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Gain settings for Carbon Fiber 8X4.5 Props?

Discussion in 'Phantom 1 Help' started by chad556, Jun 22, 2013.

  1. chad556

    May 16, 2013
    Likes Received:
    Phoenix, AZ
    I have put the new CF props on and not too happy with how sensitive the quad now is. It is very unstable while descending and gaining altitude. Much more so than the stock plastic props. These seem to be a popular prop, did any of you have to adjust your gain settings with these? If so, what are your numbers? Thanks!
  2. tanasit

    Jan 28, 2013
    Likes Received:
    You have a few choices to do so.
    1. Set it manually, how?
    First you must understand that the GAIN works this way:

    The Basic GAIN (first row in the GAIN tab of BASIC section in the Assistant) controls Flight attitude which means the higher the gain, the faster your Phantom will go back to level positions.
    the Attitude GAIN (second row) control stick response which means the higher the GAIN, the faster and more powerful your stick command will be.

    With that in mind, you can manually set the GAIN to your liking. DJI recommend changing 10% at a time.
    This means, you have to hook it up to your computer, set it, unhook and test fly and repeat the steps until you come to where you like. But if the weather changes or you add more accessories thus change weight, then you may have to change the GAIN setting again.

    2. Set it remotely without the computer hookup. First in the Assistant, in the GAIN tab of BASIC section click on the INH and select X1 of "whatever" GAIN you want (most likely the whole row). Turn your TX over on the bottom right, you will see a hole and if you look down, you will see a pot which can be adjusted using a small screw driver. Turning the pot will change the GAIN so while your Phantom still connected to the computer, try that and see how the GAIN % changes. First you want to set it so that around the "mid point" of the pot, you have the number as close as the default as possible and leave the pot setting there. You may want to put the mark on the back so that you know where is the mid point.
    At the field, you can try different settings and see how your Phantom reacts. Find your best pot setting and don't touch it.
    Back at home, connect to your computer and look at the GAIN, write the numbers down, then INH those X1 and set the numbers to whatever you wrote down.
    Now do the same for the second row (Attitude GAIN) as above.
    Later on you can "fine tune" each setting using the same method but set X1 for only what you want to change.

    Good luck,

    Note. we are using the hidden 7th channel of the Phantom TX, designed for the gimbal movement which requires the control arm connected to the pot on the back and you use your pinky to control the angle of the gimbal.

    http://www.shapeways.com/model/1082710/ ... Box-search

    For the carbon fiber 8x4.5 prop if your Phantom doesn't carry any video equipment, then it will be sensitive because it is very stiff so you may want to lower the Basic to around 60 - 80 %. But for heavier Phantom, default setting seems to work fine for me.
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