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Old 09-30-2019, 08:48 PM
parkjnl is offline
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JR xg14 programming question

I have limited space inside the fuse when the nose wheel is retracted and I am trying to disable the steering function when gear up.
I think it can be done under the flight modes and cannot figure it out
I have nose steering mixed with rudder through the aux 3 knob on tx. I use aux 3 so I can adjust steering independently from rudder trim. Aux 3 knob outputs to aux 2 on rx
Gear up/down is on tx switch aux 6
How can I set this up when aux 6 is in down position? I need steering when down and disabled when up

Thanks
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Old 09-30-2019, 11:44 PM
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Are you using rudder command to do any of the nose gear steering or are you just using the AUX3 knob for steering? Is there a nose gear steering servo independent of the rudder servo?

Broadly, the solution is to use a program mix to connect the AUX3 knob to the nose gear steering servo. With a program mix by selecting the proper select switches, you can turn off the steering and cause steering servo to neutralize whenever the gear is retracted.

If the rudder along with the AUX3 knob is being used for the nose gear steering, a second program mix will have to be set up to disable the rudder input to the steering servo when the gear is retracted.

Allan
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Old 10-01-2019, 11:37 AM
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Allen
Thanks for the reply
Nose steer is a separate servo from rudder
I have rudder mixed with aux 3 so I can adjust the steering independent from the rudder for fine tuning
What I can't figure out is how to disable the steering when retracted
Thanks
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Old 10-01-2019, 01:11 PM
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Here is a simple approach by using the P0 and P1 settings in a point mix. You will need to experiment.

Use a point mix to mix Rudder to Aux2. (Don't include trim when setting up the mix.) Assign the switch used for landing gear to the switch used in the point mix that selects between the P0 throw settings and P1 settings.

If you assign the gear down position to P0 then set the P0 throw settings to attain the desired nose gear turning authority. Set the P1 throw settings to 0 to disable the mix (and nose gear movement)when the gear is up.

Use the offset function in the point mix to adjust centering when the gear is down.
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Old 10-01-2019, 05:30 PM
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lowpasstwo1951 solution is better than mine in that it requires only one program mix and the trim adjustment to the steering doesn’t require the use of the AUX3 LV which can be accidentally bumped out of adjustment.

One addition I would make concerns the AUX2 channel which commands the steering servo in this setup. Set AUX2 [OUT] to INH in the DeviceSelect. Otherwise the AUX2 SW (the default device for the channel) can change the steering trim drastically.

Allan
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Old 10-01-2019, 07:50 PM
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Thanks!
I'll try and report
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Old 10-02-2019, 07:44 PM
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Thanks guys
This proves you can teach an old dog....

Ideas did the trick!!
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