thestructured wrote:
Your servo arms should be as close to 90 degrees as possible when the diagnostic screen says 0 degrees for pitch, or when you click the "subtrim (tuning)" box in the servo screen of the software, which moves the servos to center/0 degrees automatically.
Your servo to swashplate linkages should be the length that the manual for your helicopter says they should be. As for the length of the servo arms, use the hole that the manual to your helicopter tells you to use.
Then using a swashplate leveler, trim the servos in the spirit software until the swashplate is perfectly level.
Then attach the rotorhead, connect the DFC linkages to the swashplate. If the blades are not 0 degrees, turn the plastic ball links on the DFC linkages out until the blades are 0 degrees.
If you have to turn the ball links out too much (not enough threads in the plastic links) then you should make your servo to swashplate linkages longer instead.
Once you have attained 0 degrees of pitch on the blades, matching 0 degrees in the spirit sotware, check the pitch amount at full positive and full negative pitch to see if they match. Often they do not.
If they do not, hit "servo travel correction" under the servo tab in the spirit software, and move all three sliders down or up in equal amounts, for whichever (positive or negative) to make full positive and negative collective equal.
Proceed to the 'limits' tab and set the amount of pitch you want to have, and then set the cyclic ring. Set this as high as you can without mechanical binding. Make sure you check cyclic ring with full positive collective, and full negative collective, to make sure nothing mechanical is binding in those positions, not only at 0 degrees.
Then, for setting of the 6 degrees geometry in the advanced tab, make sure your transmitter stick is at 0 degrees pitch first.
Please post photos of the setup if you are having any more problems, it would be easier to help if I could see.
Much appreciated getting back to me. I didn't take pictures this time, but please read the steps I finished just now, maybe you can spot something....
OK, I finished my "Experiment" with NEGATIVE outcome, again...
1) Reset the Spirit Servo Sub-trim to zero for all 3 cyclic servos
2) Re-calibrated the Tx center points
3) Replaced the original Align wheels of the 3 cyclic with arms and positioned the ball links lower by 2 points for all 3 servos - to shorten the servo arms (this will no doubt place more stress on the servos)
4) Reset all 3 mechanically to 90° as close as I could
5) Went through the wizard from the start
6) In Step 7, used the sub-trim to level the swashplate using the tool
7) Checked the Pitch box and adjusted the blade over the tail boom to 0°
8) Turned around the other blade over the boom, adjusted the blade rod to be zero as well
9) Moved to step-8.... not SIX degrees and maximum shift to 64 points...
One other detail, "My manual" is of the Align Trex 600 ESP, it doesn't know aboud DFC controls, nor about a DFC swashplate with two holes...
So, I am now in despration stage - I MUST be doing here something wrong which is not obvious from my description of my steps above. Please read my steps, see if you can figure out (maybe the order in which I am doing things), or what else can I do?
Cheers and thanks again
