[jhb] Re: CH Yoke Query
- From: "Fossil" <fossil@xxxxxxx>
- To: <jhb@xxxxxxxxxxxxx>
- Date: Sun, 19 Jul 2009 04:17:54 +0100
Be careful using rudder trim because there are no keys to auto centre once
applied - at least in FS9. Once you apply rudder trim it's a pain to get it
zeroed again.
It does indeed look like a stick problem so the next thing to check is that
calibration hasn't wandered.
bones
bones@xxxxxxx
-----Original Message-----
From: jhb-bounce@xxxxxxxxxxxxx [mailto:jhb-bounce@xxxxxxxxxxxxx] On Behalf
Of Gerry Winskill
Sent: 18 July 2009 23:06
To: jhb@xxxxxxxxxxxxx
Subject: [jhb] Re: CH Yoke Query
It wants to roll to the right but can be held level by appication of a
small, and constant, amount of left aileron. On autopilot it holds a
steady heading, with the AI showing just a minute deviation to the
right. The stick can be waggled, slightly, without a significant change.
Initiated rolls are a bit quicker to the right than to the left.
I checked fuel, because I've had similar effects, in the past, from
unbalanced fuel. This time it happens with full tanks. The TB21GT and
TB200GT both roll right despite just having a 170 lb (American?) pilot
and no passenger. So, any swing should really be to the right.
It's also present, in exactly the same way, if I fly the PC12. So, it's
control, rather than aircraft, related?
Although I can trim the wings level by applying left rudder trim, as
expected, it then makes a slow flat turn to the left.
I must take a close look at aileron trim. Although I've allocated a
couple of keys to it they seem to be having no effect.
Gerry Winskill
Fossil wrote:
> OK. With 25% you shouldn't have the stick/yoke affecting roll rates at
all.
>
> If you feel the aircraft rolling does any touch on the yoke affect the
roll
> rate? If you can waggle the yoke slightly and see no change in aircraft
> behaviour then it would suggest to null zone is working for the yoke. If
so
> look at other input devices like the mouse or touchpad which can also
affect
> handling.
>
> Also check for other obvious effects like a fuel misbalance. Running tanks
> down on one side can have a big effect on roll rates.
>
> bones
> bones@xxxxxxx
>
>
> -----Original Message-----
> From: jhb-bounce@xxxxxxxxxxxxx [mailto:jhb-bounce@xxxxxxxxxxxxx] On Behalf
> Of Gerry Winskill
> Sent: 18 July 2009 17:03
> To: jhb@xxxxxxxxxxxxx
> Subject: [jhb] Re: CH Yoke Query
>
> Not that. It was set at about 25%. I increased to 50% and that slowed
> the start of the unwanted bank but didn't remove it.
>
> Gerry Winskill
>
> Fossil wrote:
>> Have you set your null zone too tight?
>>
>> bones
>> bones@xxxxxxx
>>
>> -----Original Message-----
>> From: jhb-bounce@xxxxxxxxxxxxx [mailto:jhb-bounce@xxxxxxxxxxxxx] On
Behalf
>> Of Gerry Winskill
>> Sent: 18 July 2009 08:58
>> To: JHB Restricted
>> Subject: [jhb] CH Yoke Query
>>
>> Another day and another problem! This time it's my CH USB Yoke.
>>
>> For about a week now I've found that leaving the yoke hands free results
>> in the aircraft slowly banking and turning to the right. It happens with
>> a variety of aircraft, so it's not aircraft.cfg induced.
>>
>> I've allocated a couple of keys to aileron trim but they have no effect.
>>
>> I've recalibrated several times. No effect.
>>
>> I've recalibrated, pressing a button to indicate the yoke is centred,
>> whilst actually holding it in the approx position needed for level
>> flight, in the current situation.
>>
>> I'm beginning to suspect the inabillity to trim, or calibrate, out
>> points to the Yoke internals as the culprit.
>>
>> I seem to recall someone on the list trying to open up the yoke, with
>> explosive results! So, the only idea I have is to try squirting
>> electrical cleaner into it.
>>
>> Anyone any ideas please? I've had the yoke since the USB Yoke first came
>> out, so perhaps it's just knackered!
>>
>> Gerry Winskill
>>
>>
>>
>
>
>
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