterstick is a number of years old.

 

With my nearly brand new CH Fighterstick, I get the same behavior. It seems to me that one "click" of trim is too much. It would be nice if the coarseness (?) of the trim setting could be dialed back a bit.

Edited October 31, 2011 by normntaz

[dok_rp]

I also have the X52 PRO and I am nowhere near your problems. Sure the A-10C requires much more babysitting in terms of trimming, but my ride is usually quite problem-free.

 

For TO, I disengage NWS over 50kts and give a tad of back pressure on the stick just to give the front wheel a tad bit of slack and make keeping the AC in the runway centerline easier using the rudder pedals.

 

At around 140kts I increase back pressure a tad more and 'way she goes. Depending on the loadout I'm carrying, I get a little more drag on the right or left side, so a little aileron trim is also necessary.

 

I use the curvature response on the axis config and I set it to 32. It gives a fairly smooth curvature and outputs quite a nice ride. :pilotfly:

[Chops]

For TO, I disengage NWS over 50kts and give a tad of back pressure on the stick just to give the front wheel a tad bit of slack and make keeping the AC in the runway centerline easier using the rudder pedals.

 

Just a side note - for what its worth. In a real jet you do not want to add back pressure on the stick until you reach rotation speed (Vr). Doing so will increase your takeoff roll (added drag) and affect performance numbers. Additionally, adding back pressure on the stick prior to Vr can have adverse consequences if you lose an engine before rotation, with possibly a very bad result.

 

 

With my nearly brand new CH Fighterstick, I get the same behavior. It seems to me that one "click" of trim is too much. It would be nice if the corseness (?) of the trim setting could be dialed back a bit.

 

I wonder if the development team can add a calibration function within the sim to fine-tune trim?

Edited October 31, 2011 by Chops

[Speed]

I used an X-52 in A-10 for about 7 months. If you are having difficulty trimming, either something is wrong with your stick, something is wrong with the way you are using the stick, or something is wrong with the way you are trying to trim. I used trim on the hat switch on the stick closest to your thumb, mode 1 + pinky shift (every A-10 HOTAS command was available within mode 1 or mode 1 + pinky shift). After you take off, you have to trim like crazy, but that's the way it is in real life. Just pinky shift + hat 1 in the proper direction a few times, and you're golden...

 

Basically, trim should be your most-used HOTAS command, so make sure it is easy to reach and do precisely.

[dok_rp]

Just a side note - for what its worth. In a real jet you do not want to add back pressure on the stick until you reach rotation speed (Vr). Doing so will increase your takeoff roll (added drag) and affect performance numbers. Additionally, adding back pressure on the stick prior to Vr can have adverse consequences if you lose an engine before rotation, with possibly a very bad result.

 

 

That's some very interesting info right there, Chops.

 

Before I started applying a little back pressure on the stick, and by little, I mean, a very small deflection, it was not too hard for me to get blown tires during a takeoff run with strong crosswinds, for example. And under those conditions, keeping NWS enabled over 50kts was even worse. So, while reading around here in the forums I've stumbled upon this post in which someone suggested adding a little back pressure on the stick to increase the effectiveness of the rudder pedals after NWS had been disengaged.

 

Anyways, I started doing that and not a single time after that I got a blown tire while taking off or landing, even when taking off with 115% maximum payload.

 

Your post made me wonder what do you do to keep the aircraft aligned with the runway centerline under heavy crosswinds. :smartass: Is there another procedure I'm missing? :pilotfly:Please, do share. You've got another eager to learn virtual pilot right here!!! :smartass: :pilotfly: :thumbup:

[Fakum]

For what its worth, I have the Thrustmaster Cougar, and I use Vipers profile. Trim has never been a struggle,, its smooth as silk with that profile,, little nudge and I get tad of trim,, longer hold ads just enough,, its very proportional and probably the only thing I havnt struggled with

[andysim]

trimming is something you wont notice you are doing after maybe 10 or 20 hours of flying. Its like those little corrections your body makes when you ride a bike. Eventualy it becomes a non event.

[kylania]

trimming is something you wont notice you are doing after maybe 10 or 20 hours of flying. Its like those little corrections your body makes when you ride a bike. Eventualy it becomes a non event.

 

I'm so proud that a few times I've reached to turn off autopilot and instead turned it on - I'd trimmed my Hawg so well I thought it was on autopilot!

[BTTW-DratsaB]

Hmm interesting ideas/methods.

 

One question about trimming that i was never quite clear on. When you are going to land, is there some event that causes the trim to return to neutral? Like putting the flaps to landing or lowering the gear?

 

The reason I ask is;

1: there is no trim reset as far as I can see.

2. I have never had any problems when landing even after I have been mucking about with trim, It always seems to land the same, as if something about landing preparation is neutralizing the trim automatically.

[Jona33]

Hmm interesting ideas/methods.

 

One question about trimming that i was never quite clear on. When you are going to land, is there some event that causes the trim to return to neutral? Like putting the flaps to landing or lowering the gear?

 

The reason I ask is;

1: there is no trim reset as far as I can see.

2. I have never had any problems when landing even after I have been mucking about with trim, It always seems to land the same, as if something about landing preparation is neutralizing the trim automatically.

 

1: Actually the T/O trim button neutralizes trim.

2: Don't know about it being reset with Gear down. Don't think so.

[FreeFall]

1: Actually the T/O trim button neutralizes trim.

 

Question: [LCtrl] + [T] I suppose is a Trim reset keyboard shortcut. With using this keyboard shortcut, is the result the same as with using T/O trim button? In the real A-10C, the T/O button is the only way to reset trim? Right?

 

By the way, I configured my Thrustmaster Hotas Warthog stick settings so that with [Right Pinky Paddle] + [Nose Down Trim Switch] combination my trim is reset.

[wess24m]

trimming is something you wont notice you are doing after maybe 10 or 20 hours of flying. Its like those little corrections your body makes when you ride a bike. Eventualy it becomes a non event.

 

agreed, I hardly notice it anymore.

[Ramstein]

I wasn't sure if I should start a new thread, but think I have chimed in on trim issues before.

 

I get huge trim, problems, and maybe the autopilot goes wild, without input from me.. it becomes totaally uncontrollable, and am uanble to shut off the control problem, and cannot recover no matter what I do..

 

I was watching from outside the aircrafft on external views and when my A-10C goes wild, out of control, I can see the rudders both eratically moving back and forth... without any input from my stick or pedals..

 

Since I fly other sims, and this problem does not occur with thise flight sims, and Black Shark, I can only conclude that something is wonkly with A-10C. If it were a problem with my Saitek X52 pro and Saitek pedals it would happen with everything I fly...

 

also, I do not use the twist knobs or slider in A-10C. Those are not progrmammed in A-10C. I use the saitek SST programming for my Black Shark, A-10C, FC 2.0, Il-2, etc...

 

Something takes control like a ghost in the machine, and it goes totally out of control. There has got to be soem correlation between the controls in game, and the Saitek stick getting bogus spikes and bogus inputs.. but only in A-10C. Weird.

 

Anyone else have this problem? have you watched in external view to see if the control surfaces are moving by themselves?

 

I am trying to remember if Ihad touched anything prior to these events, and if so what...

 

 

:cry::joystick:

[wickedfastball]

To the CH users, be sure you are using CH Control Manager with a good map file (the CH Hangar is an outstanding resource). Then dial down the "Character Rate" on the "Program Settings" tab to a value you are comfortable with. Mine is set to 70 and I don't have trim issues at all.