Well, the last version of the old Ducty was quite OK, crash resistance was great, but it was lacking power…

I ordered some 1304 motors as a replacement, but while waiting for them i figured out that the ESCs used in the old Ducty might be a part of the problem. The DYS Bl ESCs were just to slow to handle the 4000kv on 3S. Instead of replacing the ESCs as well, i decided to do a completely new build. This time with a 20x204in1 ESC and matching FC.

BTW. The Frame has ~ 140cm² of material, using the cheaper GFK instead of CFK adds ~10g of weight - acceptable for me.

• OMNIBUS Betaflight 3.1 F3 Mod for 4S
• FrSky XSR A2 Voltage Mod with 10k/51k divider

Specification Item name: H1304 KV: 4000KV Weight (g): Approx 7.5g Configuration: 9N12P Shaft Diameter: 2mm Out the Shaft is 1.5mm Stator Diameter: 13mm Stator Length: 4mm Motor Dimensions: ΦXX×XXmm No.of Cells(Lipo): 2-4S Internal Resistance: –Ω @ 10V No-Load Current: –A @ 10V Cable Length: ~10cm (Soft AWG) Screw: M2*3 (Base) M2*6 (Top)

Der kleine Blade Inductrix mit FPV macht indoor extrem Spass, ist aber mit Cam und Sender leicht überfordert. Der neue Induxtrix 200 ist zu groß, zu teuer und vor allem nicht selbstgebaut. → Also selbst was zeichnen….

Nach 3 Iterationen mit 2 Zoll CFK Schaum, 3 Zoll CFK Schaum, 3 Zoll Styrodur bin ich nun bei einem 2.5 Zoll Frame aus 2x 1mm GFK mit 2x20mm Standoffs gelandet. Das scheint recht stabil und gut zu funktionieren.

So, der Ducty hat auch seine neuen 2535 4-Blatt Props bekommen. Bei ner ganzen Tüte mit Teilen - jeder Prop besteht aus 2 verschiedenen Spritzgußteilen - war erstmal puzzeln angesagt Fliegt aber klasse damit, laut Anderen wohl gleich viel Schub die wie 3020, also deutlich mehr als meine gekürzten 2530. Sound ist auch viel Besser, leiser und nicht mehr so beißend. Allerdings werden die kleinen 1104er Motoren recht warm, denke da wegen der Überkopf Montage die direkte Kühlung fehlt. 1105 oder 1106 Motoren währen wohl besser geeignet….

ACHTUNG: Cleanflight hat/hatte einen Bug bei Nutzung von PPM auf dem CC3D. In Betaflight ist der schon länger gefixt, dafür ist PPM-IN von Pin3 auf Pin8 des Steckers gewandert.

Erster Test der letzten Version aus GFK.

CleanFlight 1.13.0 RC1

CF Configurator 1.2.2

# set
Current settings:
looptime = 2000
emf_avoidance = OFF
i2c_highspeed = ON
gyro_sync = ON
gyro_sync_denom = 1
mid_rc = 1500
min_check = 1100
max_check = 1900
rssi_channel = 0
rssi_scale = 30
rssi_ppm_invert = OFF
rc_smoothing = OFF
rx_min_usec = 885
rx_max_usec = 2115
serialrx_provider = SPEK1024
sbus_inversion = ON
spektrum_sat_bind = 0
input_filtering_mode = OFF
min_throttle = 1070
max_throttle = 1850
min_command = 1000
servo_center_pulse = 1500
motor_pwm_rate = 400
servo_pwm_rate = 50
3d_deadband_low = 1406
3d_deadband_high = 1514
3d_neutral = 1460
retarded_arm = OFF
disarm_kill_switch = ON
auto_disarm_delay = 5
max_arm_angle = 25
small_angle = 25
fixedwing_althold_dir = 1
reboot_character = 82
gps_provider = NMEA
gps_sbas_mode = AUTO
gps_auto_config = ON
gps_auto_baud = OFF
gps_pos_p = 15
gps_pos_i = 0
gps_pos_d = 0
gps_posr_p = 34
gps_posr_i = 14
gps_posr_d = 53
gps_nav_p = 25
gps_nav_i = 33
gps_nav_d = 83
gps_wp_radius = 200
nav_controls_heading = ON
nav_speed_min = 100
nav_speed_max = 300
nav_slew_rate = 30
telemetry_switch = OFF
telemetry_inversion = OFF
frsky_default_lattitude =  0.000
frsky_default_longitude =  0.000
frsky_coordinates_format = 0
frsky_unit = IMPERIAL
frsky_vfas_precision = 0
hott_alarm_sound_interval = 5
battery_capacity = 0
vbat_scale = 110
vbat_max_cell_voltage = 43
vbat_min_cell_voltage = 33
vbat_warning_cell_voltage = 35
current_meter_scale = 400
current_meter_offset = 0
multiwii_current_meter_output = OFF
current_meter_type = ADC
align_gyro = DEFAULT
align_acc = DEFAULT
align_mag = DEFAULT
align_board_roll = 0
align_board_pitch = 0
align_board_yaw = 0
max_angle_inclination = 500
gyro_lpf = 188HZ
gyro_soft_lpf = 60
moron_threshold = 32
imu_dcm_kp = 2500
imu_dcm_ki = 0
alt_hold_deadband = 40
alt_hold_fast_change = ON
deadband = 0
yaw_deadband = 0
yaw_control_direction = 1
3d_deadband_throttle = 50
throttle_correction_value = 0
throttle_correction_angle = 800
pid_at_min_throttle = ON
yaw_motor_direction = 1
yaw_jump_prevention_limit = 200
tri_unarmed_servo = ON
servo_lowpass_freq =  400.000
servo_lowpass_enable = OFF
default_rate_profile = 0
rc_rate = 90
rc_expo = 65
rc_yaw_expo = 0
thr_mid = 50
thr_expo = 0
roll_rate = 40
pitch_rate = 40
yaw_rate = 40
tpa_rate = 0
tpa_breakpoint = 1500
failsafe_delay = 10
failsafe_off_delay = 200
failsafe_throttle = 1000
failsafe_kill_switch = OFF
failsafe_throttle_low_delay = 100
failsafe_procedure = 1
gimbal_mode = NORMAL
acc_hardware = 0
acc_cut_hz = 15
accxy_deadband = 40
accz_deadband = 40
accz_lpf_cutoff =  5.000
acc_unarmedcal = ON
acc_trim_pitch = 0
acc_trim_roll = 0
baro_tab_size = 21
baro_noise_lpf =  0.600
baro_cf_vel =  0.985
baro_cf_alt =  0.965
baro_hardware = 0
mag_hardware = 0
mag_declination = 0
pid_controller = MWREWRITE
p_pitch = 40
i_pitch = 30
d_pitch = 18
p_roll = 40
i_roll = 30
d_roll = 18
p_yaw = 85
i_yaw = 45
d_yaw = 0
p_alt = 50
i_alt = 0
d_alt = 0
p_level = 20
i_level = 10
d_level = 100
p_vel = 120
i_vel = 45
d_vel = 1
yaw_p_limit = 500
dterm_cut_hz = 0
blackbox_rate_num = 1
blackbox_rate_denom = 1
blackbox_device = SPIFLASH
magzero_x = 0
magzero_y = 0
magzero_z = 0