geprc 12a 4s 1105 6000kv

By matthew saigon on May 30, 2019

5  360  0

i'll clean up the page later :)
-- i crashed this one a couple of weeks ago and had to wait for new frame.
-- while waiting for the frame, i found kingkong 76mm props for 1103. the most interesting props ever.
-- so i'm busy working on those props and have to put this on hold. i haven't tested this 4s 1105 since. this will have to wait. i'm sorry :(

6/1/2019: i flew LOS with avan 3" props. it turns out this build and pid like them. i think i'll fly with them for a while :)

yes, it's my other 1105 wild flower build. i just put 4s on it. i'll move it there after a few weeks.
i just make a new page to show it to testers.

i flew LOS for 10 packs for testing. it flew fine. punchouts at 100% throttle.
motors felt a bit warm, not hot with weather at 80 degrees.
i guess Betaflight 4 helps keeping motors cooler.

the build is just a normal build. but if you have question about the build, just leave a message.

my pid is ok, a good starting point. most of it from "betaflight community presets", so creadits to them :)
68g dry
4s 450mah ( i just bought Gnb 4s 520mah, i think it's a better choice. but i don't know yet. i'm waiting for them arrive )
3025 props
hglrc flame 1105 6000kv

betaflight 4.x.x
set gyro_lowpass_type = BiQUAD
set dyn_notch_min_hz = 150
set dyn_lpf_gyro_min_hz = 150
set dyn_lpf_gyro_max_hz = 700
set dyn_lpf_dterm_min_hz = 150
set dyn_lpf_dterm_max_hz = 250
set dterm_lowpass_type = BiQUAD
set dterm_lowpass2_hz = 150

set anti_gravity_gain = 5000
set p_pitch = 50
set i_pitch = 95
set d_pitch = 27
set p_roll = 47
set i_roll = 88
set d_roll = 25
set d_min_pitch = 18
set d_min_roll = 16
set d_min_boost_gain = 30
set d_min_advance = 0

set iterm_relax_type = GYRO
set iterm_relax_cutoff = 11

set tpa_rate = 40
set tpa_breakpoint = 1600

-- it's hard to tell from the video. but it's more responsive and faster acceleration.
-- 4s 450mah is too small. it comes down a bit warm with mostly 60% punchouts. but 4s 550mah is 78g. it might be too heavy compare to 4s 450mah 55g. why isn't there 65g batteries ?

-- i just found 2 tattu 4s 650mah around my house. it weights 68g. but it doesn't feel like 650mah but more like 550mah.
-- anyway, it's still better than tattu 4s 450mah. now i think about it. what if tattu 4s 450mah feels like 400mah or even 350mah. who knows.



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