murankar
Staff member
Here is the current issue as of this writting.
On punch out my tail kicks to the right or nose left. How I found this problem or should I say what motivated me to fix the issue was because I decided retune the heli. What I had done was zeroed out the auto trim in the NEO via the VCnotrol. I set the tail, aileron and elevator back to zero. This feature is basically the sub trim to the VBAR. Mikado has designed the VBAR to adjust auto adjust so the pilot can speed up the tuning. Well unfortunately this system is not perfect by any means but it does get really (and I mean really) close. After my re-auto trim flight I landed and shut off the auto trim right as I throttle holded. This system will keep changing the numbers even after you landed (the not so perfect part).
Once the heli was landed and ready I hovered it again. While I still had drift it was not nearly as bad as it was. So I opened up the screen on the VControl that handles the sub trim and left it open and hvered the 570. As I found the drift I dialed in the sub trim poionts at a time till the 570 was damned near flying with out thumbs.
My next feat was to see if the heli would tilt front or back on punch out and bam, tail kick. As of right now there is not tilting but I still need to test a thing or two. I also set my head and tail gains to the knobs and adjusted those and still no improvements.
Hardware:
Scorpion Motor, Hobbywing 100a HV esc, Vbar Neo on Neo Governor
Now to solve the issue:
I had this problem righ after building the kit. When I first built the kit I setup the governor on the esc and had active freewheeling turned on. All I did was increase the tail acceleration and that solved the kick.
Now I am using the Neo governor and the issue is back. I have went and adjusted the tail acceleration and played with all the gains to no avail.
hypothesis:
What I think to be the issue is with the active freewheeling. I wont know for sure till I can get out and fly again. From what I have learned is hat active freewheeling does not play well with heli linear thrttle and external governors. I have also learned that active freewheeling is only needed when throttle output is going to be operating in a wide range. This range is about 30% or more through out the flight. Since I am running on a governor and throttle PWM will be fairly consistant I dont really need this feaure.
I have heard that active freewheeeling is for running lower throttle outputs (below 50% PWM). While this could still be true I am finding that it is primarly used to help the MOSFETs run cooler by smoothing out the duty cycles of the FETs due to wide throttle ranges.
Bear in mind I am not an electronics engineer and the info I have is from other sources and is my interpritations of said informaiton.
On punch out my tail kicks to the right or nose left. How I found this problem or should I say what motivated me to fix the issue was because I decided retune the heli. What I had done was zeroed out the auto trim in the NEO via the VCnotrol. I set the tail, aileron and elevator back to zero. This feature is basically the sub trim to the VBAR. Mikado has designed the VBAR to adjust auto adjust so the pilot can speed up the tuning. Well unfortunately this system is not perfect by any means but it does get really (and I mean really) close. After my re-auto trim flight I landed and shut off the auto trim right as I throttle holded. This system will keep changing the numbers even after you landed (the not so perfect part).
Once the heli was landed and ready I hovered it again. While I still had drift it was not nearly as bad as it was. So I opened up the screen on the VControl that handles the sub trim and left it open and hvered the 570. As I found the drift I dialed in the sub trim poionts at a time till the 570 was damned near flying with out thumbs.
My next feat was to see if the heli would tilt front or back on punch out and bam, tail kick. As of right now there is not tilting but I still need to test a thing or two. I also set my head and tail gains to the knobs and adjusted those and still no improvements.
Hardware:
Scorpion Motor, Hobbywing 100a HV esc, Vbar Neo on Neo Governor
Now to solve the issue:
I had this problem righ after building the kit. When I first built the kit I setup the governor on the esc and had active freewheeling turned on. All I did was increase the tail acceleration and that solved the kick.
Now I am using the Neo governor and the issue is back. I have went and adjusted the tail acceleration and played with all the gains to no avail.
hypothesis:
What I think to be the issue is with the active freewheeling. I wont know for sure till I can get out and fly again. From what I have learned is hat active freewheeling does not play well with heli linear thrttle and external governors. I have also learned that active freewheeling is only needed when throttle output is going to be operating in a wide range. This range is about 30% or more through out the flight. Since I am running on a governor and throttle PWM will be fairly consistant I dont really need this feaure.
I have heard that active freewheeeling is for running lower throttle outputs (below 50% PWM). While this could still be true I am finding that it is primarly used to help the MOSFETs run cooler by smoothing out the duty cycles of the FETs due to wide throttle ranges.
Bear in mind I am not an electronics engineer and the info I have is from other sources and is my interpritations of said informaiton.
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