is there a way to disconnect tiller when on take off roll

[namron2]

Hi

 

Recently, I assigned tiller control to a logitech steering wheel which I was not using. (this also has force feedback)

 

It works great while I am taxiing but, when I start my take off roll the wheel gets violent movements? I assume as the nose wheel is gaining speed and the ground is a little bit uneven, it send messages back to the tiller?

 

As I use the rudder on take off roll for direction control and not the tiller, is there any way I can program FSUIPC to ignore the tiller axis when a certain speed is reached?

 

Thank you

 

Norm

[Pete Dowson]

It works great while I am taxiing but, when I start my take off roll the wheel gets violent movements? I assume as the nose wheel is gaining speed and the ground is a little bit uneven, it send messages back to the tiller?

 

As I use the rudder on take off roll for direction control and not the tiller, is there any way I can program FSUIPC to ignore the tiller axis when a certain speed is reached?

 

If you assign and calibrate both tiller and rudder in FSUIPC then FSUIPC automatically takes care of the gradual transfer of effect from one to the other, tiller winding down from 100% at 0 knots GS to 0 at 60 (by default), whilst the rudder effect is increased from 0 to 100% at 60 knots. At 30 knots they would be 50:50.

 

This is all documented for you in the FSUIPC documents, and there you would also find that the 60 knot value is user settable by parameter in the INI file.

 

FSUIPC's tiller actually uses the rudder -- they BOTH control only the rudder, not the nose wheel -- there was no nose wheel steering option in FS9 and before, and this facility dates way before FS9. The only thing making the two rudder controls different is how you calibrate -- obviously you would calibrate the steering tiller to have more effect with smaller movements.

 

Since they are both only using rudder, there's no way this can contribute to a wheel getting "violent movements", so I think you can only ascribe that either to you assigning to the FSX steering control, which FSUIPC does not calibrate or interfere with at all, or there is something wrong with the aircraft model you are using.

 

Pete

[namron2]

Thank you, that was very informative.

 

After reading it, I now see a possible cause emanating from my X52 rudder axis?

 

When I am at the axes page, I see the rudder values jump erratically even though I am not activating the axis itself?

As soon as I give the axis a twist, it stops the erratic movement.

 

Also this displays itself when I am in spot plane mode and stationary on the runway........I see small erratic rudder deflections obviously in tune with the erratic values I see in FSUIPC?

 

Obviously, I have some internal problems with the X52 rudder axis itself which, up till now I haven't been able to cure?

 

So, after reading and understanding your reply, I am now wondering if my wheel is getting it's erroneous movement from the rudder anomalies??

 

Thank you

[Pete Dowson]

When I am at the axes page, I see the rudder values jump erratically even though I am not activating the axis itself?

As soon as I give the axis a twist, it stops the erratic movement.

 

Also this displays itself when I am in spot plane mode and stationary on the runway........I see small erratic rudder deflections obviously in tune with the erratic values I see in FSUIPC?

 

Obviously, I have some internal problems with the X52 rudder axis itself which, up till now I haven't been able to cure?

 

So, after reading and understanding your reply, I am now wondering if my wheel is getting it's erroneous movement from the rudder anomalies??

 

There are several possibilities:

 

1. Yes, possibly a faulty rudder axis (maybe just a dirty pot which could be fixed with electrical switch cleaner).

2. A conflicting assignment for the rudder axis, though since you say a "twist" removes the jitter, this seems unlikely.

3, A dodgy USB connection, or USB hub. However, I would have thought you had more than just the rudder on that connection?

 

If the jitter is just around the centre position, just calibrating with a larger dead zone there would help -- many pedals don't always return to dead centre after use in any case, and this would help with that.  If using FS assignments the dead zone facility there does the job ...but, better, when assigning in FSUIPC, instead just set the two "centre" calibration values further apart.

 

Pete

[namron2]

Thank you so much.

 

Quote:  many pedals don't always return to dead centre

 

I actually removed my rudder pedals per se in order to mount my steering wheel/tiller.  (kind of short of space as everything is mounted on a motion platform).

 

Consequently, I assigned a twist axis from my X52 as rudder control.

 

 

 

Nevertheless, I will try the larger dead zone and report back.

 

Norm

[namron2]

Ok increasing the deadline helped and I also changed the steering tiller cutoff speed to 20.

 

 

Thanks again for your assistance

 

Norm

[Pete Dowson]

Ok increasing the deadline helped and I also changed the steering tiller cutoff speed to 20.

 

I tend to taxi around 20-25, so with such a low cutoff I couldn't use the tiller. Are you only taxiing at about 5 knots?

 

A cut off at 20 means it's already down to only 50% effective at 10 knots.

 

Pete

[namron2]

You have a point there. Maybe I will increase it to 40...

 

I do taxi kind of slow especially with the 737 otherwise I tend to scare the heck out of all the other traffic (not to mention buildings) around me!

 

Thanks again