Hi all
I'm on my lunch break ATM punching away at my iPhone and thought that I would start my tricopter thread.
Dave has been a major inspiration to me as I have followed his builds closely and I have also learnt a lot from Matt Hall from simplecopter.
Unfortunately I didn't pay close attention to the electronics that blokes are using and I went ahead and randomly picked components based on total lifting capability not efficiency.
Also I was inspired by HK's beer lift competition...
So off I went,
NTM 35-48 900kV 815W motors
Tunigy Plush 60 ESC's
KK2 controller
Turnigy nano-tech 4500 4S lipo
HK 922MG digital servo
Front arms = 450mm
Rear arm = 470mm
For the props I wanted to start small for the motor's and get it dialed in before I go wild and upsize so I started off running 13x6.5 GWS.
The yaw mech I used is Dave's design made out of the steerable nose wheel assembly which worked unreal I love it.
I also went a little over board with my fpv setup as I pulled my eagletree out of my radian pro and installed it on the tri, I also run a Chinese 500mW 5.8Ghz TX and small 480p cam.
Total weight without the lipo was 1.6kg so it is a real fatty, for my sets flight I used the stock pids on V1.6 KK2 firmware and I did notice that the servo would not return to centre after yaw. I tested the servo and it test ok so the problem is in the kk2 board.
Nothing I did would get the servo to re centre correctly after yaw input :-(
Also the vibration from the motors was effecting the servo causing jitter which I could not eliminate.
On my test flight I flew for a total of 10:50 and watching the playback from my keychain cam it shows a lot of vibration at certain rpm( I did balance props but not the motors)
Lesson learnt
Cut out some weight and keep electronics simple....
I was not entirely happy with the flight time running such a large battery, I also measured current draw with a turnigy 130a watt meter and WOT drew 110A,hover on about 55A with 50% stick.
I will post my pics when I get to a PC this week end
Thanks for reading
Paul
I'm on my lunch break ATM punching away at my iPhone and thought that I would start my tricopter thread.
Dave has been a major inspiration to me as I have followed his builds closely and I have also learnt a lot from Matt Hall from simplecopter.
Unfortunately I didn't pay close attention to the electronics that blokes are using and I went ahead and randomly picked components based on total lifting capability not efficiency.
Also I was inspired by HK's beer lift competition...
So off I went,
NTM 35-48 900kV 815W motors
Tunigy Plush 60 ESC's
KK2 controller
Turnigy nano-tech 4500 4S lipo
HK 922MG digital servo
Front arms = 450mm
Rear arm = 470mm
For the props I wanted to start small for the motor's and get it dialed in before I go wild and upsize so I started off running 13x6.5 GWS.
The yaw mech I used is Dave's design made out of the steerable nose wheel assembly which worked unreal I love it.
I also went a little over board with my fpv setup as I pulled my eagletree out of my radian pro and installed it on the tri, I also run a Chinese 500mW 5.8Ghz TX and small 480p cam.
Total weight without the lipo was 1.6kg so it is a real fatty, for my sets flight I used the stock pids on V1.6 KK2 firmware and I did notice that the servo would not return to centre after yaw. I tested the servo and it test ok so the problem is in the kk2 board.
Nothing I did would get the servo to re centre correctly after yaw input :-(
Also the vibration from the motors was effecting the servo causing jitter which I could not eliminate.
On my test flight I flew for a total of 10:50 and watching the playback from my keychain cam it shows a lot of vibration at certain rpm( I did balance props but not the motors)
Lesson learnt
Cut out some weight and keep electronics simple....
I was not entirely happy with the flight time running such a large battery, I also measured current draw with a turnigy 130a watt meter and WOT drew 110A,hover on about 55A with 50% stick.
I will post my pics when I get to a PC this week end
Thanks for reading
Paul
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