Regarding: Autorotation idle change

[Knud Pedersen DENMARK]

Hi

Regarding: Autorotation idle

On my 9Z WC2, I use the right slider, to “turn up” the idle position, when practicing Acrobatic Autos.
When the slider is full forward, the engine idle at same rpm, as when stick is in idle position in “Norm mode”

How can I do this on the 14mz?


ChopperKnud

[Knud Pedersen DENMARK]

Hi

Sorry - maybe I did not explain me right.

I need to be able to higher the "Thottle hold Position", by using the slider on the side of the transmitter.
Thereby I can raise the throttle if practising Acrobatics Autos.

This was possible on the 9z…
Don´t anybody of you use that?????


:glasses2: ChopperKnud

[flyinfool]

I never thought of doing that.
It should be possible.
I will have to look at my 14 tonight to figure out how.
My first thought is a P-Mix with using a virtual channel with the mix only active when in hold.

[Knud Pedersen DENMARK]

Hi Anybody find a solution?

I tried to change the TRIM for HOLD, so that in NORM-flight mode it is the normally TRIM.
In HOLD it is the SLIDER, that is controlling the Throttle hold position.
But is is reversed.
And if I Change the Trim rate for HOLD (SLIDER), it also changes the RATE for NORM.trim.......
:arggg: :arggg:
Mauby I should write the problem to FUTABA - then thay maybe and the same features and the HOLÆD menu on the 9Z.....

ChopperKnud

[RCfan]

Why not create a separate "Acro-Hold" condition enabled by a slider? Then establish an appropriate throttle curve to go with it, i.e. a horizontal line slightly above idle. No need to get creative with a mix or somesuch.

[Hotwings]

Just mnove the trim function in hold to the slider, if it's backwards use the +/- keys to reverse the trim or go to the hardware page and reverse the sliders function, it takes longer to type this than to do. c-ya ron

[Knud Pedersen DENMARK]

RCFan
Maybe I should the “Acro-Hold” condition - sounds like a good idée.

I will try to see if it is possible to use the normally Trim (as used in Norm-Flight condition), Acro-hold”, and then use the Slider to offset the “idle” position (more rpm – by a Acro-Hold-Throttle-curve)

And, can I delete my “HOLD” condition, and only have the “Acro-hold”, or MUST I have the “HOLD” function in the transmitter?

ChopperKnud

[RCfan]

You don't need to have a hold condition if you don't desire it, nor enable any of the throttle hold/idle functions. Once you get your acro-hold stuff setup, sounds like that will become your hold setup.

[Knud Pedersen DENMARK]

I have now made a ”Acro-Hold” condition. :)
This condition has a almost horizontal throttle curve.
The Throttle in controlled by the “RST”-slider (And not the J3 – normally throttle stick”
It does still use the normally T3-trim.

I have INH the normally Hold function…….

It does work :D :D :glasses2:

Accept :oops: that when sliding the slider slowly down (rising the throttle idle position) in this ACRO-Hold, I can see in the Servo monitor, that the servo-position (Idle) slightly decrease the idle-position, the first 2 mm I move the slider. After that it does increase the throttle, as it should …..

I have played with the trim (T3), I think this Trim does affect the slider-Acro.Hold.Throttle-Curve….. :(
I haven´t found the solution – maybe I will – or I will live with this “Problem”
:) Maybe if I change the Throttlehold curve, I can fix it….. :D :D

Thank´s for the ideas you have given me, so that I could have my “slider-rasing- Hold idle position”
Now I can practise some backwards and inverted Autos
:D :D :glasses2: :mrgreen:

ChopperKnud

[RCfan]

Glad you got something you like. This is one of the main reasons I got this radio; there are so many ways to achieve a result. With so many options and methods for programming it, I'm never going to get bored with it. And that's just the heli portion, which I do 99% of my flying with. I haven't even been through all the menus for the other model types. So much to learn, so little time.

[SolarX]

Has anyone been able to do this using the regular throttle hold function? I was able to also do this in the 9Z and would perfer to have only one hold condition. I am practicing low pushout autos and already broke a set of landing gear doing it without a "cheater".
.

[DavidH]

http://www.littlerotors.com/articles/14mzbasics-180106/index.asp

Throttle Hold
In the Model Menu click on Throttle Hold. Now you have to decide whether you want to use Throttle Cut which means when you are approaching the start of an auto you will pull the throttle hold switch, but nothing will happen until you lower the collective stick below a preset position. Once past that position the engine will go to idle where it will remain until you switch out of throttle hold. Very few contest pilots use this option because of the inherent risks. Example: If you pull throttle hold on and for some reason abort the auto before hold is activated you may forget to turn off throttle hold and go do some maneuver. You could find yourself upside down and lowering the collective when all of the sudden the engine goes to idle. This is not a desirable thing to have happen. So most of us use Throttle Hold which can be found on the right side of the screen. Pull on the switch you have assigned for throttle hold. In the throttle hold box on the right side of the screen click on Gr. and turn it to Sngl in throttle hold condition only. Now activate throttle hold by clicking on INH. Now at the bottom of this box click on NULL beside Switch. Choose the same switch that you choose for throttle hold in the Condition Select Menu and set it’s ON position. In the same box you will see Mode. This should be set to Manual.We generally leave throttle holds idle position tied to the throttle trim so that the engine idles at the same speed in throttle hold that it does in normal mode.

Using One Of The Sliders For Throttle Trim
Some of you may dislike digital throttle trims as much as I do so here is the method for setting up one of the sliders for use as a throttle trim. Go to the Linkage Menu and click on Function. Beside CH 1 for Throttle and under Trim click on T3. At the far right hand side of the page click on Sel.H/W. Choose the slider that you want to operate throttle trim. Now on the far right hand side of the page click on Gr. for Group and change EACH flight condition to Sngl. Next flip on idle up 1 and at the top right hand corner of the screen click Null. This will deactivate the throttle trim on idle up 1. When you do this you notice that the slider that you have chosen which is highlighted in red in the display on the right hand side of the screen is no longer highlighted in red. Now go through each of the remaining idle ups and Null the throttle trim out there as well. We do not want the throttle trim working when we are in idle up. Even though the throttle trim is separated on Normal and Throttle hold they will still be tied together because we are using a mechanical trim. Click on Trim at the bottom right hand side of the page. In the center of the screen you will see Trim Rate and beside that is a number which reads 30, which is the default setting. This number determines how sensitive the trim is. I have found 12% to work good in my set up. I will explain flight trimming or adjusting the sensitivity of the trim shortly. Beside Trim Mode you will see ATL. We want to leave this in the default setting as we only want the throttle trim to work when the throttle stick is below half stick. Below that is ATL Reverse. This may have to be changed if the trim is not working at low throttle. Next check to make sure that the trim slider is working in the right direction. If not go to the system menu and click on H/W Reverse. In this page you can reverse the direction of the slider.

Adjusting Throttle Trim Slider Sensitivity
With the slider set to the middle or neutral position mechanically adjust your servo wheel and throttle pushrod so that the engine idles at this trim setting and with the throttle stick at full throttle the carborator goes wide open without binding. Also your ATVs and AFRs should ideally be set at 100% or higher if you want optimum resolution and power from the throttle servo, but in any case they should be set the same. Example: High and low throttle AFRs should be set to -100% to +100% or from -120% to +120%. You get the idea. Now with the engine mechanically set to idle at half trim adjust the Trim Rate so that when you go to high trim the engine is idling at a fast idle which will come in handy on cold days on the first start up. When you pull the trim all the way down it should kill the engine.

[SolarX]

Thanks David that was helpful.