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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › problem with Futaba T6X reversed Hold and Idle-Up
07-18-2006 12:34 AM  14 years ago
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Pete123

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Brussels, Belgium

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problem with Futaba T6X reversed Hold and Idle-Up
Hello everybody.

The problem is: the Idle-Up and the Hold functions are reversed.
For ex. if I switch the Hold function ON (for autorotations) the throttle goes to 100%, normally it should go to 0%.
in the normal mode everything is OK.

I think that the problem is in a wrong connection of some wires inside my tx
(I asked my dealer to put the throttle stick on the right side). I tried to open it but everything seems to be ok.

any advice will help. thanks. Pete
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07-18-2006 01:04 AM  14 years ago
Raffy

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Chicago, Illinois

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Open your radio and remove the Throttle hold switch and reverse it's position ( turn it around ). Do the same with the Idle Up switch.
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07-18-2006 03:04 AM  14 years ago
dkshema

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Cedar Rapids, IA

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You asked your dealer to put the throttle stick on the right side. That would also mean that the elevator switched positions on the transmitter. You most likely had to reverse the elevator channel to keep the elevator function working in the correct direction.

If the swap was made by swapping the position of the two pots inside the transmitter from stick to stick, the act of simply moving the pots reversed those two functions. This is due to the way the pots are mounted in the gimbals. To keep all channels moving in the same relative position, the throttle pot has to be wired "backwards" from the elevator pot. If he moved the wires from one side to the other, he would have needed to reverse the position of the wires that go to the "end" of the pot to maintain the correct direction.

A typical potentiometer (pot) is at its lowest resistance value with the shaft turned all the way counter clockwise. The resistance value increases as the shaft is turned clockwise. Since the throttle pot and the elevator pot are mounted in the gimbals with their backs facing each other (shafts pointed away from each other), one of them needs to be wired in reverse from the other. This is not true of the pots associated with the rudder and aileron function. Those pots are oriented in the same direction, the shafts in each rotate the same direction for left rudder and left aileron.

Even swapping the two sticks will cause the same reversal in the elevator and throttle function.

But -- the throttle hold switch, and the idle up switch remained wired as they were. Moving the throttle function from one stick to the other caused a reversal in those two functions, but the idle-up and hold switch were not also reversed to reflect the throttle reversal.

So you need to reverse the idle up and hold switches to reverse their function so it again matches the throttle stick position. This can be done by moving the wires, or by simply turning the switches 180 degrees as suggested.

Dave
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07-18-2006 09:14 AM  14 years ago
nickt919

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New Orleans, Louisiana

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I know the futaba 7C has a hidden menu with throttle reverse, as well as other reversal features. In the reversed position this condition you explain will happen. The 6X is probably the same.
To access this menu hold the menu button down then turn on the TX power. It should bring you there. After you reverse the throttle channel cycle the power.
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07-18-2006 12:59 PM  14 years ago
Pete123

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Brussels, Belgium

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thanks guys

the throttle was reversed like nickt919 said (thaks man!)

Pete
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