How to correctly trim the UH-1H?

[Gloom Demon]

Are there any rules or tips on how to trim the Huey? I mean some people trim her on the ground even before takeoff. I am usually trying to trim her to fly straight and level, but maybe I should trim her in a specific manner before executing certain maneuvers, like landing, for example?

Edited October 7, 2013 by Gloom Demon

[Lizzard]

Rules...hmmm just trimm how you feel comfortable. What you should do is Trim the Huey in the Hover Position for take-off and landing (Cyclic slightly down left and Rudder slightly left). During the Flight I do it like in the Shark press Trimmer - Position the Aircraft - release Trimmer. Works fine for me

[lorenzoj]

Like Lizzard said is good advice......

[Gloom Demon]

Lizzard Aha! So I was doing it all wrong! I was putting the Huey in a position I wanted it to remain at and pressed the trimmer - it really didn't work very well - I will try pressing the trimmer BEFORE positioning the aircraft - thanks!

[Lizzard]

Hi Gloom Demon,

 

yeah you have to press the Trimmer before repositioning, because if you position the Aircraft without pressing the Trimmer, the settings would overcompensate, and your Chopper goes crazy as soon as you release the Trimmer Button. And the Trimmer just sets the general "mood" for the Chopper..so you don`t have to re-trimm everytime you change direction or pitch. I set the trimmer for a nice forward flight at 80-90 Knots and leave it there most of the Time. And for the landings I pretty much just center the Trimmer...But this is something you have to play around a bit..to find the best way for you. So learning how to Trim is get in your Chopper and play with it, until you get a feel on how it works:joystick:

[Gloom Demon]

By centering the trimmer You mean turning trim off (LControl T)?

[Lizzard]

By centering the trimmer You mean turning trim off (LControl T)?

 

Hi, reseting the Trimmer works also, but most likely make the Huey jump around..I just press Trimmer - move cyclic to Center while slowing down - release Trimmer - come to a hover - land

 

Just try what works best for you

[VanjaB]

Hi Gloom Demon,

 

yeah you have to press the Trimmer before repositioning, because if you position the Aircraft without pressing the Trimmer, the settings would overcompensate, and your Chopper goes crazy as soon as you release the Trimmer Button. And the Trimmer just sets the general "mood" for the Chopper..so you don`t have to re-trimm everytime you change direction or pitch. I set the trimmer for a nice forward flight at 80-90 Knots and leave it there most of the Time. And for the landings I pretty much just center the Trimmer...But this is something you have to play around a bit..to find the best way for you. So learning how to Trim is get in your Chopper and play with it, until you get a feel on how it works:joystick:

 

Your method is the one I use in the Mi8, but it does not work for me in the Huey. I have to move the controls and then trim.

[Lizzard]

Your method is the one I use in the Mi8, but it does not work for me in the Huey. I have to move the controls and then trim.

 

whatever works best for you :)

[lorenzoj]

Your method is the one I use in the Mi8, but it does not work for me in the Huey. I have to move the controls and then trim.

 

Just for the heck of it, try reversing whatever you have set for Central Position Trimmer Mode. Some people have gotten unexpected results switched one way or the other. Can't hurt anything to try it out and see how it works for you

[jay43]

Hi, reseting the Trimmer works also, but most likely make the Huey jump around..I just press Trimmer - move cyclic to Center while slowing down - release Trimmer - come to a hover - land

 

Just try what works best for you

 

Liking that Lizard i use trim quite often and it never even dawned on me to do it this way i am always forgetting about as i come into land well a bit less these days but occasionally i do nice tip.

[Lizzard]

Liking that Lizard i use trim quite often and it never even dawned on me to do it this way i am always forgetting about as i come into land well a bit less these days but occasionally i do nice tip.

 

haha...yeah the biggest Problem is when you trimmed the Huey for a nice forward flight..land with that Trimmer settings and take-off with this settings again..the Huey becomes a very fast Lawn mower then:)

[Gloom Demon]

Does the Huey trim affect rudder? No matter what I do - it doesn't seem to get trimmed...

[Suchacz]

Does the Huey trim affect rudder?

You can choose it does/doesn't in Options/Special/UH-1H(Mi-8 also)/Rudder Trimmer :thumbup:

[Gloom Demon]

Thanks Suchacz, but realistically in real life - can the rudder be trimmed in UH-1H or Mi-8?

Edited October 8, 2013 by Gloom Demon

[Lizzard]

Thanks Suchacz, but realistically in real life - can the rudder be trimmed in UH-1H or Mi-8?

 

From the Original HUEY Manual:

 

2 32 Force Trim System Force centering devices are incorporated in the cyclic controls and directional pedal controls These devices are installed between the cyclic stick and the hydraulic servo cylinders and between the anti torque pedals and the hydraulic servo cylinder The devices furnish a force gradient or feel to the cyclic control stick and anti torque pedals A FORCE TRIM ON OFF switch is installed on the miscellaneous control panel to turn the system on or off fig 2 6 These forces can be reduced to zero by pressing and holding the force trim pushbutton switch on the cyclic stick grip or moving the force trim switch to off

 

 

So..seems like yes :joystick:

[Gloom Demon]

Strange that it is turned off by default, then - thanks :-)

[WildBillKelsoe]

so far I trim her when cruising so the rudder will reduce any left or right turning tendencies. Problem is, I have to keep my feet on the pedals and off the controls for a very long duration. I'm starting to appreciate 'Nam pilots efforts in these long flights from carriers to Vietnamese grounds.