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  1. #1

    Join Date
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    Using a PowerExpander Pro with a JR 1221 Rx

    Bob, I want to go to the JR 12X 2.4 GHz but I am having trouble setting up a fairly simple aerobatic plane. The plane has two servos per wing but each one goes thru a 3D equalizer so in effect it is one servo per wing half, one elevator servo per elevator, one rudder servo, the throttle servo and an optical kill switch that I had on the gear channel. The servos are set up with a super regulator and PowerExpander Pro all with Deans connectors and is/was a good working setup with the JR 2000 systhesized receiver.

    The instructions that came with the JR 1221 Receiver show the following channel assignments:

    Programmable Smoke System- Channel 10/ Aux5
    Rudder Servo 2- Channel 9/ Aux4
    Left Aileron Servo 2- Channel 8/ Aux3
    Right Aileron Servo 2- Channel 7/ Aux2
    Left Elevator Servo- Channel 6/ Aux1
    Left Aileron Servo 1- Gear CH5
    Rudder Servo 1- Rudder CH4
    Right Elevator Servo- Elevator CH3
    Right Aileron Servo 1- Aileron CH2
    Throttle Servo- Throttle CH1

    Can you help me. I can't seem to get the dual channels to work on either the elevator or ailerons.

    Thank you,

    Bobby Folsom

  2. #2

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    RE: Using a PowerExpander Pro with a JR 1221 Rx

    Hi Bobby,
    I guess I am not sure what is not working for you. Have you hooked a servo directly to the receiver on the channels that are not working to verify the transmitter is programmed correctly? The transmitter may require setup to assign the channels you are using, you did not say if you did that or went with the default transmitter programming. Can you please give me more explanation on what you are having problem with? Is it that the channels on the receiver work when hooked up directly but now when hooked through the PowerExpander? Thanks,
    Robert Ritchey
    Owner, Smart-Fly
    www.Smart-Fly.com

  3. #3

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    RE: Using a PowerExpander Pro with a JR 1221 Rx

    Robert, after more work and some help from Len Alessi I now have a working PE/JR1221 setup. It turns out that the "problem" was all in the transmitter programming and had nothing to do with the PE! I ended up using the exact same slots for the 1221 as those I used for the JR 2000 receiver!

    Thank you for responding and your willingness to help.

    Bobby

  4. #4

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    RE: Using a PowerExpander Pro with a JR 1221 Rx

    Hi Bobby,
    I am glad you got it worked out. Thanks for letting me know.
    Robert Ritchey
    Owner, Smart-Fly
    www.Smart-Fly.com


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