I have a gauge that shows existing rudder trim, so I can return it to zero, after fiddling. I've just done the same with aileron trim but that seems to indicate that even 100%, in either direction, has absolutely no effect.
Now I think I've definitely narrowed it down to the yoke itself. I've disabled the CH YOKE X Axis, via the Options, Settings, Controls menu, and assigned ailerons to the keyboard arrows. I can now get it to fly level but with no way of knowing aileron position to achieve this. So, I've set it up om a heading with autopilot, then disengaged HDG Hold. It flies level. If I do this with the Yoke enabled it would bank when HDG Hold is disengaged.
Finally, I've shut down FSX, moved the yoke cable to a front of case connection, enabled its X axis and disabled the keyboard controls. Back to dodgy aileron control, so that seems to point to the unit, rather than Paul's logical alternative.
Something I'd forgotten to mention is that, coincidentally, the pitch control seems a lot more sensitive, with all aircraft. Again it must be hardware related.
Next shot is a blast with electrical cleaner. Thanks for the input folks, much appreciated. Gerry Winskill Fossil wrote:
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 QueryIt 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 atall.If you feel the aircraft rolling does any touch on the yoke affect therollrate? 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. Ifsolook at other input devices like the mouse or touchpad which can alsoaffecthandling. 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 QueryNot 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] OnBehalfOf 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
