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Old 05-03-2011, 11:14 AM   #11
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Elec Re: help with dx6i/450 heli

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thanks joe on your advice i have changed the linkage back @ idle up im back to 0 pitch set up ) and back in normal im 0 at low stick and 3.5 at mid i will look at my curve settings to increase the pitch at half in normal mode to try to get it to a higher pitch right now my swash mix is set at 100 percent can i use swash to also get more pitch at half again in normal mode thanks
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Old 05-03-2011, 11:34 AM   #12
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Re: help with dx6i/450 heli

Okay, generally here's the procedure:

Set all your pitch curves to 0-50-100 in the radio. Swash mix should be set at 60% (I believe that's the default) endpoints all at 100% and subtrims all at 0.

- Start by getting all your servo arms to 90 degrees using subtrim.
- Now adjust links so that the swash is level and you have 0 degrees of pitch at mid stick.
- Now set up your maximum pitch at full high and low stick. Whip out the pitch gauge and get it to 10 degrees or so. You can use the pitch option in the swash mix menu to adjust how much overall positive and negative pitch you have. So if it's currently 60% and you have 12 degrees of pitch, drop it down to say 55% and re-check and keep going until it's 10 degrees (or so).
Just to be clear, the swash mix adjusts the endpoints of all 3 servos in concert. So increasing it means that all 3 servos will go further when you bring up the collective stick and will ALSO go DOWN further when you drop the collective stick to the bottom. Changing the swash mix for pitch or any of the other options does not change the center AT ALL.
- You should have an even number of positive and negative pitch at this point. So 10 degrees positive means you should have 10 degrees negative. If not, adjust links until they're even.
- Now that it's mechanically set up correctly, you will adjust your curves. So in normal mode, maybe you don't want -10 degrees low, 0 mid, and 10 high. Maybe you want -3 low, 0 mid, and 10 high. In that case, try a curve like this: 35-50-100. If you want say -2 degrees low, 5.5 mid, and 10 high for a mid stick hover, then use something like this: 40-70-100. Note that these are only starting points. I'm guessing - so to actually get the pitch you want at whatever stick position you want - you need to experiment with the curve and a pitch gauge.
uʍop ǝpısdn ʇı op sʎnƃ ılǝɥ
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Old 05-03-2011, 12:19 PM   #13
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Re: help with dx6i/450 heli

Agreed. Set the helicopter up mechanically to 0 pitch at mid-stick and then alter the pitch curves in order to accomplish different flight settings. Keep in mind that the mechanical head mixing levers are made to work properly at certain angles as well. If you stray to much from the designers angles which promote stability in the hover you are then fighting with the chopper. The pitch settings above are a great start and then alter to your liking. I have even set up pitch curves that have no negative at all so that the helicopter has a very soft landing and lift off.
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