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Old 05-06-2019, 12:10 AM   #1 (permalink)
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Default 3D mode calibration

Is there a way to calibrate the 3D mode on a Nano CP S? My CPS flys fine in the Stability Mode. Whenever I turn on the 3D mode, I notice that my swashplate left will raise up. I am using the transmitter came with the RTF set.


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Old 05-06-2019, 01:51 AM   #2 (permalink)
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If I had to guess, you previously set trim on your transmitter. You shouldn't have those in 3D mode.

When in 3D mode, any cyclic trim that the transmitter sends in interpreted as a command to the FBL to initiate a roll of some sort. You can't have TX trim in 3D mode, and there isn't a trim flight for 3D mode.

Click those trim buttons until you hear the tell-tale no-trim beep. After that, you will definitely need to do a new trim flight for your stability modes (if you want to still use them) since your current trim flights have been compensating for your TX's trim.
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Old 05-06-2019, 10:17 AM   #3 (permalink)
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Yep, as Xoexoe said, get rid of all trims in your Tx. You can do the Calibration flight in Stability mode, but that won't affect 3D mode. As with other helicopters, you'll have to set your blade pitch to 0-degrees at mid-stick, level your swash plate and set your pitch end-points to get 3D mode working correctly.
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Old 05-06-2019, 10:34 PM   #4 (permalink)
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You are exactly right! I guess I will need to do a better job leveling my swashplate.


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Old 05-07-2019, 09:11 AM   #5 (permalink)
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Tried to balance the Swashplate last night and end up my nano is hovering inches above the ground...
I had this issue once before and found out that the main motor was too low and was not fully connected to the main gear. So I checked and adjusted the motor. No luck...
Has this happened to anyone before?
Also, does anyone have any recommendation for the connector between blade grip and swashplate as well as the connecting pole for swashplate and the servo? The one came with the heli is so soft and easy to bend...
Thanks in advanced!


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Old 05-07-2019, 10:25 AM   #6 (permalink)
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Regarding the plastic swash, you'll just have to be super careful with pushing the servo links back onto the balls. I have found that needle-nose pliers can help. Ultimately, however, a metal swash will be best.

With your Tx turned off, plug in a battery and wait for the servos to jump to their middle position. Unplug the battery and look at the blades. Are they at zero-degrees of pitch? If not, then you have some adjusting to do.

First, though, the main motor probably didn't move. Rather, the main gear tends to slip down on the main shaft--this results in a loss of positive blade pitch during flying. This can be fixed by merely pushing the main gear back up toward the frame to remove the slop.

Now, with the main gear properly positioned and the servos at their middle positions, there are a couple of things that can affect the blade pitch. First is the lengths of the the servo links, and second is the position of the rotor head atop the main shaft. You may have to adjust both, but don't max-out either one.

For starters, however, I would undo what you did to the main motor and then push up on the main gear to remove any slop. Let's first see where doing these things leaves you.

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